49 results on '"de Senerpont Domis, L.N."'
Search Results
2. Towards climate-robust aquatic ecosystem restoration : Lessons learned from controlled experiments and modeling
- Author
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de Senerpont Domis, L.N., Lürling, M., Zhan, Qing, de Senerpont Domis, L.N., Lürling, M., and Zhan, Qing
- Published
- 2023
3. Temperature response of aquatic greenhouse gas emissions strongly depends on dominant plant type
- Author
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Aben, R.C.H., Velthuis, M., Kazanjian, G., Frenken, T., Peeters, Edwin, van de Waal, D.B., Hilt, S., de Senerpont Domis, L.N., Lamers, L.P.M., Kosten, S., Aben, R.C.H., Velthuis, M., Kazanjian, G., Frenken, T., Peeters, Edwin, van de Waal, D.B., Hilt, S., de Senerpont Domis, L.N., Lamers, L.P.M., and Kosten, S.
- Abstract
Greenhouse gas (GHG) emissions from small inland waters are disproportionately large. Climate warming is expected to enhance their emissions and favour dominance of algae and free-floating plants at the expense of submerged plants. The different impacts these functional plant types have on their environment may have far-reaching consequences for freshwater GHG emissions. Here, we show that dominance of different functional plant types strongly controls the effect of experimental warming on GHG fluxes, mainly by modulating methane ebullition, an often-dominant GHG emission pathway. Specifically, we demonstrate that the response to experimental warming was strongest for free-floating and lowest for submerged plant-dominated systems. Importantly, our results suggest that anticipated shifts in plant type may increase total GHG emissions from shallow waters. This, together with the stronger warming-induced emission response, represents a so far overlooked positive climate feedback. Management strategies aimed at favouring submerged plant dominance may substantially mitigate GHG emissions.
- Published
- 2022
4. Virtual growing pains: Initial lessons learned from organizing virtual workshops, summits, conferences, and networking events during a global pandemic
- Author
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Meyer, M.F., Ladwig, R., Dugan, H.A., Anderson, A., Bah, A.R., Boehrer, Bertram, Borre, L., Chapina, R.J., Doyle, C., Favot, E.J., Flaim, G., Forsberg, P., Hanson, P.C., Ibelings, B.W., Isles, P., Lin, F.-P., Lofton, D., Moore, T.N., Peel, S., Peters, J.A., Pierson, D., De Senerpont Domis, L.N., Schloss, J.A., Shikhani, Muhammed, Smagula, A.P., Stockwell, J.D., Thomas, P., Thomas, R.Q., Tietjen, T., Weathers, K.C., Meyer, M.F., Ladwig, R., Dugan, H.A., Anderson, A., Bah, A.R., Boehrer, Bertram, Borre, L., Chapina, R.J., Doyle, C., Favot, E.J., Flaim, G., Forsberg, P., Hanson, P.C., Ibelings, B.W., Isles, P., Lin, F.-P., Lofton, D., Moore, T.N., Peel, S., Peters, J.A., Pierson, D., De Senerpont Domis, L.N., Schloss, J.A., Shikhani, Muhammed, Smagula, A.P., Stockwell, J.D., Thomas, P., Thomas, R.Q., Tietjen, T., and Weathers, K.C.
- Abstract
For many, 2020 was a year of abrupt professional and personal change. For the aquatic sciences community, many were adapting to virtual formats for conducting and sharing science, while simultaneously learning to live in a socially distanced world. Understandably, the aquatic sciences community postponed or canceled most in‐person scientific meetings. Still, many scientific communities either transitioned annual meetings to a virtual format or inaugurated new virtual meetings. Fortunately, increased use of video conferencing platforms, networking and communication applications, and a general comfort with conducting science virtually helped bring the in‐person meeting experience to scientists worldwide. Yet, the transition to conducting science virtually revealed new barriers to participation whereas others were lowered. The combined lessons learned from organizing a meeting constitute a necessary knowledge base that will prove useful, as virtual conferences are likely to continue in some form. To concentrate and synthesize these experiences, we showcase how six scientific societies and communities planned, organized, and conducted virtual meetings in 2020. With this consolidated information in hand, we look forward to a future, where scientific meetings embrace a virtual component, so to as help make science more inclusive and global.
- Published
- 2021
5. Stratification strength and light climate explain variation in chlorophyll a at the continental scale in a European multilake survey in a heatwave summer
- Author
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Ministerio de Ciencia, Innovación y Universidades (España), National Science Foundation (US), Hernández, Armand, Donis, Daphne, Mantzouki, E., McGinnis, D.F., Vachon, D., Gallego, I., Grossart, H.P., de Senerpont Domis, L.N., Teurlincx, S., Seelen, L., Lürling, M., Verstijnen, Y., Maliaka, V., Fonvielle, J., Visser, P.M., Verspagen, J., van Herk, M., Antoniou, M.G., Tsiarta, N., McCarthy, V., Perello, V.C., Machado-Vieira, D., Gurjão de Oliveira, Alinne, Maronić, D.Š., Stevi, F., Pfeiffer, T. Ž., Vuceli, I. B., Žutinić, P., Udovi, M. G., Plenković-Moraj, Anđelka, Bláha, L., Geriš, R., Fránková, M., Christoffersen, K.S., Ministerio de Ciencia, Innovación y Universidades (España), National Science Foundation (US), Hernández, Armand, Donis, Daphne, Mantzouki, E., McGinnis, D.F., Vachon, D., Gallego, I., Grossart, H.P., de Senerpont Domis, L.N., Teurlincx, S., Seelen, L., Lürling, M., Verstijnen, Y., Maliaka, V., Fonvielle, J., Visser, P.M., Verspagen, J., van Herk, M., Antoniou, M.G., Tsiarta, N., McCarthy, V., Perello, V.C., Machado-Vieira, D., Gurjão de Oliveira, Alinne, Maronić, D.Š., Stevi, F., Pfeiffer, T. Ž., Vuceli, I. B., Žutinić, P., Udovi, M. G., Plenković-Moraj, Anđelka, Bláha, L., Geriš, R., Fránková, M., and Christoffersen, K.S.
- Abstract
To determine the drivers of phytoplankton biomass, we collected standardized morphometric, physical, and biological data in 230 lakes across the Mediterranean, Continental, and Boreal climatic zones of the European continent. Multilinear regression models tested on this snapshot of mostly eutrophic lakes (median total phosphorus [TP] = 0.06 and total nitrogen [TN] = 0.7 mg L), and its subsets (2 depth types and 3 climatic zones), show that light climate and stratification strength were the most significant explanatory variables for chlorophyll a (Chl a) variance. TN was a significant predictor for phytoplankton biomass for shallow and continental lakes, while TP never appeared as an explanatory variable, suggesting that under high TP, light, which partially controls stratification strength, becomes limiting for phytoplankton development. Mediterranean lakes were the warmest yet most weakly stratified and had significantly less Chl a than Boreal lakes, where the temperature anomaly from the long-term average, during a summer heatwave was the highest (+4°C) and showed a significant, exponential relationship with stratification strength. This European survey represents a summer snapshot of phytoplankton biomass and its drivers, and lends support that light and stratification metrics, which are both affected by climate change, are better predictors for phytoplankton biomass in nutrient-rich lakes than nutrient concentrations and surface temperature.
- Published
- 2021
6. The impact of climate warming on water temperature, timing of hatching and young-of-the-year growth of fish in shallow lakes in the Netherlands
- Author
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Mooij, W.M., De Senerpont Domis, L.N., and Hülsmann, S.
- Published
- 2008
- Full Text
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7. Warming advances virus population dynamics in a temperate freshwater plankton community
- Author
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Frenken, T., Brussaard, C.P.D., Velthuis, M., Aben, R., Kazanjian, G., Hilt, S., Kosten, S., Peeters, E.T.H.M., de Senerpont Domis, L.N., Stephan, S., Van Donk, E., van de Waal, D., Frenken, T., Brussaard, C.P.D., Velthuis, M., Aben, R., Kazanjian, G., Hilt, S., Kosten, S., Peeters, E.T.H.M., de Senerpont Domis, L.N., Stephan, S., Van Donk, E., and van de Waal, D.
- Abstract
Viruses are important drivers in the cycling of carbon and nutrients in aquatic ecosystems. Since viruses are obligate parasites, their production completely depends on growth and metabolism of hosts and therefore can be affected by climate change. Here, we investigated if warming (+4°C) can change the outcome of viral infections in a natural freshwater virus community over a 5‐month period in a mesocosm experiment. We monitored dynamics of viruses and potential hosts. Results show that warming significantly advanced the early summer peak of the virus community by 24 d, but neither affected viral peak abundances nor time‐integrated number of viruses present. Our results demonstrate that warming advances the timing of viruses in a natural community. Although warming may not necessarily result in a stronger viral control of bacterial and phytoplankton communities, our results suggest it can alter host population dynamics through advanced timing of infections, and thus timing of carbon and nutrient recycling.
- Published
- 2020
8. Serving many masters at once: importance of ecosystem services in (novel) lakes
- Author
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Sub Ecology and Biodiversity, Ecology and Biodiversity, van Donk, Ellen, de Senerpont Domis, L.N., Lürling, M.F.L.L.W., Seelen, Laurentia Maria Sibilla, Sub Ecology and Biodiversity, Ecology and Biodiversity, van Donk, Ellen, de Senerpont Domis, L.N., Lürling, M.F.L.L.W., and Seelen, Laurentia Maria Sibilla
- Published
- 2020
9. Storm impacts on phytoplankton community dynamics in lakes
- Author
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Stockwell, J.D., Doubek, J.P., Adrian, R., Anneville, O., Carey, C.C., Carvalho, L., De Senerpont Domis, L.N., Dur, G., Frassl, M.A., Grossart, H.-P., Ibelings, B.W., Lajeunesse, M.J., Lewandowska, A.M., Llames, M.E., Matsuzaki, S.-I.S., Nodine, E.R., Nõges, P., Patil, V.P., Pomati, F., Rinke, Karsten, Rudstam, L.G., Rusak, J.A., Salmaso, N., Seltmann, C.T., Straile, D., Thackeray, S.J., Thiery, W., Urrutia‐Cordero, P., Venail, P., Verburg, P., Woolway, R.I., Zohary, T., Andersen, M.R., Bhattacharya, R., Hejzlar, J., Janatian, N., Kpodonu, A.T.N.K., Williamson, T.J., Wilson, H.L., Stockwell, J.D., Doubek, J.P., Adrian, R., Anneville, O., Carey, C.C., Carvalho, L., De Senerpont Domis, L.N., Dur, G., Frassl, M.A., Grossart, H.-P., Ibelings, B.W., Lajeunesse, M.J., Lewandowska, A.M., Llames, M.E., Matsuzaki, S.-I.S., Nodine, E.R., Nõges, P., Patil, V.P., Pomati, F., Rinke, Karsten, Rudstam, L.G., Rusak, J.A., Salmaso, N., Seltmann, C.T., Straile, D., Thackeray, S.J., Thiery, W., Urrutia‐Cordero, P., Venail, P., Verburg, P., Woolway, R.I., Zohary, T., Andersen, M.R., Bhattacharya, R., Hejzlar, J., Janatian, N., Kpodonu, A.T.N.K., Williamson, T.J., and Wilson, H.L.
