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 | Acesso ao texto completo restrito à biblioteca da Embrapa Rondônia. Para informações adicionais entre em contato com cpafro.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Rondônia. |
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Data corrente: |
26/02/2018 |
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Data da última atualização: |
07/03/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
WADT, L. H. de O.; FAUSTINO, C. L.; STAUDHAMMER, C. L.; KAINER, K. A.; EVANGELISTA, J. S. |
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Afiliação: |
LUCIA HELENA DE OLIVEIRA WADT, CPAF-Rondonia; Camila Lima Faustino, UFAC; Christina Lynn Staudhammer, University of Alabama; Karen A. Kainer, University of Florida; Joziane Silva Evangelista, Bolsista, Gordon and Betty Moore Foundation. |
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Título: |
Primary and secondary dispersal of Bertholletia excelsa: Implications for sustainable harvests. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Forest Ecology and Management, v. 415?416, p. 98-105, maio, 2018. |
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Idioma: |
Inglês |
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Conteúdo: |
Our study tracked intact whole fruits of the giant, large-seeded tropical tree Bertholletia excelsa for the first time during primary (fruitfall) and secondary mammalian fruit dispersal. The scatterhoarding Dasyprocta spp. is particularly important for B. excelsa, because it disperses and often buries seeds into spatially-scattered caches, facilitating seed germination and early seedling establishment. We asked: (1) Given a short and synchronous fruiting period, what patterns of primary and secondary fruit dispersal emerge? (2) Do rainfall and local vegetation affect dispersal? We monitored date of fruitfall and condition (visibly untouched, gnawed open with some seeds removed, or gnawed, but unopened) of individual fruits from 20 trees over a ∼ 20 ha area, sequentially visiting each study tree on average every 3?4 days. We evaluated potential influences of rainfall and subcanopy vegetation (arboreal, liana, bamboo or herbaceous) on dispersal in four 10 m2 plots established under each tree crown. As expected, primary dispersal was fairly synchronous over an approximately 3-month period. Amount of rainfall in the 5 days previous to fruitfall was the best predictor of primary dispersal. Monitoring revealed that while the 6855 observed fruits were falling, scatterhoarders were removing some to outside the projection of the tree crown (4.1%) and opening a much smaller proportion (0.5%) under mother trees. Approximately one quarter of fruit opening or removal occurred within 5 days of fruitfall. More fruits were opened or removed when subcanopy vegetation had higher bamboo density or lower densities of saplings and trees ? favorable microenvironments where rodents can gnaw fruits while remaining relatively hidden. Humans directly compete with native dispersers/predators for B. excelsa?s seeds traded internationally as Brazil nut, and thus timing and intensity of harvests following fruitfall determines availability of this resource for dispersers. By mid-January when human harvesting typically begins in our study site, 94% of fruits had fallen from the tall trees, and our continuous quantification of disperser activity revealed that 197 fruits (2.9%) or 3341 seeds (assuming an average 17 seeds per fruit) were consumed or dispersed. Thus, human harvesters could safely collect and dispersers had weeks of unlimited resource access. Considering our dispersal findings, cumulative research results and collective understanding of the Bertholletia-Dasyprocta-Homo sapiens interactions, harvests in our study site and region boost incomes and likely do not threaten Brazil nut recruitment or maintenance of agouti populations. MenosOur study tracked intact whole fruits of the giant, large-seeded tropical tree Bertholletia excelsa for the first time during primary (fruitfall) and secondary mammalian fruit dispersal. The scatterhoarding Dasyprocta spp. is particularly important for B. excelsa, because it disperses and often buries seeds into spatially-scattered caches, facilitating seed germination and early seedling establishment. We asked: (1) Given a short and synchronous fruiting period, what patterns of primary and secondary fruit dispersal emerge? (2) Do rainfall and local vegetation affect dispersal? We monitored date of fruitfall and condition (visibly untouched, gnawed open with some seeds removed, or gnawed, but unopened) of individual fruits from 20 trees over a ∼ 20 ha area, sequentially visiting each study tree on average every 3?4 days. We evaluated potential influences of rainfall and subcanopy vegetation (arboreal, liana, bamboo or herbaceous) on dispersal in four 10 m2 plots established under each tree crown. As expected, primary dispersal was fairly synchronous over an approximately 3-month period. Amount of rainfall in the 5 days previous to fruitfall was the best predictor of primary dispersal. Monitoring revealed that while the 6855 observed fruits were falling, scatterhoarders were removing some to outside the projection of the tree crown (4.1%) and opening a much smaller proportion (0.5%) under mother trees. Approximately one quarter of fruit opening or removal occurred withi... Mostrar Tudo |
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Palavras-Chave: |
Brazil nut; Castanha do brasil; Frugivory; Mamíferos dispersores; Mammalian dispersers; Predador de sementes; Scatterhoard; Seed predator. |
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Thesagro: |
Castanha do Para. |
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Thesaurus Nal: |
Dasyprocta. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 03524naa a2200289 a 4500
001 2088183
005 2022-03-07
008 2018 bl uuuu u00u1 u #d
100 1 $aWADT, L. H. de O.
