Padrões de distribuição de mamíferos de médio e grande porte em paisagens fragmentadas
Autor(a) principal: | |
---|---|
Data de Publicação: | 2012 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFG |
Texto Completo: | http://repositorio.bc.ufg.br/tede/handle/tede/12095 |
Resumo: | Habitat fragmentation is defined as the breaking of a continuous habitat in “patches” or fragments. This process leads to environmental changes capable of affecting communities in different ways, causing species composition changes. Beta diversity measures can show the variation between the composition of different communities, where two ecological patterns can be found: turnover and nestedness. In turnover the variation in community structure is a consequence of species replacement, while in the nestedness poor communities are nested in richer communities. Here I tested: (I) how habitat fragmentation affects the presence of large e medium sized mammals in different functional groups; (II) if the variation in beta diversity in fragmented landscapes is caused by turnover or nestedness, and (III) if the variation observed was due to habitat fragmentation. I used 19 Semidecidous Forest patches in the Brazilian Cerrado, from the State of Goiás. Landscape metrics from 2.5 km around the patches were obtained from classifications and measurements. For the analyses, I made four sets based in diet, size, diet amplitude and all previous three together. I calculated the beta diversity with Sorensen indices, turnover with Simpson indices and nestedness with Nestedness indices. The natural area size influenced the group B3- felines and the core area percentage, the groups A1-carnivores, larges and B3-felines. The core area percentages were the most important character in fragmented landscapes for mammal communities. The felines were the most sensible group. This group was affected by natural area availability and by the core area percentage. The beta diversity pattern in the fragmented landscapes was turnover, but it was not related to environmental variation or spatial distances between the landscapes. Both nestedness and beta diversity were affected by spatial distance, but beta diversity was also affected by environmental variation linked to landscape connectivity. The changes in different landscapes cause different responses in species and allow the creation of a fragmentation gradient, driving the turnover phenomenon. The carnivores were the species most sensible to habitat fragmentation, mainly because they need large home ranges. Thus, an understanding of how diversity reacts to habitat fragmentation may provide support to the implementation of conservation areas and research upgrading which focus specific species groups. Managed areas with large core areas and good connectivity should bring desirable results for large and medium sized mammals conservation status. This affirmative is true, especially for larger mammals and carnivores. |
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Melo, Fabiano Rodrigues dehttp://lattes.cnpq.br/6863533704023271Oliveira, Arthur Ângelo Bispo dehttp://lattes.cnpq.br/1100433822757573Pedro, Wagner AndréMarco Júnior, Paulo DeMelo, Fabiano Rodrigues dehttp://lattes.cnpq.br/9028220462380536Bernardo, Paulo Vitor dos Santos2022-05-31T11:41:55Z2022-05-31T11:41:55Z2012-01-03BERNARDO, P. V. S. Padrões de distribuição de mamíferos de médio e grande porte em paisagens fragmentadas. 2012. 99 f. Dissertação (Mestrado em Ecologia e Evolução) - Universidade Federal de Goiás, Goiânia, 2012.http://repositorio.bc.ufg.br/tede/handle/tede/12095Habitat fragmentation is defined as the breaking of a continuous habitat in “patches” or fragments. This process leads to environmental changes capable of affecting communities in different ways, causing species composition changes. Beta diversity measures can show the variation between the composition of different communities, where two ecological patterns can be found: turnover and nestedness. In turnover the variation in community structure is a consequence of species replacement, while in the nestedness poor communities are nested in richer communities. Here I tested: (I) how habitat fragmentation affects the presence of large e medium sized mammals in different functional groups; (II) if the variation in beta diversity in fragmented landscapes is caused by turnover or nestedness, and (III) if the variation observed was due to habitat fragmentation. I used 19 Semidecidous Forest patches in the Brazilian Cerrado, from the State of Goiás. Landscape metrics