Control of arthropod abundance by Anolis lizards on St. Eustatius (Neth. Antilles)

Control of arthropod abundance by Anolis lizards on St. Eustatius (Neth. Antilles) The two Anolis lizard species of St. Eustatius (Neth. Antilles) have large effects on the abundance of arthropods. Over a six-month period, we excluded Anolis lizards from three experimental areas and maintained three other areas with natural densities of lizards. Exclusion of anoles resulted in a two to three-fold increase in the abundance of arthropods on the forest floor (mainly Dipterans), and a twenty to thirty-fold increase in the abundance of three large web-building spiders. These abundant web-building spiders, in turn, caused approximately a 25% decrease in the abundance of insects between the forest floor and canopy. Exclusion of anoles had no observed effect on the degree of herbivory as assayed by the amount of leaf damage on two plant species. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Oecologia Springer Journals

Control of arthropod abundance by Anolis lizards on St. Eustatius (Neth. Antilles)

Oecologia, Volume 64 (2) – Oct 1, 1984

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Publisher
Springer Journals
Copyright
Copyright © 1984 by Springer-Verlag
Subject
Life Sciences; Ecology; Plant Sciences
ISSN
0029-8549
eISSN
1432-1939
DOI
10.1007/BF00376864
Publisher site
See Article on Publisher Site

Abstract

The two Anolis lizard species of St. Eustatius (Neth. Antilles) have large effects on the abundance of arthropods. Over a six-month period, we excluded Anolis lizards from three experimental areas and maintained three other areas with natural densities of lizards. Exclusion of anoles resulted in a two to three-fold increase in the abundance of arthropods on the forest floor (mainly Dipterans), and a twenty to thirty-fold increase in the abundance of three large web-building spiders. These abundant web-building spiders, in turn, caused approximately a 25% decrease in the abundance of insects between the forest floor and canopy. Exclusion of anoles had no observed effect on the degree of herbivory as assayed by the amount of leaf damage on two plant species.

Journal

OecologiaSpringer Journals

Published: Oct 1, 1984

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