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首页> 外文期刊>Estuarine Coastal and Shelf Science >Macroalgal assemblages of disturbed coastal detritic bottoms subject to invasive species
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Macroalgal assemblages of disturbed coastal detritic bottoms subject to invasive species

机译：受侵入物种影响的沿海碎屑海底大型藻类组合

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摘要

Characteristic flora and fauna that are highly sensitive to disturbances colonize coastal detritic bottoms in the Mediterranean Sea. In the present study, a comparison of the assemblage composition and colonization by invasive macroalgae was made between two coastal detritic macrophyte assemblages, one dominated by rhodoliths (free-living non-geniculate Corallinales) and the other dominated by fleshy algae, in an area that has been exposed to important levels of anthropogenic disturbance, mainly pollution (including changed sedimentation regimes) in the recent past (bay of Marseilles, France). In comparison with less strongly impacted Mediterranean regions, the macrophyte assemblages in the bay of Marseilles were characteristic in terms of species identity and richness of coastal detritic macrophyte assemblages. However, extremely Iow species abundance (cover) was observed. As far as invasive species were concerned, Caulerpa racemosa var. cylindracea was only abundant in the rhodolith assemblage whereas the two invasive Rhodophyta Asparagopsis armata and Womersleyella setacea were mainly found in the fleshy algae assemblage. The seasonality observed in the Rhodolith assemblage seemed to be related to the development of C. racemosa var. cylindracea and did not follow the typical pattern of other Mediterranean assemblages. This study represents the first study of coastal detritic assemblages invaded by C. racemosa var. cylindracea.
机译：对干扰高度敏感的特色动植物群遍布地中海沿岸的海底藻类底部。在本研究中，在一个区域内比较了两种沿海有害大型植物组合，其中一种以菱纹石为主（自由生活的非膝状Corallinales），另一种以肉质藻类为主，对侵入性大型藻类的组成组成和定殖进行了比较。在最近一段时间（法国马赛湾），人为干扰已达到重要水平，主要是污染（包括改变的沉积方式）。与受影响较小的地中海地区相比，马赛湾的大型植物群落在物种识别和沿海特有大型植物群落丰富性方​​面具有特征。但是，观察到极低的物种丰富度（覆盖）。就入侵物种而言，Caulerpa racemosa var。圆柱状藻类仅在多纹藻类组合中丰富，而两种侵入性红藻门冬草和Womersleyella setacea主要在肉质藻类组合中发现。在Rhodolith组合中观察到的季节性似乎与C. racemosa var的发展有关。 cylindracea并没有遵循其他地中海组合的典型模式。这项研究代表了由C. racemosa var入侵的沿海有害组合的首次研究。圆柱状。

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