Research Institute for Nature and Forest, Duboislaan 14, B-1560 Groenendaal, Belgium.
Mar Pollut Bull. 2010 Jul;60(7):1099-112. doi: 10.1016/j.marpolbul.2010.01.014. Epub 2010 Feb 9.
Fish-based indices monitor changes in surface waters and are a valuable aid in communication by summarising complex information about the environment (Harrison and Whitfield, 2004). A zone-specific fish-based multimetric estuarine index of biotic integrity (Z-EBI) was developed based on a 13 year time series of fish surveys from the Zeeschelde estuary (Belgium). Sites were pre-classified using indicators of anthropogenic impact. Metrics showing a monotone response with pressure classes were selected for further analysis. Thresholds for the good ecological potential (GEP) were defined from references. A modified trisection was applied for the other thresholds. The Z-EBI is defined by the average of the metric scores calculated over a one year period and translated into an ecological quality ratio (EQR). The indices integrate structural and functional qualities of the estuarine fish communities. The Z-EBI performances were successfully validated for habitat degradation in the various habitat zones.
基于鱼类的指标可监测地表水的变化，是对环境进行复杂信息总结的宝贵工具，可用于交流（Harrison 和 Whitfield，2004）。本研究基于泽兰河口（比利时）长达 13 年的鱼类调查时间序列，开发了一种特定区域基于鱼类的综合生物完整性多指标河口指数（Z-EBI）。利用人为影响指标对站位进行预分类。选择与压力等级呈单调响应的指标进行进一步分析。从参考文献中定义了良好生态潜力（GEP）的阈值。其他阈值应用了改良的三分位法。Z-EBI 是通过计算一年期间的各指标得分的平均值来定义的，并转换为生态质量比（EQR）。该指数综合了河口鱼类群落的结构和功能质量。Z-EBI 在各种生境区的生境退化方面的性能得到了成功验证。