- Abstract
In many regions across the globe, extreme weather events such as storms have increased in frequency, intensity, and duration due to climate change. Ecological theory predicts that such extreme events should have large impacts on ecosystem structure and function. High winds and precipitation associated with storms can affect lakes via short‐term runoff events from watersheds and physical mixing of the water column. In addition, lakes connected to rivers and streams will also experience flushing due to high flow rates. Although we have a well‐developed understanding of how wind and precipitation events can alter lake physical processes and some aspects of biogeochemical cycling, our mechanistic understanding of the emergent responses of phytoplankton communities is poor. Here we provide a comprehensive synthesis that identifies how storms interact with lake and watershed attributes and their antecedent conditions to generate changes in lake physical and chemical environments. Such changes can restructure phytoplankton communities and their dynamics, as well as result in altered ecological function (e.g., carbon, nutrient and energy cycling) in the short‐ and long‐term. We summarize the current understanding of storm‐induced phytoplankton dynamics, identify knowledge gaps with a systematic review of the literature, and suggest future research directions across a gradient of lake types and environmental conditions.
- Published
- 2020
10. A European Multi Lake Survey dataset of environmental variables, phytoplankton pigments and cyanotoxins
- Author
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Mantzouki, E., Campbell, J., van Loon, E., Visser, P., Konstantinou, I., Antoniou, M., Giuliani, G., Machado-Vieira, D., Gurjão de Oliveira, A., Maronić, D.Š., Stević, F., Pfeiffer, T.Ž., Vucelić, I.B., Žutinić, P., Udovič, M.G., Plenković-Moraj, A., Tsiarta, N., Bláha, L., Geriš, R., Fránková, M., Christoffersen, K.S., Warming, T.P., Feldmann, T., Laas, A., Panksep, K., Tuvikene, L., Kangro, K., Häggqvist, K., Salmi, P., Arvola, L., Fastner, J., Straile, D., Rothhaupt, K.O., Fonvielle, J., Grossart, H.P., Avagianos, C., Kaloudis, T., Triantis, T., Zervou, S.K., Hiskia, A., Gkelis, S., Panou, M., McCarthy, V., de Senerpont Domis, L.N., Seelen, L., Verstijnen, Y., Lürling, M., Maliaka, V., Faassen, E.J., Mantzouki, E., Campbell, J., van Loon, E., Visser, P., Konstantinou, I., Antoniou, M., Giuliani, G., Machado-Vieira, D., Gurjão de Oliveira, A., Maronić, D.Š., Stević, F., Pfeiffer, T.Ž., Vucelić, I.B., Žutinić, P., Udovič, M.G., Plenković-Moraj, A., Tsiarta, N., Bláha, L., Geriš, R., Fránková, M., Christoffersen, K.S., Warming, T.P., Feldmann, T., Laas, A., Panksep, K., Tuvikene, L., Kangro, K., Häggqvist, K., Salmi, P., Arvola, L., Fastner, J., Straile, D., Rothhaupt, K.O., Fonvielle, J., Grossart, H.P., Avagianos, C., Kaloudis, T., Triantis, T., Zervou, S.K., Hiskia, A., Gkelis, S., Panou, M., McCarthy, V., de Senerpont Domis, L.N., Seelen, L., Verstijnen, Y., Lürling, M., Maliaka, V., and Faassen, E.J.
- Abstract
Under ongoing climate change and increasing anthropogenic activity, which continuously challenge ecosystem resilience, an in-depth understanding of ecological processes is urgently needed. Lakes, as providers of numerous ecosystem services, face multiple stressors that threaten their functioning. Harmful cyanobacterial blooms are a persistent problem resulting from nutrient pollution and climate-change induced stressors, like poor transparency, increased water temperature and enhanced stratification. Consistency in data collection and analysis methods is necessary to achieve fully comparable datasets and for statistical validity, avoiding issues linked to disparate data sources. The European Multi Lake Survey (EMLS) in summer 2015 was an initiative among scientists from 27 countries to collect and analyse lake physical, chemical and biological variables in a fully standardized manner. This database includes in-situ lake variables along with nutrient, pigment and cyanotoxin data of 369 lakes in Europe, which were centrally analysed in dedicated laboratories. Publishing the EMLS methods and dataset might inspire similar initiatives to study across large geographic areas that will contribute to better understanding lake responses in a changing environment.
- Published
- 2018
11. Data from: An affordable and reliable assessment of aquatic decomposition: tailoring the Tea Bag Index to surface waters
- Author
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Seelen, Laura, Flaim, Giovanna, Keuskamp, Joost, Teurlincx, Sven, Arias Font, Raquel, Tolunay, Duygu, Fránková, Markéta, Šumberová, Kateřina, Temponeras, Maria, Lenhardt, Mirjana, Jennings, Eleanor, de Senerpont Domis, L.N., Seelen, Laura, Flaim, Giovanna, Keuskamp, Joost, Teurlincx, Sven, Arias Font, Raquel, Tolunay, Duygu, Fránková, Markéta, Šumberová, Kateřina, Temponeras, Maria, Lenhardt, Mirjana, Jennings, Eleanor, and de Senerpont Domis, L.N.
- Abstract
Litter decomposition is a vital part of the global carbon cycle as it determines not only the amount of carbon to be sequestered, but also how fast carbon re-enters the cycle. Freshwater systems play an active role in the carbon cycle as it receives, and decomposes, terrestrial litter material alongside decomposing aquatic plant litter. Decomposition of organic matter in the aquatic environment is directly controlled by water temperature and nutrient availability, which are continuously affected by global change. We adapted the Tea Bag Index (TBI), a highly standardized methodology for determining soil decomposition, for lakes by incorporating a leaching factor. By placing Lipton pyramid tea bags in the aquatic environment for 3 hours, we quantified the period of intense leaching which usually takes place prior to litter (tea) decomposition. Standard TBI methodology was followed after this step to determine how fast decomposition takes place (decomposition rate, k1) and how much of the material cannot be broken down and is thus sequestered (stabilization factor, S). A Citizen Science project was organized to test the aquatic TBI in 40 European lakes located in four climate zones, ranging from oligotrophic to hypereutrophic systems. We expected that warmer and/or eutrophic lakes would have a higher decomposition rate and a more efficient microbial community resulting in less tea material to be sequestered. The overall high decomposition rates (k1) found confirm the active role lakes play in the global carbon cycle. Across climate regions the lakes in the warmer temperate zone displayed a higher decomposition rate (k1) compared to the colder lakes in the continental and polar zones. Across trophic states, decomposition rates were higher in eutrophic lakes compared to oligotrophic lakes. Additionally, the eutrophic lakes showed a higher stabilization (S), thus a less efficient microbial community, compared to the oligotrophic lakes, although the variation within this g
- Published
- 2018
12. A European Multi Lake Survey dataset of environmental variables, phytoplankton pigments and cyanotoxins
- Author
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European Cooperation in Science and Technology, Hernández, Armand [0000-0001-7245-9863], Mantzouki, E., Campbell, James, van Loon, E., Visser, P., Konstantinou, I., Antoniou, M., Giuliani, G., Machado-Vieira, D., Gurjão de Oliveira, Alinne, Maronić, D.Š., Stević, F., Hiskia, A., Gkelis, S., Walusiak, E., Panou, M., McCarthy, V., Budzyńska, A., Perello, V.C., Kostrzewska-Szlakowska, I., Gonçalves, V., Skjelbred, B., Palomino, Roberto L., Obertegger, U., Boscaini, A., Flaim, G., Salmaso, N., Gagala, I., Cerasino, L., Mankiewicz-Boczek, J., Hansson, L. A., Grabowska, M., Karpowicz, M., Rodríguez-Pérez, E., Chmura, D., Nawrocka, L., Kozak, A., Kobos, J., Rosińska, J., Seelen, L., Toporowska, M., Pawlik-Skowronska, B., Urrutia-Cordero, Pablo, Niedźwiecki, M., Maliaka, V., Pęczuła, W., Wasilewicz, M., Napiórkowska-Krzebietke, A., Ochocka, A., Beklioğlu, M., Szeląg-Wasielewska, E., Domek, P., Teurlincx, S., Jakubowska-Krepska, N., Tavşanoğlu, ÜN., Carballeira, R., Kwasizur, K., Drastichova, I., Messyasz, B., Chomova, L., Soylu, E.N., Pasztaleniec, A., Jasser, I., Filiz, N., Antão-Geraldes, A. M., Bilgin, F., Camacho, A., Özen, A., Leira, M., Hernández, Armand, Vasconcelos, V., Remec-Rekar, S., Pfeiffer, T.Ž., Eleršek, Tina, Delgado-Martín, Jordi, Yağcı, M.A., García, D., Bezirci, G., Bláha, L., Bravo, Andrea G., Verstijnen, Y., Cereijo, J. L., Gomà, Joan, Trapote, M.C., Vegas-Vilarrúbia, Teresa, Obrador, B., García-Murcia, A., Real, M., Picazo, Antoni, Vucelić, I.B., Romans, E., Cesur, M., Çınar, Ş., Lürling, M., Levi, E., Noguero-Ribes, J., Duque, D.P., Fernández-Morán, E., Úbeda, B., Yağcı, A., Gálvez, J.Á., Marcé, Rafael, Catalán, N., Buck, Moritz, Pérez-Martínez, Carmen, Ramos-Rodríguez, E., Tsiarta, N., Žutinić, P., Iskin, U., Çapkın, K., Udovič, M.G., Cillero-Castro, C., Moreno-Ostos, Enrique, Blanco, J. M., Rodríguez, V., Plenković-Moraj, Anđelka, Montes-Pérez, J.J., Colom-Montero, W., Koreivienė, J., Rochera, C., Santamans, A. C., Ferriol, C., Romo, S., Faassen, E.J., Soria, J. M., Latour, D., Mazur-Marzec, Hanna, Mustonen, K., Pierson, D., Kasperovičienė, J., Yang, Y., Verspagen, Jolanda M. H., Çelik, K., de Senerpont Domis, L.N., Özhan, K., Dunalska, J., Carey, C.C., Paerl, Hans, Alcaraz-Párraga, P., Torokne, A., Goldyn, R., Karan, T., Bulut, C., Demir, N., Uysal, R., Pełechata, A., Karakaya, N., Koçer, M.A.T., Sieńska, J., Yilmaz, M., Bańkowska-Sobczak, A., Savadova, K., Maraşlıoğlu, F., Geriš, R., Fakioglu, Ö., Fránková, M., Morais, J., Köker, L., Bergkemper, V., Pełechaty, M., O'Leary, S., Nemova, H., Vitonytė, I., Wilk-Woźniak, E., Beirne, E., Cromie, H., Ibelings, Bas W., Christoffersen, K. S., Warming, T.P., Feldmann, T., Laas, A., Vale, M., Panksep, K., Frąk, M., Kokocinski, M., Krztoń, W., Szymański, D., Tuvikene, L., Kangro, K., Häggqvist, K., Salmi, P., Arvola, L., Fastner, J., Straile, D., Haande, S., Rothhaupt, K. O., Fonvielle, J., Krstić, S., Raposeiro, P. M., Kruk, M., Madrecka, B., Grossart, Hans-Peter, Avagianos, C., Kaloudis, T., Triantis, T., Aleksovski, B., Zervou, S. K., European Cooperation in Science and Technology, Hernández, Armand [0000-0001-7245-9863], Mantzouki, E., Campbell, James, van Loon, E., Visser, P., Konstantinou, I., Antoniou, M., Giuliani, G., Machado-Vieira, D., Gurjão de Oliveira, Alinne, Maronić, D.Š., Stević, F., Hiskia, A., Gkelis, S., Walusiak, E., Panou, M., McCarthy, V., Budzyńska, A., Perello, V.C., Kostrzewska-Szlakowska, I., Gonçalves, V., Skjelbred, B., Palomino, Roberto L., Obertegger, U., Boscaini, A., Flaim, G., Salmaso, N., Gagala, I., Cerasino, L., Mankiewicz-Boczek, J., Hansson, L. A., Grabowska, M., Karpowicz, M., Rodríguez-Pérez, E., Chmura, D., Nawrocka, L., Kozak, A., Kobos, J., Rosińska, J., Seelen, L., Toporowska, M., Pawlik-Skowronska, B., Urrutia-Cordero, Pablo, Niedźwiecki, M., Maliaka, V., Pęczuła, W., Wasilewicz, M., Napiórkowska-Krzebietke, A., Ochocka, A., Beklioğlu, M., Szeląg-Wasielewska, E., Domek, P., Teurlincx, S., Jakubowska-Krepska, N., Tavşanoğlu, ÜN., Carballeira, R., Kwasizur, K., Drastichova, I., Messyasz, B., Chomova, L., Soylu, E.N., Pasztaleniec, A., Jasser, I., Filiz, N., Antão-Geraldes, A. M., Bilgin, F., Camacho, A., Özen, A., Leira, M., Hernández, Armand, Vasconcelos, V., Remec-Rekar, S., Pfeiffer, T.Ž., Eleršek, Tina, Delgado-Martín, Jordi, Yağcı, M.A., García, D., Bezirci, G., Bláha, L., Bravo, Andrea G., Verstijnen, Y., Cereijo, J. L., Gomà, Joan, Trapote, M.C., Vegas-Vilarrúbia, Teresa, Obrador, B., García-Murcia, A., Real, M., Picazo, Antoni, Vucelić, I.B., Romans, E., Cesur, M., Çınar, Ş., Lürling, M., Levi, E., Noguero-Ribes, J., Duque, D.P., Fernández-Morán, E., Úbeda, B., Yağcı, A., Gálvez, J.Á., Marcé, Rafael, Catalán, N., Buck, Moritz, Pérez-Martínez, Carmen, Ramos-Rodríguez, E., Tsiarta, N., Žutinić, P., Iskin, U., Çapkın, K., Udovič, M.G., Cillero-Castro, C., Moreno-Ostos, Enrique, Blanco, J. M., Rodríguez, V., Plenković-Moraj, Anđelka, Montes-Pérez, J.J., Colom-Montero, W., Koreivienė, J., Rochera, C., Santamans, A. C., Ferriol, C., Romo, S., Faassen, E.J., Soria, J. M., Latour, D., Mazur-Marzec, Hanna, Mustonen, K., Pierson, D., Kasperovičienė, J., Yang, Y., Verspagen, Jolanda M. H., Çelik, K., de Senerpont Domis, L.N., Özhan, K., Dunalska, J., Carey, C.C., Paerl, Hans, Alcaraz-Párraga, P., Torokne, A., Goldyn, R., Karan, T., Bulut, C., Demir, N., Uysal, R., Pełechata, A., Karakaya, N., Koçer, M.A.T., Sieńska, J., Yilmaz, M., Bańkowska-Sobczak, A., Savadova, K., Maraşlıoğlu, F., Geriš, R., Fakioglu, Ö., Fránková, M., Morais, J., Köker, L., Bergkemper, V., Pełechaty, M., O'Leary, S., Nemova, H., Vitonytė, I., Wilk-Woźniak, E., Beirne, E., Cromie, H., Ibelings, Bas W., Christoffersen, K. S., Warming, T.P., Feldmann, T., Laas, A., Vale, M., Panksep, K., Frąk, M., Kokocinski, M., Krztoń, W., Szymański, D., Tuvikene, L., Kangro, K., Häggqvist, K., Salmi, P., Arvola, L., Fastner, J., Straile, D., Haande, S., Rothhaupt, K. O., Fonvielle, J., Krstić, S., Raposeiro, P. M., Kruk, M., Madrecka, B., Grossart, Hans-Peter, Avagianos, C., Kaloudis, T., Triantis, T., Aleksovski, B., and Zervou, S. K.
- Abstract
Under ongoing climate change and increasing anthropogenic activity, which continuously challenge ecosystem resilience, an in-depth understanding of ecological processes is urgently needed. Lakes, as providers of numerous ecosystem services, face multiple stressors that threaten their functioning. Harmful cyanobacterial blooms are a persistent problem resulting from nutrient pollution and climate-change induced stressors, like poor transparency, increased water temperature and enhanced stratification. Consistency in data collection and analysis methods is necessary to achieve fully comparable datasets and for statistical validity, avoiding issues linked to disparate data sources. The European Multi Lake Survey (EMLS) in summer 2015 was an initiative among scientists from 27 countries to collect and analyse lake physical, chemical and biological variables in a fully standardized manner. This database includes in-situ lake variables along with nutrient, pigment and cyanotoxin data of 369 lakes in Europe, which were centrally analysed in dedicated laboratories. Publishing the EMLS methods and dataset might inspire similar initiatives to study across large geographic areas that will contribute to better understanding lake responses in a changing environment.
- Published
- 2018
13. The impact of climate change on lakes in the Netherlands: a review
- Author
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Mooij, W.M., Hülsmann, S., De Senerpont Domis, L.N., Nolet, B.A., Bodelier, P.L.E., Boers, P., Pires, L.M.D., Gons, H.J., Ibelings, B.W., Noordhuis, R., Portielje, R., Wolfstein, K., Wolfstein, R., Lammens, E.H.R.R., Foodweb Studies, Plant Animal Interactions - Animal Ecology, and Microbial Wetland Ecology (MWE)
- Subjects
Primary producers ,Ecology ,Littoral zone ,Biodiversity ,Environmental science ,Climate change ,Ecosystem ,Aquatic Science ,Eutrophication ,Freshwater ecosystem ,Ecology, Evolution, Behavior and Systematics ,Trophic level - Abstract
Climate change will alter freshwater ecosystems but specific effects will vary among regions and the type of water body. Here, we give an integrative review of the observed and predicted impacts of climate change on shallow lakes in the Netherlands and put these impacts in an international perspective. Most of these lakes are man-made and have preset water levels and poorly developed littoral zones. Relevant climatic factors for these ecosystems are temperature, ice-cover and wind. Secondary factors affected by climate include nutrient loading, residence time and water levels. We reviewed the relevant literature in order to assess the impact of climate change on these lakes. We focussed on six management objectives as bioindicators for the functioning of these ecosystems: target species, nuisance species, invading species, transparency, carrying capacity and biodiversity. We conclude that climate change will likely (i) reduce the numbers of several target species of birds; (ii) favour and stabilize cyanobacterial dominance in phytoplankton communities; (iii) cause more serious incidents of botulism among waterfowl and enhance the spreading of mosquito borne diseases; (iv) benefit invaders originating from the Ponto-Caspian region; (v) stabilize turbid, phytoplankton-dominated systems, thus counteracting restoration measures; (vi) destabilize macrophyte-dominated clear-water lakes; (vii) increase the carrying capacity of primary producers, especially phytoplankton, thus mimicking eutrophication; (viii) affect higher trophic levels as a result of enhanced primary production; (ix) have a negative impact on biodiversity which is linked to the clear water state; (x) affect biodiversity by changing the disturbance regime. Water managers can counteract these developments by reduction of nutrient loading, development of the littoral zone, compartmentalization of lakes and fisheries management. [KEYWORDS: Biodiversity ; Carrying capacity ; Invading species ; Nuisance species ; Temperature ; Transparency]
- Published
- 2005
14. Onderzoek naar blauwalgenproblematiek in zwemwateren in de Alblasserwaard
- Author
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Geurts, J., de Senerpont Domis, L.N., Lurling, M., and Faassen, E.J.
- Subjects
Aquatic Ecology and Water Quality Management ,WIMEK ,Life Science ,Aquatische Ecologie en Waterkwaliteitsbeheer - Published
- 2014
15. Comment on : Blooms Bite the Hand That Feeds Them
- Author
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Faassen, E.J., de Senerpont Domis, L.N., de Waal, E., and Lurling, M.F.L.L.W.
- Subjects
Aquatic Ecology and Water Quality Management ,WIMEK ,Life Science ,Aquatische Ecologie en Waterkwaliteitsbeheer - Published
- 2014
16. Spatiotemporal variation in the distribution of chytrid parasites in diatom host populations
- Author
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Gsell, A.S., De Senerpont Domis, L.N., Naus-Wiezer, S.M.H., Helmsing, N.R., Van Donk, E., Ibelings, B.W., Aquatic Ecology (AqE), and Foodweb Studies
- Subjects
NIOO ,genetic structures ,embryonic structures - Published
- 2013
17. Een netwerk van water en mensen…
- Author
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De Senerpont Domis, L.N., Aquatische Ecologie (AqE), and AKWA
- Published
- 2013
18. Plankton dynamics under different climate conditions in tropical freshwater systems (a reply to the comment by Sarmento et al. 2013)
- Author
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De Senerpont Domis, L.N., Elser, J.J., Gsell, A.S., Huszar, V.L.M, Ibelings, B.W., Jeppesen, E., Kosten, S., Mooij, W.M., Roland, F., Sommer, U., Van Donk, E., Winder, M., Lürling, M., and Aquatic Ecology (AqE)
- Subjects
international - Abstract
1.In our recent contribution to the special issue on plankton dynamics in a fast-changing world, we outlined some general predictions of plankton dynamics in different climate regions now and in future, building on the Plankton Ecology Group (PEG) model (de Senerpont Domis et al., 2013). 2.We proposed a stylised version of plankton dynamics in Fig. 3 of our article and stated that these patterns need to be further elaborated. Our figure displays annual plankton dynamics now and in future in oligotrophic, mesotrophic and eutrophic lakes in arctic, temperate and tropical climate zones. 3.We fully agree with Sarmento, Amado & Descy (2013) that more data on tropical regions are needed, and we are looking forward to the emergence of published data from tropical regions to extend our still-limited understanding of plankton dynamics in these regions. 4.Sarmento et al. (2013) did not agree with our predictions on plankton dynamics for hydrology-driven water systems in the tropics. Unfortunately, however, Sarmento et al. (2013) did not substantiate their statements with the much-needed data on plankton dynamics in the tropics. Moreover, they merely provide an overview of precipitation patterns in the tropics, not an alternative hypothesis for our predictions.
- Published
- 2013
19. Plankton dynamics under different climatic conditions in space and time
- Author
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de Senerpont Domis, L.N., Elser, J.J., Huszar, V.L.M., Ibelings, B.W., Jeppesen, E., Kosten, S., Mooij, W.M., Roland, F., Sommer, U., van Donk, E., Winder, M., and Lurling, M.
