Predictability of the impact of multiple stressors on the keystone species Daphnia

Autor: Cambronero, Maria Cuenca, Marshall, Hollie, De Meester, Luc, Davidson, Thomas Alexander, Beckerman, Andrew P, Orsini, Luisa
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Cuenca Cambronero, M, Marshall, H, De Meester, L, Davidson, T A, Beckerman, A P & Orsini, L 2018, ' Predictability of the impact of multiple stressors on the keystone species Daphnia ', Scientific Reports, vol. 8, 17572 . https://doi.org/10.1038/s41598-018-35861-y
Scientific Reports, Vol 8, Iss 1, Pp 1-11 (2018)
Scientific Reports
DOI: 10.1038/s41598-018-35861-y
Popis: Eutrophication and climate change are two of the most pressing environmental issues affecting up to 50% of aquatic ecosystems worldwide. Mitigation strategies to reduce the impact of environmental change are complicated by inherent difficulties of predicting the long-term impact of multiple stressors on natural populations. Here, we investigated the impact of temperature, food levels and carbamate insecticides, in isolation and in combination, on current and historical populations of the freshwater grazer Daphnia. We used common garden and competition experiments on historical and modern populations of D. magna 'resurrected' from a lake with known history of anthropogenic eutrophication and documented increase in ambient temperature over time. We found that these populations response dramatically differed between single and multiple stressors. Whereas warming alone induced similar responses among populations, warming combined with insecticides or food limitation resulted in significantly lower fitness in the population historically exposed to pesticides. These results suggest that the negative effect of historical pesticide exposure is magnified in the presence of warming, supporting the hypothesis of synergism between chemical pollution and other stressors. ispartof: SCIENTIFIC REPORTS vol:8 issue:1 ispartof: location:England status: published
Databáze: OpenAIRE