摘要
为揭示南麂岛潮间带软体动物多样性及其群落结构的现状,于2013年11月、2014年2月、5月、8月分四次对南麂岛的潮间带7个断面进行了定量和定性调查,采用传统多样性分析、群落聚类分析和非度量多维测度、ABC曲线相结合的方法,对软体动物的群落结构及其多样性进行研究。结果显示,(1)共鉴定出软体动物种类63种,隶属于3纲13目34科52属,不同季节的优势种及其优势度都有较大的差别,春、夏、秋、冬四个季节分别有4种、4种、5种和3种,条纹隔贻贝(Septifer virgatus)是四个季节共有且优势度最大的优势种;(2)软体动物群落结构组成的季节变化差异显著,春季、夏季、秋季、冬季组内相似性分别为30.77%、24.66%、19.58%、39.01%,春季-夏季、夏季-秋季、秋季-冬季、冬季-春季平均相异性分别为39.82%、39.00%、47.64%、48.02%;(3)软体动物Shannon-Wiener多样性指数(H')四个季度平均值为冬季(1.73)>春季(1.69)>夏季(1.58)>秋季(1.40);(4)经聚类分析和非度量多维标度(NMDS)分析,该潮间带的软体动物群落可分为两组,主要是受生境不同的影响;(5)ABC曲线表明,春季、秋季、冬季软体动物群落未受到较大干扰,夏季受到中等强度的干扰。
To reveal the community structure and diversity of intertidal zone molluscs in the Nanji Islands, the quantitative and qualitative investigation of Nanji Island intertidal seven sections were studied for four times in November 2013 and February, May, August 2014. Traditional diversity analysis, community and non - metric multi- dimensional cluster, Abundance Biomass Comparison curve analysis method of combining measures were used to research community structure and diversity of molluscs. The results showed that ： （ 1 ） 63 molluscss species were identified belonging to 3 classes, 13 orders, 34 families and 52 genuses. In spring, summer, autumn and winter, 48 kinds, 48 kinds, 45 kinds, 41 kinds of molluscs were identified,respectively. Dominance of species in different seasons is in summer, five in autumn and three in winter. different, and there are four kinds in spring, four dominance of the species researched. （2） Seasonal differences in changes in community structure consisting of molluscs is notable, and spring, summer, autumn, winter group within similarity were 30. 77%, 24. 66%, 19.58%, 39.01%, respectively. In the spring - summer and summer - autumn, autumn - winter, winter - spring, the aver- age dissimilarity were 39. 82%, 39. 00%, 47.64%, 48.02%, respectively. （ 3 ） Molluscs Shannon - Wiener diversity index （H＇） in the fourth quarter average was winter （1.73） 〉 spring （1.69） 〉 summer （1.58） 〉 autumn （1.40）. （4） With cluster analysis and nonmetric multidimensional scaling （NMDS） analysis, the intertidal zone molluscs community can be divided into two groups, mainly due to the different habitats. （5） Abundance Biomass Comparison curve showed that spring, autumn, winter community structure did not suffer significant interference, the summer disturbed moderate intensity.
出处
《渔业研究》
2016年第2期102-111,共10页
Journal of Fisheries Research
基金
国家自然科学基金项目(31270527)
南麂列岛国家海洋自然保护区管理局委托项目(NJKJ-2013-003)
关键词
软体动物
潮间带
多样性
群落结构
南麂岛
molluscs
intertidal zone
diversity
community structure
Nanji Island
