Inter-Research > MEPS > v467 > feature  
Marine Ecology Progress Series

via Mailchimp
MEPS - Vol. 467 - Feature article
Epifluorescence microscopy photograph of a ciliate (cf. Strombidium) typically found at Baltic Sea oxic/anoxic interfaces. Scale-bar: 10 µm. Photo: R. Anderson

Anderson R, Winter C, Jürgens K


Protist grazing and viral lysis as prokaryotic mortality factors at Baltic Sea oxic-anoxic interfaces


Interface zones between oxic and anoxic water masses are hot spots of prokaryotic activity, as bacteria and archaea have key roles in the biogeochemical cycling of sulfur, carbon and nitrogen. Anderson and co-workers demonstrate that protist grazing is the principal cause of mortality in prokaryotes in Baltic Sea suboxic zones and at the oxic-anoxic interface, accounting for mortality rates of up to 100% of prokaryotic standing stocks per day. In contrast, neither protist grazing nor viral lysis were found to be strong mortality factors in sulfidic waters; the causes of prokaryote mortality in these zones remain to be clarified.


Inter-Research Science Publisher is pleased to make this Feature Article openly available for viewing by our readers.


Abstract   Back to contents page   Link to full PDF