- Subjects
Aquatic Ecology and Water Quality Management ,WIMEK ,high arctic lakes ,fresh-water cladocerans ,shallow lakes ,fungi ,Aquatische Ecologie en Waterkwaliteitsbeheer ,driven regime shifts ,north-atlantic oscillation ,seasonal succession ,central-european lake ,food webs ,top-down control ,amazonian floodplain lake - Abstract
1.Different components of the climate system have been shown to affect temporal dynamics in natural plankton communities on scales varying from days to years. The seasonal dynamics in temperate lake plankton communities, with emphasis on both physical and biological forcing factors, were captured in the 1980s in a conceptual framework, the Plankton Ecology Group (PEG) model. 2.Taking the PEG model as our starting point, we discuss anticipated changes in seasonal and long-term plankton dynamics and extend this model to other climate regions, particularly polar and tropical latitudes. Based on our improved post-PEG understanding of plankton dynamics, we also evaluate the role of microbial plankton, parasites and fish in governing plankton dynamics and distribution. 3.In polar lakes, there is usually just a single peak in plankton biomass in summer. Lengthening of the growing season under warmer conditions may lead to higher and more prolonged phytoplankton productivity. Climate-induced increases in nutrient loading in these oligotrophic waters may contribute to higher phytoplankton biomass and subsequent higher zooplankton and fish productivity. 4.In temperate lakes, a seasonal pattern with two plankton biomass peaks - in spring and summer - can shift to one with a single but longer and larger biomass peak as nutrient loading increases, with associated higher populations of zooplanktivorous fish. Climate change will exacerbate these trends by increasing nutrient loading through increased internal nutrient inputs (due to warming) and increased catchment inputs (in the case of more precipitation). 5.In tropical systems, temporal variability in precipitation can be an important driver of the seasonal development of plankton. Increases in precipitation intensity may reset the seasonal dynamics of plankton communities and favour species adapted to highly variable environments. The existing intense predation by fish on larger zooplankters may increase further, resulting in a perennially low zooplankton biomass. 6.Bacteria were not included in the original PEG model. Seasonally, bacteria vary less than the phytoplankton but often follow its patterns, particularly in colder lakes. In warmer lakes, and with future warming, a greater influx of allochthonous carbon may obscure this pattern. 7.Our analyses indicate that the consequences of climate change for plankton dynamics are, to a large extent, system specific, depending on characteristics such as food-web structure and nutrient loading. Indirect effects through nutrient loading may be more important than direct effects of temperature increase, especially for phytoplankton. However, with warming a general picture emerges of increases in bacterivory, greater cyanobacterial dominance and smaller-bodied zooplankton that are more heavily impacted by fish predation. © 2012 Blackwell Publishing Ltd.
- Published
- 2013
20. Predictability of plankton communities in an unpredictable world
- Author
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Lurling, M., de Senerpont Domis, L.N., and Aquatic Ecology (AqE)
- Subjects
Aquatic Ecology and Water Quality Management ,blooms ,WIMEK ,long-term dynamics ,shallow lakes ,fungi ,esthwaite water ,Aquatische Ecologie en Waterkwaliteitsbeheer ,NIOO ,warmer climates ,climate-change ,phytoplankton ,sense organs ,skin and connective tissue diseases ,daphnia-pulex ,fresh-waters ,peg-model - Abstract
1.Plankton ecology contributes significantly to ecological theory building, because plankton organisms are relatively easy to manipulate and have short generation times and a relatively small set of traits making them an ideal experimental model system for addressing both general ecological questions as well more system-specific questions. 2.Since the environment is changing at an unprecedented rate, there is an ongoing demand for predictions from plankton ecology on the consequences of global change. 3.In 2010, a colloquium was held on three subjects: chaos versus predictability in plankton dynamics, global patterns versus regional differences in plankton dynamics and climate-induced changes in plankton dynamics. 4.Papers in this Special Issue propose a new model of plankton dynamics under climate change in different climate zones; offer increased attention to the role of winters in resetting population dynamics; discuss the effects of climate change on ecological stoichiometry and efficiency of trophic transfer; describe the relative and interacting effects of changes in temperature and hydrology on plankton; and analyse the effects of climate change on host-parasite dynamics. 5.Important research gaps include increased monitoring of understudied climatic zones, adaptation of plankton organisms to altered environmental conditions, interactions of climate change with legacy nutrients, interactions with other anthropogenic pressures and interactions with the infochemical network. © 2013 Blackwell Publishing Ltd.
- Published
- 2013
21. The effect of small doses of toxic cyanobacterial food on temperature response of Daphnia galeata: Is bigger better?
- Author
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De Senerpont Domis, L.N., Bartosiewicz, M., Davis, Rebecca, Cerbin, S., AKWA, Aquatic Ecology (AqE), and Foodweb Studies
- Subjects
NIOO - Abstract
1.Growing evidence shows that cyanobacterial blooms thrive in warmer temperatures, underlining the importance of understanding the relationship between cyanobacterial food, temperature and performance of the key freshwater herbivore Daphnia. 2.To evaluate potential effects of toxic cyanobacterial food and warmer temperatures, we first offered populations of Daphnia galeata a mixture of a low dosage of toxic non-colony-forming cyanobacteria [Microcystis aeruginosa (PCC7806 strain) and non-toxic, good-quality food (Scenedesmus obliquus) and S. obliquus as a sole food source]. After 2 weeks on the different diets, we exposed the daphnids to different temperatures (15 °C, 20 °C and 25 °C) for 2 weeks. 3.We expected that short-term exposure to toxins would reduce population growth, but populations would consist of larger individuals (‘bigger is better’). Upon long-term exposure, however, daphnids switched to higher temperature would be forced to mature at a smaller size and produce smaller, more vulnerable, offspring with subsequent reductions in population size (‘hotter is smaller’). Conversely, populations of daphnids switched to lower temperature should be able to cope better with prolonged exposure to toxins by producing more and larger offspring, less vulnerable to toxins (‘bigger is better’). 4.The amount of the toxin microcystin incorporated in the Daphnia tissue decreased in the first 7 days of exposure, suggesting triggering of detoxification mechanisms upon first exposure. In the remainder of the experiment, the amount of microcystin incorporated in Daphnia tissue increased to high levels, showing the differences between short-term exposure and long-term exposure to low-dosage toxins. 5.Contrary to our expectations, short-term exposure to low dosages of toxic Microcystis resulted in daphnids attaining a higher population density on the mixed diet. Furthermore, on mixed diets daphnids did not increase their body mass (‘bigger is not better’), but rather decreased strongly compared to daphnids growing on pure Scenedesmus diets. A potential explanation for this observation could be a positive hormetic response on short-term exposure to low-dosage toxin, leading to individuals living longer. 6.Prolonged exposure (>14 days) to low-dosage Microcystis resulted in a strong decrease in population densities, regardless of temperature. This decrease in population densities seemed to show a lagged response to the observed decreases in clutch size. On average, clutch size was much smaller on a low-dosage Microcystis diet than on a pure Scenedesmus diet. However, this difference in response between the two diets was smaller when daphnids were exposed to higher temperatures, as daphnids growing on pure Scenedesmus diet at higher temperatures had reduced clutch size. 7.Our observations indicate that the population-level responses to prolonged exposure to low-dosage cyanobacterial toxin mask potential responses to changes in temperatures. Warmer temperatures and toxins in diet seem to trigger similar responses in Daphnia populations: smaller individuals with smaller clutch sizes. The combined effect of toxic cyanobacteria and warmer temperatures on Daphnia populations might be additive rather than synergistic.
- Published
- 2013
22. Chytrid infections and diatom spring blooms: paradoxical effects of climate warming on fungal epidemics in lakes?
- Author
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Ibelings, B.W., Gsell, A.S., Mooij, W.M., Van Donk, E., van den Wyngaert, Silke, De Senerpont Domis, L.N., and Aquatic Ecology (AqE)
- Abstract
1. We describe the dynamics of host–parasite interactions over a period of more than 30 years between the freshwater diatom Asterionella formosa and two highly virulent chytrid parasites (Rhizophydium planktonicum and Zygorhizidium planktonicum) in Lake Maarsseveen, The Netherlands. This period is characterised by a significant warming trend which is strongest in spring. 2. The key spring event in lakes, the diatom bloom, was in many years dominated by Asterionella. We examine whether and how climate warming has affected the prevalence of infection in Asterionella by chytrids. 3. In years with cold winters/early springs, a dense Asterionella bloom is followed by epidemic development of disease as high Asterionella densities greatly facilitate transmission of chytrid zoospores. This sequence of events is absent in milder winters. 4. Earlier experimental studies have shown that the parasite is almost non-infective at water temperatures below 3 °C, offering a disease-free window of opportunity for growth of Asterionella. Climate warming has reduced periods in which water temperature remains
- Published
- 2011
23. Watermozaïekcongres over klimaat verandering en aquatische ecologie: extra inspanningen nodig om KWR doelen te halen
- Author
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De Senerpont Domis, L.N., Aquatische Ecologie (AqE), and AKWA
- Published
- 2010
24. Food quality dominates the impact of food quantity on Daphnia life history: possible implications for re-oligotrophication
- Author
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Sarpe, D., De Senerpont Domis, L.N., Declerck, S.A.J., Van Donk, E., Ibelings, B.W., Sarpe, D., De Senerpont Domis, L.N., Declerck, S.A.J., Van Donk, E., and Ibelings, B.W.
- Abstract
The elemental composition of phytoplankton is highly variable compared to the relatively narrow stoichiometry of zooplankton grazers. Using a full factorial design, we tested the effects of alterations in algal elemental composition (i.e., food quality) combined with food quantity on the life history of a Daphnia galeata clone from Lake IJsselmeer. Lower food quality reduced survival, growth, and reproduction. Food quantity became important at high food quality only. The strong effect of food quality indicates the potential for a stoichiometric bottleneck in Lake IJsselmeer, resulting in less high quality food for higher trophic levels as a result of re-oligotrophication.
- Published
- 2014
25. Community stoichiometry in a changing world: combined effects of warming and eutrophication on phytoplankton dynamics
- Author
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De Senerpont Domis, L.N., Van de Waal, D.B., Helmsing, N.R., Van Donk, E., Mooij, W.M., De Senerpont Domis, L.N., Van de Waal, D.B., Helmsing, N.R., Van Donk, E., and Mooij, W.M.
