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Ultraphytoplankton basin-scale distribution in the eastern Mediterranean Sea in winter: link to hydrodynamism and nutrients
The basin-scale distribution of ultraphytoplankton (
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| Published in: | Biogeosciences 2010-01, Vol.7 (7), p.2227-2244 |
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| Main Authors: | , , , , |
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| Language: | English |
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| cites | cdi_FETCH-LOGICAL-c438t-689e18219ed0bee94b70b8446e8d3728d94a9c117c015025f1a5d12cd131e42c3 |
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| container_issue | 7 |
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| container_title | Biogeosciences |
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| creator | Denis, M Thyssen, M Martin, V Manca, B Vidussi, F |
| description | The basin-scale distribution of ultraphytoplankton ( |
| doi_str_mv | 10.5194/bg-7-2227-2010 |
| format | article |
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Four clusters were resolved by flow cytometry on the basis of their optical properties and identified as Synechococcus, Prochlorococcus, pico- (<3 μm) and nanoeukaryotes (3–10 μm). Synechococcus was the most abundant population (maximum abundance of about 37 000 cells cm−3) and contributed up to 67.7% to the overall ultraphytoplanktonic carbon biomass, whereas the contribution of Prochlorococcus never exceeded 6.5%. The maximum integrated carbon biomass was 1763, 453, 58 and 571 mg C m−2 for nanoeukaryotes, picoeukaryotes, Prochlorococcus and Synechococcus respectively. Water mass properties were analyzed on the basis of temperature and salinity distributions in order to account for the general circulation and locate the main hydrodynamic structures (fronts, gyres, transition between western and eastern basins). The effect of the main hydrodynamic structures and nutrients on the ultraphytoplankton distribution was investigated. No positive correlation between nutrients and phytoplankton could be established when considering large scales. However, below 50 m depth, nutrient ratios between particular stations were correlated to corresponding density ratios. In contrast, significant relationships were found between Synechococcus abundance and density, resulting from the impact of a gyre in southern Adriatic basin and a thermohaline front in the Ionian basin. 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No positive correlation between nutrients and phytoplankton could be established when considering large scales. However, below 50 m depth, nutrient ratios between particular stations were correlated to corresponding density ratios. In contrast, significant relationships were found between Synechococcus abundance and density, resulting from the impact of a gyre in southern Adriatic basin and a thermohaline front in the Ionian basin. A significant relationship was also found between picoeukaryotes and salinity in the comparison of western and eastern Mediterranean Sea.</abstract><cop>Katlenburg-Lindau</cop><pub>Copernicus GmbH</pub><doi>10.5194/bg-7-2227-2010</doi><tpages>18</tpages><orcidid>https://orcid.org/0000-0003-2007-9003</orcidid><orcidid>https://orcid.org/0000-0001-9517-1782</orcidid><orcidid>https://orcid.org/0000-0002-9011-3070</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1726-4189 |
| ispartof | Biogeosciences, 2010-01, Vol.7 (7), p.2227-2244 |
| issn | 1726-4189 1726-4170 1726-4189 |
| language | eng |
| recordid | cdi_doaj_primary_oai_doaj_org_article_e4af325256a044e182c00e500f741b58 |
| source | DOAJ Directory of Open Access Journals |
| subjects | Earth Sciences Oceanography Prochlorococcus Sciences of the Universe Synechococcus |
| title | Ultraphytoplankton basin-scale distribution in the eastern Mediterranean Sea in winter: link to hydrodynamism and nutrients |
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