22 results on '"Donk, Ellen van"'
Search Results
2. The value of novel ecosystems : Disclosing the ecological quality of quarry lakes
- Author
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Seelen, Laura M.S., Teurlincx, Sven, Bruinsma, John, Huijsmans, Thea M.F., Donk, Ellen, van, Lürling, Miquel, Senerpont Domis, Lisette N., de, Seelen, Laura M.S., Teurlincx, Sven, Bruinsma, John, Huijsmans, Thea M.F., Donk, Ellen, van, Lürling, Miquel, and Senerpont Domis, Lisette N., de
- Abstract
Intense sand and gravel mining has created numerous man-made lakes around the world in the past century. These small quarry lakes (1–50 ha) are usually hydrologically isolated, often deep (6–40 m) and stratify during summer and in cold winters. Due to their small size, these deep man-made lakes are usually not included in the regular monitoring campaigns, e.g. as required for the European Water Framework Directive (WFD). Therefore, not much is known about the ecological functioning of these novel ecosystems. During two summers, we determined the macrophyte diversity and measured a range of physico-chemical and biological parameters in 51 quarry lakes in the catchment area of the rivers Meuse and Rhine. We compared the results of this campaign to the chemical and macrophyte sampling as performed for the WFD in the immediate surrounding shallow standing waters. Alpha (local) and beta diversity (regional), and local contribution to beta diversity were calculated for the whole region of which beta diversity was further partitioned into a true species replacement and richness difference component. Quarry lakes contain higher water quality reflected by lower nutrient and chlorophyll-a concentration compared with shallow water bodies. Additionally, quarry lakes contribute significantly to the regional macrophyte diversity pool by harboring distinctly different macrophyte communities (beta diversity — replacement). Specifically quarry lakes with a total phosphorus concentration in the water column below 35 μg P/l contribute most to beta diversity among quarry lakes. Novel ecosystems such as deep quarry lakes are often perceived as less valuable ecosystems, with strong implications regarding their management. Our results show that quarry lakes are in general of better chemical and biological quality compared with shallow standing waters. We therefore call for a more integrated assessment of the quality of quarry lakes and corresponding management strategy of these waters
- Published
- 2021
3. Warming advances virus population dynamics in a temperate freshwater plankton community
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Frenken, Thijs, Brussaard, Corina P.D., Velthuis, M., Aben, Ralf, Kazanjian, Garabet, Hilt, Sabine, Kosten, S., Donk, Ellen van, Waal, Dedmer B. Van de, Frenken, Thijs, Brussaard, Corina P.D., Velthuis, M., Aben, Ralf, Kazanjian, Garabet, Hilt, Sabine, Kosten, S., Donk, Ellen van, and Waal, Dedmer B. Van de
- Abstract
Contains fulltext : 220032.pdf (publisher's version ) (Open Access)
- Published
- 2020
4. Response of submerged macrophyte communities to external and internal restoration measures in north temperate shallow lakes
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Hilt, Sabine, Alirangues Nuñez, Marta M., Bakker, Elisabeth S., Blindow, Irmgard, Davidson, Thomas A., Gillefalk, Mikael, Hansson, Lars Anders, Janse, Jan H., Janssen, Annette B.G., Jeppesen, Erik, Kabus, Timm, Kelly, Andrea, Köhler, Jan, Lauridsen, Torben L., Mooij, Wolf M., Noordhuis, Ruurd, Phillips, Geoff, Rücker, Jacqueline, Schuster, Hans Heinrich, Søndergaard, Martin, Teurlincx, Sven, Weyer, Klaus, van de, Donk, Ellen, van, Waterstraat, Arno, Willby, Nigel, Sayer, Carl D., Hilt, Sabine, Alirangues Nuñez, Marta M., Bakker, Elisabeth S., Blindow, Irmgard, Davidson, Thomas A., Gillefalk, Mikael, Hansson, Lars Anders, Janse, Jan H., Janssen, Annette B.G., Jeppesen, Erik, Kabus, Timm, Kelly, Andrea, Köhler, Jan, Lauridsen, Torben L., Mooij, Wolf M., Noordhuis, Ruurd, Phillips, Geoff, Rücker, Jacqueline, Schuster, Hans Heinrich, Søndergaard, Martin, Teurlincx, Sven, Weyer, Klaus, van de, Donk, Ellen, van, Waterstraat, Arno, Willby, Nigel, and Sayer, Carl D.
