26.02.2018 – ICBM-Meldung

ASLO Summer Meeting 2018

ASLO Summer Meeting 2018

Special Session SS59: Biodiversity - Ecosystem Functioning Under Stochastic Environmental Forcing

Maren Striebel, University of Oldenburg (striebel@limnology.eu)
Alexander Wacker, University Potsdam (wackera@uni-potsdam.de)
Dominik Martin-Creuzburg,, University of Constance (dominik.martin-creuzburg@uni-konstanz.de)
Andrea Gall, University of Oldenburg (andrea.gall@uol.de)
Gabriel Singer, IGB Berlin (Gabriel.singer@igb-berlin.de)

Understanding and quantifying the role of diversity in ecosystems is a key topic in ecology and of paramount importance in the face of global change. Climate change-associated precipitation patterns are expected to cause more frequent and more intense extreme events including droughts and floods. Consequently, we expect altered flow regimes in lotic systems, with implications for inputs of organic matter and nutrients into lentic systems. Future food webs from streams to lakes will likely encounter strong environmental signals of increased stochasticity and potentially complex, multivariate nature. Biodiversity may be mediating effects on ecosystem functioning. In our session, we aim to gather studies on how climate-change and specifically hydrology-related environmental forcing (1) affects food webs and ecosystem functions in lotic and lentic systems, and (2) how such effects can be mediated by organismic diversity. A particular focus rests on synchronization effects of environmental signals on spatially separated populations and communities. Here, stochasticity of environmental forcing may interact with biodiversity in shaping final effects for food webs and ecosystem functioning.