Enhanced warming and bacterial biomass production as key factors for coastal hypoxia in the southwestern Baltic Sea.

ABSTRACT: Coastal ecosystems are affected by a multitude of anthropogenic stressors. As the Baltic Sea ecosystems rank among the most altered marine ecosystems worldwide, they represent ideal model regions to study ecosystem responses to anthropogenic pressures. Our statistical analysis of data including dissolved organic carbon and nitrogen, as well as bacterial abundance and -biomass production from the time-series station Boknis Eck in the southwestern Baltic Sea reveals that bacterial biomass production intensifies towards summer following the phytoplankton spring bloom. Moreover, warming, especially very high temperatures in summer, enhances stratification and bacterial biomass production despite long-term reduction in nutrient input. A strong decrease in oxygen in the bottom layer is possibly

SUBMITTER: Hepach H 

PROVIDER: S-EPMC11603197 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature