O papel da limitação de sementes e da limitação no estabelecimento no recrutamento de plantas do cerrado

Detalhes bibliográficos
Autor(a) principal: Silva, Vanessa Mariano da
Data de Publicação: 2015
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Repositório Institucional da UFSCAR
Texto Completo: https://repositorio.ufscar.br/handle/ufscar/8368
Resumo: Plant recruitment can be constrained by seed and establishment limitation and these processes can affect community species composition and diversity. In Neotropical savannas the relative importance of these processes for plant regeneration are unclear because of the scarcity of studies. The aim of this study was to evaluate the importance of seed and establishment limitation to plant recruitment on cerrado savanna in Itirapina, southeast Brazil (22°12´S, 47°52´W). We spread 49 seed traps in a 0.64-ha plot and monitored seed rain monthly for a year, and also conducted seed addition experiments. Seed production presented a peak in rainy season, with zoochoric and anemochoric species producing seeds mainly in rainy and dry season respectively. Our study indicates a strong influence of seed limitation on recruitment, with most seed rain species presenting seed limitation values higher than 65%. Only 23% of woody species in the plot had at least one seed trapped. Seed and source limitation was negative related to adult abundance, indicating that the increase of seed sources enhances the number of suitable sites reached by seeds. There was no relation between seed, source and dispersal limitation and plant life form, dispersal syndrome and seed mass. Seed addition was unable to increase seedling regeneration in the four species tested, which presented high values of establishment limitation. Our study shows that Neotropical savanna plants recruitment is restricted by seed and establishment limitation and highlights the role of seed production and dispersal to colonization of new sites.
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spelling Silva, Vanessa Mariano daChristianini, Alexander Vicentehttp://lattes.cnpq.br/2295622727813765http://lattes.cnpq.br/4842185902515992898d1c5b-4e77-4c92-b741-09b94a8e3cbe2017-01-12T17:20:15Z2017-01-12T17:20:15Z2015-12-18SILVA, Vanessa Mariano da. O papel da limitação de sementes e da limitação no estabelecimento no recrutamento de plantas do cerrado. 2015. Dissertação (Mestrado em Diversidade Biológica e Conservação) – Universidade Federal de São Carlos, Sorocaba, 2015. Disponível em: https://repositorio.ufscar.br/handle/ufscar/8368.https://repositorio.ufscar.br/handle/ufscar/8368Plant recruitment can be constrained by seed and establishment limitation and these processes can affect community species composition and diversity. In Neotropical savannas the relative importance of these processes for plant regeneration are unclear because of the scarcity of studies. The aim of this study was to evaluate the importance of seed and establishment limitation to plant recruitment on cerrado savanna in Itirapina, southeast Brazil (22°12´S, 47°52´W). We spread 49 seed traps in a 0.64-ha plot and monitored seed rain monthly for a year, and also conducted seed addition experiments. Seed production presented a peak in rainy season, with zoochoric and anemochoric species producing seeds mainly in rainy and dry season respectively. Our study indicates a strong influence of seed limitation on recruitment, with most seed rain species presenting seed limitation values higher than 65%. Only 23% of woody species in the plot had at least one seed trapped. Seed and source limitation was negative related to adult abundance, indicating that the increase of seed sources enhances the number of suitable sites reached by seeds. There was no relation between seed, source and dispersal limitation and plant life form, dispersal syndrome and seed mass. Seed addition was unable to increase seedling regeneration in the four species tested, which presented high values of establishment limitation. Our study shows that Neotropical savanna plants recruitment is restricted by seed and establishment limitation and highlights the role of seed production and dispersal to colonization of new sites.O recrutamento de plantas pode ser restringido pelas limitações de sementes e no estabelecimento, os quais afetam a composição e diversidade de uma comunidade. Em savanas neotropicais a importância relativa desses processos