from 2.5 km around the patches were obtained from classifications and measurements. For the analyses, I made four sets based in diet, size, diet amplitude and all previous three together. I calculated the beta diversity with Sorensen indices, turnover with Simpson indices and nestedness with Nestedness indices. The natural area size influenced the group B3- felines and the core area percentage, the groups A1-carnivores, larges and B3-felines. The core area percentages were the most important character in fragmented landscapes for mammal communities. The felines were the most sensible group. This group was affected by natural area availability and by the core area percentage. The beta diversity pattern in the fragmented landscapes was turnover, but it was not related to environmental variation or spatial distances between the landscapes. Both nestedness and beta diversity were affected by spatial distance, but beta diversity was also affected by environmental variation linked to landscape connectivity. The changes in different landscapes cause different responses in species and allow the creation of a fragmentation gradient, driving the turnover phenomenon. The carnivores were the species most sensible to habitat fragmentation, mainly because they need large home ranges. Thus, an understanding of how diversity reacts to habitat fragmentation may provide support to the implementation of conservation areas and research upgrading which focus specific species groups. Managed areas with large core areas and good connectivity should bring desirable results for large and medium sized mammals conservation status. This affirmative is true, especially for larger mammals and carnivores.A fragmentação de habitats pode ser entendida como a quebra de um habitat contínuo em “pedaços” ou fragmentos. As alterações ambientais provenientes desse processo influenciam as comunidades de diferentes formas podendo causar variações em sua composição de espécies. A diversidade beta pode ser um indicativo da variação entre a composição das comunidades, podendo gerar dois padrões de variação, o turnover e o aninhamento. No turnover ocorre a substituição de espécies ao longo das comunidades, enquanto no aninhamento há a formação de subgrupos a partir de comunidades mais ricas. Neste trabalho testei: (I) como a fragmentação de habitats influencia a presença dos mamíferos de médio e grande porte agrupados em grupos funcionais; (II) como a diversidade beta está sendo influenciada por estes processos de fragmentação de habitats, levando a um padrão de substituição ou aninhamento de espécies e se as mudanças podem ser atribuídas à fragmentação. Utilizei dados de amostragens de mamíferos de médio e grande porte em 19 fragmentos de Floresta Estacional Semidecidual localizados no bioma Cerrado no estado de Goiás. A paisagem que se encontrava 2,5 Km ao redor dos fragmentos foi mapeada, e neste perímetro calculada as métricas da paisagem. Para análise, formei quatro conjuntos de grupos com os mamíferos, baseados na dieta, na massa corporal, na amplitude de nicho trófico e na junção dos três anteriores. A diversidade beta foi calculada segundo o índice de Sorensen, o turnover pelo índice de Simpson e o aninhamento pelo índice de Nestedness. A quantidade de área influenciou a presença do grupo B3 – felinos e a porcentagem de área nuclear os grupos A1 – carnívoros, grandes e B3- felinos. A porcentagem de área nuclear na paisagem é a característica mais importante para a presença dos mamíferos na paisagem fragmentada. Os felinos foram o grupo mais sensível sendo influenciados pela quantidade de área e porcentagem de área nuclear. A diversidade beta nas paisagens fragmentadas está estruturada pela substituição de espécies, mas somente a diversidade beta foi influenciada pela variação ambiental relacionada a conectividade das paisagens. As diferentes alterações nas paisagens provocam diferentes respostas nas espécies e permitem a criação de um gradiente de fragmentação impulsionando o processo de substituição de espécies. A manutenção de fragmentos com grande quantidade de área nuclear e boa conectividade favorece a conservação de mamíferos, principalmente os de grande porte e carnívoros.Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2022-05-30T14:28:52Z No. of bitstreams: 2 Dissertação - Paulo Vitor dos Santos Bernardo - 2012.pdf: 3691953 bytes, checksum: 9657cc3fccec02f60471985914bbc584 (MD5) license_rdf: 805 bytes, checksum: 4460e5956bc1d1639be9ae6146a50347 (MD5)Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2022-05-31T11:41:55Z (GMT) No. of bitstreams: 2 Dissertação - Paulo Vitor dos Santos Bernardo - 2012.pdf: 3691953 bytes, checksum: 9657cc3fccec02f60471985914bbc584 (MD5) license_rdf: 805 bytes, checksum: 4460e5956bc1d1639be9ae6146a50347 (MD5)Made available in DSpace on 2022-05-31T11:41:55Z (GMT). No. of bitstreams: 2 Dissertação - Paulo Vitor dos Santos Bernardo - 2012.pdf: 3691953 bytes, checksum: 9657cc3fccec02f60471985914bbc584 (MD5) license_rdf: 805 bytes, checksum: 4460e5956bc1d1639be9ae6146a50347 (MD5) Previous issue date: 2012-01-03Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPqCoordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESporUniversidade Federal de GoiásPrograma de Pós-graduação em Ecologia e Evolução (ICB)UFGBrasilInstituto de Ciências Biológicas - ICB (RG)Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessMamíferosFragmentação de habitatMammalsHabitat fragmentationCIENCIAS BIOLOGICAS::ECOLOGIAPadrões de distribuição de mamíferos de médio e grande porte em paisagens fragmentadasinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis355005005005005002316301reponame:Repositório Institucional da UFGinstname:Universidade Federal de Goiás (UFG)instacron:UFGLICENSElicense.txtlicense.txttext/plain; charset=utf-81748http://repositorio.bc.ufg.br/tede/bitstreams/f1e443b3-fa80-4109-984e-3e680bc7cbb6/download8a4605be74aa9ea9d79846c1fba20a33MD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8805http://repositorio.bc.ufg.br/tede/bitstreams/4fd697db-cbca-4c07-9332-6b36c5e4d86c/download4460e5956bc1d1639be9ae6146a50347MD52ORIGINALDissertação - Paulo Vitor dos Santos Bernardo - 2012.pdfDissertação - Paulo Vitor dos Santos Bernardo - 2012.pdfapplication/pdf3691953http://repositorio.bc.ufg.br/tede/bitstreams/5841761f-57f1-4140-b779-4132e7f846a5/download9657cc3fccec02f60471985914bbc584MD53tede/120952022-05-31 08:41:55.991http://creativecommons.org/licenses/by-nc-nd/4.0/Attribution-NonCommercial-NoDerivatives 4.0 Internationalopen.accessoai:repositorio.bc.ufg.br:tede/12095http://repositorio.bc.ufg.br/tedeRepositório InstitucionalPUBhttp://repositorio.bc.ufg.br/oai/requesttasesdissertacoes.bc@ufg.bropendoar:2022-05-31T11:41:55Repositório Institucional da UFG - Universidade Federal de Goiás (UFG)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 |
dc.title.pt_BR.fl_str_mv |
Padrões de distribuição de mamíferos de médio e grande porte em paisagens fragmentadas |
title |
Padrões de distribuição de mamíferos de médio e grande porte em paisagens fragmentadas |
spellingShingle |
Padrões de distribuição de mamíferos de médio e grande porte em paisagens fragmentadas Bernardo, Paulo Vitor dos Santos Mamíferos Fragmentação de habitat Mammals Habitat fragmentation CIENCIAS BIOLOGICAS::ECOLOGIA |
title_short |
Padrões de distribuição de mamíferos de médio e grande porte em paisagens fragmentadas |
title_full |
Padrões de distribuição de mamíferos de médio e grande porte em paisagens fragmentadas |
title_fullStr |
Padrões de distribuição de mamíferos de médio e grande porte em paisagens fragmentadas |
title_full_unstemmed |
Padrões de distribuição de mamíferos de médio e grande porte em paisagens fragmentadas |
title_sort |
Padrões de distribuição de mamíferos de médio e grande porte em paisagens fragmentadas |
author |
Bernardo, Paulo Vitor dos Santos |
author_facet |
Bernardo, Paulo Vitor dos Santos |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Melo, Fabiano Rodrigues de |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/6863533704023271 |
dc.contributor.advisor-co1.fl_str_mv |
Oliveira, Arthur Ângelo Bispo de |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://lattes.cnpq.br/1100433822757573 |
dc.contributor.referee1.fl_str_mv |
Pedro, Wagner André |
dc.contributor.referee2.fl_str_mv |
Marco Júnior, Paulo De |
dc.contributor.referee3.fl_str_mv |
Melo, Fabiano Rodrigues de |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/9028220462380536 |
dc.contributor.author.fl_str_mv |
Bernardo, Paulo Vitor dos Santos |
contributor_str_mv |
Melo, Fabiano Rodrigues de Oliveira, Arthur Ângelo Bispo de Pedro, Wagner André Marco Júnior, Paulo De Melo, Fabiano Rodrigues de |
dc.subject.por.fl_str_mv |
Mamíferos Fragmentação de habitat |
topic |
Mamíferos Fragmentação de habitat Mammals Habitat fragmentation CIENCIAS BIOLOGICAS::ECOLOGIA |
dc.subject.eng.fl_str_mv |
Mammals Habitat fragmentation |
dc.subject.cnpq.fl_str_mv |
CIENCIAS BIOLOGICAS::ECOLOGIA |
description |
