摘要
根据2013年春季(4月)和秋季(11月)在九龙江口开展的游泳动物资源调查资料,分析该海域游泳动物的种类组成、区系特点、群聚结构和多样性水平等群落结构特征。结果显示,调查海域共有游泳动物76种,隶属于16目40科59属,其中鱼类种类最多,有41种,蟹类次之,有15种,再次虾类13种,虾蛄4种,头足类3种;鱼类以暖水性、底层和近底层种类为主;优势种春季有6种,秋季有3种,均为重要经济种,游泳动物资源群聚结构良好;春秋季资源密度仅分别为252.3 kg/km2和402.5 kgkm2,属于偏低水平;春季的种类多样性指数略高于秋季,但都处于较低水平。
Based on the data of fish resource survey from Jiulongjiang Estuary in spring （April） and autumn （November） 2013, the nekton species composition, floristic characteristics, community structure and biodi- versity were analyzed. The results showed that there were 76 kinds of nekton in Jiulongjiang Estuary in spring and autumn, belonging 16 orders, 40 families and 59 genera, including 41 fishes, 15 crabs, 13 shrimps, 4 squillas and 3 cephalopods. The warm waters species were most in fishes, as well as the demersal and near - bottom fishes; there were 6 kinds of dominant species in spring and 3 kinds of dominant species in autumn, which were important economic species, indicating a good community structure; the resource densities in weight in spring and autumn were 252.3 kg/km^2 and 402. 5 kg/km^2 respectively, on a low level; the biodiversity of nekton in spring was higher than the one in autumn, but both of the biodiversity were at a low level.
出处
《福建水产》
2015年第3期194-201,共8页
Journal of Fujian Fisheries
基金
厦门海沧港区航道整治一期工程渔业资源现状调查
关键词
游泳动物
种类组成
群落结构
九龙江口
nekton
species composition
community structure
Jiulongjiang Estuary
