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1. Impacts of diffuse urban stressors on stream benthic communities and ecosystem functioning: A review

Author

Colls, M., Viza, A., Zufiarre, A., Camacho-Santamans, A., Laini, A., González-Ferreras, A.M., Filipe, A.F., Pérez-Calpe, A.V., Freixa, A., Lupon, A., Santamans, A.C., Pradhan, A., Espinosa, C., Vera-Trujillo, C., Gutiérrez-Cánovas, C., Mendoza-Lera, C., Bruno, D., Mercado-Bettin, D., Morant, D., Batista, D., Cunillera-Montcusi, D., Graça, D., Vico-Oton, E., Estévez, E., Leon-Palmero, E., Suarez, E.L., Fenoy, E., Lima, E., Picazo, F., Oficialdegui, F.J., Keck, F., Gionchetta, G., Sabas, I., Pérez-Silos, I., Antunes, I., Alvarez-Manzaneda, I., de Guzmán, I., Fernandes, I., Pereira da Silva, J., Wei, J., Montes-Pérez, J.J., Trabulo, J., Ledesma, J.L.J., Fernandez-Calero, J.M., Ramião, J.P., Rubio-Rios, J., Gonzalez-Trujillo, J.D., Barral-Fraga, L., Jiménez, L., Vendrell-Puigmitja, L., Bertrans, L., Gomez-Gener, L., Rovelli, L., Thuile Bistarelli, L., Sanchez-Morales, M., Cabrerizo, M.J., Aranguren-Gassis, M., Argudo, M., Navarro-Ramos, M.J., Atristain, M., Lopez-Rojo, N., Valiente, N., Perujo, Nuria, Pereda, O., Llanos-Paez, O., Belmar, O., Tascon-Peña, O., Rodriguez-Lozano, P., de Pedro, R.S., Arias-Real, R., Bolpagni, R., del Campo, R., Poblador, S., Guareschi, S., Hilgert, S., Duarte, S., Rodriguez-Castillo, T., Chonova, T., Conejo-Orosa, T., Céspedes, V., Granados, V., Osorio, V., Vazquez, V., Martin-Vélez, V., Romero, F., Colls, M., Viza, A., Zufiarre, A., Camacho-Santamans, A., Laini, A., González-Ferreras, A.M., Filipe, A.F., Pérez-Calpe, A.V., Freixa, A., Lupon, A., Santamans, A.C., Pradhan, A., Espinosa, C., Vera-Trujillo, C., Gutiérrez-Cánovas, C., Mendoza-Lera, C., Bruno, D., Mercado-Bettin, D., Morant, D., Batista, D., Cunillera-Montcusi, D., Graça, D., Vico-Oton, E., Estévez, E., Leon-Palmero, E., Suarez, E.L., Fenoy, E., Lima, E., Picazo, F., Oficialdegui, F.J., Keck, F., Gionchetta, G., Sabas, I., Pérez-Silos, I., Antunes, I., Alvarez-Manzaneda, I., de Guzmán, I., Fernandes, I., Pereira da Silva, J., Wei, J., Montes-Pérez, J.J., Trabulo, J., Ledesma, J.L.J., Fernandez-Calero, J.M., Ramião, J.P., Rubio-Rios, J., Gonzalez-Trujillo, J.D., Barral-Fraga, L., Jiménez, L., Vendrell-Puigmitja, L., Bertrans, L., Gomez-Gener, L., Rovelli, L., Thuile Bistarelli, L., Sanchez-Morales, M., Cabrerizo, M.J., Aranguren-Gassis, M., Argudo, M., Navarro-Ramos, M.J., Atristain, M., Lopez-Rojo, N., Valiente, N., Perujo, Nuria, Pereda, O., Llanos-Paez, O., Belmar, O., Tascon-Peña, O., Rodriguez-Lozano, P., de Pedro, R.S., Arias-Real, R., Bolpagni, R., del Campo, R., Poblador, S., Guareschi, S., Hilgert, S., Duarte, S., Rodriguez-Castillo, T., Chonova, T., Conejo-Orosa, T., Céspedes, V., Granados, V., Osorio, V., Vazquez, V., Martin-Vélez, V., and Romero, F.

