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Phytoplankton composition in a neritic area of the Balearic Sea (Western Mediterranean)

Published online by Cambridge University Press:  02 September 2015

J. Valencia-Vila*
Affiliation:
Instituto Español de Oceanografía, Muelle de Poniente s/n. 07015, Palma de Mallorca, Spain
M.L. Fernández De Puelles
Affiliation:
Instituto Español de Oceanografía, Muelle de Poniente s/n. 07015, Palma de Mallorca, Spain
J. Jansá
Affiliation:
Instituto Español de Oceanografía, Muelle de Poniente s/n. 07015, Palma de Mallorca, Spain
M. Varela
Affiliation:
Instituto Español de Oceanografía, Paseo Alcalde Vázquez, 10. 15001, A Coruña, Spain
*
Correspondence should be addressed to:J. Valencia-Vila, Instituto Español de Oceanografía, Paseo Alcalde Vázquez, 10. 15001, A Coruña, Spain email: joaquin.valencia@co.ieo.es

Abstract

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 μg L−l and 352 cells mL−1, 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 L−1) 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 by nanoplanktonic flagellated forms. The Winter Mixing period was dominated by different groups of nanoflagellates, including coccolithophores, undetermined flagellates and dinoflagellates. However, in the most oligotrophic conditions (from April until November) dinoflagellates were clearly dominant, except in the DCM in summer where diatoms prevailed.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 2015 

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Footnotes

3

Present address: Instituto Español de Oceanografía, Paseo Alcalde Vázquez, 10. 15001, A Coruña, Spain

References

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