Habitat amount, habitat heterogeneity, and their effects on arthropod species diversity

Detalhes bibliográficos
Autor(a) principal: Britto, Bruno Travassos de
Data de Publicação: 2013
Outros Autores: Rocha, Pedro Luís Bernardo da
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/15842
Resumo: p. 207-214
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spelling Britto, Bruno Travassos deRocha, Pedro Luís Bernardo daBritto, Bruno Travassos deRocha, Pedro Luís Bernardo da2014-09-08T20:59:03Z2014-09-08T20:59:03Z20131195-6860http://repositorio.ufba.br/ri/handle/ri/15842v. 20, n. 3p. 207-214Not all studies have empirically supported the model that predicts a positive relationship between habitat heterogeneity and biodiversity. We hypothesized that these different results stem from the methods used to assess habitat heterogeneity; many studies used variables that are somewhat correlated in nature and measure 2 different features of the environment: a) the number of structure types (habitat heterogeneity) and b) the number of structures, disregarding their types (habitat amount). We tested this hypothesis with a single experiment that assigned orthogonal values of habitat heterogeneity and habitat amount to artificial environments located on the floor of a forest remnant. We statistically controlled the number of individuals in each environment to prevent a random sample effect. We used the number of arthropod morphospecies present in the environments after 60 d as our dependent variable. The results indicate that habitat heterogeneity had no significant effect on species richness, while habitat amount showed a positive effect when the number of individuals was not controlled. Neither habitat heterogeneity nor habitat amount affected species richness when the number of individuals was controlled. We conclude that conflicting results in previous tests of the heterogeneity model could stem from conceptual and methodological problems in experimental conception. We suggest that further studies distinguish between heterogeneity and area effects, design proper controls for different effects, and consider the spatial scale of the ecological processes that influence species diversity.Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2014-05-08T12:42:06Z No. of bitstreams: 1 10.2980-20-3-3606.pdf: 232523 bytes, checksum: 8ec2eff570ad05dbe2369ba853830b99 (MD5)Approved for entry into archive by Alda Lima da Silva (sivalda@ufba.br) on 2014-09-08T20:59:03Z (GMT) No. of bitstreams: 1 10.2980-20-3-3606.pdf: 232523 bytes, checksum: 8ec2eff570ad05dbe2369ba853830b99 (MD5)Made available in DSpace on 2014-09-08T20:59:03Z (GMT). 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dc.title.pt_BR.fl_str_mv Habitat amount, habitat heterogeneity, and their effects on arthropod species diversity
dc.title.alternative.pt_BR.fl_str_mv Ecoscience -Quebec
title Habitat amount, habitat heterogeneity, and their effects on arthropod species diversity
spellingShingle Habitat amount, habitat heterogeneity, and their effects on arthropod species diversity
Britto, Bruno Travassos de
Atlantic Rainforest,
Complexity measurements
Habitat complexity hypothesis
Spatial heterogeneity
title_short Habitat amount, habitat heterogeneity, and their effects on arthropod species diversity
title_full Habitat amount, habitat heterogeneity, and their effects on arthropod species diversity
title_fullStr Habitat amount, habitat heterogeneity, and their effects on arthropod species diversity
title_full_unstemmed Habitat amount, habitat heterogeneity, and their effects on arthropod species diversity
title_sort Habitat amount, habitat heterogeneity, and their effects on arthropod species diversity
author Britto, Bruno Travassos de
author_facet Britto, Bruno Travassos de
Rocha, Pedro Luís Bernardo da
author_role author
author2 Rocha, Pedro Luís Bernardo da
author2_role author
dc.contributor.author.fl_str_mv Britto, Bruno Travassos de
Rocha, Pedro Luís Bernardo da
Britto, Bruno Travassos de
Rocha, Pedro Luís Bernardo da
dc.subject.por.fl_str_mv Atlantic Rainforest,
Complexity measurements
Habitat complexity hypothesis
Spatial heterogeneity
topic Atlantic Rainforest,
Complexity measurements
Habitat complexity hypothesis
Spatial heterogeneity
description p. 207-214
publishDate 2013
dc.date.issued.fl_str_mv 2013
dc.date.accessioned.fl_str_mv 2014-09-08T20:59:03Z
dc.date.available.fl_str_mv 2014-09-08T20:59:03Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://repositorio.ufba.br/ri/handle/ri/15842
dc.identifier.issn.none.fl_str_mv 1195-6860
dc.identifier.number.pt_BR.fl_str_mv v. 20, n. 3
identifier_str_mv 1195-6860
v. 20, n. 3
url http://repositorio.ufba.br/ri/handle/ri/15842
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.country.fl_str_mv Brasil
dc.source.pt_BR.fl_str_mv http://dx.doi.org/10.2980/20-3-3606
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
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reponame_str Repositório Institucional da UFBA
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