Nutrient co-limitation of primary producer communities
Nutrient co-limitation of primary producer communities
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DOI：
10.1111/j.1461-0248.2011.01651.x
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发表时间：
2011-09-01
期刊：
影响因子：
8.8
通讯作者：
Smith, Jennifer E.
中科院分区：
文献类型：
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作者：
Harpole, W. Stanley;Ngai, Jacqueline T.;Smith, Jennifer E.
多个限制性资源之间的协同作用是常见的，突出了共同限制作为对初级生产的约束的重要性。在过去的二十年里，我们对资源限制的概念已经从早期的单一资源限制的范式转向了多种资源共同限制的概念，这是由各种理论预测的。在此，我们总结了植物群落中的多资源限制响应，使用641项研究的数据集，这些研究在淡水，海洋和陆地系统中应用了氮（N）和磷（P）的因子添加。我们发现，超过一半的研究显示出某种类型的协同反应，N和P的添加。我们发现支持严格定义的共同限制在28%的研究：即社区生物量响应仅结合N和P的添加，或N和P单独添加时。我们的研究结果强调了N和P之间的相互作用在调节初级生产者群落生物量方面的重要性，并指出需要进一步研究解决可能导致不同类型的共同限制的多种机制。
Synergistic interactions between multiple limiting resources are common, highlighting the importance of co-limitation as a constraint on primary production. Our concept of resource limitation has shifted over the past two decades from an earlier paradigm of single-resource limitation towards concepts of co-limitation by multiple resources, which are predicted by various theories. Herein, we summarise multiple-resource limitation responses in plant communities using a dataset of 641 studies that applied factorial addition of nitrogen (N) and phosphorus (P) in freshwater, marine and terrestrial systems. We found that more than half of the studies displayed some type of synergistic response to N and P addition. We found support for strict definitions of co-limitation in 28% of the studies: i.e. community biomass responded to only combined N and P addition, or to both N and P when added separately. Our results highlight the importance of interactions between N and P in regulating primary producer community biomass and point to the need for future studies that address the multiple mechanisms that could lead to different types of co-limitation.