Habitat fragmentation is defined as the breaking of a continuous habitat in “patches” or fragments. This process leads to environmental changes capable of affecting communities in different ways, causing species composition changes. Beta diversity measures can show the variation between the composition of different communities, where two ecological patterns can be found: turnover and nestedness. In turnover the variation in community structure is a consequence of species replacement, while in the nestedness poor communities are nested in richer communities. Here I tested: (I) how habitat fragmentation affects the presence of large e medium sized mammals in different functional groups; (II) if the variation in beta diversity in fragmented landscapes is caused by turnover or nestedness, and (III) if the variation observed was due to habitat fragmentation. I used 19 Semidecidous Forest patches in the Brazilian Cerrado, from the State of Goiás. Landscape metrics from 2.5 km around the patches were obtained from classifications and measurements. For the analyses, I made four sets based in diet, size, diet amplitude and all previous three together. I calculated the beta diversity with Sorensen indices, turnover with Simpson indices and nestedness with Nestedness indices. The natural area size influenced the group B3- felines and the core area percentage, the groups A1-carnivores, larges and B3-felines. The core area percentages were the most important character in fragmented landscapes for mammal communities. The felines were the most sensible group. This group was affected by natural area availability and by the core area percentage. The beta diversity pattern in the fragmented landscapes was turnover, but it was not related to environmental variation or spatial distances between the landscapes. Both nestedness and beta diversity were affected by spatial distance, but beta diversity was also affected by environmental variation linked to landscape connectivity. The changes in different landscapes cause different responses in species and allow the creation of a fragmentation gradient, driving the turnover phenomenon. The carnivores were the species most sensible to habitat fragmentation, mainly because they need large home ranges. Thus, an understanding of how diversity reacts to habitat fragmentation may provide support to the implementation of conservation areas and research upgrading which focus specific species groups. Managed areas with large core areas and good connectivity should bring desirable results for large and medium sized mammals conservation status. This affirmative is true, especially for larger mammals and carnivores. |
publishDate |
2012 |
dc.date.issued.fl_str_mv |
2012-01-03 |
dc.date.accessioned.fl_str_mv |
2022-05-31T11:41:55Z |
dc.date.available.fl_str_mv |
2022-05-31T11:41:55Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
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masterThesis |
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publishedVersion |
dc.identifier.citation.fl_str_mv |
BERNARDO, P. V. S. Padrões de distribuição de mamíferos de médio e grande porte em paisagens fragmentadas. 2012. 99 f. Dissertação (Mestrado em Ecologia e Evolução) - Universidade Federal de Goiás, Goiânia, 2012. |
dc.identifier.uri.fl_str_mv |
http://repositorio.bc.ufg.br/tede/handle/tede/12095 |
identifier_str_mv |
BERNARDO, P. V. S. Padrões de distribuição de mamíferos de médio e grande porte em paisagens fragmentadas. 2012. 99 f. Dissertação (Mestrado em Ecologia e Evolução) - Universidade Federal de Goiás, Goiânia, 2012. |
url |
http://repositorio.bc.ufg.br/tede/handle/tede/12095 |
dc.language.iso.fl_str_mv |
por |
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por |
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500 500 500 500 500 |
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23 |
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163 |
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0 1 |
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Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
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Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Goiás |
dc.publisher.program.fl_str_mv |
Programa de Pós-graduação em Ecologia e Evolução (ICB) |
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UFG |
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Brasil |
dc.publisher.department.fl_str_mv |
Instituto de Ciências Biológicas - ICB (RG) |
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Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
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