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首页> 外文期刊>Marine Environmental Research >Ecological status assessment and response of benthic communities to environmental variability: The Valli di Comacchio (Italy) as a study case
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Ecological status assessment and response of benthic communities to environmental variability: The Valli di Comacchio (Italy) as a study case

机译：底栖生物群落的生态状况评估和对环境变化的响应：以意大利瓦利迪科马基奥为例

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摘要

The Valli di Comacchio is one of most representative choked (not influenced by the tidal regime) lagoons in the Mediterranean and Europe. We compared the ecological status (ES) classification (sensu European Water Framework Directive, 2000/60/EC) of the Valli obtained through supporting physicochemical elements and biotic indices. The variability of water parameters was investigated through 1997-2002 at 4 permanent sampling stations. During the six years of investigation, macrobenthic data were collected to identify the response of several biological indices (taxonomic, functional and ecological). ES classification through supporting physicochemical elements resulted in discordant patterns. Nor taxonomic neither functional measures were able to add more information than that given by univariate biodiversity measures. Gaps and bias of the indices used were identified. Due to the absence of well defined environmental gradients, taxonomic and functional measures loose most of their usefulnesses. ES classification through ecological indices (M-AMB1 and BITS) resulted in quite a concordant pattern, although BITS underestimated ES when there was a strong dominance of one opportunist family in the benthic community.
机译：瓦利迪科马基奥山谷是地中海和欧洲最具代表性的（不受潮汐政权影响的）泻湖之一。我们比较了通过支持理化元素和生物指标获得的瓦利的生态状况（ES）分类（欧洲水框架指令，2000/60 / EC）。 1997年至2002年期间，在4个永久性采样站对水参数的变化进行了调查。在调查的六年中，收集了大型底栖动物的数据，以确定几种生物学指标（分类学，功能和生态学）的响应。通过支持理化元素进行的ES分类导致不一致的模式。分类学和功能方面的措施都不能比单变量生物多样性措施提供更多的信息。确定了所使用指标的差距和偏差。由于缺乏明确的环境梯度，因此分类学和功能性措施失去了大多数用途。通过生态指数（M-AMB1和BITS）对ES进行分类导致了一种相当一致的模式，尽管当底栖社区中一个机会主义家庭占主导地位时，BITS低估了ES。

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