Temporal and spatial variation of the molluscan community structure in Oualidia Lagoon, Moroccan Atlantic coast

IF 1.4 4区生物学 Q3 MARINE & FRESHWATER BIOLOGY

African Journal of Marine Science Pub Date : 2021-10-02 DOI:10.2989/1814232X.2021.1987985

F. El Asri, A. Errhif, MN Tamsouri, H. Nhhala, M. Maanan, H. Zidane

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引用次数: 1

Abstract

The molluscan assemblages inhabiting the coastal waters of Oualidia Lagoon, Morocco, were studied during winter and summer of 2013. The taxonomic composition and diversity were determined at 43 sample sites. Thirty-four mollusc taxa were recorded in total, including 12 species of bivalves, 20 species of gastropods, 1 species of polyplacophoran and 1 species of cephalopod. Twenty-six of these species are reported here for the first time in Oualidia Lagoon. The gastropod Peringia ulvae and the bivalve Abra alba were the most abundant taxa in both seasons. The deposit-feeder trophic group was highly dominant in both seasons. A classification analysis revealed the existence of three main clusters from downstream to upstream in both seasons: a marine assemblage, a transition assemblage and a lagoon assemblage. Canonical correspondence analyses indicated that the main environmental variables governing the spatial distribution of the molluscs in winter are salinity, temperature and granulometry, whereas in summer they are salinity and granulometry. This study provides a good baseline for future ecological research.

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摩洛哥大西洋海岸Oualidia泻湖软体动物群落结构的时空变化

2013年冬夏季，对居住在摩洛哥Oualidia泻湖沿海水域的软体动物群落进行了研究。在43个采样点测定了分类组成和多样性。共记录了34个软体动物分类群，包括12种双壳类、20种腹足类、1种多足纲和1种头足类。Oualidia泻湖首次报道了其中26种。在这两个季节中，腹足纲尺骨围带纲和双壳纲白骨亚目是数量最多的类群。在两个季节中，沉积物-食源性营养群都具有高度的优势。分类分析表明，在两个季节，从下游到上游存在三个主要集群：海洋组合、过渡组合和泻湖组合。典型对应分析表明，冬季控制软体动物空间分布的主要环境变量是盐度、温度和粒度，而夏季则是盐度和粒度。这项研究为未来的生态学研究提供了一个良好的基线。

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来源期刊

African Journal of Marine Science 生物-海洋与淡水生物学

CiteScore

2.60

自引率

16.70%

发文量

审稿时长

6-12 weeks

期刊介绍： The African (formerly South African) Journal of Marine Science provides an international forum for the publication of original scientific contributions or critical reviews, involving oceanic, shelf or estuarine waters, inclusive of oceanography, studies of organisms and their habitats, and aquaculture. Papers on the conservation and management of living resources, relevant social science and governance, or new techniques, are all welcomed, as are those that integrate different disciplines. Priority will be given to rigorous, question-driven research, rather than descriptive research. Contributions from African waters, including the Southern Ocean, are particularly encouraged, although not to the exclusion of those from elsewhere that have relevance to the African context. Submissions may take the form of a paper or a short communication. The journal aims to achieve a balanced representation of subject areas but also publishes proceedings of symposia in dedicated issues, as well as guest-edited suites on thematic topics in regular issues.