Abstract

Catchment urbanisation results in urban streams being exposed to a multitude of stressors. Notably, stressors originating from diffuse sources have received less attention than stressors originating from point sources. Here, advances related to diffuse urban stressors and their consequences for stream benthic communities are summarised by reviewing 92 articles. Based on the search criteria, the number of articles dealing with diffuse urban stressors in streams has been increasing, and most of them focused on North America, Europe, and China. Land use was the most common measure used to characterize diffuse stressor sources in urban streams (70.7 % of the articles characterised land use), and chemical stressors (inorganic nutrients, xenobiotics, metals, and water properties, including pH and conductivity) were more frequently reported than physical or biological stressors. A total of 53.3 % of the articles addressed the impact of urban stressors on macroinvertebrates, while 35.9 % focused on bacteria, 9.8 % on fungi, and 8.7 % on algae. Regarding ecosystem functions, almost half of the articles (43.5 %) addressed changes in community dynamics, 40.3 % addressed organic matter decomposition, and 33.9 % addressed nutrient cycling. When comparing urban and non-urban streams, the reviewed studies suggest that urbanisation negatively impacts the diversity of benthic organisms, leading to shifts in community composition. These changes imply functional degradation of streams. The results of the present review summarise the knowledge gained to date and identify its main gaps to help improve our understanding of urban streams.

Published
2023

2. Remote sensing depicts riparian vegetation responses to water stress in a humid Atlantic region

Author

Pace, G., Gutiérrez-Cánovas, C., Henriques, R., Boeing, Friedrich, Cássio, F., Pascoal, C., Pace, G., Gutiérrez-Cánovas, C., Henriques, R., Boeing, Friedrich, Cássio, F., and Pascoal, C.

Abstract

Riparian areas in the Cantabrian Atlantic ecoregion (northwest Portugal) play a key role in soil formation and conservation, regulation of nutrient and water cycle, creation of landscape aesthetic value and the preservation of biodiversity. The maintenance of their ecological integrity is crucial given the ever increase in multiple anthropogenic (water demand and agriculture) and climatic pressures (droughts and extreme events). We developed a transferable remote sensing approach, taking advantage of the latest freely available technologies (Sentinel-2 and Copernicus Land products), to detect intra-annual and inter-annual changes in riparian vegetation productivity at the river basin scale related to water stress. This study has used the normalized difference vegetation index (NDVI) to investigate riparian vegetation productivity dynamics on three different vegetation types (coniferous, broadleaved and grassland) over the past 5 years (2015-2019). Our results indicated that inter-annual seasonality differed between drier (2017) and wetter (2016) years. We found that intra-annual dynamics of NDVI were influenced by the longitudinal river zonation. Our model ranked first (r2m=0.73) showed that the productivity of riparian vegetation during the dry season was positively influenced by annual rainfall and by the type of riparian vegetation. The emergent long lags between climatic variation and riparian plant productivity provides opportunities to forecast early warnings of climatically-driven impacts. In addition, the different average productivity levels among vegetation types should be considered when assessing climatic impacts on riparian vegetation. Future applications of Sentinel 2 products could seek to distinguish riparian areas that are likely to be more vulnerable to changes in the annual water balance from those that are more resistant under longer-term changes in climate.