- Abstract
The current changes in our climate will likely have far reaching consequences for aquatic ecosystems. These changes in the climate, however, do not act alone and are often accompanied by additional stressors such as eutrophication. Both global warming and eutrophication have been shown to affect the timing and magnitude of phytoplankton blooms. Little is known about the combined effects of rising temperatures and eutrophication on the stoichiometry of entire phytoplankton communities. We exposed a natural phytoplankton spring community to different warming and phosphorus loading scenarios using a full-factorial design. Our results demonstrate that rising temperatures promote the growth rate of an entire phytoplankton community. Furthermore, both rising temperatures and phosphorus loading stimulated the maximum biomass built up by the phytoplankton community. Rising temperatures led to higher carbon:nutrient stoichiometry of the phytoplankton community under phosphorus limited conditions. Such a shift towards higher carbon:nutrient ratios, in combination with a higher biomass build-up, suggests a temperature-driven increase in nutrient use efficiency of the phytoplankton community. Importantly, higher carbon:nutrient stoichiometry of phytoplankton is generally of poorer nutritional value for zooplankton. Thus, although warming may result in higher phytoplankton biomass, this may be accompanied by a stoichiometric mismatch between phytoplankton and their grazers, with possible consequences for the entire aquatic food web. Read More: http://www.esajournals.org/doi/abs/10.1890/13-1251.1, The current changes in our climate will likely have far reaching consequences for aquatic ecosystems. These changes in the climate, however, do not act alone and are often accompanied by additional stressors such as eutrophication. Both global warming and eutrophication have been shown to affect the timing and magnitude of phytoplankton blooms. Little is known about the combined effects of rising temperatures and eutrophication on the stoichiometry of entire phytoplankton communities. We exposed a natural phytoplankton spring community to different warming and phosphorus loading scenarios using a full-factorial design. Our results demonstrate that rising temperatures promote the growth rate of an entire phytoplankton community. Furthermore, both rising temperatures and phosphorus loading stimulated the maximum biomass built up by the phytoplankton community. Rising temperatures led to higher carbon:nutrient stoichiometry of the phytoplankton community under phosphorus limited conditions. Such a shift towards higher carbon:nutrient ratios, in combination with a higher biomass build-up, suggests a temperature-driven increase in nutrient use efficiency of the phytoplankton community. Importantly, higher carbon:nutrient stoichiometry of phytoplankton is generally of poorer nutritional value for zooplankton. Thus, although warming may result in higher phytoplankton biomass, this may be accompanied by a stoichiometric mismatch between phytoplankton and their grazers, with possible consequences for the entire aquatic food web. Read More: http://www.esajournals.org/doi/abs/10.1890/13-1251.1
- Published
- 2014
26. The host, the parasite and their environment : how parasitism and environmental variation can maintain host genetic diversity
- Author
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Universiteit Utrecht, van Donk, Ellen, Ibelings, B.W., de Senerpont Domis, L.N., Gsell, A.S., Universiteit Utrecht, van Donk, Ellen, Ibelings, B.W., de Senerpont Domis, L.N., and Gsell, A.S.
- Published
- 2013
27. Olivijn lost blauwalgenbloei niet op: mijn mening
- Author
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De Senerpont Domis, L.N., Van Donk, E., Lurling, M., Huisman, J., Van Dam, H., De Senerpont Domis, L.N., Van Donk, E., Lurling, M., Huisman, J., and Van Dam, H.
- Published
- 2013
28. Chytrid epidemics may increase genetic diversity of a diatom spring-bloom
- Author
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Gsell, A.S., De Senerpont Domis, L.N., Verhoeven, K.J.F., Van Donk, E., Ibelings, B.W., Gsell, A.S., De Senerpont Domis, L.N., Verhoeven, K.J.F., Van Donk, E., and Ibelings, B.W.
- Published
- 2013
29. Blauwalgen: ruimtelijke spreiding en de effectiviteit van fosfaatfixatieven in het remmen van rekolonisatie
- Author
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De Senerpont Domis, L.N., Lurling, M., De Senerpont Domis, L.N., and Lurling, M.
- Published
- 2013
30. Temperature alters host genotype-specific susceptibility to chytrid infection
- Author
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Gsell, A.S., De Senerpont Domis, L.N., Van Donk, E., Ibelings, B.W., Gsell, A.S., De Senerpont Domis, L.N., Van Donk, E., and Ibelings, B.W.
- Abstract
The cost of parasitism often depends on environmental conditions and host identity. Therefore, variation in the biotic and abiotic environment can have repercussions on both, species-level host-parasite interaction patterns but also on host genotype-specific susceptibility to disease. We exposed seven genetically different but concurrent strains of the diatom Asterionella formosa to one genotype of its naturally co-occurring chytrid parasite Zygorhizidium planktonicum across five environmentally relevant temperatures. We found that the thermal tolerance range of the tested parasite genotype was narrower than that of its host, providing the host with a “cold” and “hot” thermal refuge of very low or no infection. Susceptibility to disease was host genotype-specific and varied with temperature level so that no genotype was most or least resistant across all temperatures. This suggests a role of thermal variation in the maintenance of diversity in disease related traits in this phytoplankton host. The duration and intensity of chytrid parasite pressure on host populations is likely to be affected by the projected changes in temperature patterns due to climate warming both through altering temperature dependent disease susceptibility of the host and, potentially, through en- or disabling thermal host refugia. This, in turn may affect the selective strength of the parasite on the genetic architecture of the host population., The cost of parasitism often depends on environmental conditions and host identity. Therefore, variation in the biotic and abiotic environment can have repercussions on both, species-level host-parasite interaction patterns but also on host genotype-specific susceptibility to disease. We exposed seven genetically different but concurrent strains of the diatom Asterionella formosa to one genotype of its naturally co-occurring chytrid parasite Zygorhizidium planktonicum across five environmentally relevant temperatures. We found that the thermal tolerance range of the tested parasite genotype was narrower than that of its host, providing the host with a “cold” and “hot” thermal refuge of very low or no infection. Susceptibility to disease was host genotype-specific and varied with temperature level so that no genotype was most or least resistant across all temperatures. This suggests a role of thermal variation in the maintenance of diversity in disease related traits in this phytoplankton host. The duration and intensity of chytrid parasite pressure on host populations is likely to be affected by the projected changes in temperature patterns due to climate warming both through altering temperature dependent disease susceptibility of the host and, potentially, through en- or disabling thermal host refugia. This, in turn may affect the selective strength of the parasite on the genetic architecture of the host population.
- Published
- 2013
31. Effectiviteit van kunstmatige menging met de SolarBee™ om blauwalgenoverlast in de Kralingse Plas tegen te gaan.
- Author
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De Senerpont Domis, L.N., Lurling, M., De Senerpont Domis, L.N., and Lurling, M.
- Published
- 2013
32. Vlokken en Vastleggen in de Sloterplas. Deelrapport 2: Vastleggen als lange termijn maatregel
- Author
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Van Oosterhout, J.F.X., De Senerpont Domis, L.N., Lürling, M., Van Oosterhout, J.F.X., De Senerpont Domis, L.N., and Lürling, M.
- Published
- 2013
33. Onderzoek naar blauwalgenproblematiek in zwemwateren in de Alblasserwaard
- Author
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Geurts, J.J.M., Lurling, M., Faassen, E.J., De Senerpont Domis, L.N., Geurts, J.J.M., Lurling, M., Faassen, E.J., and De Senerpont Domis, L.N.
- Published
- 2013
34. Genotype-by-temperature interactions may help to maintain clonal diversity in Asterionella formosa (Bacillariophyceae)
- Author
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Gsell, A.S., De Senerpont Domis, L.N., Przytulska-Bartosiewicz, A., Mooij, W.M., Van Donk, E., Ibelings, B.W., Gsell, A.S., De Senerpont Domis, L.N., Przytulska-Bartosiewicz, A., Mooij, W.M., Van Donk, E., and Ibelings, B.W.
- Abstract
Marine and freshwater phytoplankton populations often show large clonal diversity, which is in disagreement with clonal selection of the most vigorous genotype(s). Temporal fluctuation in selection pressures in variable environments is a leading explanation for maintenance of such genetic diversity. To test the influence of temperature as a selection force in continually (seasonally) changing aquatic systems we carried out reaction norms experiments on co-occurring clonal genotypes of a ubiquitous diatom species, Asterionella formosa Hassall, across an environmentally relevant range of temperatures. We report within population genetic diversity and extensive diversity in genotype-specific reaction norms in growth rates and cell size traits. Our results showed genotype by environment interactions, indicating that no genotype could outgrow all others across all temperature environments. Subsequently, we constructed a model to simulate the relative proportion of each genotype in a hypothetical population based on genotype and temperature-specific population growth rates. This model was run with different seasonal temperature patterns. Our modeling exercise showed a succession of two to several genotypes becoming numerically dominant depending on the underlying temperature pattern. The results suggest that (temperature) context dependent fitness may contribute to the maintenance of genetic diversity in isolated populations of clonally reproducing microorganisms in temporally variable environments.
- Published
- 2012
35. The Good, the Bad and the Plenty: Interactive Effects of Food Quality and Quantity on the Growth of Different Daphnia Species
- Author
-
Bukovinszky, T., Verschoor, A.M., Helmsing, N.R., Bezemer, T.M., Bakker, E.S., Vos, M., De Senerpont Domis, L.N., Bukovinszky, T., Verschoor, A.M., Helmsing, N.R., Bezemer, T.M., Bakker, E.S., Vos, M., and De Senerpont Domis, L.N.
- Abstract
Effects of food quality and quantity on consumers are neither independent nor interchangeable. Although consumer growth and reproduction show strong variation in relation to both food quality and quantity, the effects of food quality or food quantity have usually been studied in isolation. In two experiments, we studied the growth and reproduction in three filter-feeding freshwater zooplankton species, i.e. Daphnia galeata x hyalina, D. pulicaria and D. magna, on their algal food (Scenedesmus obliquus), varying in carbon to phosphorus (C:P) ratios and quantities (concentrations). In the first experiment, we found a strong positive effect of the phosphorus content of food on growth of Daphnia, both in their early and late juvenile development. Variation in the relationship between the P-content of animals and their growth rate reflected interspecific differences in nutrient requirements. Although growth rates typically decreased as development neared maturation, this did not affect these species-specific couplings between growth rate and Daphnia P-content. In the second experiment, we examined the effects of food quality on Daphnia growth at different levels of food quantity. With the same decrease in P-content of food, species with higher estimated P-content at zero growth showed a larger increase in threshold food concentrations (i.e. food concentration sufficient to meet metabolic requirements but not growth). These results suggest that physiological processes such as maintenance and growth may in combination explain effects of food quality and quantity on consumers. Our study shows that differences in response to variation in food quality and quantity exist between species. As a consequence, species-specific effects of food quality on consumer growth will also determine how species deal with varying food levels, which has implications for resource-consumer interactions., Effects of food quality and quantity on consumers are neither independent nor interchangeable. Although consumer growth and reproduction show strong variation in relation to both food quality and quantity, the effects of food quality or food quantity have usually been studied in isolation. In two experiments, we studied the growth and reproduction in three filter-feeding freshwater zooplankton species, i.e. Daphnia galeata x hyalina, D. pulicaria and D. magna, on their algal food (Scenedesmus obliquus), varying in carbon to phosphorus (C:P) ratios and quantities (concentrations). In the first experiment, we found a strong positive effect of the phosphorus content of food on growth of Daphnia, both in their early and late juvenile development. Variation in the relationship between the P-content of animals and their growth rate reflected interspecific differences in nutrient requirements. Although growth rates typically decreased as development neared maturation, this did not affect these species-specific couplings between growth rate and Daphnia P-content. In the second experiment, we examined the effects of food quality on Daphnia growth at different levels of food quantity. With the same decrease in P-content of food, species with higher estimated P-content at zero growth showed a larger increase in threshold food concentrations (i.e. food concentration sufficient to meet metabolic requirements but not growth). These results suggest that physiological processes such as maintenance and growth may in combination explain effects of food quality and quantity on consumers. Our study shows that differences in response to variation in food quality and quantity exist between species. As a consequence, species-specific effects of food quality on consumer growth will also determine how species deal with varying food levels, which has implications for resource-consumer interactions.
