CAJ | 학술논문

对广东湛江红树林保护区高桥核心区软体动物进行采样调查，共采集软体动物20种，隶属1门2纲13科．其中桐花树＋红海榄(Acgiceras corniculatum ＋ Rhizophora stylosa )群落10种，桐花树＋秋茄(Acgiceras corniculatum ＋ Kandelia candel )群落6种，桐花树＋白骨壤(Acgiceras corniculatum ＋ Avicennia marina )群落13种，白骨壤＋桐花树群落(Avicennia marina ＋ Acgiceras corniculatum )16种．对软体动物密度数据进行季节和红树植物群落类型进行无重复双因素方差分析，结果显示软体动物栖息密度主要受红树植物群落类型而不是季节的影响．对定量取样中获得的20个物种以 Shannon-Wiener 指数为基础进行了生态位宽度测定，以 Pianka重叠指数为基础进行了生态位重叠值分析，结果表明琵琶拟沼螺(Assiminea lutea )、黑口滨螺(Littoraria melanostoma )和粗糙滨螺(Littorina scaber )的生态位较宽，均为2．0以上，它们之间的生态重叠值也较高，均为0．70以上．以密度数据4次开方为基础，利用欧氏距离进行群落物种的系统聚类分析，结果表明物种的聚类可以反映群落中物种生态位重叠值，但是生态位宽度的研究，要针对不同物种来分析．非度量多维标度排序分析也支持以上结果．研究表明，物种生态宽度、物种之间的生态位重叠值与物种的分布与数量密切相关，反映了软体动物群落中各物种对生境资源利用能力的强弱．
대엄동담강홍수림보호구고교핵심구연체동물진행채양조사，공채집연체동물20충，대속1문2강13과．기중동화수＋홍해람(Acgiceras corniculatum ＋ Rhizophora stylosa )군락10충，동화수＋추가(Acgiceras corniculatum ＋ Kandelia candel )군락6충，동화수＋백골양(Acgiceras corniculatum ＋ Avicennia marina )군락13충，백골양＋동화수군락(Avicennia marina ＋ Acgiceras corniculatum )16충．대연체동물밀도수거진행계절화홍수식물군락류형진행무중복쌍인소방차분석，결과현시연체동물서식밀도주요수홍수식물군락류형이불시계절적영향．대정량취양중획득적20개물충이 Shannon-Wiener 지수위기출진행료생태위관도측정，이 Pianka중첩지수위기출진행료생태위중첩치분석，결과표명비파의소라(Assiminea lutea )、흑구빈라(Littoraria melanostoma )화조조빈라(Littorina scaber )적생태위교관，균위2．0이상，타문지간적생태중첩치야교고，균위0．70이상．이밀도수거4차개방위기출，이용구씨거리진행군락물충적계통취류분석，결과표명물충적취류가이반영군락중물충생태위중첩치，단시생태위관도적연구，요침대불동물충래분석．비도량다유표도배서분석야지지이상결과．연구표명，물충생태관도、물충지간적생태위중첩치여물충적분포여수량밀절상관，반영료연체동물군락중각물충대생경자원이용능력적강약．
This study was conducted to explore the structure of the mollusca community and niche in Zhangjiang Mangrove Nature Reserves.The mollusks community in the four kinds of mangrove communities in the core region of Gaoqiao town were studies.A total of 20 species in the investigation, belonging to 13 families,2 classes and 1 phyla were collected.The numbers of species found in the Acgiceras corniculatum + Rhizophora stylosa ,Acgiceras corniculatum + Kandelia candel ,Acgiceras corniculatum + Avicennia marina ,Avicennia marina + Acgiceras corniculatum community were 10,6 , 13 and 1 6,respectively.Taking season and habitat as analysis factors,we found that the mollusk inhabited density was significantly different among the four habitats (P < 0.05 ),but not significantly different among the four seasons (P >0.05 )by the method of nonrepetitive double factors variance analysis.The tests of the Shannon-Wiener′s niche breadth index and the Pianka′s niche overlaps index,showed that Assiminea lutea ,Littoraria melanostoma and Littorina scaber had broad niche breadths(above 2?00);the niche overlaps among them was high(above 0.70).Based on the fourth power of mollusks density,using the Hierarchical Cluster of between-groups linkage method and the Non-matric Multidimentional Scaling method,we found that the method can reflect the niche overlaps among mollusks,but the niche breadths should base on the different species to analytical.The results revealed that the niche breadth and the niche overlap reflected the species distribution,the quantity characters and the species ability to utilize the environmental resource.