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首页> 外文期刊>Estuarine Coastal and Shelf Science >Fish farming impact on sediments and macrofauna associated with seagrass meadows in the Mediterranean
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Fish farming impact on sediments and macrofauna associated with seagrass meadows in the Mediterranean

机译：鱼类养殖对地中海海草草甸沉积物和大型动物的影响

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The fish farming impact on sediment and macrofauna associated with Posidonia oceanica meadows has been studied in three coastal areas (Spain, Italy and Greece) of the Mediterranean Sea. The stations were characterized by coarse sediment with a low percentage of silt/clay and oxic conditions. Chlorophyll a and organic carbon were occasionally enhanced in the vicinity of the cages and nitrogen remained almost constant between the stations. Phosphorus consistently showed a decreasing trend towards the reference station. Macrofaunal biomass peaked at an intermediate distance from the fish cages. Diversity indices were quite high at all stations, implying that the specific sites were not under severe stress due to aquaculture. A tenuous clustering of stations with distance from the farm was encountered, which was mainly attributed to abundance shifts rather than presence/absence of typical species. It is suggested that oxic conditions induced by intense currents and supported by coarse sediments at the study sites allow the existence of diversified communities with high abundance and biomass.
机译：在地中海的三个沿海地区（西班牙，意大利和希腊），已经研究了养鱼业对与波西多尼亚海洋草甸相关的沉积物和大型动物的影响。这些测站的特点是沉积物较粗，粉砂/粘土和含氧量低。笼子附近的叶绿素a和有机碳偶尔增强，而站之间的氮几乎保持恒定。磷始终向参考站显示下降趋势。大型动物生物量在距鱼笼的中间距离处达到峰值。所有站点的多样性指数都很高，这表明特定站点并未因水产养殖而承受严重压力。与农场距离较远的站点出现了密集的簇集，这主要归因于数量变化而不是典型物种的存在/缺失。建议在研究地点由强流感应并由粗糙沉积物支持的有氧条件允许存在高丰度和高生物量的多样化群落。

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