Sorbonne Université, CNRS, Adaptation et Diversité en Milieu Marin AD2M UMR 7144, Station Biologique de Roscoff, Place Georges Teissier CS90074, F-29688 Roscoff, France.
Sorbonne Université, CNRS, Adaptation et Diversité en Milieu Marin AD2M UMR 7144, Station Biologique de Roscoff, Place Georges Teissier CS90074, F-29688 Roscoff, France.
Mar Pollut Bull. 2018 Aug;133:96-106. doi: 10.1016/j.marpolbul.2018.05.001. Epub 2018 May 18.
Urban structures like marinas are dominant features of our coasts, often hotspots for invasive species. The processes that govern the distribution of invasive species within and between marinas are not well understood. We therefore investigated the impacts of local-scale variability within and between marinas, analysing fouling communities at two zones (inner and outer) within three close marinas in accordance with pollutants recorded in the water and sediment. Communities varied between zones, however no significant differences in abundances of invasive species was recorded. The inner zones contained higher levels of copper and other pollutants and were correlated with lower biodiversity and abundances of many species in comparison to the outer zones. Only the native Ascidiella aspersa was found in greater abundances in the inner zones. This local-scale variability and how it impacts biodiversity is important for consideration for coastal managers in mitigating the build-up of pollutants and spread of invasive species.
城市结构如码头是我们海岸的主要特征，往往是入侵物种的热点。然而，对于入侵物种在码头内和码头之间的分布过程还没有很好的理解。因此，我们调查了码头内和码头之间的局部尺度变异性的影响，根据水中和沉积物中记录的污染物，对三个相邻码头的两个区域（内部和外部）的污损群落进行了分析。群落之间存在区域差异，但没有记录到入侵物种丰度的显著差异。内部区域含有更高水平的铜和其他污染物，与外部区域相比，其生物多样性和许多物种的丰度较低。只有本地的 Ascidiella aspersa 在内部区域的丰度更高。这种局部尺度的变异性以及它如何影响生物多样性，对于沿海管理者在减轻污染物的积累和入侵物种的传播方面是重要的考虑因素。
