Multiple human pressures in coastal habitats: variation of meiofaunal assemblages associated with sewage discharge in a post-industrial area
Multiple human pressures in coastal habitats: variation of meiofaunal assemblages associated with sewage discharge in a post-industrial area
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DOI：
10.1016/j.scitotenv.2018.11.121
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发表时间：
2019-03-10
影响因子：
9.8
通讯作者：
Danovaro, R.
中科院分区：
文献类型：
--
作者：
Bertocci, I.;Dell'Anno, A.;Danovaro, R.
海洋生态系统在全球范围内受到人类活动的威胁，但某些地区，例如受废弃工业工厂影响的地区，表现出急性和慢性影响的重叠，这决定了其健康状况的大幅恶化。在这里，我们报告的结果进行了研究的沿海下水道，排放他们的负载在高度污染的地区巴尼奥里-科罗廖（第勒尼安海，西地中海）。取样区的特点是重工业活动（一家使用煤、铁和石灰石的钢铁厂）始于1905年，1990年停止，造成广泛的重金属和碳氢化合物污染。在考虑到潜在的影响，沉积物粒度范围，通过其列入协变量的分析，我们测试了潜在的影响，污水排放的总丰度和多变量结构的小型底栖动物组合，以及丰富的单一类群。有机物进行了分析，总植物色素和生物聚合物碳浓度。线虫，桡足类（包括他们的无节幼体），缓步动物是最丰富的小型底栖动物类群在所有网站，但线虫没有表现出一致的模式相对于污水排放口。然而，位于历史上污染最严重的地区的下水道显示出最低丰度的所有类群，包括线虫，而桡足类相对较少丰富的两个最南端的下水道。比较污水渠的南北位置，在南面部分观察到较高的小型底栖动物丰度，可能是当地环流的结果。这项研究的结果表明，小型底栖生物一般适应多种压力（污水排放，叠加慢性工业污染）和其他当地进程的可能调制。它们还为今后的恢复措施提供了相关的基线信息，这些措施将视需要考虑到目标生物的空间变异。(C)2018 Elsevier B. V.版权所有。
Marine ecosystems are globally threatened by human activities, but some areas, such as those affected by abandoned industrial plants, show an overlap of acute and chronic impacts, which determine a considerable deterioration of their health status. Here we report the results of a research conducted on coastal sewers that discharge their loads in the highly contaminated area of Bagnoli-Coroglio (Tyrrhenian Sea, Western Mediterranean). The sampling area is characterized by heavy industrial activities (a steel plant using coal, iron and limestone) started in 1905 and ceased in 1990, which left widespread heavy metals and hydrocarbon contamination. After taking into account the potential influence of sediment grain size ranges through their inclusion as covariates in the analysis, we tested the potential impact of sewage discharge on the total abundance and multivariate structure of meiofaunal assemblages, as well as on the abundance of single taxa. The organic matter was analysed in terms of total phytopigment and biopolymeric carbon concentrations. Nematoda, Copepoda (including their nauplii), and Tardigrada were the most abundant meiofaunal taxa at all sites, but nematodes did not show a consistent pattern relative to the sewage outfalls. However, the sewer located in the historically most contaminated area showed a minimal abundance of all taxa, including nematodes, while copepods were relatively less abundant at the two southernmost sewers. Comparing the north vs. south site of the sewers, higher meiofaunal abundances were observed in the southward part, likely as a result of the local circulation. The results of this study indicate the general adaptation of meiofauna to multiple stressors (sewage discharge, superimposed to chronic industrial contamination) and its likely modulation by other local processes. They also provide relevant baseline information for future restoration interventions that would take into account the spatial variation of target organisms as needed. (C) 2018 Elsevier B.V. All rights reserved.