Zusammenfassung ................................................. 6
Chapter 1:
Introduction .................................................... 7
Problems and tasks of the publications .......................... 9
Main results ................................................... 11
Discussion ..................................................... 13
Chapter 2:
Automated Nanocosm test system to assess the effects of
stressors on two interacting populations ....................... 19
Chapter 3:
Competition increases toxicant sensitivity and delays the
recovery of two interacting populations ........................ 39
Chapter 4:
Short-term disturbance of a grazer has long-term effects on
bacterial communities - Relevance of trophic interactions for
recovery from pesticide effects ................................ 58
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