- Abstract
Submerged macrophytes play a key role in north temperate shallow lakes by stabilizing clear-water conditions. Eutrophication has resulted in macrophyte loss and shifts to turbid conditions in many lakes. Considerable efforts have been devoted to shallow lake restoration in many countries, but long-term success depends on a stable recovery of submerged macrophytes. However, recovery patterns vary widely and remain to be fully understood. We hypothesize that reduced external nutrient loading leads to an intermediate recovery state with clear spring and turbid summer conditions similar to the pattern described for eutrophication. In contrast, lake internal restoration measures can result in transient clear-water conditions both in spring and summer and reversals to turbid conditions. Furthermore, we hypothesize that these contrasting restoration measures result in different macrophyte species composition, with added implications for seasonal dynamics due to differences in plant traits. To test these hypotheses, we analyzed data on water quality and submerged macrophytes from 49 north temperate shallow lakes that were in a turbid state and subjected to restoration measures. To study the dynamics of macrophytes during nutrient load reduction, we adapted the ecosystem model PCLake. Our survey and model simulations revealed the existence of an intermediate recovery state upon reduced external nutrient loading, characterized by spring clear-water phases and turbid summers, whereas internal lake restoration measures often resulted in clear-water conditions in spring and summer with returns to turbid conditions after some years. External and internal lake restoration measures resulted in different macrophyte communities. The intermediate recovery state following reduced nutrient loading is characterized by a few macrophyte species (mainly pondweeds) that can resist wave action allowing survival in shallowareas, germinate early in spring, have energy-rich vegetative propagules
- Published
- 2018
5. Warming enhances sedimentation and decomposition of organic carbon in shallow macrophyte-dominated systems with zero net effect on carbon burial
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Velthuis, M., Kosten, S., Aben, R.C.H., Kazanjian, Garabet, Hilt, Sabine, Peeters, Edwin T. H. M., Donk, Ellen van, Bakker, Elisabeth S., Velthuis, M., Kosten, S., Aben, R.C.H., Kazanjian, Garabet, Hilt, Sabine, Peeters, Edwin T. H. M., Donk, Ellen van, and Bakker, Elisabeth S.
- Abstract
Contains fulltext : 195210.pdf (publisher's version ) (Open Access), Temperatures have been rising throughout recent decades and are predicted to rise further in the coming century. Global warming affects carbon cycling in freshwater ecosystems, which both emit and bury substantial amounts of carbon on a global scale. Currently, most studies focus on the effect of warming on overall carbon emissions from freshwater ecosystems, while net effects on carbon budgets may strongly depend on burial in sediments. Here, we tested whether year-round warming increases the production, sedimentation, or decomposition of particulate organic carbon and eventually alters the carbon burial in a typical shallow freshwater system. We performed an indoor experiment in eight mesocosms dominated by the common submerged aquatic plant Myriophyllum spicatum testing two temperature treatments: a temperate seasonal temperature control and a warmed (+4°C) treatment (n = 4). During a full experimental year, the carbon stock in plant biomass, dissolved organic carbon in the water column, sedimented organic matter, and decomposition of plant detritus were measured. Our results showed that year-round warming nearly doubled the final carbon stock in plant biomass from 6.9 ± 1.1 g C in the control treatment to 12.8 ± 0.6 g C (mean ± SE), mainly due to a prolonged growing season in autumn. DOC concentrations did not differ between the treatments, but organic carbon sedimentation increased by 60% from 96 ± 9.6 to 152 ± 16 g C m?2 yaer?1 (mean ± SE) from control to warm treatments. Enhanced decomposition of plant detritus in the warm treatment, however, compensated for the increased sedimentation. As a result, net carbon burial was 40 ± 5.7 g C m?2 year?1 in both temperature treatments when fluxes were combined into a carbon budget model. These results indicate that warming can increase the turnover of organic carbon in shallow macrophyte-dominated systems, while not necessarily affecting net carbon burial on a system scale.
