Abundance, biomass, production, grazing, and biometric measurements of prokaryotes, nanoflagellates, ciliates, and dinoflagellates in three areas close to the Antarctic Peninsula in spring and summer 1995/96 ...

• Main Author: Vaqué, Dolors
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2008
• Subjects: CTD/Rosette; Fruela95; Fruela96; Hespérides; Antarc*; Antarctic; Antarctic Peninsula; Bellingshausen Sea; Bransfield Strait
• Online Access: https://dx.doi.org/10.1594/pangaea.696287; https://doi.pangaea.de/10.1594/PANGAEA.696287

Two cruises were carried out during the Austral spring-summer (November 1995 - January 1996: FRUELA 95, and January - February 1996: FRUELA 96), sampling in Bellingshausen Sea, western Bransfield Strait and Gerlache Strait. We investigated whether there were any spatial (among locations) or temporal (between cruises) differences in abundance and biomass of microbial heterotrophic and autotrophic assemblages. Changes in the concentration of chlorophyll a, prokaryotes, heterotrophic and phototrophic nanoflagellates abundance and biomass were followed in the above mentioned locations close to the Antarctic Peninsula. Parallel to these measurements we selected seven stations to determine grazing rates on prokaryotes by protists at a depth coincident with the depth of maximum chlorophyll a concentration. Measuring the disappearance of fluorescent minicells over 48 h assessed grazing by the protist community. From prokaryotes grazing rates, we estimated how much prokaryotic carbon was channeled to higher trophic ... : Supplement to: Vaqué, Dolors; Guixa-Boixereu, Nuria; Gasol, Josep M; Pedrós-Alió, Carlos (2002): Distribution of microbial biomass and importance of protists in regulating prokaryotic assemblages in three areas close to the Antarctic Peninsula in spring and summer 1995/96. Deep Sea Research Part II: Topical Studies in Oceanography, 49(4-5), 847-867 ...