Published
2021

3. Impacts of multiple stressors on freshwater biota across spatial scales and ecosystems

Author

Birk, S., Chapman, D., Carvalho, L., Spears, B.M., Andersen, H.E., Argillier, C., Auer, S., Baattrup-Pedersen, A., Banin, L., Beklioglu, M., Bondar-Kunze, E., Borja, A., Branco, P., Bucak, T., Buijse, A.D., Cardoso, A.C., Couture, R.M., Cremona, F., Zwart, D. de, Feld, C.K., Ferreira, M.T., Feuchtmayr, H., Gessner, M.O., Gieswein, A., Globevnik, L., Graeber, D., Graf, W., Gutiérrez-Cánovas, C., Hanganu, J., Iskin, U., Järvinen, M., Jeppesen, E., Kotamäki, N., Kuijper, M., Lemm, J.U., Lu, S., Solheim, A.L., Mischke, U., Moe, S.J., Noges, P., Noges, T., Ormerod, S.J., Panagopoulos, Y., Phillips, G., Posthuma, L., Pouso, S., Prudhomme, C., Rankinen, K., Rasmussen, J.J., Richardson, J., Sagouis, A., Santos, J.M., Schäfer, R.B., Schinegger, R., Schmutz, S., Schneider, S.C., Schülting, L., Segurado, P., Stefanidis, K., Sures, B., Thackeray, S.J., Turunen, J., Uyarra, M.C., Venohr, M., Ohe, P.C. von der, Willby, N., Hering, D., Birk, S., Chapman, D., Carvalho, L., Spears, B.M., Andersen, H.E., Argillier, C., Auer, S., Baattrup-Pedersen, A., Banin, L., Beklioglu, M., Bondar-Kunze, E., Borja, A., Branco, P., Bucak, T., Buijse, A.D., Cardoso, A.C., Couture, R.M., Cremona, F., Zwart, D. de, Feld, C.K., Ferreira, M.T., Feuchtmayr, H., Gessner, M.O., Gieswein, A., Globevnik, L., Graeber, D., Graf, W., Gutiérrez-Cánovas, C., Hanganu, J., Iskin, U., Järvinen, M., Jeppesen, E., Kotamäki, N., Kuijper, M., Lemm, J.U., Lu, S., Solheim, A.L., Mischke, U., Moe, S.J., Noges, P., Noges, T., Ormerod, S.J., Panagopoulos, Y., Phillips, G., Posthuma, L., Pouso, S., Prudhomme, C., Rankinen, K., Rasmussen, J.J., Richardson, J., Sagouis, A., Santos, J.M., Schäfer, R.B., Schinegger, R., Schmutz, S., Schneider, S.C., Schülting, L., Segurado, P., Stefanidis, K., Sures, B., Thackeray, S.J., Turunen, J., Uyarra, M.C., Venohr, M., Ohe, P.C. von der, Willby, N., and Hering, D.

Abstract

Contains fulltext : 228877pub.pdf (Publisher’s version ) (Closed access) Contains fulltext : 228877pos.pdf (Author’s version postprint ) (Open Access)

Published
2020

4. Combined Effects of Land-use Intensification and Plant Invasion on Native Communities

Author

Universidad de Sevilla. Departamento de Biología Vegetal y Ecología, Ministerio de Economía y Competitividad (MINECO). España, Portuguese Foundation for Science and Technology (FCT). Portugal, Junta de Castilla-La Mancha, Junta de Andalucía, Programa Severo Ochoa, Gutiérrez Cánovas, C., Sánchez Fernández, D., González Moreno, P., Mateos Naranjo, Enrique, Castro Díez, P., Vilà, Montserrat, Universidad de Sevilla. Departamento de Biología Vegetal y Ecología, Ministerio de Economía y Competitividad (MINECO). España, Portuguese Foundation for Science and Technology (FCT). Portugal, Junta de Castilla-La Mancha, Junta de Andalucía, Programa Severo Ochoa, Gutiérrez Cánovas, C., Sánchez Fernández, D., González Moreno, P., Mateos Naranjo, Enrique, Castro Díez, P., and Vilà, Montserrat

Abstract

Land-use intensification (LUI) and biological invasions are two of the most important global change pressures driving biodiversity loss. However, their combined impacts on biological communities have been seldom explored, which may result in misleading ecological assessments or mitigation actions. Based on an extensive field survey of 445 paired invaded and control plots of coastal vegetation in SW Spain, we explored the joint effects of LUI (agricultural and urban intensification) and invasion on the taxonomic and functional richness, mean plant height and leaf area of native plants. Our survey covered five invasive species with contrasting functional similarity and competitive ability in relation to the native community. We modeled the response of native communities for the overall and invader-specific datasets, and determined if invader-native functional differences could influence the combined impacts of LUI and invasion. Overall, we found that urban intensification reduced taxonomic richness more strongly at invaded plots (synergistic interactive effects). In contrast, functional richness loss caused by urban intensification was less pronounced at invaded plots (antagonistic interactive effects). Overall models showed also that urban intensification led to reduced mean leaf area, while agriculture was linked to higher mean plant height. When exploring invader-specific models, we observed that the combined effects of agricultural and urban intensification with invasion were heterogeneous. At invaded plots, invader-native functional differences accounted for part of this variability. Our findings demonstrate the importance of considering the interactive effects of global change pressures for a better assessment and management of ecosystems.