- Published
- 2018
6. Cross continental increase in methane ebullition under climate change
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Aben, R.C.H., Barros, Nathan, Donk, Ellen van, Frenken, T.H.M., Hilt, Sabine, Kazanjian, Garabet, Lamers, Leon P.M., Roelofs, Jan G.M., DelSontro, Tonya, Kosten, Sarian, Aben, R.C.H., Barros, Nathan, Donk, Ellen van, Frenken, T.H.M., Hilt, Sabine, Kazanjian, Garabet, Lamers, Leon P.M., Roelofs, Jan G.M., DelSontro, Tonya, and Kosten, Sarian
- Abstract
Contains fulltext : 181027.pdf (publisher's version ) (Open Access)
- Published
- 2017
7. Cross continental increase in methane ebullition under climate change
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Aben, Ralf C.H., Barros, Nathan, Donk, Ellen, Van, Frenken, Thijs, Hilt, Sabine, Kazanjian, Garabet, Lamers, Leon P.M., Peeters, Edwin T.H.M., Roelofs, Jan G.M., Senerpont Domis, Lisette N., De, Stephan, Susanne, Velthuis, Mandy, De Waal, Dedmer B., Van, Wik, Martin, Thornton, Brett F., Wilkinson, Jeremy, Delsontro, Tonya, Kosten, Sarian, Aben, Ralf C.H., Barros, Nathan, Donk, Ellen, Van, Frenken, Thijs, Hilt, Sabine, Kazanjian, Garabet, Lamers, Leon P.M., Peeters, Edwin T.H.M., Roelofs, Jan G.M., Senerpont Domis, Lisette N., De, Stephan, Susanne, Velthuis, Mandy, De Waal, Dedmer B., Van, Wik, Martin, Thornton, Brett F., Wilkinson, Jeremy, Delsontro, Tonya, and Kosten, Sarian
- Abstract
Methane (CH4) strongly contributes to observed global warming. As natural CH4 emissions mainly originate from wet ecosystems, it is important to unravel how climate change may affect these emissions. This is especially true for ebullition (bubble flux from sediments), a pathway that has long been underestimated but generally dominates emissions. Here we show a remarkably strong relationship between CH4 ebullition and temperature across a wide range of freshwater ecosystems on different continents using multi-seasonal CH4 ebullition data from the literature. As these temperature-ebullition relationships may have been affected by seasonal variation in organic matter availability, we also conducted a controlled year-round mesocosm experiment. Here 4 °C warming led to 51% higher total annual CH4 ebullition, while diffusion was not affected. Our combined findings suggest that global warming will strongly enhance freshwater CH4 emissions through a disproportional increase in ebullition (6-20% per 1 °C increase), contributing to global warming.
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- 2017
8. Environmental risk assessment for invasive alien species: a case study of apple snails affecting ecosystem services in Europe
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Gilioli, Gianni, Schrader, Gritta, Carlsson, Nils, Donk, Ellen van, Leeuwen, Casper H.A. van, Martín, Pablo R., Pasquali, Sara, Vilà, Montserrat, Vos, Sybren, Gilioli, Gianni, Schrader, Gritta, Carlsson, Nils, Donk, Ellen van, Leeuwen, Casper H.A. van, Martín, Pablo R., Pasquali, Sara, Vilà, Montserrat, and Vos, Sybren
- Abstract
The assessment of the risk posed by invasive alien species (IAS) to the environment is a component of increasing importance for Pest Risk Analysis. Standardized and comprehensive procedures to assess their impacts on ecosystem services have been developed only recently. The invasive apple snails (Pomacea canaliculata and P. maculata) are used as a case study to demonstrate the application of an innovative procedure assessing the potential impact of these species on shallow freshwater ecosystems with aquatic macrophytes in Europe. The apple snail, Pomacea maculata, recently established in the Ebro delta in Spain resulting in a serious threat to rice production and wetlands, having also a high risk to spread to other European wetlands. Here, the population abundance of apple snails is regarded as the main driver of ecosystem change. The effects of ecosystem resistance, resilience and pest management on snail population abundance are estimated for the short (5 years) and the long (30 years) term. Expert judgment was used to evaluate the impacts on selected ecosystem services in a worst-case scenario. Our study shows that the combined effects of apple snails are estimated to have profound effects on the ecosystem services provided by shallow, macrophyte-dominated ecosystems in Europe. This case study illustrates that quantitative estimates of environmental impacts from different IAS are feasible and useful for decision-makers and invasive species managers that have to balance costs of control efforts against environmental and economic impacts of invasive species.
