摘要
于2010—2011年对汤河水库和大伙房水库底栖动物群落结构进行了调查研究。结果表明:汤河水库共鉴定底栖动物15种,分属于3门7科,平均密度为224.61 ind./m2,平均生物量为4.69 g/m2,优势种为霍甫水丝蚓Limnodrilus hoffmeisteri和克拉伯水丝蚓L.claparedianus;大伙房水库共鉴定底栖动物19种,分属于3门6科,平均密度为235.77 ind./m2,平均生物量为101.56 g/m2,优势种为霍甫水丝蚓、克拉伯水丝蚓和苏氏尾腮蚓Branchiura sowerbyi;汤河水库底栖动物密度与活性磷、BOD5均呈极显著正相关(P<0.01),大伙房水库栖动物密度与BOD5呈极显著正相关(P<0.01),与温度呈显著负相关(P<0.05);汤河水库底层鱼类的渔产潜力估算为11.59 kg/(hm2·a),即全库每年可生产20 800 kg;大伙房水库底层鱼类的渔产潜力估算为32.11 kg/(hm2·a),即全库每年可生产171 000 kg。水质生态评价结果表明,两座水库均处于中度污染状态。
The zoobenthos community structures were surveyed in Tanghe Reservoir and Dahuofang Reservoir from 2010 to 2011. Fifteen zoobentho species in 7 famihes and 3 phyla were found in Tanghe Reservoir with average density of 224.61 ind./m2 , average biomass of 4.69 g/m2 , and predominant species Limnodrilus hoffmeisteri and Limnodrilus claparedianus. Nineteen zoobentho species in 6 families and 3 phyla were observed in Dahuofang Res- ervoir with average density of 235.77 ind./m2, average biomass of 101.56 g/m2, and predominant species Limno- drilus hoffmeisteri, Limnodrilus claparedianus and Branchiura sowerbyi. There was a very significantly positive cor- relation between zoobenthos density and available phosphorus levels and BOD5 in Tanghe Reservoir （ P〈0.01 ）. The very significantly positive correlation was found between the zoobenthos density and BOD5 （P〈O. 01 ） and nega- tive significant correlation with water temperature （P〈0.05） in Dahuofang Reservoir. The potential fishery produc- tivity of ground fishes was estimated at 11.59 kg/（ hm2 a） in Tanghe Reservoir, namely totally 20 800 kg in the reservoir. The potential annual fishery productivity of ground fishes was found at 32.11 kg/（hm2 a）in Dahuofang Reservoir, namely totally 171 000 kg in the reservoir.
出处
《大连海洋大学学报》
CAS
CSCD
北大核心
2013年第4期383-389,共7页
Journal of Dalian Ocean University
基金
辽宁省海洋与渔业厅项目(200920)
关键词
汤河水库
大伙房水库
底栖动物
群落结构
底层鱼产量
水质生态评价
Tanghe Reservoir
Dahuofang Reservoir
zoobenthos
community structure
ground fish production
water quality ecological evaluation