Published
2020

5. Impacts of multiple stressors on freshwater biota across spatial scales and ecosystems

Author

Birk, S., Chapman, D., Carvalho, L., Spears, B.M., Andersen, H.E., Argillier, C., Auer, S., Baattrup-Pedersen, A., Banin, L., Beklioglu, M., Bondar-Kunze, E., Borja, A., Branco, P., Bucak, T., Buijse, A.D., Cardoso, A.C., Couture, R.M., Cremona, F., Zwart, D. de, Feld, C.K., Ferreira, M.T., Feuchtmayr, H., Gessner, M.O., Gieswein, A., Globevnik, L., Graeber, D., Graf, W., Gutiérrez-Cánovas, C., Hanganu, J., Iskin, U., Järvinen, M., Jeppesen, E., Kotamäki, N., Kuijper, M., Lemm, J.U., Lu, S., Solheim, A.L., Mischke, U., Moe, S.J., Noges, P., Noges, T., Ormerod, S.J., Panagopoulos, Y., Phillips, G., Posthuma, L., Pouso, S., Prudhomme, C., Rankinen, K., Rasmussen, J.J., Richardson, J., Sagouis, A., Santos, J.M., Schäfer, R.B., Schinegger, R., Schmutz, S., Schneider, S.C., Schülting, L., Segurado, P., Stefanidis, K., Sures, B., Thackeray, S.J., Turunen, J., Uyarra, M.C., Venohr, M., Ohe, P.C. von der, Willby, N., Hering, D., Birk, S., Chapman, D., Carvalho, L., Spears, B.M., Andersen, H.E., Argillier, C., Auer, S., Baattrup-Pedersen, A., Banin, L., Beklioglu, M., Bondar-Kunze, E., Borja, A., Branco, P., Bucak, T., Buijse, A.D., Cardoso, A.C., Couture, R.M., Cremona, F., Zwart, D. de, Feld, C.K., Ferreira, M.T., Feuchtmayr, H., Gessner, M.O., Gieswein, A., Globevnik, L., Graeber, D., Graf, W., Gutiérrez-Cánovas, C., Hanganu, J., Iskin, U., Järvinen, M., Jeppesen, E., Kotamäki, N., Kuijper, M., Lemm, J.U., Lu, S., Solheim, A.L., Mischke, U., Moe, S.J., Noges, P., Noges, T., Ormerod, S.J., Panagopoulos, Y., Phillips, G., Posthuma, L., Pouso, S., Prudhomme, C., Rankinen, K., Rasmussen, J.J., Richardson, J., Sagouis, A., Santos, J.M., Schäfer, R.B., Schinegger, R., Schmutz, S., Schneider, S.C., Schülting, L., Segurado, P., Stefanidis, K., Sures, B., Thackeray, S.J., Turunen, J., Uyarra, M.C., Venohr, M., Ohe, P.C. von der, Willby, N., and Hering, D.

Abstract

Contains fulltext : 228877pub.pdf (Publisher’s version ) (Closed access) Contains fulltext : 228877pos.pdf (Author’s version postprint ) (Open Access)

