CAJ | 학술논문

2008年4月下旬在渤海湾近岸海域进行了21个站位的大型底栖动物调查,共发现大型底栖动物99种,其中包括多毛类24科45种,软体动物15科19种,棘皮动物3科3种,甲壳动物18科25种,其他类群7种. 调查区内大型底栖动物的优势现象不明显,优势度指数大于1%的物种仅有7种,分别为黄海埃刺梳鳞虫、深钩毛虫、不倒翁虫、豆形胡桃蛤、长尾虫、绒毛细足蟹和纽虫. 调查区内大型底栖动物的总栖息密度平均值为228.81 m~(-2),总生物量平均值为36.03 g/m~2,其中多毛类的平均栖息密度为71.43 m~(-2),生物量为2.95 g/m~2;软体动物的平均栖息密度为76.19 m~(-2),生物量为8.28 g/m~2;棘皮动物的平均栖息密度为6.90 m~(-2),生物量为16.69 g/m~2;甲壳动物的平均栖息密度为53.10 m~(-2),生物量为4.53 g/m~2. 调查区内大型底栖动物的香农-威纳多样性指数为0～4.18,平均值为2.99;丰富度指数为0～2.97,平均值为1.71;均匀度指数为0.51～1.00,平均值为0.84. 与1959年全国海洋综合调查的渤海底栖生物调查结果比较表明,近半个世纪以来渤海湾近岸海域大型底栖动物的平均生物量显著升高,群落结构有所改变.
2008년4월하순재발해만근안해역진행료21개참위적대형저서동물조사,공발현대형저서동물99충,기중포괄다모류24과45충,연체동물15과19충,극피동물3과3충,갑각동물18과25충,기타류군7충. 조사구내대형저서동물적우세현상불명현,우세도지수대우1%적물충부유7충,분별위황해애자소린충、심구모충、불도옹충、두형호도합、장미충、융모세족해화뉴충. 조사구내대형저서동물적총서식밀도평균치위228.81 m~(-2),총생물량평균치위36.03 g/m~2,기중다모류적평균서식밀도위71.43 m~(-2),생물량위2.95 g/m~2;연체동물적평균서식밀도위76.19 m~(-2),생물량위8.28 g/m~2;극피동물적평균서식밀도위6.90 m~(-2),생물량위16.69 g/m~2;갑각동물적평균서식밀도위53.10 m~(-2),생물량위4.53 g/m~2. 조사구내대형저서동물적향농-위납다양성지수위0～4.18,평균치위2.99;봉부도지수위0～2.97,평균치위1.71;균균도지수위0.51～1.00,평균치위0.84. 여1959년전국해양종합조사적발해저서생물조사결과비교표명,근반개세기이래발해만근안해역대형저서동물적평균생물량현저승고,군락결구유소개변.
Macrobenthos were investigated at 21 sites in the coastal seawaters of Bohai Bay in the last ten days of April 2008. In total, 99 species were found, including 45 species of Polychaeta belonging to 24 families, 19 species of Mollusca (15 families), three species of Echinodermata (three families), 25 species of Crustacea (18 families), and seven species of other taxonomies. The phenomenon of predominance species was not obvious in the observation area. The predominance indices of only seven species were higher than 1%- Hesperonoe huanghainsis, Sigambra bassi, Sternaspis scutata, Nucula faba, Aspeudes sp., Raphidopus ciliatus and Nemertinea. The average inhabiting density of macrobenthos was 228.81 m~(-2), and the average biomass was 36.03 g/m~2 in the sampling sites. The average inhabiting densities of Polychaeta, Mollusca, Echinodermata, and Crustacea were 71.43, 76.19, 6.90, and 53.10 m~(-2) respectively, and their average biomasses were 2.95, 8.28, 16.69, and 4.53 g/m~2 respectively. The range of Shannon-Wiener index of macrobenthos in the investigated seawater was 0- 4.18, with an average of 2.99; the range of with the national comprehensive ocean investigation results during 1959, the average biomass of macrobenthos in Bohai Bay has increased significantly, and the community structure has changed obviously during the past 50 years.