Estrutura e riqueza de hepáticas (Marchantiophyta) epifíticas em áreas fragmentadas de Cerrado com borda natural e antrópica
Ano de defesa: | 2010 |
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Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal de Goiás
|
Programa de Pós-Graduação: |
Mestrado em Ecologia e Evolução
|
Departamento: |
Ciências Biológicas - Biologia
|
País: |
BR
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://repositorio.bc.ufg.br/tede/handle/tde/2567 |
Resumo: | The damage caused by the proliferation of edge in forest cover, referred to as edge effects are extensive, may occur over large spatial scales influencing species composition, structure and ecological processes in boundaries of ecosystems. However, studies have shown highly variable response patterns of the taxonomic group studied in relation to the landscape. In this context, bryophytes are an ideal group for assessing the impacts of habitat fragmentation because of their sensitivity to changes in microclimate resulting from the loss and degradation of habitats. This study aimed to assess how the communities from epiphytes liverworts (Marchantiophyta) respond to forest edges originated of anthropogenic fragmentation and the natural edges in the grassland-forest transitions in the Cerrado. The study areas are located in the Parque Estadual da Serra de Caldas Novas and in surroundings, including Caldas Novas and Rio Quente cities, state of Goiás. We sampled three habitat types: (1) forest valleys on the slopes of the mountain with abrupt transitions to rocky fields, (2) edge (0 to 10 m) and (3) interior (100 to 110 m) of semideciduous forest fragments surrounded by a matrix of grass. These were the three treatments considered in the analysis, designated for: BN (natural edge), BA (anthropogenic edge) and IF (interior of the fragment). Four plots (10´10m) were randomly delimited along transects (10´200m) for each treatment in each area. For the sampling in the plots, were selected all trees with perimeter at breast height (PAP) ≥ 20 cm and with minimum coverage of bryophytes of 300cm2. For the quantitative survey of liverworts the interception line method was utilized. Between vegetation parameters, the number of individual trees had positive relationship with richness and abundance in liverworts, whereas basal area had positive relationship with coverage demonstrating the importance of these parameters in liverworts community struture. The richness of liverworts was higher in natural and anthropogenic edges in relation to the interior of the fragments demonstrating that the type of edges do not seem to influence the richness of the liverworts and this increased richness at the edges may be related with the intermediate disturbance hypothesis. Coverage of liverworts was higher in BN than BA, while the BN had distinct floristic composition of BA and IF, that may reflect the environmental peculiarities (moisture, temperature and solar radiation). The evaluation of edge effects on life forms and preference of habits shows some important trends to understand the responses of the liverworts, mainly due to increased frequency of pendant life-forms with low tolerance to desiccation and higher frequency of epiphytes shadow in natural edges. This indicates that the use of functional groups in monitoring the effects of fragmentation can provide a large generalization for the evaluation of responses the liverworts. |
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GUILHERME, Frederico Augusto Guimaraeshttp://lattes.cnpq.br/6514433986706275http://lattes.cnpq.br/6810453803348649ASSAD, Lailah Luvizoto2014-07-29T16:21:18Z2012-08-312010-06-08ASSAD, Lailah Luvizoto. Structure and richness of the epiphytic liverworts (Marchantiophyta) in fragmented areas of Cerrado with natural edge and anthropogenic. 2010. 78 f. Dissertação (Mestrado em Ciências Biológicas - Biologia) - Universidade Federal de Goiás, Goiânia, 2010.http://repositorio.bc.ufg.br/tede/handle/tde/2567The damage caused by the proliferation of edge in forest cover, referred to as edge effects are extensive, may occur over large spatial scales influencing species composition, structure and ecological processes in boundaries of ecosystems. However, studies have shown highly variable response patterns of the taxonomic group studied in relation to the landscape. In this context, bryophytes are an ideal group for assessing the impacts of habitat fragmentation because of their sensitivity to changes in microclimate resulting from the loss and degradation of habitats. This study aimed to assess how the communities from epiphytes liverworts (Marchantiophyta) respond to forest edges originated of anthropogenic fragmentation and the natural edges in the grassland-forest transitions