Published
2020

6. Impacts of multiple stressors on freshwater biota across spatial scales and ecosystems

Author

Birk, S., Chapman, D., Carvalho, L., Spears, B.M., Andersen, H.E., Argillier, C., Auer, S., Baattrup-Pedersen, A., Banin, L., Beklioglu, M., Bondar-Kunze, E., Borja, A., Branco, P., Bucak, T., Buijse, A.D., Cardoso, A.C., Couture, R.M., Cremona, F., Zwart, D. de, Feld, C.K., Ferreira, M.T., Feuchtmayr, H., Gessner, M.O., Gieswein, A., Globevnik, L., Graeber, D., Graf, W., Gutiérrez-Cánovas, C., Hanganu, J., Iskin, U., Järvinen, M., Jeppesen, E., Kotamäki, N., Kuijper, M., Lemm, J.U., Lu, S., Solheim, A.L., Mischke, U., Moe, S.J., Noges, P., Noges, T., Ormerod, S.J., Panagopoulos, Y., Phillips, G., Posthuma, L., Pouso, S., Prudhomme, C., Rankinen, K., Rasmussen, J.J., Richardson, J., Sagouis, A., Santos, J.M., Schäfer, R.B., Schinegger, R., Schmutz, S., Schneider, S.C., Schülting, L., Segurado, P., Stefanidis, K., Sures, B., Thackeray, S.J., Turunen, J., Uyarra, M.C., Venohr, M., Ohe, P.C. von der, Willby, N., Hering, D., Birk, S., Chapman, D., Carvalho, L., Spears, B.M., Andersen, H.E., Argillier, C., Auer, S., Baattrup-Pedersen, A., Banin, L., Beklioglu, M., Bondar-Kunze, E., Borja, A., Branco, P., Bucak, T., Buijse, A.D., Cardoso, A.C., Couture, R.M., Cremona, F., Zwart, D. de, Feld, C.K., Ferreira, M.T., Feuchtmayr, H., Gessner, M.O., Gieswein, A., Globevnik, L., Graeber, D., Graf, W., Gutiérrez-Cánovas, C., Hanganu, J., Iskin, U., Järvinen, M., Jeppesen, E., Kotamäki, N., Kuijper, M., Lemm, J.U., Lu, S., Solheim, A.L., Mischke, U., Moe, S.J., Noges, P., Noges, T., Ormerod, S.J., Panagopoulos, Y., Phillips, G., Posthuma, L., Pouso, S., Prudhomme, C., Rankinen, K., Rasmussen, J.J., Richardson, J., Sagouis, A., Santos, J.M., Schäfer, R.B., Schinegger, R., Schmutz, S., Schneider, S.C., Schülting, L., Segurado, P., Stefanidis, K., Sures, B., Thackeray, S.J., Turunen, J., Uyarra, M.C., Venohr, M., Ohe, P.C. von der, Willby, N., and Hering, D.

Abstract

Contains fulltext : 228877pub.pdf (Publisher’s version ) (Closed access) Contains fulltext : 228877pos.pdf (Author’s version postprint ) (Open Access)

Published
2020

7. Combined Effects of Land-use Intensification and Plant Invasion on Native Communities

Author

Universidad de Sevilla. Departamento de Biología Vegetal y Ecología, Ministerio de Economía y Competitividad (MINECO). España, Portuguese Foundation for Science and Technology (FCT). Portugal, Junta de Castilla-La Mancha, Junta de Andalucía, Programa Severo Ochoa, Gutiérrez Cánovas, C., Sánchez Fernández, D., González Moreno, P., Mateos Naranjo, Enrique, Castro Díez, P., Vilà, Montserrat, Universidad de Sevilla. Departamento de Biología Vegetal y Ecología, Ministerio de Economía y Competitividad (MINECO). España, Portuguese Foundation for Science and Technology (FCT). Portugal, Junta de Castilla-La Mancha, Junta de Andalucía, Programa Severo Ochoa, Gutiérrez Cánovas, C., Sánchez Fernández, D., González Moreno, P., Mateos Naranjo, Enrique, Castro Díez, P., and Vilà, Montserrat

Abstract

Land-use intensification (LUI) and biological invasions are two of the most important global change pressures driving biodiversity loss. However, their combined impacts on biological communities have been seldom explored, which may result in misleading ecological assessments or mitigation actions. Based on an extensive field survey of 445 paired invaded and control plots of coastal vegetation in SW Spain, we explored the joint effects of LUI (agricultural and urban intensification) and invasion on the taxonomic and functional richness, mean plant height and leaf area of native plants. Our survey covered five invasive species with contrasting functional similarity and competitive ability in relation to the native community. We modeled the response of native communities for the overall and invader-specific datasets, and determined if invader-native functional differences could influence the combined impacts of LUI and invasion. Overall, we found that urban intensification reduced taxonomic richness more strongly at invaded plots (synergistic interactive effects). In contrast, functional richness loss caused by urban intensification was less pronounced at invaded plots (antagonistic interactive effects). Overall models showed also that urban intensification led to reduced mean leaf area, while agriculture was linked to higher mean plant height. When exploring invader-specific models, we observed that the combined effects of agricultural and urban intensification with invasion were heterogeneous. At invaded plots, invader-native functional differences accounted for part of this variability. Our findings demonstrate the importance of considering the interactive effects of global change pressures for a better assessment and management of ecosystems.

