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Title

Patterns of microphytoplankton biomass and diversity in the southern Alboran Sea

AuthorsIdmoussi, Hajar; Somoue, Laila; Peters, Francesc CSIC ORCID ; Demarcq, Hervé; Laabir, Mohamed; Estrada, Marta CSIC ORCID ; Arin, Laura CSIC ORCID ; Makaoui, Ahmed; Ettahiri, Omar; Baibai, Tarik; Charif, Said; Hilmi, Karim; Errhif, Ahmed
KeywordsMicrophytoplankton
Southern Alboran Sea
Diversity
Biomass
Coastal and offshore waters
Issue DateFeb-2022
PublisherHellenic Centre for Marine Research
CitationMediterranean Marine Science 23(1): 103-114 (2022)
AbstractThe southern Alboran Sea is a highly dynamic region in the Mediterranean. However, there is few data on microphytoplankton which is, an important component of the marine ecosystem. We, therefore, collected microphytoplankton samples and related the biomass and diversity patterns to ambient variability, considering cross-shore and longitudinal gradients. There was a general eastward decrease in both species richness and biomass, with Cape Three Forks as a transitional point. Diversity increased in coastal areas and decreased with depth. High chlorophyll-a concentrations corresponded to low temperature and low-salinity waters, indicating the Atlantic origin. Microphytoplankton biomass was low in comparison with total chlorophyll, suggesting a dominance of nano- and picophytoplankton. Biomass values increased in the stretch between Cape Three Forks and Al Hoceima Bay, an area highly influenced by upwelled water originating from the northern Alboran Sea. We suggest that the Western Alboran Gyre enhances the development of dinoflagellates while local upwelling enhances the development of diatoms. A statistical relationship was found between microphytoplankton biomass and diversity, especially when diversity was estimated as species richness. These results are crucial for understanding microphytoplankton dynamics and trends in an area that is undergoing climate-derived changes and biodiversity losses
Description12 pages, 9 figures, 2 tables, supplementary data https://doi.org/10.12681/mms.27555
Publisher version (URL)https://doi.org/10.12681/mms.27555
URIhttp://hdl.handle.net/10261/263900
DOI10.12681/mms.27555
ISSN1108-393X
E-ISSN1791-6763
Appears in Collections:(ICM) Artículos




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