A zone-specific fish-based biotic index as a management tool for the Zeeschelde estuary (Belgium)

被引:46
作者
Breine, Jan [1 ,2 ]
Quataert, Paul [1 ]
Stevens, Maarten [1 ]
Ollevier, Frans [2 ]
Volckaert, Filip A. M. [3 ]
Van den Bergh, Ericia [1 ]
Maes, Joachim [4 ]
机构
[1] Res Inst Nat & Forest, B-1560 Groenendaal, Belgium
[2] Katholieke Univ Leuven, Lab Aquat Ecol & Evolutionary Biol, B-3000 Louvain, Belgium
[3] Katholieke Univ Leuven, Lab Anim Div & Systemat, B-3000 Louvain, Belgium
[4] Commiss European Communities, Joint Res Ctr, Inst Environm & Sustainabil, Rural Water & Ecosyst Resources Unit, I-21027 Ispra, VA, Italy
关键词
Biotic integrity; Fish-based index; Meso- and oligohaline estuary; Freshwater; European Water Framework Directive; Zeeschelde; COMMUNITY DEGRADATION INDEX; ENVIRONMENTAL-CONDITION; ECOLOGICAL QUALITY; EUROPEAN ESTUARIES; SCHELDT ESTUARY; WATER-QUALITY; INTEGRITY; RIVER; ASSEMBLAGES; FRAMEWORK;
D O I
10.1016/j.marpolbul.2010.01.014
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
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. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1099 / 1112
页数:14
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