• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Aquatic Sciences >How hydroperiod and species richness affect the balance of resource flows across aquatic-terrestrial habitats
【24h】

How hydroperiod and species richness affect the balance of resource flows across aquatic-terrestrial habitats

机译：水周期和物种丰富度如何影响跨水陆生境的资源流动平衡

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Ecosystem functioning is influenced by the flow of nutrients, detritus, and organisms. Variation in these flows, like that found in temporary ecosystems, affects temporal and spatial patterns of community diversity and secondary production. We evaluated the influence of hydroperiod and ecosystem size on the bi-directional flow of subsidies from intermittent ponds and surrounding forests by quantifying litter deposition and the abundance and biomass of emerging insects and amphibians. In addition, we assessed whether amphibian and insect diversity influenced the magnitude of cross-habitat resource flux. We found substantial spatial and temporal variation in the magnitude, composition, and timing of cross-habitat resource subsidies. Overall, deposition into ponds far exceeded biomass exported via insect and amphibian emergence. We found a negative association between resource flux and the diversity of amphibians and insects. Different species groups contributed to flux patterns unequally, with insects having higher diversity but lower flux compared to amphibians. Organismal flux varied among ponds with amphibians having the highest flux in the shortest hydroperiod pond and insect flux was highest from an intermediate hydroperiod pond. This work reveals how variation in pond size and permanence affects species diversity and ecosystem flows. Species composition played a major role in flux differences across ponds. Further, given the general lack of research and conservation prioritization of temporary ponds, uncovering how these ponds contribute to cross-habitat linkages is necessary to develop fully integrated management strategies.
机译：生态系统功能受养分，碎屑和生物体流动的影响。这些流动的变化，例如在临时生态系统中发现的变化，会影响社区多样性和次级生产的时空格局。通过量化凋落物的沉积以及新兴昆虫和两栖动物的丰度和生物量，我们评估了水周期和生态系统大小对间歇池塘和周围森林的双向补贴流动的影响。此外，我们评估了两栖动物和昆虫的多样性是否影响了跨栖息地资源通量的大小。我们发现，跨栖息地资源补贴的规模，构成和时机存在很大的时空变化。总体而言，进入池塘的沉积物远远超过了通过昆虫和两栖动物出现而出口的生物量。我们发现资源流量与两栖动物和昆虫的多样性之间存在负相关关系。与两栖动物相比，不同物种组对通量模式的贡献不均，昆虫具有较高的多样性，但通量较低。在两栖动物中，有机通量在最短的水生周期池塘中具有最高的通量，而昆虫的通量在中等水生周期池塘中最高。这项工作揭示了池塘大小和永久性的变化如何影响物种多样性和生态系统流量。物种组成在池塘通量差异中起主要作用。此外，由于普遍缺乏对临时池塘的研究和对保护工作的优先考虑，因此有必要弄清这些池塘如何促进跨生境联系，以发展完全综合的管理策略。

著录项

  • 来源
    《Aquatic Sciences》 |2014年第1期|131-143|共13页
  • 作者

    Tiffany A. Schriever; M. W. Cadotte; D. Dudley Williams;

  • 作者单位

    Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Room 3055, Toronto M5S 3B2, Canada Department of Biological Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON M1C1A4, Canada,Department of Zoology, Cordley Hall 3029, Oregon State University, Corvallis, OR 97331-2914, USA;

    Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Room 3055, Toronto M5S 3B2, Canada Department of Biological Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON M1C1A4, Canada;

    Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Room 3055, Toronto M5S 3B2, Canada Department of Biological Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON M1C1A4, Canada;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Amphibians; Biodiversity-ecosystem function; Biomass; Cross-habitat energy flow; Disturbance; Insects; Subsidy hypothesis;

    机译：两栖动物;生物多样性-生态系统功能;生物质跨栖能量流;骚乱;昆虫;补贴假说;

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