SUMMARY TALK

Climate warming decreases ecosystem resilience against eutrophication; what about the other way round?

Mariana Meerhoff

Climate change affects a myriad of processes that affect water quality and ecosystem functioning, from the watershed to the organism scale. Climate change interacts with other anthropogenic stressors, in often in a synergistic way, leading to a decrease in ecosystem resistance and resilience to external perturbations. In particular, there is a growing consensus on the idea that warming, in particular, enhances both eutrophication and its symptoms, promoting cyanobacterial blooms among others.

It has been hypothesized that eutrophication can also enhance climate warming, although the partial evidence is incipient and often contradictory due to the different processes involved.

In this presentation, I will review the main processes that are affected by climate change that lead to a weakening of ecosystem resistance and resilience against nutrient enrichment, and the growing evidence on the interaction between eutrophication and its symptoms on the carbon cycle and the climate system.