Species-specific responses to warming alter community composition

1. Species are responding to global climate change in varied and nuanced ways. However, how species-specific responses to climate change affect interactions among species remains poorly understood. It is important to understand species interactions under potential climate change scenarios because those interactions can in turn alter community dynamics.

2. In this study, we conducted two complementary experiments to examine how simulated warming might alter larval intraguild predation (IGP) rates and resulting adult assemblage composition in three species of North American dragonflies: Pachydiplax longipennis, Plathemis lydia, and Libellula luctuosa.

3. First, using both P. longipennis and L. luctuosa, we isolated inter- and intraspecific pairs of larval dragonflies of different size differentials to determine how size and species identity might influence IGP rates.

4. In tandem, we conducted a year-long mesocosm experiment with all three species to assess how simulated warming ...

1. 物种对全球气候变化的响应呈现出多样且细致入微的特征。然而，物种特异性的气候变化响应如何影响物种间相互作用，目前仍不甚明晰。在潜在气候变化情景下理解物种间相互作用至关重要，因为此类相互作用反过来可改变群落动态。
2. 本研究开展两项互补性实验，旨在探究模拟增温如何改变三种北美蜻蜓——长翅黑蜻（Pachydiplax longipennis）、斑翅蜻（Plathemis lydia）和蓝面蜻（Libellula luctuosa）——的幼虫集团内捕食（intraguild predation, IGP）速率，及其最终形成的成虫群落组成。
3. 首先，我们以长翅黑蜻与蓝面蜻为实验材料，设置不同体型差异的蜻蜓幼虫种间与种内配对组合，以明确体型与物种身份对集团内捕食速率的影响。
4. 与此同时，我们针对全部三种物种开展了为期一年的中型实验生态系统（mesocosm）实验，以评估模拟增温对……