Published
2020

8. Combined Effects of Land-use Intensification and Plant Invasion on Native Communities

Author

Universidad de Sevilla. Departamento de Biología Vegetal y Ecología, Ministerio de Economía y Competitividad (MINECO). España, Portuguese Foundation for Science and Technology (FCT). Portugal, Junta de Castilla-La Mancha, Junta de Andalucía, Programa Severo Ochoa, Gutiérrez Cánovas, C., Sánchez Fernández, D., González Moreno, P., Mateos Naranjo, Enrique, Castro Díez, P., Vilà, Montserrat, Universidad de Sevilla. Departamento de Biología Vegetal y Ecología, Ministerio de Economía y Competitividad (MINECO). España, Portuguese Foundation for Science and Technology (FCT). Portugal, Junta de Castilla-La Mancha, Junta de Andalucía, Programa Severo Ochoa, Gutiérrez Cánovas, C., Sánchez Fernández, D., González Moreno, P., Mateos Naranjo, Enrique, Castro Díez, P., and Vilà, Montserrat

Abstract

Land-use intensification (LUI) and biological invasions are two of the most important global change pressures driving biodiversity loss. However, their combined impacts on biological communities have been seldom explored, which may result in misleading ecological assessments or mitigation actions. Based on an extensive field survey of 445 paired invaded and control plots of coastal vegetation in SW Spain, we explored the joint effects of LUI (agricultural and urban intensification) and invasion on the taxonomic and functional richness, mean plant height and leaf area of native plants. Our survey covered five invasive species with contrasting functional similarity and competitive ability in relation to the native community. We modeled the response of native communities for the overall and invader-specific datasets, and determined if invader-native functional differences could influence the combined impacts of LUI and invasion. Overall, we found that urban intensification reduced taxonomic richness more strongly at invaded plots (synergistic interactive effects). In contrast, functional richness loss caused by urban intensification was less pronounced at invaded plots (antagonistic interactive effects). Overall models showed also that urban intensification led to reduced mean leaf area, while agriculture was linked to higher mean plant height. When exploring invader-specific models, we observed that the combined effects of agricultural and urban intensification with invasion were heterogeneous. At invaded plots, invader-native functional differences accounted for part of this variability. Our findings demonstrate the importance of considering the interactive effects of global change pressures for a better assessment and management of ecosystems.

Published
2020

9. Impacts of multiple stressors on freshwater biota across spatial scales and ecosystems

Author

Birk, S., Chapman, D., Carvalho, L., Spears, B.M., Andersen, H.E., Argillier, C., Auer, S., Baattrup-Pedersen, A., Banin, L., Beklioğlu, M., Bondar-Kunze, E., Borja, A., Branco, P., Bucak, T., Buijse, A.D., Cardoso, A.C., Couture, R.-M., Cremona, F., de Zwart, D., Feld, C.K., Ferreira, M.T., Feuchtmayr, H., Gessner, M.O., Gieswein, A., Globevnik, L., Graeber, Daniel, Graf, W., Gutiérrez-Cánovas, C., Hanganu, J., Işkın, U., Järvinen, M., Jeppesen, E., Kotamäki, N., Kuijper, M., Lemm, J.U., Lu, S., Lyche Solheim, A., Mischke, U., Moe, S.J., Nõges, P., Nõges, T., Ormerod, S.J., Panagopoulos, Y., Phillips, G., Posthuma, L., Pouso, S., Prudhomme, C., Rankinen, K., Rasmussen, J.J., Richardson, J., Sagouis, A., Santos, J.M., Schäfer, R.B., Schinegger, R., Schmutz, S., Schneider, S.C., Schülting, L., Segurado, P., Stefanidis, K., Sures, B., Thackeray, S.J., Turunen, J., Uyarra, M.C., Venohr, M., von der Ohe, P.C., Willby, N., Hering, D., Birk, S., Chapman, D., Carvalho, L., Spears, B.M., Andersen, H.E., Argillier, C., Auer, S., Baattrup-Pedersen, A., Banin, L., Beklioğlu, M., Bondar-Kunze, E., Borja, A., Branco, P., Bucak, T., Buijse, A.D., Cardoso, A.C., Couture, R.-M., Cremona, F., de Zwart, D., Feld, C.K., Ferreira, M.T., Feuchtmayr, H., Gessner, M.O., Gieswein, A., Globevnik, L., Graeber, Daniel, Graf, W., Gutiérrez-Cánovas, C., Hanganu, J., Işkın, U., Järvinen, M., Jeppesen, E., Kotamäki, N., Kuijper, M., Lemm, J.U., Lu, S., Lyche Solheim, A., Mischke, U., Moe, S.J., Nõges, P., Nõges, T., Ormerod, S.J., Panagopoulos, Y., Phillips, G., Posthuma, L., Pouso, S., Prudhomme, C., Rankinen, K., Rasmussen, J.J., Richardson, J., Sagouis, A., Santos, J.M., Schäfer, R.B., Schinegger, R., Schmutz, S., Schneider, S.C., Schülting, L., Segurado, P., Stefanidis, K., Sures, B., Thackeray, S.J., Turunen, J., Uyarra, M.C., Venohr, M., von der Ohe, P.C., Willby, N., and Hering, D.

