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首页> 外文期刊>Estuarine Coastal and Shelf Science >Ecological Quality Of Some Tunisian Coast And Lagoon Locations, By Using Benthic Community Parameters And Biotic Indices
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Ecological Quality Of Some Tunisian Coast And Lagoon Locations, By Using Benthic Community Parameters And Biotic Indices

机译：利用底栖生物参数和生物指标评价突尼斯沿海和泻湖所在地的生态质量

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Three Tunisian coastal and lagoon sites, variously affected by human activities, and differing according to their degree of communication with the sea, were studied, The total organic matter content and the granulometry of the sediment were measured and the macro-invertebrates were sampled and identified. Currently due to the lack of an efficient single biotic index for quality assessment, indications from these measurements can contribute to enrich our knowledge of the southern Mediterranean areas. Several biotic indices (AMBI, BENTIX, BOPA, BOPA modified, I2EC, IT1), most of which have been used in the context of the European Water Framework Directive, and some other structural parameters were used. The results show that the Bizerte lagoon, an almost closed area characterized mainly by extreme salinity/ temperature and with a strong fluctuation of nutrients, appears biologically more impoverished. The Dkhila coast, which is more open to the sea, however, appears to be less dominated by the principal species. Biotic indices showed that the most polluted areas included the region exposed to urban inputs of Bizerte, the mouth of Hamdoun wadi and the harbour areas. In these locations, benthic macrofauna is dominated by opportunistic species like Capitella capitata, Scolelepis fuliginosa, Prionospio malmgreni, Polydora sp., Cirratulus cirratus and Cirriformia tentaculata. Other stations, which are farther from the sources of disturbance such as the mouths of the principal Wadis, the south of the Bizerte ship canal and the south of the Tunis bay, appear to be in good ecological condition and hosted a variety of sensitive species, Other stations were classified differently by the biotic indices used mainly because of the lack of a real inter-calibration of the various classification methodologies used by these indices.
机译：研究了三个突尼斯沿海和泻湖地点，这些地点受到人类活动的影响各不相同，并且根据它们与海洋的连通程度而有所不同，测量了沉积物中总有机质含量和粒度，并对大型无脊椎动物进行了采样和鉴定。当前，由于缺乏用于质量评估的有效单一生物指标，这些测量的指示可以有助于丰富我们对地中海南部地区的了解。几种生物指标（AMBI，BENTIX，BOPA，经BOPA修改的I2EC，IT1）已在欧洲水框架指令的背景下使用，并且使用了其他一些结构参数。结果表明，比塞大泻湖是一个几乎封闭的区域，其主要特征是盐度/温度极高，养分含量极高，在生物学上看来更加贫困。然而，向海开放的Dkhila海岸似乎较少受到主要物种的控制。生物指数表明，污染最严重的地区包括暴露于比塞大城市输入，哈姆登河谷和港口地区的地区。在这些地区，底栖大型动物区系以机会物种为主，如Capitella capitata，Scolelepis fuliginosa，Prionospio malmgreni，Polydora sp。，Cirratulus cirratus和Cirriformia tentaculata。其他远离干扰源的站点，例如主要瓦迪斯河口，比塞大船渠的南部和突尼斯湾的南部，似乎处于良好的生态条件，并拥有各种敏感物种，其他台站根据所使用的生物指标进行了不同的分类，这主要是因为这些指标所使用的各种分类方法缺乏真正的相互校准。

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