ainda não é clara em decorrência da falta de estudos. O objetivo desse estudo foi avaliar a importância das limitações de sementes e no estabelecimento para o recrutamento de uma comunidade de cerrado no sudeste do Brasil. Foram posicionados 49 coletores de sementes em uma parcela de 0,64 ha e a chuva de sementes foi monitorada mensalmente durante um ano. Além disso, foram realizados experimentos de adição de sementes. A produção de sementes apresentou um pico durante a estação chuvosa, sendo que as espécies zoocóricas produziram principalmente durante a estação chuvosa e as anomocóricas, durante a estação seca. Houve uma influência significativa da limitação de sementes no recrutamento, sendo que a maioria das espécies presentes na chuva de sementes apresentou valores dessa limitação maiores que 65%. Apenas 23% das espécies arbustivo-arbóreas presentes na parcela tiveram, pelo menos, uma semente coletada. As limitações de sementes e na fonte apresentaram uma relação negativa com o número de adultos, indicando que o aumento de fontes de sementes eleva o número de locais atingidos por sementes. Não houve relação entre limitações de sementes, na fonte e na dispersão com forma de vida, síndrome de dispersão e peso da semente. A adição de sementes não aumentou a regeneração de plântulas das quatro espécies testadas, as quais apresentaram valores elevados de limitação no estabelecimento. O presente estudo indica que o recrutamento de plantas de savanas neotropicais é restringido pelas limitações de sementes e no estabelecimento e ressalta a importância da produção e dispersão de sementes para a colonização de novos locais.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)porUniversidade Federal de São CarlosCâmpus SorocabaPrograma de Pós-Graduação em Diversidade Biológica e Conservação - PPGDBC-SoUFSCarSementes - DispersãoCerradosLimitação na dispersãoPredação de sementesSeeds - DispersalDispersal limitationSeed predationCIENCIAS BIOLOGICAS::ECOLOGIA::ECOLOGIA DE ECOSSISTEMASO papel da limitação de sementes e da limitação no estabelecimento no recrutamento de plantas do cerradoThe role of seed limitation and establishment limitation to recruitment of Cerrado plantsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisOnline600a6448fdb-175f-4d04-8ecb-f6e4c21b90bfinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFSCARinstname:Universidade Federal de São Carlos (UFSCAR)instacron:UFSCARORIGINALSILVA_Vanessa Mariano_2015.pdfSILVA_Vanessa Mariano_2015.pdfapplication/pdf1028554https://repositorio.ufscar.br/bitstream/ufscar/8368/1/SILVA_Vanessa%20Mariano_2015.pdfb983689081dffe8a634db905adc7c152MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81957https://repositorio.ufscar.br/bitstream/ufscar/8368/2/license.txtae0398b6f8b235e40ad82cba6c50031dMD52TEXTSILVA_Vanessa Mariano_2015.pdf.txtSILVA_Vanessa Mariano_2015.pdf.txtExtracted texttext/plain65964https://repositorio.ufscar.br/bitstream/ufscar/8368/3/SILVA_Vanessa%20Mariano_2015.pdf.txt10428c448ba077b4615da5fe63093c54MD53THUMBNAILSILVA_Vanessa Mariano_2015.pdf.jpgSILVA_Vanessa Mariano_2015.pdf.jpgIM Thumbnailimage/jpeg6430https://repositorio.ufscar.br/bitstream/ufscar/8368/4/SILVA_Vanessa%20Mariano_2015.pdf.jpge02eefb5ceb041aff30d186a6c37e074MD54ufscar/83682023-09-18 18:31:05.359oai:repositorio.ufscar.br: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Repositório InstitucionalPUBhttps://repositorio.ufscar.br/oai/requestopendoar:43222023-09-18T18:31:05Repositório Institucional da UFSCAR - Universidade Federal de São Carlos (UFSCAR)false
dc.title.por.fl_str_mv O papel da limitação de sementes e da limitação no estabelecimento no recrutamento de plantas do cerrado
dc.title.alternative.eng.fl_str_mv The role of seed limitation and establishment limitation to recruitment of Cerrado plants
title O papel da limitação de sementes e da limitação no estabelecimento no recrutamento de plantas do cerrado
spellingShingle O papel da limitação de sementes e da limitação no estabelecimento no recrutamento de plantas do cerrado
Silva, Vanessa Mariano da
Sementes - Dispersão
Cerrados
Limitação na dispersão
Predação de sementes
Seeds - Dispersal
Dispersal limitation
Seed predation
CIENCIAS BIOLOGICAS::ECOLOGIA::ECOLOGIA DE ECOSSISTEMAS
title_short O papel da limitação de sementes e da limitação no estabelecimento no recrutamento de plantas do cerrado
title_full O papel da limitação de sementes e da limitação no estabelecimento no recrutamento de plantas do cerrado
