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Título

Nutrient depletion and particulate matter near the iceedge in the Weddell Sea

AutorPérez, Fiz F. ; Figueiras, F. G. ; Ríos, Aida F.
Palabras claveIce-edge
Nutrient depletion
Redfield ratios
Particulate matter
Primary production
Fecha de publicaciónsep-1994
EditorInter Research
CitaciónMarine Ecology Progress Series 112: 143-153 (1994)
ResumenThe region between Elephant Island the South Orkney Islands (53.5º S, 46.5º W) was occupied by Winter Weddell Sea water and a thick layer of summer and surface modified Weddell Water. High correlations between nutrients (nitrate, total inorganic carbon, silicate) and oxygen with salinity were found in the upper 150m near the ice-edge. Nutrient depletion was calculated and correlated with the melting ice processes. When 1 m of ice melts, the average amount of total carbonate and nutrients removed is equivalenyt to a production of 33 g C m(-2) yr(-1). Increase of oxygen were detected with high rates of nutrient and carbon depletion. However, significant oxygen losses in the melting water body were estimated from the conservative `NO´parameter. The amount of nutrients removed during pack-ice melting was about 3 times higher than that taken up in the water column. Analyses of particulate material in the ice samples showed similar C:N ratios to those estimated by the decrease of nutrients in the water column.
Descripción11 pages, 6 figures, 4 tables.
Versión del editorhttp://www.int-res.com/abstracts/meps/v112/
URIhttp://hdl.handle.net/10261/26011
ISSN0171-8630
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