in the Cerrado. The study areas are located in the Parque Estadual da Serra de Caldas Novas and in surroundings, including Caldas Novas and Rio Quente cities, state of Goiás. We sampled three habitat types: (1) forest valleys on the slopes of the mountain with abrupt transitions to rocky fields, (2) edge (0 to 10 m) and (3) interior (100 to 110 m) of semideciduous forest fragments surrounded by a matrix of grass. These were the three treatments considered in the analysis, designated for: BN (natural edge), BA (anthropogenic edge) and IF (interior of the fragment). Four plots (10´10m) were randomly delimited along transects (10´200m) for each treatment in each area. For the sampling in the plots, were selected all trees with perimeter at breast height (PAP) ≥ 20 cm and with minimum coverage of bryophytes of 300cm2. For the quantitative survey of liverworts the interception line method was utilized. Between vegetation parameters, the number of individual trees had positive relationship with richness and abundance in liverworts, whereas basal area had positive relationship with coverage demonstrating the importance of these parameters in liverworts community struture. The richness of liverworts was higher in natural and anthropogenic edges in relation to the interior of the fragments demonstrating that the type of edges do not seem to influence the richness of the liverworts and this increased richness at the edges may be related with the intermediate disturbance hypothesis. Coverage of liverworts was higher in BN than BA, while the BN had distinct floristic composition of BA and IF, that may reflect the environmental peculiarities (moisture, temperature and solar radiation). The evaluation of edge effects on life forms and preference of habits shows some important trends to understand the responses of the liverworts, mainly due to increased frequency of pendant life-forms with low tolerance to desiccation and higher frequency of epiphytes shadow in natural edges. This indicates that the use of functional groups in monitoring the effects of fragmentation can provide a large generalization for the evaluation of responses the liverworts.Os danos causados pela proliferação de bordas na cobertura florestal, geralmente designados efeitos de borda, são extensos, podendo ocorrer através de grandes escalas espaciais e influenciar na composição de espécies, estrutura e processos ecológicos nos ecossistemas limítrofes. Apesar disso, os estudos têm demonstrado padrões de respostas altamente variáveis, sendo que as respostas dos organismos podem variar tanto em relação à paisagem quanto ao grupo taxonômico estudado. Neste contexto, as briófitas constituem um grupo ideal para a avaliação dos impactos da fragmentação, devido à sua sensibilidade às alterações microclimáticas resultantes da perda e degradação de habitats. Esse estudo teve o objetivo de avaliar como as comunidades de hepáticas (Marchantiophyta) epífitas respondem às bordas florestais proporcionadas antropicamente e às bordas naturais nas transições campo-floresta no bioma Cerrado. As áreas de estudo estão localizadas no Parque Estadual da Serra de Caldas Novas e no seu entorno, compreendendo as cidades de Caldas Novas e Rio Quente, estado de Goiás. Foram amostrados três tipos de habitats: (1) enclaves florestais nas encostas da serra, com transições abruptas para campos rupestres; (2) borda (0 a 10 metros) e (3) interior (100 a 110 metros) de fragmentos de florestas estacionais circundados por matriz de pastagem. Estes foram os três tratamentos considerados na análise, designados por: BN (borda natural), BA (borda antrópica) e IF (interior do fragmento). Quatro parcelas de 10´10m foram plotadas aleatoriamente ao longo de transectos de 10´200m para cada tratamento em cada área. Para a amostragem nas parcelas, foram selecionadas todas as árvores com perímetro à altura do peito (PAP) ≥ 20 cm e com cobertura mínima de briófitas de 300cm2. Para o levantamento quantitativo das hepáticas foi adotado o método de interceptação de linha. Entre os parâmetros da vegetação, o número de indivíduos arbóreos teve relação positiva com a riqueza e abundância de hepáticas, enquanto que a área basal teve relação positiva com a cobertura, o que demonstra a importância destes parâmetros na estruturação das comunidades de hepáticas. A riqueza de hepáticas foi maior nas bordas naturais e antrópicas em relação ao interior dos fragmentos, o que demonstra que o tipo de borda não parece influenciar na riqueza de hepáticas e esta maior riqueza nas bordas pode estar relacionada à hipótese do distúrbio intermediário. A cobertura de hepáticas foi maior em BN do que em BA, enquanto que as BN apresentaram composição florística distinta da BA e IF, o que pode ser reflexo das peculiaridades (umidade, temperatura e radiação solar) neste ambiente. A avaliação dos efeitos de borda sobre as formas de vida e hábitos de preferência mostra algumas tendências importantes para a compreensão das respostas das hepáticas, principalmente devido a maior frequência de forma de vida pendente com baixa tolerância à dessecação e maior freqüência de epífitas de sombra nas bordas naturais. Isso indica que a utilização de grupos funcionais no monitoramento dos efeitos da fragmentação pode proporcionar uma maior generalização para a avaliação das respostas das hepáticas.Made available in DSpace on 2014-07-29T16:21:18Z (GMT). No. of bitstreams: 1 Dissertacao Lailah Luvizoto Assad.pdf: 2534568 bytes, checksum: ab2279eb387d185161589f97b4d1fb46 (MD5) Previous issue date: 2010-06-08application/pdfhttp://repositorio.bc.ufg.br/TEDE/retrieve/5513/Dissertacao%20Lailah%20Luvizoto%20Assad.pdf.jpgporUniversidade Federal de GoiásMestrado em Ecologia e EvoluçãoUFGBRCiências Biológicas - BiologiaEfeito de bordafragmentação de habitatbriófitasCerradoGoiásEdge effecthabitat fragmentationbryophytesCerradoGoiásCNPQ::CIENCIAS BIOLOGICAS::ECOLOGIAEstrutura e riqueza de hepáticas (Marchantiophyta) epifíticas em áreas fragmentadas de Cerrado com borda natural e antrópicaEstrutura e riqueza de hepáticas (Marchantiophyta) epifíticas em áreas fragmentadas de Cerrado com borda natural e antrópicaStructure and richness of the epiphytic liverworts (Marchantiophyta) in fragmented areas of Cerrado with natural edge and anthropogenicStructure and richness of the epiphytic liverworts (Marchantiophyta) in fragmented areas of Cerrado with natural edge and anthropogenicinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFGinstname:Universidade Federal de Goiás (UFG)instacron:UFGORIGINALDissertacao Lailah Luvizoto Assad.pdfapplication/pdf2534568http://repositorio.bc.ufg.br/tede/bitstreams/0a78d263-05cc-4659-8596-6c0fbf72a950/downloadab2279eb387d185161589f97b4d1fb46MD51THUMBNAILDissertacao Lailah Luvizoto Assad.pdf.jpgDissertacao Lailah Luvizoto Assad.pdf.jpgGenerated Thumbnailimage/jpeg2577http://repositorio.bc.ufg.br/tede/bitstreams/a8083246-070f-41b6-a8a6-e7d65206389b/download23548fb441e83120b44c03f2994b7b3eMD52tde/25672014-07-30 03:21:42.419open.accessoai:repositorio.bc.ufg.br:tde/2567http://repositorio.bc.ufg.br/tedeRepositório InstitucionalPUBhttp://repositorio.bc.ufg.br/oai/requesttasesdissertacoes.bc@ufg.bropendoar:2014-07-30T06:21:42Repositório Institucional da UFG - Universidade Federal de Goiás (UFG)false |
dc.title.por.fl_str_mv |
Estrutura e riqueza de hepáticas (Marchantiophyta) epifíticas em áreas fragmentadas de Cerrado com borda natural e antrópica Estrutura e riqueza de hepáticas (Marchantiophyta) epifíticas em áreas fragmentadas de Cerrado com borda natural e antrópica |
dc.title.alternative.eng.fl_str_mv |
Structure and richness of the epiphytic liverworts (Marchantiophyta) in fragmented areas of Cerrado with natural edge and anthropogenic Structure and richness of the epiphytic liverworts (Marchantiophyta) in fragmented areas of Cerrado with natural edge and anthropogenic |
title |
Estrutura e riqueza de hepáticas (Marchantiophyta) epifíticas em áreas fragmentadas de Cerrado com borda natural e antrópica |
spellingShingle |
Estrutura e riqueza de hepáticas (Marchantiophyta) epifíticas em áreas fragmentadas de Cerrado com borda natural e antrópica ASSAD, Lailah Luvizoto Efeito de borda fragmentação de habitat briófitas Cerrado Goiás Edge effect habitat fragmentation bryophytes Cerrado Goiás CNPQ::CIENCIAS BIOLOGICAS::ECOLOGIA |
title_short |
Estrutura e riqueza de hepáticas (Marchantiophyta) epifíticas em áreas fragmentadas de Cerrado com borda natural e antrópica |
title_full |
Estrutura e riqueza de hepáticas (Marchantiophyta) epifíticas em áreas fragmentadas de Cerrado com borda natural e antrópica |
title_fullStr |
Estrutura e riqueza de hepáticas (Marchantiophyta) epifíticas em áreas fragmentadas de Cerrado com borda natural e antrópica |
title_full_unstemmed |
Estrutura e riqueza de hepáticas (Marchantiophyta) epifíticas em áreas fragmentadas de Cerrado com borda natural e antrópica |
title_sort |
Estrutura e riqueza de hepáticas (Marchantiophyta) epifíticas em áreas fragmentadas de Cerrado com borda natural e antrópica |
author |
ASSAD, Lailah Luvizoto |
author_facet |
ASSAD, Lailah Luvizoto |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
GUILHERME, Frederico Augusto Guimaraes |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/6514433986706275 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/6810453803348649 |
dc.contributor.author.fl_str_mv |
ASSAD, Lailah Luvizoto |
contributor_str_mv |
GUILHERME, Frederico Augusto Guimaraes |
dc.subject.por.fl_str_mv |
Efeito de borda fragmentação de habitat briófitas Cerrado Goiás |
topic |
Efeito de borda fragmentação de habitat briófitas Cerrado Goiás Edge effect habitat fragmentation bryophytes Cerrado Goiás CNPQ::CIENCIAS BIOLOGICAS::ECOLOGIA |
dc.subject.eng.fl_str_mv |
Edge effect habitat fragmentation bryophytes Cerrado Goiás |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS BIOLOGICAS::ECOLOGIA |
description |
The damage caused by the proliferation of edge in forest cover, referred to as edge effects are extensive, may occur over large spatial scales influencing species composition, structure and ecological processes in boundaries of ecosystems. However, studies have shown highly variable response patterns of the taxonomic group studied in relation to the landscape. In this context, bryophytes are an ideal group for assessing the impacts of habitat fragmentation because of their sensitivity to changes in microclimate resulting from the loss and degradation of habitats. This study aimed to assess how the communities from epiphytes liverworts (Marchantiophyta) respond to forest edges originated of anthropogenic fragmentation and the natural edges in the grassland-forest transitions in the Cerrado. The study areas are located in the Parque Estadual da Serra de Caldas Novas and in surroundings, including Caldas Novas and Rio Quente cities, state of Goiás. We sampled three habitat types: (1) forest valleys on the slopes of the mountain with abrupt transitions to rocky fields, (2) edge (0 to 10 m) and (3) interior (100 to 110 m) of semideciduous forest fragments surrounded by a matrix of grass. These were the three treatments considered in the analysis, designated for: BN (natural edge), BA (anthropogenic edge) and IF (interior of the fragment). Four plots (10´10m) were randomly delimited along transects (10´200m) for each treatment in each area. For the sampling in the plots, were selected all trees with perimeter at breast height (PAP) ≥ 20 cm and with minimum coverage of bryophytes of 300cm2. For the quantitative survey of liverworts the interception line method was utilized. Between vegetation parameters, the number of individual trees had positive relationship with richness and abundance in liverworts, whereas basal area had positive relationship with coverage demonstrating the importance of these parameters in liverworts community struture. The richness of liverworts was higher in natural and anthropogenic edges in relation to the interior of the fragments demonstrating that the type of edges do not seem to influence the richness of the liverworts and this increased richness at the edges may be related with the intermediate disturbance hypothesis. Coverage of liverworts was higher in BN than BA, while the BN had distinct floristic composition of BA and IF, that may reflect the environmental peculiarities (moisture, temperature and solar radiation). The evaluation of edge effects on life forms and preference of habits shows some important trends to understand the responses of the liverworts, mainly due to increased frequency of pendant life-forms with low tolerance to desiccation and higher frequency of epiphytes shadow in natural edges. This indicates that the use of functional groups in monitoring the effects of fragmentation can provide a large generalization for the evaluation of responses the liverworts. |
publishDate |
2010 |
dc.date.issued.fl_str_mv |
2010-06-08 |
dc.date.available.fl_str_mv |
2012-08-31 |
dc.date.accessioned.fl_str_mv |
2014-07-29T16:21:18Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/masterThesis |
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dc.identifier.citation.fl_str_mv |
ASSAD, Lailah Luvizoto. Structure and richness of the epiphytic liverworts (Marchantiophyta) in fragmented areas of Cerrado with natural edge and anthropogenic. 2010. 78 f. Dissertação (Mestrado em Ciências Biológicas - Biologia) - Universidade Federal de Goiás, Goiânia, 2010. |
dc.identifier.uri.fl_str_mv |
http://repositorio.bc.ufg.br/tede/handle/tde/2567 |
identifier_str_mv |
ASSAD, Lailah Luvizoto. Structure and richness of the epiphytic liverworts (Marchantiophyta) in fragmented areas of Cerrado with natural edge and anthropogenic. 2010. 78 f. Dissertação (Mestrado em Ciências Biológicas - Biologia) - Universidade Federal de Goiás, Goiânia, 2010. |
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http://repositorio.bc.ufg.br/tede/handle/tde/2567 |
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por |
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UFG |
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BR |
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Ciências Biológicas - Biologia |
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Universidade Federal de Goiás |
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