Between-taxon matching of common and rare species richness patterns
Between-taxon matching of common and rare species richness patterns
复制标题
DOI：
10.1111/geb.12372
复制
发表时间：
2015-12
影响因子：
6.4
通讯作者：
Carl J. Reddin;J. Bothwell;J. Lennon
中科院分区：
文献类型：
--
作者：
Carl J. Reddin;J. Bothwell;J. Lennon
目的我们的主要目的是了解稀有(有限范围)和常见(广泛)种的组合在不同分类群之间的相互关系。我们检验了稀有和常见物种的海洋物种丰富度模式不同的命题，无论是在一个分类群内，它们对整个组合的丰富度格局的贡献，还是在分类群之间，它们之间的相关性都是不同的。位置：英国潮间带。方法我们使用英国潮间带大型藻类、软体动物和甲壳类的高分辨率海洋数据集，每个物种超过400种。我们使用空间互相关估计稀有和常见物种对丰富度空间格局的相对贡献，将稀有和共性视为一个连续谱。对类群内部和类群间的相关强度和重要性进行了估计。结果普通种在类群内的丰富度格局中起主导作用，但稀有种通过二项式方差进行等量排列时贡献更大。在分类群之间，普通种相对较小的亚组合(不到60种)彼此产生最大的相关性，而不考虑分类群的配对。稀有物种之间的相互关联通常很弱，仅在一个案例中，最大相关性出现在小的亚组合之间。不同类群的常见种和稀有种之间的相互关系一直很弱或没有。主要结论三个海洋组合中常见物种的丰富度格局是一致的，而稀有物种的丰富度格局一般不一致。常见物种之间较强的相关性与稀有物种之间较弱或不存在的相关性之间的对比表明，驱动普通物种和稀有物种丰富度格局的过程是脱钩的。这些海洋类群丰富度格局的内部结构与观察到的陆地类群相似。
Aim Our primary aim is to understand how assemblages of rare (restricted range) and common (widespread) species are correlated with each other among different taxa. We tested the proposition that marine species richness patterns of rare and common species differ, both within a taxon in their contribution to the richness pattern of the full assemblage and among taxa in the strength of their correlations with each other. Location The UK intertidal zone. Methods We used high-resolution marine datasets for UK intertidal macroalgae, molluscs and crustaceans each with more than 400 species. We estimated the relative contribution of rare and common species, treating rarity and commonness as a continuous spectrum, to spatial patterns in richness using spatial cross-correlations. Correlation strength and significance was estimated both within and between taxa. Results Common species drove richness patterns within taxa, but rare species contributed more when species were placed on an equal footing via scaling by binomial variance. Between taxa, relatively small sub-assemblages (fewer than 60 species) of common species produced the maximum correlation with each other, regardless of taxon pairing. Cross-correlations between rare species were generally weak, with maximum correlation occurring between small sub-assemblages in only one case. Cross-correlations between common and rare species of different taxa were consistently weak or absent. Main conclusions Common species in the three marine assemblages were congruent in their richness patterns, but rare species were generally not. The contrast between the stronger correlations among common species and the weak or absent correlations among rare species indicates a decoupling of the processes driving common and rare species richness patterns. The internal structure of richness patterns of these marine taxa is similar to that observed for terrestrial taxa.