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Previous issue date: 2017-02-23 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / A perda de h?bitat e a fragmenta??o est?o entre as maiores amea?as a biodiversidade, podendo levar a decl?nios de comunidades biol?gicas. As respostas a essas perturba??es dependem de fatores da paisagem e tamb?m de fatores intr?nsecos aos fragmentos, al?m de poderem ser diferentes entre esp?cies. O presente trabalho avalia como a ?rea do fragmento, isolamento, forma, qualidade da matriz e a dist?ncia para o curso de ?gua permanente (rio ou lago) mais pr?ximo afetam a riqueza e a abund?ncia de borboletas frug?voras em fragmentos de Mata Atl?ntica no nordeste brasileiro. O estudo foi realizado em 15 fragmentos com ?reas entre 1,7 e 27,4 hectares, inseridos em uma matriz dominada por planta??es de cana-de-a??car e distantes da ?gua entre 0 e cerca de 2000 metros. A riqueza de esp?cies e abund?ncia declinaram com o aumento da dist?ncia para ?gua. A sele??o de modelos sugeriu que a dist?ncia para ?gua ? o principal fator influenciando riqueza e abund?ncia, mas qualidade da matriz tamb?m apareceu como importante fator para a riqueza, enquanto forma do fragmento aparece como fator importante para abund?ncia. Nossos resultados destacam a import?ncia da dist?ncia para um curso de ?gua na manuten??o de comunidades de borboletas frug?voras em ambientes fragmentados de Mata Atl?ntica. / Habitat loss and fragmentation are the biggest threats to biodiversity, contributing to declines in biological communities. The response of species and communities to these disturbances depend on landscape features and characteristics of each fragment, and can also vary among different species. Our study test how fragment area, isolation, shape, matrix quality and distance to the nearest permanent course of water (river or pond) affect fruit-feeding butterfly communities in the northeastern portion of the Brazilian Atlantic Forest. We used 15 fragments, surrounded by a heterogeneous matrix, consisting predominantly of sugarcane crop fields, ranging from 1,7 to 27,4 hectares, spread in distance classes to a permanent course of water ranging from zero to 2000 meters. Species richness and abundance decreased with increased distance to water. Model selection suggested distance to the water as the main factor affecting species richness and abundance, but matrix quality is also an important predictor for species richness, while fragment shape is important for abundance. Our results highlight the importance of distance to a water course in maintaining fruit-feeding butterflies communities in fragmented landscapes in the Atlantic Forest.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/23594 |
| Date | 23 February 2017 |
| Creators | Brito, Marcos Roberto Monteiro de |
| Contributors | 83953361791, http://lattes.cnpq.br/6310990045769627, Ribeiro, Danilo Brandini, 27745540801, Pinto, Miriam Plaza, 95428461187, http://lattes.cnpq.br/7876219494961528, Lion, Mar?lia Bruzzi, Cardoso, M?rcio Zikan |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM ECOLOGIA, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | Portuguese |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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