Herbivory and Its Consequences
作者:
M. I. Dyer,
C. L. Turner,
T. R. Seastedt,
期刊:
Ecological Applications
(WILEY Available online 1993)
卷期:
Volume 3,
issue 1
页码: 10-16
ISSN:1051-0761
年代: 1993
DOI:10.2307/1941781
出版商: Ecological Society of America
数据来源: WILEY
摘要:
We argue that herbivores often induce nonlinear or biphasic growth and development in plants. Collectively these individual responses translate into a system—level optimization curve wherein at low levels of herbivory overall community responses show increases in production potential, whereas extreme herbivory causes extreme reduction in productivity. The transition between these two states defines a point of optimal herbivory in respect to C and N processes.We present four case examples from the literature demonstrating such nonlinear responses, suggesting a widespread existence for this herbivore—plant phenomenon. The nonlinear responses appear to demonstrate temporal and spatial scale dependencies.
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