期刊
CONTINENTAL SHELF RESEARCH
卷 143, 期 -, 页码 311-321出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.csr.2017.05.007
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资金
- Croatian Ministry of Science, Education, and Sports [275-0000000-3186]
- Croatian Science Foundation (HRZZ) [IP-2014-09-2945]
The South Adriatic (SA) is an entry point for water masses originating from the Ionian Sea (IS) and a place of dense water formation for the eastern Mediterranean deep circulation cell. Water masses, entering the SA in larger amount during the winter, show decadal variability explained by different circulating regimes (cyclonic and anticyclonic) in the IS, referred to as Bimodal Oscillating System (BiOS). Sampling station was situated in the South Adriatic Pit (SAP) with depth of 1200 m. Micro-and nano-phytoplankton abundances, community structure, chlorophyll a concentrations, physical and chemical properties are presented in the winter and spring months for five consecutive years (2009-2013) during different circulating regimes of BiOS. Vertical convective mixing was regularly observed in winter except in 2011 which had effect on nutrient availability and consequently on biomass of primary producers. Effect of strong vertical mixing in February 2012 resulted with exceptionally high phytoplankton abundance and chlorophyll a concentrations in March of 2012. Strong convective mixing resulted in higher diatom abundances, comparing to winter when mixing did not occur. No such bloom was observed during investigated spring.
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