Drivers of Microbial Carbon Fluxes Variability in Two Oligotrophic Mediterranean Coastal Systems.

ABSTRACT: The carbon fluxes between phytoplankton and heterotrophic bacterioplankton were studied in two coastal oligotrophic sites in the NW Mediterranean. Phytoplankton and bacterial production rates were measured under natural conditions using different methods. In the Bay of Villefranche, the temporal variability revealed net heterotrophy in July-October and net autotrophy in December-March. The spatial variability was studied in the Bay of Palma, showing net autotrophic areas in the west and heterotrophic areas in the east. On average bacterial respiration, represented 62% of the total community respiration. Bacterial growth efficiency (BGE) values were significantly higher in autotrophic conditions than in heterotrophic ones. During autotrophic periods, dissolved primary production (DPP) was e

SUBMITTER: Gonzalez-Benitez N 

PROVIDER: S-EPMC6881365 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature