摘要
１９９１～１９９４年对老江河底栖动物进行了连续４ａ的季节采样，共获底栖动物３２种，其中寡毛类８种，水生昆虫１０种，软体动物１２种，其他２种，底栖动物年均密度变动于２９７～３７３个／，年均生物量变动于８３６１２～１１８２１７ｇ／。对底栖动物的季节变动、多样性指数变化进行了分析，并对底栖动物的渔产潜力进行了估算。
Seasonal sampling of zoobenthos in Laojianghe oxbow was carried out for four years from 1991 to 1994. Altogether 32 species were recorded. Among them were 8 species of oligochaets, 10 species of aquatic insects,12 species of molluscs and 2 species of miscellaneous animals. Annual mean density and biomass of zoobenthos ranged from 297～373 ind/ and from 83.612～118.217 g/ respectively. Seasonal changes in density and biomass and in diversity indexes of zoobenthos in Laojianghe Oxbow were also analysed. An evaluation was made on the potential fish production that can be supported by zoobenthos
出处
《湖北农学院学报》
1999年第1期31-34,共4页
Journal of Hubei Agricultural College
基金
国家科技攻关项目
关键词
底栖动物
渔业利用
老江河
季节变动
zoobenthos
fishery utilization
Laojianghe Oxbow
seasonal changes
