Department of Biology, Center of Biodiversity and Ecosystem Stewardship, Villanova, Pennsylvania, USA.
Department of Biology, Eastern Michigan University, Ypsilanti, Michigan, USA.
Ecology. 2022 Jun;103(6):e3626. doi: 10.1002/ecy.3626. Epub 2022 Apr 17.
Plants are subject to trade-offs among growth strategies such that adaptations for optimal growth in one condition can preclude optimal growth in another. Thus, we predicted that a plant species that responds positively to one global change treatment would be less likely than average to respond positively to another treatment, particularly for pairs of treatments that favor distinct traits. We examined plant species' abundances in 39 global change experiments manipulating two or more of the following: CO , nitrogen, phosphorus, water, temperature, or disturbance. Overall, the directional response of a species to one treatment was 13% more likely than expected to oppose its response to a another single-factor treatment. This tendency was detectable across the global data set, but held little predictive power for individual treatment combinations or within individual experiments. Although trade-offs in the ability to respond to different global change treatments exert discernible global effects, other forces obscure their influence in local communities.
植物在生长策略之间存在权衡，例如在一种条件下最佳生长的适应可能会排除在另一种条件下的最佳生长。因此，我们预测，对一种全球变化处理方式反应积极的植物物种，其对另一种处理方式反应积极的可能性低于平均水平，特别是对于有利于不同特征的两种处理方式。我们在 39 项全球变化实验中检查了植物物种的丰度，这些实验操纵了以下两个或更多因素：CO 2 、氮、磷、水、温度或干扰。总的来说，一个物种对一种处理的定向反应比预期更有可能与它对另一种单一因素处理的反应相矛盾。这种趋势在全球数据集上是可以检测到的，但对个别处理组合或个别实验没有多少预测能力。尽管对不同全球变化处理方式的反应能力存在权衡，但其他力量掩盖了它们在当地社区中的影响。