245 $aPrimary and secondary dispersal of Bertholletia excelsa$bImplications for sustainable harvests.$h[electronic resource]
260 $c2018
520 $aOur study tracked intact whole fruits of the giant, large-seeded tropical tree Bertholletia excelsa for the first time during primary (fruitfall) and secondary mammalian fruit dispersal. The scatterhoarding Dasyprocta spp. is particularly important for B. excelsa, because it disperses and often buries seeds into spatially-scattered caches, facilitating seed germination and early seedling establishment. We asked: (1) Given a short and synchronous fruiting period, what patterns of primary and secondary fruit dispersal emerge? (2) Do rainfall and local vegetation affect dispersal? We monitored date of fruitfall and condition (visibly untouched, gnawed open with some seeds removed, or gnawed, but unopened) of individual fruits from 20 trees over a ∼ 20 ha area, sequentially visiting each study tree on average every 3?4 days. We evaluated potential influences of rainfall and subcanopy vegetation (arboreal, liana, bamboo or herbaceous) on dispersal in four 10 m2 plots established under each tree crown. As expected, primary dispersal was fairly synchronous over an approximately 3-month period. Amount of rainfall in the 5 days previous to fruitfall was the best predictor of primary dispersal. Monitoring revealed that while the 6855 observed fruits were falling, scatterhoarders were removing some to outside the projection of the tree crown (4.1%) and opening a much smaller proportion (0.5%) under mother trees. Approximately one quarter of fruit opening or removal occurred within 5 days of fruitfall. More fruits were opened or removed when subcanopy vegetation had higher bamboo density or lower densities of saplings and trees ? favorable microenvironments where rodents can gnaw fruits while remaining relatively hidden. Humans directly compete with native dispersers/predators for B. excelsa?s seeds traded internationally as Brazil nut, and thus timing and intensity of harvests following fruitfall determines availability of this resource for dispersers. By mid-January when human harvesting typically begins in our study site, 94% of fruits had fallen from the tall trees, and our continuous quantification of disperser activity revealed that 197 fruits (2.9%) or 3341 seeds (assuming an average 17 seeds per fruit) were consumed or dispersed. Thus, human harvesters could safely collect and dispersers had weeks of unlimited resource access. Considering our dispersal findings, cumulative research results and collective understanding of the Bertholletia-Dasyprocta-Homo sapiens interactions, harvests in our study site and region boost incomes and likely do not threaten Brazil nut recruitment or maintenance of agouti populations.
650 $aDasyprocta
650 $aCastanha do Para
653 $aBrazil nut
653 $aCastanha do brasil
653 $aFrugivory
653 $aMamíferos dispersores
653 $aMammalian dispersers
653 $aPredador de sementes
653 $aScatterhoard
653 $aSeed predator
700 1 $aFAUSTINO, C. L.
700 1 $aSTAUDHAMMER, C. L.
700 1 $aKAINER, K. A.
700 1 $aEVANGELISTA, J. S.
773 $tForest Ecology and Management$gv. 415?416, p. 98-105, maio, 2018.
