Department of Zoology, University of Córdoba, Campus Universitario Rabanales, Edif. Darwin, E-14071-Córdoba, Spain.
J Insect Sci. 2011;11:58. doi: 10.1673/031.011.5801.
This study is part of the Follow up Restoration Program of animal communities that colonize the Guadiamar River Basin. In 1998, the area was affected by a release of toxic sludge after the retention walls of the Aznalcóllar Mines (southern Iberian Peninsula) broke. The main objective of this study was to assess the current state of the population of Tenebrionidae, one of the most representative groups of edaphic Coleoptera inhabiting the Guadiamar River Basin. This paper analyses the progress made by the darkling beetle community six years after the disaster occurred and the Restoration Program was implemented. The study is based on faunistic data from systematic sampling carried out for six years to monitor plots distributed across the damaged area. To make an overall assessment of the tenebrionid fauna in relation to adjacent areas qualitative and quantitative ecological indices were applied, and temporal follow up and biogeographical comparisons were also made. The results indicate that, on the whole, tenebrionid fauna was somewhat affected by the Aznalcóllar Mine spill, and that a greater loss of fauna was detected closer to the accident site. The analysis of the temporal population dynamic suggests that the most affected zones are undergoing a process of re-colonization. However, this process varies widely by species and has not yet reached the expected levels of a non-affected river basin in the southern Iberian Peninsula.
这项研究是对殖民瓜迪亚马河流域的动物群落进行后续恢复计划的一部分。1998 年，由于阿纳科拉尔矿区（伊比利亚半岛南部）的挡土墙破裂，有毒污泥泄漏，该地区受到了影响。本研究的主要目的是评估在发生灾难和实施恢复计划六年后，Tenebrionidae 种群的现状。本文分析了灾难发生后六年暗黑甲虫群落的进展情况以及恢复计划的实施情况。该研究基于系统抽样的动物区系数据进行，六年来一直在监测分布在受灾区的样地。为了全面评估与相邻地区有关的 Tenebrionidae 动物群，应用了定性和定量生态指数，并进行了时间跟踪和生物地理比较。结果表明，总的来说，暗黑甲虫动物群受到了阿纳科拉尔矿区泄漏事件的一定影响，并且在离事故地点越近的地方，动物群的损失越大。种群动态的时间分析表明，受影响最严重的区域正在经历重新殖民化的过程。然而，这一过程因物种而异，并且尚未达到伊比利亚半岛南部非受影响河流流域的预期水平。
