Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1016/j.scitotenv.2020.144324
Lizenz creative commons licence
Titel (primär) Disentangling multiple chemical and non-chemical stressors in a lotic ecosystem using a longitudinal approach
Autor Weitere, M.; Altenburger, R.; Anlanger, C.; Baborowski, M.; Bärlund, I.; Beckers, L.-M.; Borchardt, D.; Brack, W.; Brase, L.; Busch, W. ORCID logo ; Chatzinotas, A.; Deutschmann, B.; Eligehausen, J.; Frank, K. ORCID logo ; Graeber, D.; Griebler, C.; Hagemann, J.; Herzsprung, P.; Hollert, H.; Inostroza, P.A.; Jäger, C.G.; Kallies, R.; Kamjunke, N.; Karrasch, B.; Kaschuba, S.; Kaus, A.; Klauer, B.; Knöller, K.; Koschorreck, M.; Krauss, M. ORCID logo ; Kunz, J.V.; Kurz, M.J.; Liess, M.; Mages, M.; Müller, C.; Muschket, M.; Musolff, A.; Norf, H.; Pöhlein, F.; Reiber, L.; Risse-Buhl, U.; Schramm, K.-W.; Schmitt-Jansen, M.; Schmitz, M.; Strachauer, U.; von Tümpling, W. ORCID logo ; Weber, N.; Wild, R.; Wolf, C.; Brauns, M.
Quelle Science of the Total Environment
Erscheinungsjahr 2021
Band/Volume 769
Seite von art. 144324
Sprache englisch
Topic T5 Future Landscapes
T7 Bioeconomy
T9 Healthy Planet
Keywords highlight; multiple stress running waters indicators ecological functions effect based analyses
Abstract Meeting ecological and water quality standards in lotic ecosystems is often failed due to multiple stressors. However, disentangling stressor effects and identifying relevant stressor-effect-relationships in complex environmental settings remain major challenges. By combining state-of-the-art methods from ecotoxicology and aquatic ecosystem analysis, we aimed here to disentangle the effects of multiple chemical and non-chemical stressors along a longitudinal land use gradient in a third-order river in Germany. We distinguished and evaluated four dominant stressor categories along this gradient: (1) Hydromorphological alterations: Flow diversity and substrate diversity correlated with the EU-Water Framework Directive based indicators for the quality elements macroinvertebrates, which deteriorated at the transition from near-natural reference sites to urban sites. (2) Elevated nutrient levels and eutrophication: Low to moderate nutrient concentrations together with complete canopy cover at the reference sites correlated with low densities of benthic algae (biofilms). We found no more systematic relation of algal density with nutrient concentrations at the downstream sites, suggesting that limiting concentrations are exceeded already at moderate nutrient concentrations and reduced shading by riparian vegetation. (3) Elevated organic matter levels: Wastewater treatment plants (WWTP) and stormwater drainage systems were the primary sources of bioavailable dissolved organic carbon. Consequently, planktonic bacterial production and especially extracellular enzyme activity increased downstream of those effluents showing local peaks. (4) Micropollutants and toxicity-related stress: WWTPs were the predominant source of toxic stress, resulting in a rapid increase of the toxicity for invertebrates and algae within only one order of magnitude below the acute toxic levels. This toxicity correlates negatively with the contribution of invertebrate species being sensitive towards pesticides (SPEARpesticides index), probably contributing to the loss of biodiversity recorded in response to WWTP effluents. Our longitudinal approach highlights the potential of coordinated community efforts in supplementing established monitoring methods to tackle the complex phenomenon of multiple stress.
dauerhafte UFZ-Verlinkung
Weitere, M., Altenburger, R., Anlanger, C., Baborowski, M., Bärlund, I., Beckers, L.-M., Borchardt, D., Brack, W., Brase, L., Busch, W., Chatzinotas, A., Deutschmann, B., Eligehausen, J., Frank, K., Graeber, D., Griebler, C., Hagemann, J., Herzsprung, P., Hollert, H., Inostroza, P.A., Jäger, C.G., Kallies, R., Kamjunke, N., Karrasch, B., Kaschuba, S., Kaus, A., Klauer, B., Knöller, K., Koschorreck, M., Krauss, M., Kunz, J.V., Kurz, M.J., Liess, M., Mages, M., Müller, C., Muschket, M., Musolff, A., Norf, H., Pöhlein, F., Reiber, L., Risse-Buhl, U., Schramm, K.-W., Schmitt-Jansen, M., Schmitz, M., Strachauer, U., von Tümpling, W., Weber, N., Wild, R., Wolf, C., Brauns, M. (2021):
Disentangling multiple chemical and non-chemical stressors in a lotic ecosystem using a longitudinal approach
Sci. Total Environ. 769 , art. 144324 10.1016/j.scitotenv.2020.144324