Metabolic plasticity can amplify ecosystem responses to global warming.
Metabolic plasticity can amplify ecosystem responses to global warming.
复制标题
代谢可塑性可以放大生态系统对全球变暖的反应。
DOI：
10.1038/s41467-022-29808-1
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发表时间：
2022-04-20
影响因子：
16.6
通讯作者：
中科院分区：
文献类型：
--
作者：
生物体有能力通过驯化或适应来改变它们对变暖的生理反应，但这种代谢可塑性对通过食物网的能量流动的影响目前尚不清楚，也不存在一个通用的框架来模拟其生态系统水平的影响。在这里，利用自然温度梯度对溪流无脊椎动物进行的温度控制实验，我们表明，生物在长期暴露于变暖后提高代谢率的能力随着身体尺寸的增加而降低。长期暴露在较高的温度下也会增加整体器官代谢率的急性热敏性，与身体大小无关。与基于生态代谢理论的传统模型相比，仅在升温+2 °C的情况下，代谢可塑性可以解释高出60%的生态系统能量通量。这可以解释为什么在最近的中观实验中，长期变暖会随着时间的推移放大生态系统的呼吸速率，并突出了在全球变暖对生态系统影响的预测模型中嵌入代谢可塑性的必要性。生物体可以改变它们对气候变暖的生理反应。在这里，作者证明了暴露在变暖中后提高代谢率的能力与身体大小成反比，并提供了一个数学模型，该模型估计新陈代谢的可塑性可以放大生态系统中的能量流动，以响应变暖。
Organisms have the capacity to alter their physiological response to warming through acclimation or adaptation, but the consequence of this metabolic plasticity for energy flow through food webs is currently unknown, and a generalisable framework does not exist for modelling its ecosystem-level effects. Here, using temperature-controlled experiments on stream invertebrates from a natural thermal gradient, we show that the ability of organisms to raise their metabolic rate following chronic exposure to warming decreases with increasing body size. Chronic exposure to higher temperatures also increases the acute thermal sensitivity of whole-organismal metabolic rate, independent of body size. A mathematical model parameterised with these findings shows that metabolic plasticity could account for 60% higher ecosystem energy flux with just +2 °C of warming than a traditional model based on ecological metabolic theory. This could explain why long-term warming amplifies ecosystem respiration rates through time in recent mesocosm experiments, and highlights the need to embed metabolic plasticity in predictive models of global warming impacts on ecosystems. Organisms can alter their physiological response to warming. Here, the authors show that the ability to raise metabolic rate following exposure to warming is inverse to body size and provide a mathematical model which estimates that metabolic plasticity could amplify energy flux through ecosystems in response to warming.
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影响因子：
3.4
作者：
Lang, Birgit;Ehnes, Roswitha B.;Rall, Bjoern C.
通讯作者：
Rall, Bjoern C.
影响因子：
10.7
作者：
Darriba, Diego;Posada, David;Flouri, Tomas
通讯作者：
Flouri, Tomas
影响因子：
2.7
作者：
Brodersen, Klaus Peter;Pedersen, Ole;Jensen, Michael Tranekjaer
通讯作者：
Jensen, Michael Tranekjaer
DOI：
10.1111/1365-2656.12384
发表时间：
2015-09
期刊：
The Journal of animal ecology
影响因子：
--
作者：
Auer SK;Salin K;Rudolf AM;Anderson GJ;Metcalfe NB
通讯作者：
Metcalfe NB
影响因子：
9.8
作者：
Drummond AJ;Ho SY;Phillips MJ;Rambaut A
通讯作者：
Rambaut A