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首页> 美国卫生研究院文献>International Journal of Environmental Research and Public Health >A Multimetric Benthic Macroinvertebrate Index for the Assessment of Stream Biotic Integrity in Korea
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A Multimetric Benthic Macroinvertebrate Index for the Assessment of Stream Biotic Integrity in Korea

机译：用于评估韩国河流生物完整性的多尺度底栖大型无脊椎动物指数

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摘要

At a time when anthropogenic activities are increasingly disturbing the overall ecological integrity of freshwater ecosystems, monitoring of biological communities is central to assessing the health and function of streams. This study aimed to use a large nation-wide database to develop a multimetric index (the Korean Benthic macroinvertebrate Index of Biological Integrity—KB-IBI) applicable to the biological assessment of Korean streams. Reference and impaired conditions were determined based on watershed, chemical and physical criteria. Eight of an initial 34 candidate metrics were selected using a stepwise procedure that evaluated metric variability, redundancy, sensitivity and responsiveness to environmental gradients. The selected metrics were number of taxa, percent Ephemeroptera-Plecoptera-Trichoptera (EPT) individuals, percent of a dominant taxon, percent taxa abundance without Chironomidae, Shannon’s diversity index, percent gatherer individuals, ratio of filterers and scrapers, and the Korean saprobic index. Our multimetric index successfully distinguished reference from impaired conditions. A scoring system was established for each core metric using its quartile range and response to anthropogenic disturbances. The multimetric index was classified by aggregating the individual metric ..scores and the value range was quadrisected to provide a narrative criterion (Poor, Fair, Good and Excellent) to describe the biological integrity of the streams in the study. A validation procedure showed that the index is an effective method for evaluating stream conditions, and thus is appropriate for use in future studies measuring the long-term status of streams, and the effectiveness of restoration methods.
机译：在人为活动日益干扰淡水生态系统整体生态完整性的时代，对生物群落的监测对于评估河流的健康和功能至关重要。这项研究的目的是使用一个大型的全国数据库来开发适用于韩国河流生物评估的多指标指标（韩国底栖生物无脊椎动物大无脊椎动物完整性指数KB-IBI）。参考和受损条件是根据分水岭，化学和物理标准确定的。使用逐步过程选择了初始34个候选指标中的8个，该程序评估了指标的可变性，冗余性，敏感性和对环境梯度的响应度。选定的度量标准是：分类单元数量，星翅目-鞘翅目-Trichoptera（EPT）个体百分比，优势分类单元的百分比，不具有Chironomidae的分类单元丰度百分比，Shannon的多样性指数，收集者百分比，过滤器和刮刀的比率以及韩国腐生指数。我们的多指标索引成功地将参考值与受损条件区分开来。根据每个核心指标的四分位数范围和对人为干扰的响应，建立了一个评分系统。通过汇总各个指标的分数对多指标进行分类，并将值范围四舍五入以提供叙述标准（差，一般，良好和优良）来描述研究中河流的生物完整性。验证程序表明，该指数是评估河流状况的有效方法，因此适合将来用于测量河流的长期状况以及恢复方法的有效性。

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