Edge effect benefits galling insects in the Brazilian Amazon
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We investigated the influence of edge effects on communities of galling insects in the Brazilian Amazon. For this, were performed data analyses comparing the galling richness between disturbed and undisturbed areas, and subsequently evaluated the richness of galling at different distances from the forest edge. We registered 194 galling insect morphotypes in 116 host plant species. Galling insect richness was more pronounced in disturbed areas and closer to the forest edge, both to community in general as to specific host plant taxa. These results indicate positive responses of galling insect richness to edge effects in forest environments. Edge effect could influence the galling distribution in modified habitats because increases the stress conditions of the plants and decreases the attack pressure of natural enemies.
KeywordsAmazonian fragmentation Edge effect Habitat modifications Galling diversity
We thank to anonymous reviewers by important suggestions to manuscript; to colleagues who helped in field work; to Mineração Rio Norte––MRN by project funding; to STCP Engenharia de Projetos Ltda by logistical support; and to ICMBio Porto Trombeta by license for the development of research.
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