- Published
- 2012
36. Rapport Analyse dataset “Boeren als waterbeheerders”
- Author
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De Senerpont Domis, L.N., Declerck, S.A.J., De Senerpont Domis, L.N., and Declerck, S.A.J.
- Published
- 2012
37. Vlokken en vastleggen in de Sloterplas. Deelrapport 1: Vlokken als korte termijn maatregel
- Author
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Van Oosterhout, J.F.X., De Senerpont Domis, L.N., Lürling, M., Van Oosterhout, J.F.X., De Senerpont Domis, L.N., and Lürling, M.
- Published
- 2012
38. Beyond the Plankton Ecology Group (PEG) Model: Mechanisms Driving Plankton Succession
- Author
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Sommer, U., Adrian, R., De Senerpont Domis, L.N., Elser, J.J., Gaedke, U., Ibelings, B.W., Jeppesen, E., Lürling, M., Molinero, J.C., Mooij, W.M., Van Donk, E., Winder, M., Sommer, U., Adrian, R., De Senerpont Domis, L.N., Elser, J.J., Gaedke, U., Ibelings, B.W., Jeppesen, E., Lürling, M., Molinero, J.C., Mooij, W.M., Van Donk, E., and Winder, M.
- Abstract
The seasonal succession of plankton is an annually repeated process of community assembly during which all major external factors and internal interactions shaping communities can be studied. A quarter of a century ago, the state of this understanding was described by the verbal plankton ecology group (PEG) model. It emphasized the role of physical factors, grazing and nutrient limitation for phytoplankton, and the role of food limitation and fish predation for zooplankton. Although originally targeted at lake ecosystems, it became also adopted by marine plankton ecologists. Since then, a suite of ecological interactions previously underestimated in importance have become research foci: overwintering of key organisms, the microbial food web, parasitism, and food quality as a limiting factor and an extended role of higher order predators. A review of the impact of these novel interactions on plankton seasonal succession reveals limited effects on gross seasonal biomass patterns, but strong effects on species replacements., The seasonal succession of plankton is an annually repeated process of community assembly during which all major external factors and internal interactions shaping communities can be studied. A quarter of a century ago, the state of this understanding was described by the verbal plankton ecology group (PEG) model. It emphasized the role of physical factors, grazing and nutrient limitation for phytoplankton, and the role of food limitation and fish predation for zooplankton. Although originally targeted at lake ecosystems, it became also adopted by marine plankton ecologists. Since then, a suite of ecological interactions previously underestimated in importance have become research foci: overwintering of key organisms, the microbial food web, parasitism, and food quality as a limiting factor and an extended role of higher order predators. A review of the impact of these novel interactions on plankton seasonal succession reveals limited effects on gross seasonal biomass patterns, but strong effects on species replacements.
- Published
- 2012
39. Challenges and opportunities for integrating lake ecosystem modelling approaches
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Mooij, W.M., Trolle, D., Jeppesen, E., Arhonditsis, G., Belolipetsky, P., Chitamwebwa, D.B.R., Degermendzhy, A.G., DeAngelis, D.L., De Senerpont Domis, L.N., Downing, A.S., Elliott, J.A., Fragoso Jr., C.R., Gaedke, U., Genova, S.N., Gulati, R.D., Håkanson, L., Hamilton, D.P., Hipsey, M.R., ‘t Hoen, P.J., Hülsmann, S., Los, F.J., Makler-Pick, V., Petzoldt, T., Prokopkin, I., Rinke, K., Schep, S.A., Tominaga, K., Van Dam, A.A., van Nes, E.H., Wells, S.A., Janse, J.H., Mooij, W.M., Trolle, D., Jeppesen, E., Arhonditsis, G., Belolipetsky, P., Chitamwebwa, D.B.R., Degermendzhy, A.G., DeAngelis, D.L., De Senerpont Domis, L.N., Downing, A.S., Elliott, J.A., Fragoso Jr., C.R., Gaedke, U., Genova, S.N., Gulati, R.D., Håkanson, L., Hamilton, D.P., Hipsey, M.R., ‘t Hoen, P.J., Hülsmann, S., Los, F.J., Makler-Pick, V., Petzoldt, T., Prokopkin, I., Rinke, K., Schep, S.A., Tominaga, K., Van Dam, A.A., van Nes, E.H., Wells, S.A., and Janse, J.H.
- Abstract
A large number and wide variety of lake ecosystem models have been developed and published during the past four decades. We identify two challenges for making further progress in this field. One such challenge is to avoid developing more models largely following the concept of others (‘reinventing the wheel’). The other challenge is to avoid focusing on only one type of model, while ignoring new and diverse approaches that have become available (‘having tunnel vision’). In this paper, we aim at improving the awareness of existing models and knowledge of concurrent approaches in lake ecosystem modelling, without covering all possible model tools and avenues. First, we present a broad variety of modelling approaches. To illustrate these approaches, we give brief descriptions of rather arbitrarily selected sets of specific models. We deal with static models (steady state and regression models), complex dynamic models (CAEDYM, CE-QUAL-W2, Delft 3D-ECO, LakeMab, LakeWeb, MyLake, PCLake, PROTECH, SALMO), structurally dynamic models and minimal dynamic models. We also discuss a group of approaches that could all be classified as individual based: super-individual models (Piscator, Charisma), physiologically structured models, stage-structured models and trait-based models. We briefly mention genetic algorithms, neural networks, Kalman filters and fuzzy logic. Thereafter, we zoom in, as an in-depth example, on the multi-decadal development and application of the lake ecosystem model PCLake and related models (PCLake Metamodel, Lake Shira Model, IPH-TRIM3D-PCLake). In the discussion, we argue that while the historical development of each approach and model is understandable given its ‘leading principle’, there are many opportunities for combining approaches. We take the point of view that a single ‘right’ approach does not exist and should not be strived for. Instead, multiple modelling approaches, applied concurrently to a given problem, can help develop an integrative view, A large number and wide variety of lake ecosystem models have been developed and published during the past four decades. We identify two challenges for making further progress in this field. One such challenge is to avoid developing more models largely following the concept of others (‘reinventing the wheel’). The other challenge is to avoid focusing on only one type of model, while ignoring new and diverse approaches that have become available (‘having tunnel vision’). In this paper, we aim at improving the awareness of existing models and knowledge of concurrent approaches in lake ecosystem modelling, without covering all possible model tools and avenues. First, we present a broad variety of modelling approaches. To illustrate these approaches, we give brief descriptions of rather arbitrarily selected sets of specific models. We deal with static models (steady state and regression models), complex dynamic models (CAEDYM, CE-QUAL-W2, Delft 3D-ECO, LakeMab, LakeWeb, MyLake, PCLake, PROTECH, SALMO), structurally dynamic models and minimal dynamic models. We also discuss a group of approaches that could all be classified as individual based: super-individual models (Piscator, Charisma), physiologically structured models, stage-structured models and trait-based models. We briefly mention genetic algorithms, neural networks, Kalman filters and fuzzy logic. Thereafter, we zoom in, as an in-depth example, on the multi-decadal development and application of the lake ecosystem model PCLake and related models (PCLake Metamodel, Lake Shira Model, IPH-TRIM3D-PCLake). In the discussion, we argue that while the historical development of each approach and model is understandable given its ‘leading principle’, there are many opportunities for combining approaches. We take the point of view that a single ‘right’ approach does not exist and should not be strived for. Instead, multiple modelling approaches, applied concurrently to a given problem, can help develop an integrative view
- Published
- 2010
40. Linking species- and ecosystem-level impacts of climate change in lakes with a complex and a minimal model
- Author
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Mooij, W.M., De Senerpont Domis, L.N., Janse, J.H., Mooij, W.M., De Senerpont Domis, L.N., and Janse, J.H.
- Abstract
To study the interaction between species- and ecosystem-level impacts of climate change, we focus on the question of how climate-induced shifts in key species affect the positive feedback loops that lock shallow lakes either in a transparent, macrophyte-dominated state or, alternatively, in a turbid, phytoplankton-dominated state. We hypothesize that climate warming will weaken the resilience of the macrophyte-dominated clear state. For the turbid state, we hypothesize that climate warming and climate-induced eutrophication will increase the dominance of cyanobacteria. Climate change will also affect shallow lakes through a changing hydrology and through climate change-induced eutrophication. We study these phenomena using two models, the full ecosystem model PCLake and a minimal dynamic model of lake phosphorus dynamics. Quantitative predictions with the complex model show that changes in nutrient loading, hydraulic loading and climate warming can all lead to shifts in ecosystem state. The minimal model helped in interpreting the non-linear behaviour of the complex model. The main output parameters of interest for water quality managers are the critical nutrient loading at which the system will switch from clear to turbid and the much lower critical nutrient loading – due to hysteresis – at which the system switches back. Another important output parameter is the chlorophyll-a level in the turbid state. For each of these three output parameters we performed a sensitivity analysis to further understand the dynamics of the complex model PCLake. This analysis showed that our model results are most sensitive to changes in temperature-dependence of cyanobacteria, planktivorous fish and zooplankton. We argue that by combining models at various levels of complexity and looking at multiple aspects of climate changes simultaneously we can develop an integrated view of the potential impact of climate change on freshwater ecosystems., To study the interaction between species- and ecosystem-level impacts of climate change, we focus on the question of how climate-induced shifts in key species affect the positive feedback loops that lock shallow lakes either in a transparent, macrophyte-dominated state or, alternatively, in a turbid, phytoplankton-dominated state. We hypothesize that climate warming will weaken the resilience of the macrophyte-dominated clear state. For the turbid state, we hypothesize that climate warming and climate-induced eutrophication will increase the dominance of cyanobacteria. Climate change will also affect shallow lakes through a changing hydrology and through climate change-induced eutrophication. We study these phenomena using two models, the full ecosystem model PCLake and a minimal dynamic model of lake phosphorus dynamics. Quantitative predictions with the complex model show that changes in nutrient loading, hydraulic loading and climate warming can all lead to shifts in ecosystem state. The minimal model helped in interpreting the non-linear behaviour of the complex model. The main output parameters of interest for water quality managers are the critical nutrient loading at which the system will switch from clear to turbid and the much lower critical nutrient loading – due to hysteresis – at which the system switches back. Another important output parameter is the chlorophyll-a level in the turbid state. For each of these three output parameters we performed a sensitivity analysis to further understand the dynamics of the complex model PCLake. This analysis showed that our model results are most sensitive to changes in temperature-dependence of cyanobacteria, planktivorous fish and zooplankton. We argue that by combining models at various levels of complexity and looking at multiple aspects of climate changes simultaneously we can develop an integrated view of the potential impact of climate change on freshwater ecosystems.
