首页> 外文期刊>Nature >Return of the niche
【24h】

Return of the niche

机译:利基的回归

获取原文
获取原文并翻译 | 示例
           

摘要

Two ideas vie for prominence in community ecology - 'niche partitioning' and 'neutral theory'. A survey of patterns of tree abundance in tropical forest prompts fresh thinking on their respective effects. New data and novel analyses invigorate old debates. A provocative example, published in the journal Ecology, comes in the form of a paper by Kelly et al. that will spark fresh argument over the question of the factors that determine patterns of biodiversity. Traditional explanations for the local coexistence of species hold that the balance of nature is delicately related to differences in how species interact with their local environments (their 'niches'), with populations of each species being primarily regulated by distinct environmental factors. Such niche partitioning results in stable frequency dependence, in which each species increases relative to others when it is rare, and decreases when it is common. This venerable view has been confronted with the contention, arising from recent modelling work, that stochastic demography and dispersal are more important, and that they allow the widespread coexistence of species with identical niches. This 'neutral theory' has provided possible explanations for the occurrence of highly diverse communities that challenge the traditional view, and has indicated ways to account for them with simple models.
机译:两种在社区生态中争夺优势的想法是“生态位划分”和“中立理论”。对热带森林中树木丰度模式的调查促使人们重新思考其各自的影响。新数据和新颖分析激起了古老的争论。凯利等人以论文形式发表在《生态学》杂志上的一个挑衅性例子。这将引发有关决定生物多样性模式的因素问题的新论据。关于物种在当地共存的传统解释认为,自然的平衡与物种与当地环境(它们的“生态位”)相互作用的方式之间存在微妙的联系,每种物种的种群主要受不同的环境因素调控。这种小生境划分导致稳定的频率依赖性,其中每个物种在稀有情况下相对于其他物种增加,而在常见情况下减少。这种古老的观点面临着最近的建模工作引起的争论,即随机人口统计和分散更为重要,并且它们允许具有相同生态位的物种广泛共存。这种“中立理论”为挑战传统观点的高度多样化的社区的出现提供了可能的解释,并指出了用简单模型解释它们的方式。

著录项

  • 来源
    《Nature》 |2008年第7200期|p.3941|共2页
  • 作者

    Mathew A. Leibold;

  • 作者单位

    Department of Planetary Sciences, University of Arizona, Tucson, Arizona 85721, USA.;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自然科学总论;
  • 关键词

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