title_fullStr O papel da limitação de sementes e da limitação no estabelecimento no recrutamento de plantas do cerrado
title_full_unstemmed O papel da limitação de sementes e da limitação no estabelecimento no recrutamento de plantas do cerrado
title_sort O papel da limitação de sementes e da limitação no estabelecimento no recrutamento de plantas do cerrado
author Silva, Vanessa Mariano da
author_facet Silva, Vanessa Mariano da
author_role author
dc.contributor.authorlattes.por.fl_str_mv http://lattes.cnpq.br/4842185902515992
dc.contributor.author.fl_str_mv Silva, Vanessa Mariano da
dc.contributor.advisor1.fl_str_mv Christianini, Alexander Vicente
dc.contributor.advisor1Lattes.fl_str_mv http://lattes.cnpq.br/2295622727813765
dc.contributor.authorID.fl_str_mv 898d1c5b-4e77-4c92-b741-09b94a8e3cbe
contributor_str_mv Christianini, Alexander Vicente
dc.subject.por.fl_str_mv Sementes - Dispersão
Cerrados
Limitação na dispersão
Predação de sementes
topic Sementes - Dispersão
Cerrados
Limitação na dispersão
Predação de sementes
Seeds - Dispersal
Dispersal limitation
Seed predation
CIENCIAS BIOLOGICAS::ECOLOGIA::ECOLOGIA DE ECOSSISTEMAS
dc.subject.eng.fl_str_mv Seeds - Dispersal
Dispersal limitation
Seed predation
dc.subject.cnpq.fl_str_mv CIENCIAS BIOLOGICAS::ECOLOGIA::ECOLOGIA DE ECOSSISTEMAS
description Plant recruitment can be constrained by seed and establishment limitation and these processes can affect community species composition and diversity. In Neotropical savannas the relative importance of these processes for plant regeneration are unclear because of the scarcity of studies. The aim of this study was to evaluate the importance of seed and establishment limitation to plant recruitment on cerrado savanna in Itirapina, southeast Brazil (22°12´S, 47°52´W). We spread 49 seed traps in a 0.64-ha plot and monitored seed rain monthly for a year, and also conducted seed addition experiments. Seed production presented a peak in rainy season, with zoochoric and anemochoric species producing seeds mainly in rainy and dry season respectively. Our study indicates a strong influence of seed limitation on recruitment, with most seed rain species presenting seed limitation values higher than 65%. Only 23% of woody species in the plot had at least one seed trapped. Seed and source limitation was negative related to adult abundance, indicating that the increase of seed sources enhances the number of suitable sites reached by seeds. There was no relation between seed, source and dispersal limitation and plant life form, dispersal syndrome and seed mass. Seed addition was unable to increase seedling regeneration in the four species tested, which presented high values of establishment limitation. Our study shows that Neotropical savanna plants recruitment is restricted by seed and establishment limitation and highlights the role of seed production and dispersal to colonization of new sites.
publishDate 2015
dc.date.issued.fl_str_mv 2015-12-18
dc.date.accessioned.fl_str_mv 2017-01-12T17:20:15Z
dc.date.available.fl_str_mv 2017-01-12T17:20:15Z
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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dc.identifier.citation.fl_str_mv SILVA, Vanessa Mariano da. O papel da limitação de sementes e da limitação no estabelecimento no recrutamento de plantas do cerrado. 2015. Dissertação (Mestrado em Diversidade Biológica e Conservação) – Universidade Federal de São Carlos, Sorocaba, 2015. Disponível em: https://repositorio.ufscar.br/handle/ufscar/8368.
dc.identifier.uri.fl_str_mv https://repositorio.ufscar.br/handle/ufscar/8368
identifier_str_mv SILVA, Vanessa Mariano da. O papel da limitação de sementes e da limitação no estabelecimento no recrutamento de plantas do cerrado. 2015. Dissertação (Mestrado em Diversidade Biológica e Conservação) – Universidade Federal de São Carlos, Sorocaba, 2015. Disponível em: https://repositorio.ufscar.br/handle/ufscar/8368.
url https://repositorio.ufscar.br/handle/ufscar/8368
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dc.publisher.none.fl_str_mv Universidade Federal de São Carlos
Câmpus Sorocaba
dc.publisher.program.fl_str_mv Programa de Pós-Graduação em Diversidade Biológica e Conservação - PPGDBC-So
dc.publisher.initials.fl_str_mv UFSCar
publisher.none.fl_str_mv Universidade Federal de São Carlos
Câmpus Sorocaba
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