Patterns of microphytoplankton biomass and diversity in the southern Alboran Sea


Δημοσιευμένα: Dec 14, 2021
Εκδόσεις:
2021-12-14 (1)
HAJAR IDMOUSSI
https://orcid.org/0000-0002-8976-3877
LAILA SOMOUE
https://orcid.org/0000-0001-5769-9498
FRANCESC PETERS
https://orcid.org/0000-0001-9405-4306
HERVÉ DEMARCQ
MOHAMED LAABIR
MARTA ESTRADA
LAURA ARIN
AHMED MAKAOUI
OMAR ETTAHIRI
TARIK BAIBAI
SAID CHARIB
KARIM HILMI
AHMED ERRHIF
Περίληψη

The 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.

Λεπτομέρειες άρθρου
  • Ενότητα
  • Research Article
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Βιογραφικά Συγγραφέων
HAJAR IDMOUSSI, Université Hassan II Faculté des sciences Ain Chock Institut National de Recherche Halieutique
Laboratoire Santé et Envirronement
LAILA SOMOUE, Institut National de Recherche Halieutique

Laboratoire Ecologie du Plancton Marin
Département Océanographie

FRANCESC PETERS, Institut de Ciències del Mar (CSIC)
Department of Marine Biology and Oceanography
HERVÉ DEMARCQ, MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Sète
Montpellier University
MARTA ESTRADA, Institut de Ciències del Mar (CSIC)
Department of Marine Biology and Oceanography
LAURA ARIN, Institut de Ciències del Mar (CSIC)
Department of Marine Biology and Oceanography
AHMED MAKAOUI, Institut National de Recherche Halieutique
Département Océanographie
OMAR ETTAHIRI, Institut National de Recherche Halieutique
Département Océanographie
TARIK BAIBAI, Institut National de Recherche Halieutique

Laboratoire Ecologie du Plancton Marin

Département Océanographie

SAID CHARIB, Institut National de Recherche Halieutique

Laboratoire Ecologie du Plancton Marin

Département Océanographie

KARIM HILMI, Institut National de Recherche Halieutique
 
AHMED ERRHIF, Université Hassan II Faculté des sciences Ain Chock
Laboratoire Santé et Environnement
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