L'upwelling de la côte atlantique du Maroc entre 1994 et 1998

Makaoui, Ahmed; Orbi, A.; Hilmi, Karim; Zizah, Soukaina; Larissi, Jamila; Talbi, Mohamed

doi:10.1016/j.crte.2005.08.013

Cited by 52 publications

(40 citation statements)

References 4 publications

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“…In liver tissue, metals concentrations (except Mn and Cu) show a decrease between summer and autumn seasons for sardine, this can probably be attributed to the upwelling intensity, which is greater during the summer season and lower during the autumn season (Makaoui et al 2005). It is well known that upwelling phenomena contribute to metals bioavailability in environment.…”

Section: Seasonal Concentration Patternsmentioning

confidence: 99%

Hemolymph osmotic, ionic status, and branchial Na+/K+-ATPase activity under varying environmental conditions in the intertidal grapsid crab, Gaetice depressusd

et al. 2012

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In the current study, ten elements contents (Fe, Zn, Mn, Cu, Cr, Co, Ni, Cd, Pb and Hg) have been measured in muscle and liver of four pelagic fish species (Engraulis encrasicolus, Sardina pilchardus, Scomber japonicus and Trachurus trachurus) from the north-west African coast (South Atlantic Moroccan coast), collected during summer and autumn seasons (July and December 2013, respectively). Significant differences in metal contents were found between the different species (p \ 0.05). Metals levels were also much higher in liver than those recorded in muscle tissues. The concentrations of Fe, Zn, Cd, Co, Cu and Pb were significantly higher in mackerel liver (p \ 0.05).While, in muscle, anchovy presents a higher content of Mn, Cu, Cr, Ni and Pb. A high level of cadmium was recorded in liver of the different species which can be attributed to an anthropogenic source (phosphate industry) and to natural sources (upwelling activities). The main concentration of toxic elements (Cd, Pb and Hg) recorded in the four edible muscles of pelagic fish species, under study, were below the established values by the European Commission Regulations and show that their effect on the consumers health can be considered as negligible.

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Section: Seasonal Concentration Patternsmentioning

confidence: 99%

Hemolymph osmotic, ionic status, and branchial Na+/K+-ATPase activity under varying environmental conditions in the intertidal grapsid crab, Gaetice depressusd

et al. 2012

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“…The parameters (a and b) are very sensitive to monthly sample numbers and the size composition of each species (Fréon, 1988). This variability of the length-weight relationship is linked to that of trophic conditions (Furnestin, 1957;Somoue, 2004) and hydrological condition (Makaoui, 2005). It should be noted that the theoretical maximum size (L∞) depends on the size of the sampled individuals.…”

Section:  Lengths Structure Of Landings:-mentioning

confidence: 99%

Artisanal fishery of small pelagic: diagnosis and prospects Case of Moroccan Atlantic center.

Oumarous¹,

Lakhnigue²,

Mhamed³

et al. 2016

IJAR

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“…Zooplankton abundances and community structure in coastal ecosystems are closely related to environmental changes in temperature, salinity, chlorophyll, nutrients, turbulence and particularly upwelling activity (Makaoui et al, 2005). Therefore, in order to establish distribution patterns of zooplankton in pelagic ecosystem, it is necessary to study and understand the circulation and distribution of water masses (Boltovskoy, 1999 Barton, 1998, Susek, 2005 and the productivity therein is highest in boreal winter (winter) and spring.…”

Section: Study Area: Hydrography and Upwellingmentioning

confidence: 99%

Diversity and Copepods’composition off Moroccan Atlantic Coast (Northwest Africa): A Review

Arraj

Tazi

Somoue

et al. 2017

ESJ

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This overview sums up the results of main investigations and knowledge about zooplankton off Moroccan Atlantic coast. Copepods diversity, spatial distribution, seasonal variability and hydrology off Moroccan Atlantic coast are given. A compilation of taxonomic list of copepods' species found therein was established from published studies, they accounted for 210. Diversity and richness varied strongly between seasons, an onshore offshore gradient was observed as well. Species composition differed from northern to southern Moroccan Atlantic coast although most dominant species off Morocco's coasts were Calanus helgolandicus, Paracalanus parvus, Acartia clausi and Corycaeus typicus. In addition, the largest number of species was found in upwelling regions. A synthesis study was established in order to spatial distribution of copepods along Moroccan Atlantic coast. The Factorial Correspondence Analysis of copepod species characterizing the most important sectors has shown different patterns of copepods distribution across Moroccan Atlantic coast; three main areas were clearly segregated according to their taxonomic composition (Northern, Central and Southern Atlantic).

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L'upwelling de la côte atlantique du Maroc entre 1994 et 1998

Cited by 52 publications

References 4 publications

Hemolymph osmotic, ionic status, and branchial Na+/K+-ATPase activity under varying environmental conditions in the intertidal grapsid crab, Gaetice depressusd

Hemolymph osmotic, ionic status, and branchial Na+/K+-ATPase activity under varying environmental conditions in the intertidal grapsid crab, Gaetice depressusd

Artisanal fishery of small pelagic: diagnosis and prospects Case of Moroccan Atlantic center.

Diversity and Copepods’composition off Moroccan Atlantic Coast (Northwest Africa): A Review

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