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Changes in phytoplankton pigment content, in vivo fluorescence as well as in abundance and cell characteristics of phyto- and bacterioplankton were investigated on a field-collected microplankton assemblage from Ushuaia Bay (Southern Argentina). Effects of different experimental treatments were examined: natural and enhanced ultraviolet-B radiation (UVBR: 280–320 nm) exposures, and water soluble fraction...
A microcosm approach was designed to study the combined effects of tributyltin (TBT) from antifouling paints and ultraviolet-B radiation (UVBR: 280–320nm), on a natural planktonic assemblage (<150μm) isolated from the St. Lawrence Estuary at the end of the springtime. Microcosms (9l, cylindrical Teflon ® bags, 75cm height×25cm width) were immersed in the water column of mesocosms (1800l,...
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