Evaluation of a fine sediment biomonitoring tool across a wide range of temperate rivers and streams
Evaluation of a fine sediment biomonitoring tool across a wide range of temperate rivers and streams
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对广泛温带河流和溪流的精细沉积物生物监测工具进行评估
DOI：
10.1111/fwb.12429
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发表时间：
2014
影响因子：
2.7
通讯作者：
Turley M
中科院分区：
文献类型：
--
作者：
Turley M
细沉积物（悬浮和沉积）含量的增加是淡水生态系统生态退化的一个常见原因。然而，监测这些参数以支持国家和国际水资源立法既耗时又昂贵。沉积物敏感无脊椎动物比例（PSI）指数是一种生物监测工具，旨在识别河流和溪流的沉积程度。尽管PSI指数具有良好的生物学基础，但迄今为止，仅在两个集水区根据观测到的细颗粒沉积物数据进行了检验; PSI指数的其他已发表的应用依赖于推断的细泥沙值。在这项研究中，我们报告了PSI指数在温带河流和河流生态系统的广泛参考条件下的性能的综合分析结果，包括835个有沉积物数据的站点和451个有悬浮固体数据的站点（1978年至2002年期间测量的数据点超过12 500个）。还研究了分类水平和分类分辨率对PSI指数性能的影响，以及PSI指数相对于其他非沉积物特定指数的性能，包括每分类群平均得分（ASPT）、流动无脊椎动物评价指数（LIFE）、蜉蝣目、鳞翅目和毛翅目（EPT）丰度、EPT丰度%、EPT丰度和EPT丰度%。本研究结果表明，PSI指数与细沉积物指标的相关性高于其他生物指标：rs=-0.64（P<0.01，n = 2502）对于沉积物和rs =-0.50（P<0.01，n = 1353）对于悬浮物。考虑到PSI和细泥沙指标之间的关系的变化，我们建议使用更客观的数据，定量的方法测量沉积细泥沙可能有助于提高性能的模型，为未来的应用和推进细泥沙动力学和压力响应关系的理解。
Elevated levels of fine sediment (suspended and deposited) are a common cause of ecological degradation in freshwater ecosystems. However, it is time‐consuming and expensive to monitor these parameters to support national and international water resource legislation.The Proportion of Sediment‐sensitive Invertebrates (PSI) index is a biomonitoring tool that is designed to identify the degree of sedimentation in rivers and streams. Despite having a sound biological basis, until now, the PSI index has only been tested against observed fine sediment data in two catchments; other published applications of the PSI index have relied on inferred fine sediment values.In this study, we report the results of a comprehensive analysis of the performance of the PSI index across a wide range of reference condition temperate stream and river ecosystems, including 835 sites with data on deposited sediment and 451 sites with data on suspended solids (>12 500 data points measured between 1978 and 2002).The effect of taxonomic level and taxonomic resolution on the performance of the PSI index was also examined, as was the performance of the PSI index against other non‐sediment‐specific indices, including Average Score Per Taxon (ASPT), Lotic‐invertebrate Index for Flow Evaluation (LIFE), Ephemeroptera, Plecoptera and Trichoptera (EPT) abundance, % EPT abundance, EPT richness and % EPT richness.The results of this study show that the PSI index was more correlated with fine sediment metrics than the other biological indices tested:rs= −0.64, (P<0.01,n= 2502) for deposited sediment andrs= −0.50 (P<0.01,n= 1353) for suspended solids.We highlight the optimal conditions for applying the PSI index, in its current form. Given the variability in the relationship between PSI and fine sediment metrics, we propose that the use of data from more objective, quantitative methods of measuring deposited fine sediment may help to enhance the performance of the model for future applications and advance understanding of fine sediment dynamics and the pressure–response relationship.
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DOI：
10.1016/j.agee.2013.09.015
发表时间：
2013
期刊：
Agriculture, Ecosystems & Environment
影响因子：
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影响因子：
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影响因子：
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DOI：
--
发表时间：
1996
期刊：
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Lizhu Wang;T. Simonson;J. Lyons
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