- Published
- 2017
9. Evaluating early-warning indicators of critical transitions in natural aquatic ecosystems
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Gsell, A.S., Scharfenberger, Ulrike, Özkundakci, Deniz, Walters, Annika, Hansson, Lars Anders, Janssen, Annette B.G., Nõges, Peeter, Reid, Philip C., Schindler, Daniel E., Donk, Ellen Van, Dakos, Vasilis, Adrian, Rita, Gsell, A.S., Scharfenberger, Ulrike, Özkundakci, Deniz, Walters, Annika, Hansson, Lars Anders, Janssen, Annette B.G., Nõges, Peeter, Reid, Philip C., Schindler, Daniel E., Donk, Ellen Van, Dakos, Vasilis, and Adrian, Rita
- Abstract
Ecosystems can show sudden and persistent changes in state despite only incremental changes in drivers. Such critical transitions are difficult to predict, because the state of the system often shows little change before the transition. Early-warning indicators (EWIs) are hypothesized to signal the loss of system resilience and have been shown to precede critical transitions in theoretical models, paleo-climate time series, and in laboratory as well as whole lake experiments. The generalizability of EWIs for detecting critical transitions in empirical time series of natural aquatic ecosystems remains largely untested, however. Here we assessed four commonly used EWIs on long-term datasets of five freshwater ecosystems that have experienced sudden, persistent transitions and for which the relevant ecological mechanisms and drivers are well understood. These case studies were categorized by three mechanisms that can generate critical transitions between alternative states: competition, trophic cascade, and intraguild predation. Although EWIs could be detected in most of the case studies, agreement among the four indicators was low. In some cases, EWIs were detected considerably ahead of the transition. Nonetheless, our results show that at present, EWIs do not provide reliable and consistent signals of impending critical transitions despite using some of the best routinely monitored freshwater ecosystems. Our analysis strongly suggests that a priori knowledge of the underlying mechanisms driving ecosystem transitions is necessary to identify relevant state variables for successfully monitoring EWIs.
- Published
- 2016
10. What is the influence of a reduction of planktivorous and benthivorous fish on water quality in temperate eutrophic lakes? A systematic review
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Bernes, Claes, Carpenter, Stephen R., Gårdmark, Anna, Larsson, Per, Persson, Lennart, Skov, Christian, Speed, James D.M., Donk, Ellen Van, Bernes, Claes, Carpenter, Stephen R., Gårdmark, Anna, Larsson, Per, Persson, Lennart, Skov, Christian, Speed, James D.M., and Donk, Ellen Van
- Abstract
Background: In recent decades, many attempts have been made to restore eutrophic lakes through biomanipulation. Reducing the populations of planktivorous and benthivorous fish (either directly or through stocking of piscivorous fish) may induce ecosystem changes that increase water transparency and decrease the risk of algal blooms and fish kills, at least in the short term. However, the generality of biomanipulation effects on water quality across lake types and geographical regions is not known. Therefore, we have undertaken a systematic review of such effects in eutrophic lakes in temperate regions throughout the world. Methods: Searches for literature were made using online publication databases, search engines, specialist websites and bibliographies of literature reviews. Search terms were developed in English, Danish, Dutch and Swedish. Identified articles were screened for relevance using inclusion criteria set out in an a priori protocol. To reduce the risk of bias, we then critically appraised the combined evidence found on each biomanipulation. Data were extracted on outcomes such as Secchi depth and chlorophyll a concentration before, during and/or after manipulation, and on effect modifiers such as lake properties and amounts of fish removed or stocked. Results: Our searches identified more than 14,500 articles. After screening for relevance, 233 of them remained. After exclusions based on critical appraisal, our evidence base included useful data on 128 biomanipulations in 123 lakes. Of these interventions, 85% had been made in Europe and 15% in North America. Meta-analysis showed that removal of planktivores and benthivores (with or without piscivore stocking) leads to increased Secchi depth and decreased chlorophyll a concentration during intervention and the first three years afterwards. Piscivore stocking alone has no significant effect. The response of chlorophyll a levels to biomanipulation is stronger in lakes where fish removal is in
- Published
- 2015
11. Allelopathic activity of Stratiotes aloides on phytoplankton towards identification of allelopathic substances
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Mulderij, Gabi, Mau, Birgit, Donk, Ellen van, and Gross, Elisabeth
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Exudate ,Growth inhibition ,ddc:570 ,Nutrient limitation ,fungi ,Aquatic macrophyte ,Allelopathy - Abstract
The allelopathic activity of the aquatic macrophyte, Stratiotes aloides, was determined with laboratory experiments. Active compounds exuded in the medium or present in plant tissue were extracted using standard procedures and solid phase extraction (SPE). The activity towards various cyanobacteria and chlorophytes was tested in two different bioassay systems using agar plates and liquid cultures of phytoplankton. Extracts and exudates of S. aloides affected phytoplankton growth. SPE-enriched exudates and enriched water from a natural Stratiotes stand caused inhibition of target species, however, also some controls were active. Phytoplankton species exhibited differential sensitivity to extracts of S. aloides. We observed inhibitory and stimulatory effects on phytoplankton. In general, more cyanobacteria than other phytoplankton species were inhibited, and the inhibition of cyanobacteria was stronger. In most cases, nutrient (P or K) limitation of Synechococcus elongatus and Scenedesmus obliquus decreased the sensitivity of these species towards allelochemicals from Stratiotes aloides, except for P-limited cultures of Scenedesmus. The allelopathically active compound(s) from Stratiotes are moderately lipophilic and most likely no phenolic compounds. Our results indicate that allelopathy (besides nutrient interference and shading) might also account for the low phytoplankton and filamentous algae densities in the vicinity of Stratiotes plants, at least during certain phases of the life-cycle of Stratiotes.
