In the context of global change and loss of biotic diversity, understanding relationships between diversity and ecosystem functioning has become mandatory. Therefore, it is necessary to investigate underlying mechanisms that generate and maintain diversity patterns across spatial scales. Theresa Lumpi wrote her master’s thesis about this topic and finished successfully in September.

In this study we examined the effects of ecological connectivity along with important environmental parameters on freshwater microbial communities. Experimental communities were established in 40 mesocosms (300 L) inoculated with water from three lakes in Lower Austria.