Metabolic traits predict the effects of warming on phytoplankton competition.

Metabolic traits predict the effects of warming on phytoplankton competition.
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DOI:
10.1111/ele.12932
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发表时间:
2018-05
期刊:
影响因子:
8.8
通讯作者:
Yvon-Durocher G
Yvon-Durocher G
中科院分区:
环境科学与生态学1区
文献类型:
--
作者:
Bestion E;García-Carreras B;Schaum CE;Pawar S;Yvon-Durocher G

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了解温度变化如何影响种间竞争对于预测全球变暖对生态群落的影响至关重要。在这里,我们开发了一个理论模型,链接种间差异的资源获取和增长的温度依赖性的结果,成对的浮游植物竞争。我们参数化我们的模型与这些代谢特征来自六种淡水浮游植物,并测试其能力,预测竞争的结果,在所有成对组合的物种在析因实验中,操纵温度和营养物质的可用性。该模型正确地预测了72%的成对实验中的竞争结果,竞争优势由两个物种的生长速率的热敏感性差异决定。这些结果表明,代谢性状在确定温度变化如何影响种间竞争方面起着关键作用,并为在复杂的多物种群落中机械地预测变暖的影响奠定了基础。
Understanding how changes in temperature affect interspecific competition is critical for predicting changes in ecological communities with global warming. Here, we develop a theoretical model that links interspecific differences in the temperature dependence of resource acquisition and growth to the outcome of pairwise competition in phytoplankton. We parameterised our model with these metabolic traits derived from six species of freshwater phytoplankton and tested its ability to predict the outcome of competition in all pairwise combinations of the species in a factorial experiment, manipulating temperature and nutrient availability. The model correctly predicted the outcome of competition in 72% of the pairwise experiments, with competitive advantage determined by difference in thermal sensitivity of growth rates of the two species. These results demonstrate that metabolic traits play a key role in determining how changes in temperature influence interspecific competition and lay the foundation for mechanistically predicting the effects of warming in complex, multi‐species communities.
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