Summer Phytoplankton Densities 1992-2001
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Phytoplankton were collected over four austral summers (1991-92 through
1994-95) to examine seasonal and annual fluctuation in species composition and biovolume in
Lakes Fryxell, Hoare, West Lake Bonney, and East Lake Bonney. All of these lakes are
perennially ice-covered lakes located in the Dry Valleys of South Victoria Land, Antarctica.
The phytoplankton consisted primarily of cryptophyte and chlorophyte flagellates, and
filamentous cyanobacteria. Some common taxa were vertically stratified (Oscillatoria
limnetica, Phormidium angustissimum, Pyramimonas sp., Oscillatoria sp.), while others showed
no distinct vertical stratification (Chlamydomonas subcaudata, Cryptomonas sp.). The
stratification of the phytoplankton reflects the gradients of nutrients and light, and the
stability of the water column.
创建时间：
2013-06-14