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- 2007
12. The determination of ecological status in shallow lakes : a tested system (ECOFRAME) for implementation of the European Water Framework Directive
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Moss, Brian, Stephen, Deborah, Alvarez, Cristina, Bécares, Eloy, Bund, Wouter van de, Collings, S. E., Donk, Ellen van, Eyto, Elvira de, Feldmann, Tõnnu, Fernandez-Alaez, Camino, Fernández-Aláez, Margarita, Franken, Rob J. M., Garcia-Criado, Francisco, Gyllström, Mikael, Hansson, Lars-Anders, Irvine, Kenneth, Järvalt, Ain, Jensen, Jens Peder, Jeppesen, Erik, and Gross, Elisabeth
- Subjects
ecological status ,Water Framework Directive ,quality ,ddc:570 ,lakes ,ecotypes ,typology - Abstract
1. The European Water Framework Directive requires the determination of ecological status in European fresh and saline waters. This is to be through the establishment of a typology of surface water bodies, the determination of reference (high status) conditions in each element (ecotype) of the typology and of lower grades of status (good, moderate, poor and bad) for each ecotype. It then requires classification of the status of the water bodies and their restoration to at least good status in a specified period.2. Though there are many methods for assessing water quality, none has the scope of that defined in the Directive. The provisions of the Directive require a wide range of variables to be measured and give only general guidance as to how systems of classification should be established. This raises issuesof comparability across States and of the costs of making the determinations.3. Using expert workshops and subsequent field testing, a practicable pan-European typology and classification system has been developed for shallow lakes, which can easily be extended to all lakes. It is parsimonious in its choice of determinands, but based on current limnological understandingand therefore as cost-effective as possible.4. A core typology is described, which can be expanded easily in particular States to meet local conditions. The core includes 48 ecotypes across the entire European climate gradient and incorporates climate, lake area, geology of the catchment and conductivity.5. The classification system is founded on a liberal interpretation of Annexes in the Directive and uses variables that are inexpensive to measure and ecologically relevant. The need for taxonomic expertise is minimized.6. The scheme has been through eight iterations, two of which were tested in the field on tranches of 66 lakes. The final version, Version 8, is offered for operational testing and further refinement by statutory authorities.
- Published
- 2003
13. What is the influence on water quality in temperate eutrophic lakes of a reduction of planktivorous and benthivorous fish? A systematic review protocol
- Author
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Bernes, Claes, Carpenter, Stephen R., Gårdmark, Anna, Larsson, Per, Persson, Lennart, Skov, Christian, Donk, Ellen Van, Bernes, Claes, Carpenter, Stephen R., Gårdmark, Anna, Larsson, Per, Persson, Lennart, Skov, Christian, and Donk, Ellen Van
- Published
- 2013
14. Netwerken in het water
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Donk, Ellen van and Donk, Ellen van
- Abstract
Contains fulltext : 19176_netwinhew.pdf (publisher's version ) (Open Access)
