Abundance-occupancy relationships in deep sea wood fall communities
Abundance-occupancy relationships in deep sea wood fall communities
复制标题
深海落木群落的丰度-占用关系
DOI：
10.1111/ecog.02618
复制
发表时间：
2017
期刊：
影响因子：
5.9
通讯作者：
McClain, Craig R.
中科院分区：
文献类型：
--
作者：
Webb, Thomas J.;Barry, James P.;McClain, Craig R.
一个物种占据的地点数目与其在这些地点内的平均丰度之间的一般正相关关系，为不同空间尺度上发生的种群进程提供了重要的联系。虽然这种丰度-占有关系（AOR）在非常广泛的分类群和许多不同的环境中都有记载，但对地球最大的生态系统深海中的这种模式知之甚少。木材福尔斯-来自自然或人为输入的木材进入海洋-构成了一个重要的深海栖息地，拥有自己独特的社区，最终完全依赖于木材的化学能源。在这项研究中，我们利用实验性木材降落部署的独特功能，首次在深海无脊椎动物中检查AOR。研究设计结合了实验（易处理性，关键环境参数的控制）和观察（分类学上不同的社区的自然殖民）研究的优势。我们发现，种间AOR是强阳性的48种发生在32个木材下降社区。AOR的精确形式由物种水平的生活史（体型）和群落收获的殖民阶段介导，但不受环境能量（木材下降大小）的影响。物种内的时间动态也普遍与积极的种内AOR相一致。这种支持积极AOR在深海是一个重要的扩展到一个新的环境提供了相当大的潜力，进一步测试和发展机制宏观生态理论的宏观生态一般性。
The generally positive relationship between the number of sites a species occupies and its average abundance within those sites provides an important link between population processes occurring at different spatial scales. Although such abundance–occupancy relationships (AORs) have been documented across a very wide range of taxa and in many different environments, little is known of such patterns in Earth's largest ecosystem, the deep sea. Wood falls – derived from natural or anthropogenic inputs of wood into the oceans – constitute an important deep‐sea habitat, habouring their own unique communities ultimately entirely dependent on the wood for chemical energy. In this study we take advantage of the unique features of an experimental wood fall deployment to examine AORs for the first time in deep‐sea invertebrates. The study design combines advantages of both experimental (tractability, control of key environmental parameters) and observational (natural colonisation by taxonomically diverse communities) studies. We show that the interspecific AOR is strongly positive across the 48 species occurring over 32 wood fall communities. The precise form of the AOR is mediated by both species‐level life history (body size) and by the colonisation stage at which communities were harvested, but not by environmental energy (wood fall size). Temporal dynamics within species are also generally consistent with positive intraspecific AORs. This support for positive AORs in the deep sea is an important extension of a macroecological generality into a new environment offering considerable potential for further testing and developing mechanistic macroecological theories.