Sardine cycles, krill declines, and locust plagues: revisiting 'wasp-waist' food webs
Sardine cycles, krill declines, and locust plagues: revisiting 'wasp-waist' food webs
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DOI：
10.1016/j.tree.2014.03.011
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发表时间：
2014-06-01
影响因子：
16.8
通讯作者：
Reiss, Christian
中科院分区：
文献类型：
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作者：
Atkinson, Angus;Hill, Simeon L.;Reiss, Christian
“蜂腰”系统由一种中等营养水平的物种主导，这种物种被认为对其食物施加自上而下的控制，对其捕食者施加自下而上的控制。沙丁鱼、鱼和南极磷虾都是建议的例子，在这里，我们用蝗虫来探索蜂腰的概念是否也适用于陆地。这些例子还显示了移动的聚集和饮食多样性的特点，这有助于减少其大型局部生物量的觅食足迹。这表明，对食物的自上而下的控制是在局部聚集规模上进行的，而不是在黄蜂腰最初定义所建议的更广泛的规模上进行的。通过这种修改，黄蜂腰框架可以交叉施肥海洋和陆地方法，揭示看似不同但经济上重要的系统如何运作。
'Wasp-waist' systems are dominated by a mid trophic-level species that is thought to exert top-down control on its food and bottom-up control on its predators. Sardines, anchovy, and Antarctic krill are suggested examples, and here we use locusts to explore whether the wasp-waist concept also applies on land. These examples also display the traits of mobile aggregations and dietary diversity, which help to reduce the foraging footprint from their large, localised biomasses. This suggests that top-down control on their food operates at local aggregation scales and not at wider scales suggested by the original definition of wasp-waist. With this modification, the wasp-waist framework can cross-fertilise marine and terrestrial approaches, revealing how seemingly disparate but economically important systems operate.