1] Integrative Ecology Group, Estación Biológica de Doñana, EBD-CSIC Calle Américo Vespucio s/n, E-41092 Sevilla, Spain [2].
Nat Commun. 2013;4:2350. doi: 10.1038/ncomms3350.
Global environmental change is affecting species distribution and their interactions with other species. In particular, the main drivers of environmental change strongly affect the strength of interspecific interactions with considerable consequences for biodiversity. However, extrapolating the effects observed on pair-wise interactions to entire ecological networks is challenging. Here we propose a framework to estimate the tolerance to changes in the strength of mutualistic interaction that species in mutualistic networks can sustain before becoming extinct. We identify the scenarios where generalist species can be the least tolerant. We show that the least tolerant species across different scenarios do not appear to have uniquely common characteristics. Species' tolerance is extremely sensitive to the direction of change in the strength of mutualistic interaction, as well as to the observed mutualistic trade-offs between the number of partners and the strength of the interactions.
全球环境变化正在影响物种的分布及其与其他物种的相互作用。特别是，环境变化的主要驱动因素强烈影响种间相互作用的强度，对生物多样性产生了重大影响。然而，将观察到的种间相互作用的影响外推到整个生态网络是具有挑战性的。在这里，我们提出了一个框架来估计物种在互惠网络中能够承受的互利相互作用强度变化的容忍度，在这种变化下物种才不会灭绝。我们确定了哪些一般物种最不容易容忍。我们表明，在不同的情景下，最不容易容忍的物种似乎没有独特的共同特征。物种的容忍度对互利相互作用强度变化的方向以及观察到的伙伴数量和相互作用强度之间的互惠权衡非常敏感。