- Published
- 2002
15. Assessing ecological quality of shallow lakes: Does knowledge of transparency suffice?
- Author
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Peeters, Edwin T.H.M., primary, Franken, Rob J.M., additional, Jeppesen, Erik, additional, Moss, Brian, additional, Bécares, Eloy, additional, Hansson, Lars-Anders, additional, Romo, Susana, additional, Kairesalo, Timo, additional, Gross, Elisabeth M., additional, Donk, Ellen van, additional, Nõges, Tiina, additional, Irvine, Kenneth, additional, Kornijów, Ryszard, additional, and Scheffer, Marten, additional
- Published
- 2009
- Full Text
- View/download PDF
16. HOST PARASITE INTERACTIONS BETWEEN FRESHWATER PHYTOPLANKTON AND CHYTRID FUNGI (CHYTRIDIOMYCOTA)
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Ibelings, Bas W., primary, De Bruin, Arnout, additional, Kagami, Maiko, additional, Rijkeboer, Machteld, additional, Brehm, Michaela, additional, and Donk, Ellen Van, additional
- Published
- 2004
- Full Text
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17. The determination of ecological status in shallow lakes — a tested system (ECOFRAME) for implementation of the European Water Framework Directive
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Moss, Brian, primary, Stephen, Deborah, additional, Alvarez, Cristina, additional, Becares, Eloy, additional, Bund, Wouter Van De, additional, Collings, S.E., additional, Donk, Ellen Van, additional, Eyto, Elvira De, additional, Feldmann, Tõnnu, additional, Fernández‐Aláez, Camino, additional, Fernández‐Aláez, Margarita, additional, Franken, Rob J.M., additional, García‐Criado, Francisco, additional, Gross, Elisabeth M., additional, Gyllström, Mikael, additional, Hansson, Lars‐Anders, additional, Irvine, Kenneth, additional, Järvalt, Ain, additional, Jensen, Jens‐Peder, additional, Jeppesen, Erik, additional, Kairesalo, Timo, additional, Kornijów, Ryszard, additional, Krause, Teet, additional, Künnap, Helen, additional, Laas, Alo, additional, Lill, Evi, additional, Lorens, Bogdan, additional, Luup, Helen, additional, Rosa Miracle, Maria, additional, Nõges, Peeter, additional, Nõges, Tiina, additional, Nykänen, Mirva, additional, Ott, Ingmar, additional, Peczula, Wojciech, additional, Peeters, Edwin T.H.M., additional, Phillips, Geoff, additional, Romo, Susanna, additional, Russell, Victoria, additional, Salujõe, Jaana, additional, Scheffer, Marten, additional, Siewertsen, Klaus, additional, Smal, Halina, additional, Tesch, Claudia, additional, Timm, Henn, additional, Tuvikene, Lea, additional, Tonno, Ilmar, additional, Virro, Taavi, additional, Vicente, Eduardo, additional, and Wilson, David, additional
- Published
- 2003
- Full Text
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18. Effects of dietary phosphorus deficiency on the abundance, phosphorus balance, and growth of Daphnia cucullata in three hypereutrophic Dutch lakes
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DeMott, William R., primary, Gulati, Ramesh D., additional, and Donk, Ellen Van, additional
- Published
- 2001
- Full Text
- View/download PDF
19. Climate warming causes regime shifts in lake food webs: A reassessment.
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Donk, Ellen Van, Santamaría, Luis, and Mooij, Wolf M.
- Subjects
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CLIMATE change , *CLIMATOLOGY , *FOOD chains , *FRESHWATER biology , *LAKES - Abstract
Comments on the article about the link between climatic warming and regime shifts in lake food webs of Scheffer et al published in one of the 2001 issues of the periodical "Limnology and Oceanography." Motivation for the reinterpretation of the empirical data; Approaches used to reassess the data.
- Published
- 2003
20. Food quality dominates the impact of food quantity on Daphnialife history: possible implications for re-oligotrophication
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Sarpe, Dirk, de Senerpont Domis, Lisette N., Declerck, Steven A.J., Donk, Ellen van, and Ibelings, Bas W.
- Abstract
AbstractThe 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
- Full Text
- View/download PDF
21. The effect of fungal parasitism on the succession of diatoms in Lake Maarsseveen I (The Netherlands)
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DONK, ELLEN VAN, primary and RINGELBERG, J., additional
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- 1983
- Full Text
- View/download PDF
22. Soil and Freshwater and Marine Sediment Food Webs: Their Structure and Function
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Krumins, Jennifer Adams, Oevelen, Dick van, Bezemer, T. Martijn, Deyn, Gerlinde B. de, Hol, W. H. Gera, Donk, Ellen van, Boer, Wietse de, Ruiter, Peter C. de, Middelburg, Jack J., Monroy, Fernando, Soetaert, Karline, Thébault, Elisa, Koppel, Johan van de, Veen, Johannes A. van, Viketoft, Maria, and Putten, Wim H. van der
- Published
- 2013
- Full Text
- View/download PDF
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