The niche is generally viewed in terms of species' intrinsic physiological potential and limitations due to competition. Although DNA sequencing has revealed the ubiquity of beneficial microbial symbioses, the role of mutualisms in shaping species niches is not broadly recognized. In this review, I use a widespread terrestrial mutualism, the ectomycorrhizal symbiosis, to help develop the mutualistic niche concept. Using contemporary niche theory, I show how mycorrhizal symbioses expand environmental ranges (requirement niche) and influence resource use (impact niche) for both plants and fungi. Simple niche models for competition between resource specialists and generalists also predict a range of ecological phenomena, from unexpected monodominance by some tropical trees to the functional biogeography of mycorrhizal symbiosis. A niche-based view of mutualism may also help explain stability of mutualisms even in the absence of clear benefits. The niche is a central concept in ecology, and better integration...

中文翻译：

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互惠生境：菌根共生和社区动态

通常根据物种的内在生理潜力和竞争限制来看待生态位。尽管 DNA 测序揭示了有益微生物共生的普遍性，但互利共生在塑造物种生态位方面的作用并未得到广泛认可。在这篇评论中，我使用了一种广泛的陆地共生，外生菌根共生，来帮助发展共生生态位概念。使用当代生态位理论，我展示了菌根共生如何扩大植物和真菌的环境范围（需求生态位）并影响资源利用（影响生态位）。资源专家和通才之间竞争的简单利基模型也预测了一系列生态现象，从一些热带树木出人意料的单一优势到菌根共生的功能生物地理学。即使在没有明显好处的情况下，基于利基的互惠主义观点也可能有助于解释互惠主义的稳定性。利基是生态学的核心概念，更好的整合......