2024-03-29T04:34:27Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1487362018-08-10T07:46:46Zcom_10261_88com_10261_8col_10261_341
http://hdl.handle.net/10261/148736
10.1017/S0025315417000388
328066
Polychaete diversity and assemblage structure in the Oualidia Lagoon, Moroccan Atlantic coast
Cambridge University Press
2018
artículo
El Asri, Fatima
Zidane, Hakima
Errhif, Ahmed
Tamsouri, Mohamed-Naoufal
Maanan, Mohamed
Idrissi, Mohamed Malouli
Martin, Daniel
rp05381
Morocco
Atlantic coast
Polychaete diversity
Seasonal variability
Assemblage structure
Oualidia lagoon
2018
Este artículo contiene 10 páginas, 6 figuras, 2 tablas.
The polychaete assemblages inhabiting the coastal waters of the Oualidia lagoon were studied during winter 2013 and
summer 2013. Taxonomic composition and diversity were determined at 43 sample sites. Among the 13 species of polychaetes
recorded, 10 were newly reported for Oualidia lagoon. Hediste diversicolor and Capitella sp. were the most abundant taxa in
both seasons. Temperature and salinity were higher, and chl-a and OM were lower, in summer than in winter. The structure
of the polychaete assemblages was characterized by forming three main clusters, either based on sampling stations or on polychaete
species. These clusters were organized according to a downstream gradient, with the stations having fine sediments and
a H. diversicolor assemblage in the inner lagoon being replaced by stations with medium grain-sized sediment and a Capitella
sp. assemblage in the mid-lagoon, which were in turn replaced by stations having sandy sediments and assemblages dominated
by Glycera alba (winter) and P. africana (summer) in the areas closer to the lagoon inlets. The shift was, in fact,
from a classical, brackish, lacunar assemblage to two different, temporal aspects of a marine assemblage (close to the
inlets), with a transition assemblage in between. This corresponded with a typically paralic spatial structure whose main
descriptors responded to a confinement gradient. Despite the absence of a river, the organization of the polychaete assemblages
closely resembled that of an estuarine system, with the tidal regime playing a major driving role.
Journal of the Marine Biological Association of the United Kingdom
2018
98
1337
1346