Because water flows downhill, streams reflect actions in their watersheds. My research group uses both experimental and epidemiological approaches to identify stressors such as land use, thermal regimes, and chemicals that trigger ecological thresholds causing aquatic biota to fundamentally change composition to alternative states. Aquatic communities can show dramatic responses to even small amounts of land use change, with some taxa disappearing from watersheds entirely. Within the context of global change, up to 50% of aquatic biodiversity may be lost from some watersheds. Threshold values for a given stressor can differ between adjacent physiographic regions, but once degradation occurs our research suggests that ecological condition may be difficult, if not impossible, to restore.
Interviews Head of EBG
Microbial-mineral interactions: Formation of pyrite and implications for biosignature and environmental research
Living on the ice edge: insights into the environmental, climatic, and human history of the Ethiopian highlands
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Deutschland sucht ein Endlager für seine hochradioaktiven Abfälle - Hintergründe, Verfahren, Öffentlichkeitsbeteiligung