1 - Instituto de Biologia da UFRJ
1 - Instituto de Biologia da UFRJ
1 - Instituto de Biologia da UFRJ
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2<br />
PLANKTON STRUCTURE OF SHALLOW COASTAL<br />
ZONE AT ADMIRALTY BAY, KING GEORGE ISLAND,<br />
WEST ANTARCTIC PENINSULA (WAP) DURING EARLY<br />
SUMMER/2010: PICO, ULTRA AND MICROPLANKTON<br />
AND CHLOROPHYLL BIOMASS<br />
José Juan Barrera-Alba 1,* , Mariana Vanzan, Márcio Murilo Barboza Tenório 1 , Denise Rivera Tenenbaum 1,**<br />
1<br />
Laboratório <strong>de</strong> Fitoplâncton Marinho, <strong>Instituto</strong> <strong>de</strong> <strong>Biologia</strong>, Universi<strong>da</strong><strong>de</strong> Fe<strong>de</strong>ral do Rio <strong>de</strong> Janeiro – <strong>UFRJ</strong>, Av. Carlos Chagas Filho,<br />
373, Edif. CCS, Bloco A, Sala A61, Ilha do Fundão, Ci<strong>da</strong><strong>de</strong> Universitária, CEP 20530-310, Rio <strong>de</strong> Janeiro, RJ, Brazil<br />
*e-mail: juanalba@biologia.ufrj.br; **<strong>de</strong>niser@biologia.ufrj.br<br />
Abstract: The phytoplankton composition and biomass are being monitored in Admiralty Bay, Antarctic Peninsula since 2002 to<br />
<strong>de</strong>tect possible interannual changes on a long-term monitoring perspective. In this report, we present the results of the December<br />
2010 survey regarding the phytoplankton size-structure and biomass. Microplankton <strong>de</strong>nsities were higher than those observed<br />
during the survey 2009/2010, and a dominance of diatoms, especially the centric Thalassiosira spp, over dinoflagellates was<br />
registered. Pico and ultraplankton <strong>de</strong>nsities (~10 6 cells L –1 ) were similar to those registered in previous studies, and results showed<br />
that phytoplankton were dominated in <strong>de</strong>nsity by cells