10.18453/rosdok_id00001803 Bergen, Benjamin Benjamin Bergen http://d-nb.info/gnd/1116434059 Universität Rostock 2016 570 Life science 2016 en http://purl.uni-rostock.de/rosdok/id00001803 urn:nbn:de:gbv:28-diss2016-0117-7 In the scope of the present thesis, next generation sequencing, assessment of bacterial bulk parameters and interdisciplinary approaches were used in laboratory experiments and field studies to add to current knowledge on the impact of important environmental factors on bacterial communities. The results highlight the enormous overall impact of environmental conditions on bacterial community composition and activity. They also provide the first tentative identifications of key taxa likely to be affected by changes in those conditions.