Phytoplankton composition in a neritic area of the Balearic Sea (Western Mediterranean)
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AuthorsValencia-Vila, J. (Joaquín); Fernández-de-Puelles, M.L. (María Luz); Jansá, J. (Javier); Varela-Rodríguez, M. (Manuel)
Keywordsphytoplankton, annual cycle, bloom, Balearic Islands, Western Mediterranean
From September 2000 to September 2001 the concentration of chlorophyll a, and the abundance and composition of the phytoplanktonic community was studied in a neritic station of the Mallorca Channel (Western Mediterranean). Sampling was performed approximately every 12 days. Chlorophyll a concentration and phytoplankton abundance reached maxima of 1.79 mg L2l and 352 cells mL21, respectively. It was a relatively productive period, as a result of the high convective mixing in winter and the prevalence of northern waters during most of the cycle. Phytoplankton proliferations (chlorophyll-a concentration .1 mg L21) were detected in January, February, March and June. Those blooms mainly happened under the influence of northern waters, with the exception of the February proliferation, when mixing conditions were found. During bloom conditions it highlights the presence of coccolithophores as proliferation precursors. During no-bloom situations the phytoplankton community was mainly constituted ...