ECOLAB > Agenda > Fresh perspectives on fresh waters: responses of ecosystem processes to global change

Fresh perspectives on fresh waters: responses of ecosystem processes to global change

Séminaire le 22 nov 2018 à 13h00

Intervenant : Prof. Mark O. Gessner

Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB) and Department of Ecology Berlin Institute of Technology (TU Berlin), Germany

Toulouse 4R1 Toulouse 4R1

Fresh perspectives on fresh waters:responses of ecosystem processes to global change

  

Prof. Mark O. Gessner
Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB) and Department of Ecology Berlin Institute of Technology (TU Berlin), Germany

 

Jeudi 22 novembre à 13h
Salle de conférences du 4R1

 

Environmental changes, many of them man-made, proceed at unprecedented rates at spatial scales ranging from local to global. What are the consequences for ecosystem processes? I will address this question by assessing impacts of three factors of global change on primary production and organic matter decomposition as the two most fundamental processes in the biosphere. Specifically, I will present results from field experiments exploring how warming, sustained nutrient enrichment, and physical disturbance by extreme storms may affect organic matter decomposition and ecosystem metabolism in lakes and streams. While the mechanisms underlying some of the observed impacts appear to be straightforward, others are unexpected, underscoring the need for manipulative field experiments that capture the complexity of natural ecosystems to forecast consequences of environmental change on inland waters.

Afficher le pied de page