Projected losses of global mammal and bird ecological strategies
Projected losses of global mammal and bird ecological strategies
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DOI：
10.1038/s41467-019-10284-z
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发表时间：
2019-05-23
影响因子：
16.6
通讯作者：
Bates, Amanda E.
中科院分区：
文献类型：
--
作者：
Cooke, Robert S. C.;Eigenbrod, Felix;Bates, Amanda E.
物种和它们的生态策略正在消失。本文利用物种特征量化了15484种陆地哺乳动物和鸟类的当前和未来生态策略多样性。我们揭示了一个生态策略表面，以生活史（快-慢）和体重（小-大）为一个主轴，饮食（无脊椎动物-食草动物）和栖息地宽度（通才-专才）为另一个主轴。我们还发现，在所有可能的性状组合中，目前只有9%实现了。基于物种灭绝的可能性，我们预测这种有限的可行策略将在未来100年内进一步减少，使哺乳动物和鸟类物种池转向小型、快速、高产、以昆虫为食的通才。事实上，我们的研究结果表明，这种生态策略多样性的预期下降要比物种只是随机消失的情况大得多。因此，阻止与高度濒危动物相关的生态策略的不成比例的损失是保护工作的一项关键挑战。
Species, and their ecological strategies, are disappearing. Here we use species traits to quantify the current and projected future ecological strategy diversity for 15,484 land mammals and birds. We reveal an ecological strategy surface, structured by life-history (fast-slow) and body mass (small-large) as one major axis, and diet (invertivore-herbivore) and habitat breadth (generalist-specialist) as the other. We also find that of all possible trait combinations, only 9% are currently realized. Based on species' extinction probabilities, we predict this limited set of viable strategies will shrink further over the next 100 years, shifting the mammal and bird species pool towards small, fast-lived, highly fecund, insect-eating, generalists. In fact, our results show that this projected decline in ecological strategy diversity is much greater than if species were simply lost at random. Thus, halting the disproportionate loss of ecological strategies associated with highly threatened animals represents a key challenge for conservation.