- Published
- 2009
41. Modeling lakes and reservoirs in the climate system
- Author
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MacKay, M.D., Neale, P.J., Arp, C.D., De Senerpont Domis, L.N., Fang, X., Gal, G., Jöhnk, K.D., Kirillin, G., Lenters, J.D., Litchman, E., MacIntyre, S., Marsh, P., Melack, J., Mooij, W.M., Peeters, F., Quesada, A., Schladow, S.G., Schmid, M., Spence, C., Stokes, S.L., MacKay, M.D., Neale, P.J., Arp, C.D., De Senerpont Domis, L.N., Fang, X., Gal, G., Jöhnk, K.D., Kirillin, G., Lenters, J.D., Litchman, E., MacIntyre, S., Marsh, P., Melack, J., Mooij, W.M., Peeters, F., Quesada, A., Schladow, S.G., Schmid, M., Spence, C., and Stokes, S.L.
- Abstract
Modeling studies examining the effect of lakes on regional and global climate, as well as studies on the influence of climate variability and change on aquatic ecosystems, are surveyed. Fully coupled atmosphere–land surface–lake climate models that could be used for both of these types of study simultaneously do not presently exist, though there are many applications that would benefit from such models. It is argued here that current understanding of physical and biogeochemical processes in freshwater systems is sufficient to begin to construct such models, and a path forward is proposed. The largest impediment to fully representing lakes in the climate system lies in the handling of lakes that are too small to be explicitly resolved by the climate model, and that make up the majority of the lake-covered area at the resolutions currently used by global and regional climate models. Ongoing development within the hydrological sciences community and continual improvements in model resolution should help ameliorate this issue., Modeling studies examining the effect of lakes on regional and global climate, as well as studies on the influence of climate variability and change on aquatic ecosystems, are surveyed. Fully coupled atmosphere–land surface–lake climate models that could be used for both of these types of study simultaneously do not presently exist, though there are many applications that would benefit from such models. It is argued here that current understanding of physical and biogeochemical processes in freshwater systems is sufficient to begin to construct such models, and a path forward is proposed. The largest impediment to fully representing lakes in the climate system lies in the handling of lakes that are too small to be explicitly resolved by the climate model, and that make up the majority of the lake-covered area at the resolutions currently used by global and regional climate models. Ongoing development within the hydrological sciences community and continual improvements in model resolution should help ameliorate this issue.
- Published
- 2009
42. Interaction between the macrophyte Stratiotes aloides and filamentous algae: does it indicate allelopathy?
- Author
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Mulderij, G., Mau, B., De Senerpont Domis, L.N., Smolders, A.J.P., Van Donk, E., Mulderij, G., Mau, B., De Senerpont Domis, L.N., Smolders, A.J.P., and Van Donk, E.
- Abstract
The aquatic macrophyte Stratiotes aloides Linnaeus, which has recently received attention in studies on allelopathy, has been shown to suppress phytoplankton growth. In the Netherlands, S. aloides often co-occurs with floating filamentous algae. However, filamentous algae are generally absent in close proximity to S. aloides, resulting in gaps in filamentous algae mats. We analyzed whether those gaps may be caused by allelopathic substances excreted by S. aloides or by nutrient depletion. We studied in a field survey the colonization of natural S. aloides by filamentous algae and determined in situ nutrient concentrations in natural S. aloides stands. To analyze the relative importance of allelopathy and nutrient competition in the interaction between S. aloides and filamentous algae, we carried out field experiments. Introduction of artificial (non-allelopathic) plants in natural S. aloides stands enabled us to compare the colonization by filamentous algae of both Stratiotes sp. and artificial plants. The filamentous algae were absent in close vicinity to S. aloides. Significantly lower concentrations of ortho-phosphate and potassium were observed close to S. aloides as compared with the filamentous algae. In the field experiments the artificial plants were rapidly colonized by filamentous algae, mainly Cladophera Kützing and Spirogyra Link, while all natural plants remained free of such algae. Additionally, most nutrient concentrations did not significantly differ in the proximity of artificial or natural stands of S. aloides. The concentrations of the major growth-limiting nutrients, phosphate and nitrate, were significantly higher and nonlimiting in natural Stratiotes stands. Our main conclusion is that, although allelopathic interactions between S. aloides and filamentous algae do occur under natural conditions, nutrient competition between the two can also be an important factor., The aquatic macrophyte Stratiotes aloides Linnaeus, which has recently received attention in studies on allelopathy, has been shown to suppress phytoplankton growth. In the Netherlands, S. aloides often co-occurs with floating filamentous algae. However, filamentous algae are generally absent in close proximity to S. aloides, resulting in gaps in filamentous algae mats. We analyzed whether those gaps may be caused by allelopathic substances excreted by S. aloides or by nutrient depletion. We studied in a field survey the colonization of natural S. aloides by filamentous algae and determined in situ nutrient concentrations in natural S. aloides stands. To analyze the relative importance of allelopathy and nutrient competition in the interaction between S. aloides and filamentous algae, we carried out field experiments. Introduction of artificial (non-allelopathic) plants in natural S. aloides stands enabled us to compare the colonization by filamentous algae of both Stratiotes sp. and artificial plants. The filamentous algae were absent in close vicinity to S. aloides. Significantly lower concentrations of ortho-phosphate and potassium were observed close to S. aloides as compared with the filamentous algae. In the field experiments the artificial plants were rapidly colonized by filamentous algae, mainly Cladophera Kützing and Spirogyra Link, while all natural plants remained free of such algae. Additionally, most nutrient concentrations did not significantly differ in the proximity of artificial or natural stands of S. aloides. The concentrations of the major growth-limiting nutrients, phosphate and nitrate, were significantly higher and nonlimiting in natural Stratiotes stands. Our main conclusion is that, although allelopathic interactions between S. aloides and filamentous algae do occur under natural conditions, nutrient competition between the two can also be an important factor.
- Published
- 2009
43. Critical phosphorus loading of different types of shallow lakes and the consequences for management estimated with the ecosystem model PCLake
- Author
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Janse, J.H., De Senerpont Domis, L.N., Scheffer, M., Lijklema, L., Klinge, M., Mooij, W.M., Van Liere, L., Janse, J.H., De Senerpont Domis, L.N., Scheffer, M., Lijklema, L., Klinge, M., Mooij, W.M., and Van Liere, L.
- Abstract
Shallow lakes typically can be in one of two contrasting states: a clear state with submerged macrophytes or a turbid state dominated by phytoplankton. Eutrophication may cause a switch from the clear to the turbid state, if the phosphorus loading exceeds a critical value. Recovery of the clear state is difficult as the critical loading for the switch back during oligotrophication is often lower. A system of interacting ecological processes makes both states stabilize themselves causing the observed hysteresis. The ecosystem of shallow lakes is analysed with PCLake, a dynamic model of nutrient cycling and biota – including phytoplankton, macrophytes and a simplified food web. The model was used to calculate the switchpoints in terms of critical phosphorus loading levels for a number of lake types. It turned out that the predicted critical phosphorus loadings differ per lake type, e.g. they decrease with lake area, mean depth and retention time, increase with relative marsh area and fishing intensity, and differ per sediment type. The findings were grossly comparable with empirical evidence. These outcomes were also used to build a metamodel. The results may be useful for lake management, by comparing the critical loadings for a given lake with the actual loading. If the actual loading clearly exceeds the upper switchpoint, nutrient reduction measures are recommended. If the loading approaches the upper switchpoint, or is in the intermediate range, a manager could try to increase the critical loading values of the lake, e.g. by hydromorphological measures. If the loading is well between the two switchpoints, an alternative is to force a switch by direct food web management., Shallow lakes typically can be in one of two contrasting states: a clear state with submerged macrophytes or a turbid state dominated by phytoplankton. Eutrophication may cause a switch from the clear to the turbid state, if the phosphorus loading exceeds a critical value. Recovery of the clear state is difficult as the critical loading for the switch back during oligotrophication is often lower. A system of interacting ecological processes makes both states stabilize themselves causing the observed hysteresis. The ecosystem of shallow lakes is analysed with PCLake, a dynamic model of nutrient cycling and biota – including phytoplankton, macrophytes and a simplified food web. The model was used to calculate the switchpoints in terms of critical phosphorus loading levels for a number of lake types. It turned out that the predicted critical phosphorus loadings differ per lake type, e.g. they decrease with lake area, mean depth and retention time, increase with relative marsh area and fishing intensity, and differ per sediment type. The findings were grossly comparable with empirical evidence. These outcomes were also used to build a metamodel. The results may be useful for lake management, by comparing the critical loadings for a given lake with the actual loading. If the actual loading clearly exceeds the upper switchpoint, nutrient reduction measures are recommended. If the loading approaches the upper switchpoint, or is in the intermediate range, a manager could try to increase the critical loading values of the lake, e.g. by hydromorphological measures. If the loading is well between the two switchpoints, an alternative is to force a switch by direct food web management.
- Published
- 2008
44. Can overwintering versus diapausing strategy in Daphnia determine match-mismatch events in zooplankton-algae interactions
- Author
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De Senerpont Domis, L.N., Mooij, W.M., Hülsmann, S., van Nes, E.H., Scheffer, M., De Senerpont Domis, L.N., Mooij, W.M., Hülsmann, S., van Nes, E.H., and Scheffer, M.
- Abstract
Mismatches between predator and prey due to climate change have now been documented for a number of systems. Ultimately, a mismatch may have far-reaching consequences for ecosystem functioning as decoupling of trophic relationships results in trophic cascades. Here, we examine the potential for climate change induced mismatches between zooplankton and algae during spring succession, with a focus on Daphnia and its algal food. Whereas the development of an overwintering population of daphnids may parallel shifts in phytoplankton phenology due to climate warming, changes in the photoperiod–temperature interaction may cause the emerging population of daphnids to hatch too late and mismatch their phytoplankton prey. A decoupling of the trophic relationship between the keystone herbivore Daphnia and its algal prey can result in the absence of a spring clear water phase. We extended an existing minimal model of seasonal dynamics of Daphnia and algae and varied the way the Daphnia population is started in spring, i.e., from free swimming individuals or from hatching resting eggs. Our model results show that temperature affects the timing of peak abundance in Daphnia and algae, and subsequently the timing of the clear water phase. When a population is started from a small inoculum of hatching resting eggs, extreme climate warming (+6°C) results in a decoupling of trophic relationships and the clear water phase fails to occur. In the other scenarios, the trophic relationships between Daphnia and its algal food source remain intact. Analysis of 36 temperate lakes showed that shallow lakes have a higher potential for climate induced match–mismatches, as the probability of active overwintering daphnids decreases with lake depth. Future research should point out whether lake depth is a direct causal factor in determining the presence of active overwintering daphnids or merely indicative for underlying causal factors such as fish predation and macrophyte cover., Mismatches between predator and prey due to climate change have now been documented for a number of systems. Ultimately, a mismatch may have far-reaching consequences for ecosystem functioning as decoupling of trophic relationships results in trophic cascades. Here, we examine the potential for climate change induced mismatches between zooplankton and algae during spring succession, with a focus on Daphnia and its algal food. Whereas the development of an overwintering population of daphnids may parallel shifts in phytoplankton phenology due to climate warming, changes in the photoperiod–temperature interaction may cause the emerging population of daphnids to hatch too late and mismatch their phytoplankton prey. A decoupling of the trophic relationship between the keystone herbivore Daphnia and its algal prey can result in the absence of a spring clear water phase. We extended an existing minimal model of seasonal dynamics of Daphnia and algae and varied the way the Daphnia population is started in spring, i.e., from free swimming individuals or from hatching resting eggs. Our model results show that temperature affects the timing of peak abundance in Daphnia and algae, and subsequently the timing of the clear water phase. When a population is started from a small inoculum of hatching resting eggs, extreme climate warming (+6°C) results in a decoupling of trophic relationships and the clear water phase fails to occur. In the other scenarios, the trophic relationships between Daphnia and its algal food source remain intact. Analysis of 36 temperate lakes showed that shallow lakes have a higher potential for climate induced match–mismatches, as the probability of active overwintering daphnids decreases with lake depth. Future research should point out whether lake depth is a direct causal factor in determining the presence of active overwintering daphnids or merely indicative for underlying causal factors such as fish predation and macrophyte cover.
