Late Holocene morphodynamics in the littoral zone of the Iwik Peninsula area (Banc d'Arguin — Mauritania)

Barusseau, Jean-Paul; Certain, R.; Vernet, Robert; Saliège, Jean-François

doi:10.1016/j.geomorph.2010.05.006

Cited by 12 publications

(2 citation statements)

References 51 publications

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“…Shellmiddens of Senilia can be found all along the coast from northern Mauritania to the coast of Luanda (Angola) (Nicklès & Fischer-Piette 1950, Valdeyron & da Silva Domingos 2012, Lavaud et al 2013, Hardy et al 2016. Many of these shell-middens date back to the late Holocene period (~5000 yr BP) (Barusseau et al 2010, Hardy et al 2016. Although Senilia is no longer part of the diet of the northern coastal communities of West Africa (e.g.…”

Section: Introductionmentioning

confidence: 99%

Growth and population structure of bloody cockles Senilia senilis at Banc d’Arguin and Bijagós with different environmental conditions and harvesting regimes

El-Hacen¹,

Lemrabott²,

Meijer³

et al. 2023

Mar. Ecol. Prog. Ser.

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In addition to density-dependent (i.e. food availability) and independent (i.e. abiotic gradients) forces, size-selective harvests of organisms often induce changes to their life history, demography, and reproduction. Shellfish are increasingly overexploited worldwide, and the effect of size-selective harvest on their populations is unclear. The African bloody cockle Senilia senilis is a dominant bivalve in most West African coastal systems, where it is an important source of protein. Here, we studied its population structure (abundance, biomass, and size) and life history traits (age, annual growth rate, and size for age) under contrasting harvesting conditions at the 2 largest intertidal systems in the region: the Bijagós archipelago in Guinea-Bissau (harvested) and Banc d’Arguin in Mauritania (unexploited). To account for local ecological context, we assessed environmental variables that could also affect the abundance and size of S. senilis at these sites. We found that the S. senilis population at Bijagós is significantly denser and older, with lower standing biomass and smaller-sized shells than the population from Banc d’Arguin. In Bijagós, the annual growth is 3-fold lower, and the size-for-age is half of that at Banc d’Arguin. At both sites, S. senilis densities and sizes were correlated with habitat quality indicators: mangrove and mudflat productivity at Bijagós and seagrass and sediment characteristics at Banc d’Arguin. The smaller-sized mature individuals, denser populations, and lower standing biomass at Bijagós compared to Banc d’Arguin are indications of considerable size-selection pressure at Bijagós.

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Section: Introductionmentioning

confidence: 99%

Growth and population structure of bloody cockles Senilia senilis at Banc d’Arguin and Bijagós with different environmental conditions and harvesting regimes

El-Hacen¹,

Lemrabott²,

Meijer³

et al. 2023

Mar. Ecol. Prog. Ser.

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show abstract

“…The shellmiddens of Senilia can be found all along the coast from northern Mauritania to the coast of Luanda (Angola) (Nicklès & Fischer-Piette 1950, Valdeyron & da Silva Domingos 2012, Lavaud et al 2013, Hardy et al 2016. Many of these shell-middens date back to the late Holocene period (~5000 BP) (Barusseau et al 2010, Hardy et al 2016. Although, nowadays Senilia is no long part of the diet of the northern coastal communities of West Africa (e.g., Mauritania), it is still an important source of protein for local communities in Guinea Bissau (Regalla et al 2013), and to a lesser extent in Senegal (Hardy et al 2016), Sierra Leone (Okera 1976), Ivory Coast (Zabi & Le Loeuff 1994), and Ghana (Keeling et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Fish and fisheries dynamics at Banc d'Arguin, Mauritania: consequences for the intertidal food webs

Lemrabott¹

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Facies patterns of a tropical heterozoan carbonate platform under eutrophic conditions: the Banc d’Arguin, Mauritania

Klicpera

Michel

Westphal

2014

Facies

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Late Holocene morphodynamics in the littoral zone of the Iwik Peninsula area (Banc d'Arguin — Mauritania)

Cited by 12 publications

References 51 publications

Growth and population structure of bloody cockles Senilia senilis at Banc d’Arguin and Bijagós with different environmental conditions and harvesting regimes

Growth and population structure of bloody cockles Senilia senilis at Banc d’Arguin and Bijagós with different environmental conditions and harvesting regimes

Fish and fisheries dynamics at Banc d'Arguin, Mauritania: consequences for the intertidal food webs

Facies patterns of a tropical heterozoan carbonate platform under eutrophic conditions: the Banc d’Arguin, Mauritania

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