A trophic cascade in a diverse arthropod community caused by a generalist arthropod predator

被引：83

作者：

Moran M.D. ^{[1
,3
]}

Hurd L.E. ^{[2
]}

机构：

[1] Ecology Program, Department of Biology, University of Delaware, Newark

[2] Department of Biology, Washington and Lee University, Lexington

[3] Dept. of Biology, Hendrix College, Conway

来源：

Oecologia | 1997年 / 113卷 / 1期

关键词：

Arthropod assemblage; Generalist predator; Interaction strength; Tenodera sinensis; Trophic cascade;

D O I：

10.1007/s004420050360

中图分类号：

学科分类号：

摘要：

We tested the hypothesis that a generalist arthropod predator, Tenodera sinensis Saussure, could trigger a trophic cascade in an old-field ecosystem. These mantids had relatively weak effects on abundance and biomass of other carnivorous arthropods as a group. The effect of mantids on herbivores was stronger than on carnivores, mainly concentrated in Homoptera and Diptera. Herbivore load was reduced by mantids with the consequence that overall plant biomass (mainly grasses) was increased. Percapita interaction strengths between mantids and other arthropod taxa were, for the most part, weakly negative. Our study demonstrates that a significant trophic cascade can be triggered by a generalist predator even within the framework of a diverse community with relatively diffuse interactions.

引用

页码：126 / 132

页数：6

共 53 条

[1]

Altegrim O., Exclusion of birds from bilberry stands: Impact on insect larval density and damage to bilberry, Oecologia, 79, pp. 136-139, (1989)

[2]

Brown D.G., Beetle folivory increases resource availability and alters plant invasion in monocultures of goldenrod, Ecology, 75, pp. 1673-1683, (1994)

[3]

Brown V.K., Insect herbivores and plant succession, Oikos, 44, pp. 17-22, (1985)

[4]

Brown V.K., Insect herbivory: Effects on early old field succession demonstrated by chemical exclusion methods, Oikos, 52, pp. 293-302, (1988)

[5]

Brown V.K., Differential effects of above- and belowground insect herbivory during early plant succession, Oikos, 54, pp. 67-76, (1989)

[6]

Carter P.E., Rypstra, Top-down effects in soybean agroecosystems: Spider density affects herbivore damage, Oikos, 72, pp. 433-439, (1995)

[7]

Chase J.M., Abiotic controls of trophic cascades in a simple grassland food chain, Oikos, 77, pp. 495-506, (1996)

[8]

Crawford R.L., Sugg P.M., Edwards J.S., Spider arrival and primary establishment on terrain depopulated by volcanic eruption at Mount St. Helens, Washington, Am Midi Nat, 133, pp. 60-75, (1995)

[9]

Dial R.J., Roughgarden J., Experimental removal of insectivores from rain forest canopy: Direct and indirect effects, Ecology, 76, pp. 1821-1834, (1995)

[10]

Eisenberg R.M., Hurd L.E., Egg dispersion in two species of praying mantids (Mantodea:Mantidae), Proc Entomol Soc Washington, 92, pp. 808-810, (1990)

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