当前位置: X-MOL 学术Theor. Ecol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Persistence and stability of interacting species in response to climate warming: the role of trophic structure
Theoretical Ecology ( IF 1.6 ) Pub Date : 2020-04-26 , DOI: 10.1007/s12080-020-00456-9
Taranjot Kaur , Partha Sharathi Dutta

Over the past century, the Earth has experienced roughly 0.4–0.8 C rise in the average temperature and which is projected to increase between 1.4 and 5.8 C by the year 2100. The increase in the Earth’s temperature directly influences physiological traits of individual species in ecosystems. However, the effect of these changes in community dynamics, so far, remains relatively unknown. Here, we show that the consequences of warming (i.e., increase in the global mean temperature) on the interacting species persistence or extinction are correlated with their trophic complexity and community structure. In particular, we investigate different nonlinear bioenergetic tri-trophic food web modules, commonly observed in nature, in the order of increasing trophic complexity: a food chain, a diamond food web, and an omnivorous interaction. We find that at low temperatures, warming can destabilize the species dynamics in the food chain as well as the diamond food web, but it has no such effect on the trophic structure that involves omnivory. In the diamond food web, our results indicate that warming does not support top-down control induced co-existence of intermediate species. However, in all the trophic structures, warming can destabilize species up to a threshold temperature. Beyond the threshold temperature, warming stabilizes species dynamics at the cost of the extinction of higher trophic species. We demonstrate the robustness of our results when a few system parameters are varied together with the temperature. Overall, our study suggests that variations in the trophic complexity of simple food web modules can influence the effects of climate warming on species dynamics.

中文翻译:

相互作用物种对气候变暖的持久性和稳定性:营养结构的作用

在过去的一个世纪中,地球经历了平均温度大约0.4-0.8∘C的上升,并且预计将在1.4到5.8∘之间上升。到2100年达到C。地球温度的升高直接影响生态系统中单个物种的生理特征。但是,到目前为止,这些变化对社区动态的影响仍然相对未知。在这里,我们表明变暖(即全球平均温度升高)对相互作用的物种持续存在或灭绝的后果与其营养复杂性和群落结构相关。特别是,我们研究了自然界中通常观察到的不同的非线性生物能三营养食物网模块,它们的营养复杂性从高到低依次为:食物链,钻石食物网和杂食性相互作用。我们发现,在低温下,变暖会破坏食物链和钻石食物网中物种的动态,但它对涉及杂食性的营养结构没有这种影响。在钻石食物网中,我们的结果表明变暖不支持自上而下的控制引起中间物种的共存。但是,在所有营养结构中,变暖会破坏物种的稳定性,直至达到阈值温度。超过阈值温度,变暖以更高营养物种的灭绝为代价稳定了物种动态。当几个系统参数随温度变化时,我们证明了结果的鲁棒性。总体而言,我们的研究表明,简单食物网模块的营养复杂性变化会影响气候变暖对物种动态的影响。我们的结果表明,变暖不支持自上而下的控制引起中间物种的共存。但是,在所有营养结构中,变暖会破坏物种的稳定性,直至达到阈值温度。超过阈值温度,变暖以更高营养物种的灭绝为代价稳定了物种动态。当几个系统参数随温度变化时,我们证明了结果的鲁棒性。总体而言,我们的研究表明,简单食物网模块的营养复杂性变化会影响气候变暖对物种动态的影响。我们的结果表明,变暖不支持自上而下的控制引起中间物种的共存。但是,在所有营养结构中,变暖会破坏物种的稳定性,直至达到阈值温度。超过阈值温度,变暖以更高营养物种的灭绝为代价稳定了物种动态。当几个系统参数随温度变化时,我们证明了结果的鲁棒性。总体而言,我们的研究表明,简单食物网模块的营养复杂性变化会影响气候变暖对物种动态的影响。气候变暖以更高营养物种的灭绝为代价稳定了物种动态。当几个系统参数随温度变化时,我们证明了结果的鲁棒性。总体而言,我们的研究表明,简单食物网模块的营养复杂性变化会影响气候变暖对物种动态的影响。气候变暖以高营养物种的灭绝为代价稳定了物种动态。当几个系统参数随温度变化时,我们证明了结果的鲁棒性。总体而言,我们的研究表明,简单食物网模块的营养复杂性变化会影响气候变暖对物种动态的影响。
更新日期:2020-04-26
down
wechat
bug