食物网
生态系统
非生物成分
营养水平
生态学
顶级掠食者
捕食
营养级联
资源(消歧)
生物
环境科学
计算机科学
计算机网络
作者
Bailey C. McMeans,Kevin S. McCann,Murray M. Humphries,Neil Rooney,Aaron T. Fisk
标识
DOI:10.1016/j.tree.2015.09.001
摘要
Temporal variation characterizes many of Earth's ecosystems. Despite this, little is known about how food webs respond to regular variation in time, such as occurs broadly with season. We argue that season, and likely any periodicity, structures food webs along a temporal axis in an analogous way to that previously recognized in space; predators shift their diet as different resource compartments and trophic levels become available through time. These characteristics are likely (i) central to ecosystem function and stability based on theory, and (ii) widespread across ecosystem types based on empirical observations. The temporal food web perspective outlined here could provide new insight into the ecosystem-level consequences of altered abiotic and biotic processes that might accompany globally changing environments.
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