Artículos de revistas
Vegetation Structure Determines Insect Herbivore Diversity In Seasonally Dry Tropical Forests
Registro en:
Journal Of Insect Conservation. Springer, v. 20, p. 979 - 988, 2016.
1366-638X
1572-9753
WOS:000392077800005
10.1007/s10841-016-9930-6
Autor
Oliveira Leal
Camila Rabelo; Silva
Jhonathan Oliveira; Sousa-Souto
Leandro; Neves
Frederico de Siqueira
Institución
Resumen
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Vegetation structure can often determine insect herbivore fauna in forests, but this mechanism has been demonstrated in seasonally dry tropical forests (SDTFs) only at small spatial scales. In this study we evaluated the effects of the geographical location of SDTFs and vegetation structure on insect herbivore communities (leaf-chewing and sap-sucking guilds) in three Brazilian ecoregions (Cerrado, Cerrado/Caatinga transition, and Caatinga). We tested the following predictions: (1) insect herbivore species composition, richness, abundance and beta diversity differ among forests in different ecoregions; (2) insect richness, abundance and beta diversity are positively related to tree richness and density; (3) spatial turnover of species is the primary mechanism that generates herbivorous insect beta-diversity in different ecoregions, and is positively influenced by tree richness. The composition, richness, and abundance of herbivorous insects differed over SDFs along the gradient of Cerrado and Caatinga. Both herbivore guilds responded positively to tree richness. Tree density only determined the richness and abundance of sap-sucking herbivores. Insect beta-diversity was similar among Cerrado and transition areas, but lower in Caatinga itself; beta-diversity was also positively affected by tree richness. Species turnover, as opposed to nestedness, was the main mechanism generating beta-diversity, but itself was not related to tree richness. We demonstrate in this study the importance of landscape diversity and availability of local resources for herbivorous insect communities, and we emphasize the importance of SDTF conservation in different ecoregions as a result of species turnover. 20 6 979 988 Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) Fundacao de Amparo a Pesquisa de Minas Gerais (FAPEMIG) Fundacao de Apoio a Pesquisa e a Inovacao Tecnologica do Estado de Sergipe (FAPITEC) Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) Rede Matas Secas Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)