...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ecosphere >Environmental niche models for riverine desert fishes and their similarity according to phylogeny and functionality
【24h】

Environmental niche models for riverine desert fishes and their similarity according to phylogeny and functionality

机译：根据系统发育和功能的河流荒漠鱼类环境生态位模型及其相似性

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Environmental filtering and competitive exclusion are hypotheses frequently invoked in explaining species' environmental niches (i.e., geographic distributions). A key assumption in both hypotheses is that the functional niche (i.e., species traits) governs the environmental niche, but few studies have rigorously evaluated this assumption. Furthermore, phylogeny could be associated with these hypotheses if it is predictive of functional niche similarity via phylogenetic signal or convergent evolution, or of environmental niche similarity through phylogenetic attraction or repulsion. The objectives of this study were to investigate relationships between environmental niches, functional niches, and phylogenies of fishes of the Upper ( UCRB ) and Lower ( LCRB ) Colorado River Basins of southwestern North America. We predicted that functionally similar species would have similar environmental niches (i.e., environmental filtering) and that closely related species would be functionally similar (i.e., phylogenetic signal) and possess similar environmental niches (i.e., phylogenetic attraction). Environmental niches were quantified using environmental niche modeling, and functional similarity was determined using functional trait data. Nonnatives in the UCRB provided the only support for environmental filtering, which resulted from several warmwater nonnatives having dam number as a common predictor of their distributions, whereas several cool‐ and coldwater nonnatives shared mean annual air temperature as an important distributional predictor. Phylogenetic signal was supported for both natives and nonnatives in both basins. Lastly, phylogenetic attraction was only supported for native fishes in the LCRB and for nonnative fishes in the UCRB . Our results indicated that functional similarity was heavily influenced by evolutionary history, but that phylogenetic relationships and functional traits may not always predict the environmental distribution of species. However, the similarity of environmental niches among warmwater centrarchids, ictalurids, fundulids, and poeciliids in the UCRB indicated that dam removals could influence the distribution of these nonnatives simultaneously, thus providing greater conservation benefits. However, this same management strategy would have more limited effects on nonnative salmonids, catostomids, and percids with colder temperature preferences, thus necessitating other management strategies to control these species.
机译：在解释物种的环境利基（即地理分布）时经常引用环境过滤和竞争排斥的假设。在这两个假设中的一个关键假设是功能生态位（即物种特征）支配环境生态位，但是很少有研究严格评估该假设。此外，如果系统发育通过系统发育信号或会聚进化预测功能性生态位相似性，或通过系统发育吸引或排斥性预测环境生态位相似性，则可以与这些假设相关联。本研究的目的是调查北美西南部科罗拉多河上游（UCRB）和下游（LCRB）鱼类的环境生态位，功能生态位和系统发育之间的关系。我们预测功能相似的物种将具有相似的环境生态位（即环境过滤），而密切相关的物种将具有功能相似的条件（即系统发生信号）并拥有相似的环境生态位（即系统发育吸引力）。使用环境生态位建模对环境生态位进行量化，并使用功能性状数据确定功能相似性。 UCRB中的非本地人为环境过滤提供了唯一的支持，这是由几个以大坝数作为其分布的共同预测指标的温水非本地人，而几个冷水和冷水非本地人共享的年平均气温是重要的分布预测指标。两个盆地的本地和非本地人都支持系统发生信号。最后，仅在LCRB中支持本地鱼类和在UCRB中支持非本地鱼类的系统发育吸引力。我们的结果表明，功能相似性受进化历史的严重影响，但系统发育关系和功能性状可能并不总是能预测物种的环境分布。但是，UCRB中温水中央河系，鱼，角砾岩和泥ec等环境利基的相似性表明，大坝的拆除可能同时影响这些非本地生物的分布，从而提供更大的保护效益。但是，这种相同的管理策略对非本地鲑科动物，Catastomides和温度偏低的害虫的影响有限，因此需要其他管理策略来控制这些物种。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号