Spatial patterns and predictors of trophic control in marine ecosystems
Spatial patterns and predictors of trophic control in marine ecosystems
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DOI：
10.1111/ele.12481
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发表时间：
2015-10-01
期刊：
影响因子：
8.8
通讯作者：
Leggett, William C.
中科院分区：
文献类型：
--
作者：
Boyce, Daniel G.;Frank, Kenneth T.;Leggett, William C.
生态学中的一个关键问题是，在何种条件下，生态系统结构往往受到资源可用性与消费者压力的控制。从理论、实验和观测领域的研究中得出的几个假设已经被提出，但一个统一的解释仍然难以捉摸。在这里，我们在对北方半球海洋生态系统内进行的52项观测实地研究的综合分析中确定了营养控制的常见预测因子，并在1951年至2014年期间发表。对45个候选变量的空间回归分析表明，温度是主要的预测因子，对营养控制的单峰效应都是直接作用的（r（2）=0.32; P
A key question in ecology is under which conditions ecosystem structure tends to be controlled by resource availability vs. consumer pressure. Several hypotheses derived from theory, experiments and observational field studies have been advanced, yet a unified explanation remains elusive. Here, we identify common predictors of trophic control in a synthetic analysis of 52 observational field studies conducted within marine ecosystems across the Northern Hemisphere and published between 1951 and 2014. Spatial regression analysis of 45 candidate variables revealed temperature to be the dominant predictor, with unimodal effects on trophic control operating both directly (r(2)=0.32; P