Evaluation of European diatom trophic indices
Evaluation of European diatom trophic indices
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DOI：
10.1016/j.ecolind.2010.06.017
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发表时间：
2011-03-01
影响因子：
6.9
通讯作者：
Van de Vijver, Bart
中科院分区：
文献类型：
--
作者：
Besse-Lototskaya, Anna;Verdonschot, Piet F. M.;Van de Vijver, Bart
淡水硅藻被认为是河流和湖泊营养状态的可靠指标。在过去的30年里，已经制定了一些指标指数，并用于评估整个欧洲的营养状况。然而，目前尚不清楚这些指示指数之间的硅藻生态特征是否存在差异。本研究评估了大量已公布的欧洲指数的淡水硅藻营养条件的反应，通过评估的一致性，在使用的类群和他们的营养评分从7个欧洲指标指数。利用星星（Standardisations of River Classifications，STAR）硅藻数据库中的大量欧洲自来水沃茨样本，对营养分类在水质评价中的应用进行了试验。对营养指数内共有类群的分析表明，指数之间存在相当大的差异，例如营养值的得分。有更多的协议内的贫营养和肥大的偏好比中营养范围内的分类群。在此基础上，编制了一个硅藻分类群的列表，这些分类群被一致地用于不同的营养指数。它包括159个“可靠”的分类群，不敏感的区域环境，水型和分类的不确定性。该列表还附有对分类群营养偏好的描述。一些硅藻分类群的营养分数的大偏差可能是由分类的不确定性。应用这些类群进行营养评价是值得怀疑的。359个星星样本的测试集表明，营养指数之间的差异也导致水质评价结果的显着变化。虽然营养指数提供了一个很好的生物监测工具，他们应该谨慎使用，考虑到本文提供的建议。(C)2010爱思唯尔有限公司版权所有。
Freshwater diatoms are considered to be reliable indicators of the trophic status of rivers and lakes. In the past 30 years, a number of indicator indices have been developed and used for the assessment of trophic conditions all over Europe. It is however still not clear whether the ecologic signature of diatoms differs between these indicator indices. The present study assessed a large number of published European indices on the response of freshwater diatoms to trophic conditions by evaluating the consistency in the use of taxa and their trophic score from seven European indicator indices. The STAR (Standardisations of River Classifications) diatom database, a large set of samples from European running waters, was used to test the application of trophic classifications in water quality assessment. The analysis of taxa in common within the trophic indices showed that there are considerable differences between the indices, for example in the score of trophic values. There was more agreement in classification of taxa within the oligotrophic and the hypertrophic preferences than within the mesotrophic range. Based on these results, a list of diatom taxa, that are consistently used in different trophic indices, was composed. It included 159 'reliable' taxa that are not sensitive to regional setting, water type and taxonomic uncertainty. The list was further accompanied by a description of the taxa's trophic preferences. The large deviation in trophic scores for a number of diatom taxa could most probably be explained by taxonomic uncertainties. Application of these taxa for trophic assessment was questionable. The test set of the 359 STAR samples showed that differences between the trophic indices also lead to a significant variation in the water quality assessment results. Although trophic indices provide an excellent biomonitoring tool, they should be applied with caution, considering the recommendations provided in this paper. (C) 2010 Elsevier Ltd. All rights reserved.