THE COMMUNITY STRUCTURE OF CORAL-ASSOCIATED DECAPOD CRUSTACEANS
THE COMMUNITY STRUCTURE OF CORAL-ASSOCIATED DECAPOD CRUSTACEANS
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珊瑚相关十足目甲壳类动物的群落结构
DOI：
10.1007/978-1-4615-9146-7_13
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发表时间：
1979
期刊：
影响因子：
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通讯作者：
L. G. Abele
中科院分区：
文献类型：
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作者：
L. G. Abele
巴拿马太平洋沿岸两个地区与分枝珊瑚Pocillopora damicornisis有关的十足类甲壳动物群落。珊瑚的地质年代大致相同，但一个地点的物理条件波动不定，而第二个地点的条件相对稳定。种-面积关系在两个地区没有差异，而恒定环境下的个体-面积回归具有较高的截距，但斜率相同。两个地区的优势度多样性曲线形状相似，但在恒定环境中优势度更大。通才在波动的环境中占主导地位，而专家在恒定的环境中占主导地位。没有证据表明存在物种密集现象，因为两个区域中大小相似的珊瑚头具有相同数量的物种，而且单个珊瑚头的物种组成表明存在随机的殖民过程。这两个区域的同类物种共存的频率没有差别;在这两个区域共存的同类物种比偶然预期的要多。无论是相同的样本大小或个人数量的基础上的两个地区之间的物种丰富度的比较表明，更大的总物种丰富度在波动的环境。有人建议，自然的物理干扰，上升流，减少优势，增加物种丰富度的波动环境。
The decapod crustacean community associated with the branching coralPocillopora damicornisis described from two localities on the Pacific coast of Panama. The corals are of the same approximate geologic age but the physical conditions at one locality fluctuate unpredictably while conditions at the second locality are relatively constant. The species-area relationship does not differ between the two regions while the individuals-area regression of the constant environment has a higher intercept but the same slope. The dominance diversity curves for the two regions are similar in shape but dominance is greater in the constant environment. A generalist is dominant in the fluctuating environment while a specialist is dominant in the constant environment. There is no evidence for species packing as similar-sized coral heads have the same number of species in both regions and the species composition of individual coral heads suggests a random colonization process. There is no difference in the frequency of co-occurrence of congeneric species between the two regions; in both regions more congeners coexist than would be expected by chance. Comparison of species richness between the two areas based on either equal sample size or number of individuals demonstrates a greater total species richness in the fluctuating environment. It is suggested that a natural physical disturbance, upwelling, reduces dominance and increases species richness in the fluctuating environment.