- Published
- 2007
45. Predicting the effect of climate change on temperate shallow lakes with the ecosystem model PCLake
- Author
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Mooij, W.M., Janse, J.H., De Senerpont Domis, L.N., Hülsmann, S., Ibelings, B.W., Mooij, W.M., Janse, J.H., De Senerpont Domis, L.N., Hülsmann, S., and Ibelings, B.W.
- Abstract
Global average surface temperatures are expected to rise by about 1.4–5.8°C from the present until the year 2100. This temperature increase will affect all ecosystems on earth. For shallow lakes—which can be either in a clear water or a turbid state—this climate change will expectedly negatively affect water transparency though the prediction is far from conclusive and experimental investigations elucidating the potential climatic effects on shallow lakes are still rare. The aim of this study was to further shape and sharpens hypotheses on the impact of climate change on shallow lakes by applying an existing and well-calibrated ecosystem model, PCLake. We focused on asymptotic model behaviour for a range of temperature and loading scenarios in a factorial design. We conclude that climate change will likely lead to decreased critical nutrient loadings. Combined with an expected increase in the external nutrient loading, this will increase the probability of a shift from a clear to a turbid state. As the model predicts a higher summer chlorophyll-a concentration, a stronger dominance of cyanobacteria during summer and a reduced zooplankton abundance due to climate change, the turbid state itself is likely to become even more severe., Global average surface temperatures are expected to rise by about 1.4–5.8°C from the present until the year 2100. This temperature increase will affect all ecosystems on earth. For shallow lakes—which can be either in a clear water or a turbid state—this climate change will expectedly negatively affect water transparency though the prediction is far from conclusive and experimental investigations elucidating the potential climatic effects on shallow lakes are still rare. The aim of this study was to further shape and sharpens hypotheses on the impact of climate change on shallow lakes by applying an existing and well-calibrated ecosystem model, PCLake. We focused on asymptotic model behaviour for a range of temperature and loading scenarios in a factorial design. We conclude that climate change will likely lead to decreased critical nutrient loadings. Combined with an expected increase in the external nutrient loading, this will increase the probability of a shift from a clear to a turbid state. As the model predicts a higher summer chlorophyll-a concentration, a stronger dominance of cyanobacteria during summer and a reduced zooplankton abundance due to climate change, the turbid state itself is likely to become even more severe.
- Published
- 2007
46. Climate-induced shifts in an experimental phytoplankton community: a mechanistic approach
- Author
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De Senerpont Domis, L.N., Mooij, W.M., Huisman, J., De Senerpont Domis, L.N., Mooij, W.M., and Huisman, J.
- Abstract
Climate change is likely to have far-reaching effects on biotic interactions in aquatic ecosystems. We investigated the effect of different spring warming scenarios on the succession of three algal groups (cyanobacteria, diatoms and green algae) in 10-l microcosms. We fitted these microcosm data to a simple mechanistic model to estimate the effect of different climate warming scenarios on the population dynamics of these algal functional groups. Experimental and model results indicate that the different algal functional groups respond differently to climate warming under phosphorus-limited conditions. Whereas the successional sequence, from diatoms to green algae to cyanobacteria, was not affected by the different climate warming scenarios, cyanobacteria showed a stronger response to the different climate warming scenarios than diatoms or green algae. Both the growth rates and peak abundances of cyanobacteria were significantly higher in the average and warm spring scenarios than in the cold spring scenario. Our findings illustrate that integration of models and microcosm experiments are a useful approach in predicting the impacts of rising temperatures on the dynamics of phytoplankton communities., Climate change is likely to have far-reaching effects on biotic interactions in aquatic ecosystems. We investigated the effect of different spring warming scenarios on the succession of three algal groups (cyanobacteria, diatoms and green algae) in 10-l microcosms. We fitted these microcosm data to a simple mechanistic model to estimate the effect of different climate warming scenarios on the population dynamics of these algal functional groups. Experimental and model results indicate that the different algal functional groups respond differently to climate warming under phosphorus-limited conditions. Whereas the successional sequence, from diatoms to green algae to cyanobacteria, was not affected by the different climate warming scenarios, cyanobacteria showed a stronger response to the different climate warming scenarios than diatoms or green algae. Both the growth rates and peak abundances of cyanobacteria were significantly higher in the average and warm spring scenarios than in the cold spring scenario. Our findings illustrate that integration of models and microcosm experiments are a useful approach in predicting the impacts of rising temperatures on the dynamics of phytoplankton communities.
- Published
- 2007
47. Linking species- and ecosystem-level impacts of climate change in lakes with a complex and a minimal model
- Author
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Mooij, W.M., primary, De Senerpont Domis, L.N., additional, and Janse, J.H., additional
- Published
- 2009
- Full Text
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48. Serving many masters at once: importance of ecosystem services in (novel) lakes
- Author
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Seelen, Laurentia Maria Sibilla, Sub Ecology and Biodiversity, Ecology and Biodiversity, van Donk, Ellen, de Senerpont Domis, L.N., Lürling, M.F.L.L.W., and University Utrecht
- Subjects
Europe ,Tea Bag Index ,field survey ,survey ,quarry lakes ,ecosystem services framework ,macrophyte biodiversity ,citizen science project ,water awarenes - Abstract
Gravel and sand are essential for construction and are therefore mined continually around the world. These mining activities have resulted in the creation of numerous gravel or sand quarry lakes. In the Netherlands alone, over 500 quarry lakes can be found. In-depth research towards understanding the ecology of these man-made small deep (quarry) lakes is still lacking. Often located near or in residential areas, quarry lakes are in many instances the primary aquatic system people interact with. The ecosystem services these man-made lakes can provide are rarely quantified or qualified, however, local citizens ask various services to be supplied of these systems. Which services can be provided by a freshwater ecosystem depends to a large extent on the ecological quality of that ecosystem. In this thesis we propose a framework to enable water managers to assess the ability of a specific quarry lake to provide specific services based upon their ecological quality. For each ecosystem service we determined threshold values based upon available scientific literature, an extensive field survey or expert knowledge. This system can also be used to determine the bandwidth of specific environmental parameters needed to supply a specific service. Furthermore, we focused on the biodiversity of macrophytes which can be found in quarry lake ecosystems. We compared the macrophyte diversity and water quality of 51 quarry lakes in the Province of Noord-Brabant (the Netherlands) to the surrounding shallow water bodies. Quarry lakes are clearer, nutrient poorer and contain macrophyte species not found in the surrounding shallow waterbodies. Oligotrophic quarry lakes contribute disproportionality to the regional macrophyte species pool and should therefore be protected from anthropogenic activities that can impact these unique novel ecosystems. In the second part of this thesis we focus on the importance of including stakeholders in water management and aquatic environmental research. We describe the results for a questionnaire distributed among European citizens about water awareness. Our results showed that the amount of daily water use and effect of climate change and detrimental habits such as feeding ducks, were greatly underestimated among respondents. However, 85% of our participants indicated an interest in participating in research to understand and improve their local water quality. One effective way of including stakeholders in local water management is to start citizen science projects. To exemplify this, we adapted the TBI, a highly standardized methodology for determining soil decomposition, for use in lakes. A citizen science project was organized to test the aquatic TBI in 40 European natural and quarry lakes, located in four climate zones, ranging from oligotrophic to hypereutrophic systems. By providing standardized protocols, a website, as well as meetings, we show that collecting scientifically relevant data can go hand in hand with increasing scientific and environmental literacy in participants. Active participation by all stakeholders in the process of addressing viable options for quarry lakes is vital for inclusive water management. The lessons learned from quarry lakes can be applied in the decision process concerning the use, quality and services to be demanded from aquatic systems worldwide.
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- 2020
49. The host, the parasite and their environment : how parasitism and environmental variation can maintain host genetic diversity
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Gsell, A.S., Universiteit Utrecht, van Donk, Ellen, Ibelings, B.W., de Senerpont Domis, L.N., and University Utrecht
- Abstract
Host and parasite populations live in highly variable natural environments. This thesis explores how the population dynamics and genetic population structure of an important spring-bloom phytoplankton species, the diatom Asterionella formosa, are affected by such environmental variation and by parasitism by its fungal parasite, the chytrid Zygorhizidium planktonicum. Asterionella is often the dominant spring-bloom species in temperate lakes and rivers. The spring-bloom is a key event in the yearly seasonal dynamics of lakes and provides the first peak in primary production determining all further events in the lake foodweb. Even though Asterionella reproduces predominantly by asexual cell division, it shows high genetic diversity (i.e. high percentage of different genotypes) in natural populations in Lake Maarsseveen (NL). This is surprising as we would expect selection for the best adapted genotypes and therefore erosion of genetic diversity at population level. How genetic diversity is maintained in populations of asexually reproducing organisms is still an actively debated question in ecology. Two mechanisms, amongst others, may promote maintenance of such high population genetic diversity: (i) fluctuating selective advantage of genotypes in variable environments (i.e. genotype-by-environment interactions) and (ii) parasite mediated selection against (initially) common host genotypes. Both theories can be combined in the disease triangle concept proposed by McNew and Stevens in 1960. This concept explains the occurrence and severity of disease as an interaction and interdependency of three factors: the host, the parasite and their shared environment. In this thesis we combined field studies in a natural host-parasite population in Lake Maarsseveen with controlled laboratory experiments. We showed that, over the last 30 years, climate change has changed the parasite occurrence pattern. Experimental and field studies showed that the host has a cold and a hot thermal refuge from chytrid infection, so-called windows of infection-free growth. If winter water temperatures stay above this threshold, the parasite remains active, hampers the development of a host bloom and thereby removes its own basis for an epidemic development later in the season. Temperature is, however, not the only environmental factor that affects the population dynamics of hosts and parasites. In stratified lakes, also other abiotic environmental conditions such as light intensity and nutrient availability change with season but also with depth. Host and parasite populations responded to different environmental factors, and the importance of environmental factors changed again with depth. Moreover, high levels of parasite infection affected the genetic architecture of its host population. Laboratory experiments testing the role of temperature, phosphorus concentration and / or parasitism showed that the selective advantage and the susceptibility to disea se of different Asterionella genotypes depended on the level of such environmental factors. That means that the fitness and susceptibility to disease of a particular Asterionella genotype changed with temperature environment. Hence, environmental variability in time and space may change the potential selection pressure on hosts as well as the specificity of host-parasite interactions. Such context dependence in genotype performance can support the maintenance of genetic diversity even in an isolated population of asexually reproducing organisms
- Published
- 2013
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