IIMYC   23581
INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS
Unidad Ejecutora - UE
artículos
Título:
Microbial plankton configuration in the epipelagic realm from the Beagle Channel to the Burdwood Bank, a Marine Protected Area in Sub-Antarctic waters
Autor/es:
GUINDER, VALERIA A.; BERND KROCK; FERRONATO, CAROLA; MARTÍNEZ, ANA; MALITS, ANDREA; GARZÓN-CARDONA, JOHN
Revista:
PLOS ONE
Editorial:
PUBLIC LIBRARY SCIENCE
Referencias:
Lugar: San Francisco; Año: 2020
ISSN:
1932-6203
Resumen:
Marine microbial plankton hold high structural and functional diversity, however, high resolution data are lacking in a large part of the Global Ocean, such as in subpolarareas of the SW Atlantic. The Burdwood Bank (BB) is a submerged plateau (averagedepth 100 m) that constitutes the westernmost segment of the North Scotia Ridge(54°?55°S; 56°?62°W). The BB hosts rich benthic biodiversity in low chlorophyll watersof the southern Patagonian Shelf, Argentina, declared Namuncurá Marine ProtectedArea (NMPA) in 2013. So far, the pelagic microorganisms above the bank have notbeen described. During austral summer 2016, we assessed the microbial plankton(0.2-200 μm cell size) biomass and their taxonomical and functional diversity along alongitudinal transect (54.2-55.3°S, 58-68°W) from the Beagle Channel (BC) to the BB,characterized by contrasting hydrography. Results displayed a marked zonation in thecomposition and structure of the microbial communities. The biomass of phytoplankton>5 μm was 28 times higher in the BC, attributed mainly to large diatom blooms, than inoceanic waters above the BB, where the small coccolithophore Emiliania huxleyi andflagellates