STRUCTURAL AND TROPHIC CHANGES IN A RIVERINE MACROBENTHIC COMMUNITY FOLLOWING IMPOUNDMENT FOR HYDROELECTRIC POWER-GENERATION

被引：3

作者：

CAMARGO, JA ^{[1
]}

DEJALON, DG ^{[1
]}

机构：

[1] UNIV POLITECN MADRID,ETSI MONTES,DEPT INGN FORESTAL,E-28040 MADRID,SPAIN

来源：

JOURNAL OF FRESHWATER ECOLOGY | 1995年 / 10卷 / 04期

关键词：

D O I：

10.1080/02705060.1995.9663453

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Structural and trophic changes in a benthic macroinvertebrate community downriver from Valparaiso Reservoir (northwestern Spain) were compared before (1986) and after (1990-1991) the creation of that hydropower impoundment. The number of taxonomic groups, total biomass and total density significantly declined under the influence of the new flow regulation, with scrapers (as relative density) being the functional feeding group most adversely affected. The environmental impact decreased with time after the construction of the dam. Taxonomic richness and diversity of predators appeared to be the most sensitive biological indicators of the progressive recovery of the macrobenthic community.

引用

页码：311 / 317

页数：7

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