Abstract

Climate and land-use change drive a suite of stressors that shape ecosystems and interact to yield complex ecological responses (that is, additive, antagonistic and synergistic effects). We know little about the spatial scales relevant for the outcomes of such interactions and little about effect sizes. These knowledge gaps need to be filled to underpin future land management decisions or climate mitigation interventions for protecting and restoring freshwater ecosystems. This study combines data across scales from 33 mesocosm experiments with those from 14 river basins and 22 cross-basin studies in Europe, producing 174 combinations of paired-stressor effects on a biological response variable. Generalized linear models showed that only one of the two stressors had a significant effect in 39% of the analysed cases, 28% of the paired-stressor combinations resulted in additive effects and 33% resulted in interactive (antagonistic, synergistic, opposing or reversal) effects. For lakes, the frequencies of additive and interactive effects were similar for all spatial scales addressed, while for rivers these frequencies increased with scale. Nutrient enrichment was the overriding stressor for lakes, with effects generally exceeding those of secondary stressors. For rivers, the effects of nutrient enrichment were dependent on the specific stressor combination and biological response variable. These results vindicate the traditional focus of lake restoration and management on nutrient stress, while highlighting that river management requires more bespoke management solutions.

Published
2020

10. Multiple stressor effects on biological quality elements in the Ebro River: Present diagnosis and predicted responses

Author

Herrero, A., Gutiérrez-Cánovas, C., Vigiak, O., Lutz, Stefanie, Kumar, Rohini, Gampe, D., Huber-García, V., Ludwig, R., Batalla, R., Sabater, S., Herrero, A., Gutiérrez-Cánovas, C., Vigiak, O., Lutz, Stefanie, Kumar, Rohini, Gampe, D., Huber-García, V., Ludwig, R., Batalla, R., and Sabater, S.

Abstract

Multiple abiotic stressors affect the ecological status of water bodies. The status of waterbodies in the Ebro catchment (NE Spain) is evaluated using the biological quality elements (BQEs) of diatoms, invertebrates and macrophytes. The multi-stressor influence on the three BQEs was evaluated using the monitoring dataset available from the catchment water authority. Nutrient concentrations, especially total phosphorus (TP), affected most of the analyzed BQEs, while changes in mean discharge, water temperature, or river morphology did not show significant influences. Linear statistical models were used to evaluate the change of water bodies' ecological status under different combinations of future socioeconomic and climate scenarios. Changes in land use, rainfall, water temperature, mean discharge, TP and nitrate concentrations were modeled according to the future scenarios. These revealed an evolution of the abiotic stressors that could lead to a general decrease in the ecosystem quality of water bodies within the Ebro catchment. This deterioration was especially evidenced on the diatoms and invertebrate biological indices, mainly because of the foreseen increase in TP concentrations. Water bodies located in the headwaters were seen as the most sensitive to future changes.

Published
2018

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