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Registro original: |
Embrapa Rondônia (CPAF-RO) |
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Biblioteca |
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Tipo/Formato |
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| Registros recuperados : 309 | |
| 181. |  | GUARINO, E. de S. G.; GESSNER, C. M.; WADT, L. H. de O.; FONSECA, F. L. da; RAPOSO, A. Estrutura etária e espacial de uma população natural de Carapa guianensis Aubl. (Meliaceae) na Amazônia Sul Ocidental. Scientia Forestalis, Piracicaba, v. 42, n. 101, p.91-99, mar. 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Acre. |
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| 182. | | LACERDA, C. M. B. de; BOUFLEUER, N. T.; WADT, L. H. de O.; GANDARA, F. B.; KAGEYAMA, P. Y. Estrutura populacional de Euterpe precatoria (açaí) Mart.: subsídio para o manejo da espécie no Seringal Caquetá - Acre. In: CONGRESSO NACIONAL DE BOTÂNICA, 53.; REUNIÃO NORDESTINA DE BOTÂNICA, 25., Recife. Biodiversidade, conservação e uso sustentável da flora brasileira: resumos. Recife: Sociedade Botânica do Brasil: UFRPE: UFPE, 2002. p. 219. R 0734.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| 183. | | SILVA, S. M. M.; AZEVEDO, V. R.; RIBAS, L. A.; WADT, L. H. de O.; MESQUITA, A. G. G. Estrutura populacional de jatobá em florestas manejadas na Amazônia Sul-Ocidental. In: CONGRESSO DE ECOLOGIA DO BRASIL, 9.; CONGRESSO LATINO AMERICANO DE ECOLOGIA, 3., 2009, São Lourenço. Ecologia e o futuro da biosfera: anais. São Paulo: SEB: Instituto de Biociências, 2009. 2 p.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| 184. | | GUARINO, E. de S. G.; GESSNER, C. M.; WADT, L. H. de O.; FONSECA, F. L. da; RAPOSO, A. Estrutura de uma população natural de Carapa guianensis (Meliaceae). In: CONGRESSO NACIONAL DE BOTÂNICA, 64.; ENCONTRO REGIONAL DE BOTANICOS MG, BA E ES, 23., 2013, Belo Horizonte. Anais... Belo Horizonte: SBB, 2013.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| 186. | | WADT, L. H. de O.; FIGUEIREDO, E. O.; PEREIRA, R. de C. A.; PEREIRA, N. W. V. Forest resources with economic potential in Extractive Reserve Chico Mendes, Acre, Brazil. In: WORKING FOREST IN THE TROPICS, 2002, Gainesville, Florida. Conservation through sustainable management: abstract book and program. Gainesville: University of Florida, 2002. p. 101.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| 187. | | EVANGELISTA, J. S.; CORREIA, M. F.; REIS, S. F. dos; FONSECA, F. L. da; WADT, L. H. de O. Comportamento fenológico de Bertholletia excelsa Bonpl. e Carapa guianensis Aubl. durante oito anos, na Amazônia Sul-Ocidental. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA PARA O PROGRESSO DA CIÊNCIA, 66., 2014, Rio Branco. Anais... Rio Branco: SBPC, 2014. 2 p.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| 188. | | SUJII, P. S.; LOPES, J. P. do R.; CIAMPI, A. Y.; WADT, L. H. de O.; AZEVEDO, V. C. R. Diversidade genética de uma população de Manilkara huberi sob manejo na floresta nacional do Tapajós, PA. In: SIMPÓSIO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2008, Brasília, DF. Anais... Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia: Fundação de Apoio à Pesquisa Científica e Tecnológica - FUNCREDI, 2008. p.199.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 189. | | SUJII, P. S.; LOPES, J. P. do R.; CIAMPI, A. Y.; WADT, L. H. de O.; AZEVEDO, V. C. R. Diversidade genética de uma população de Manilkara huberi sob manejo na Floresta Nacional do Tapajós, Pará. In: SIMPÓSIO BRASILEIRO DE RECURSOS GENÉTICOS, 2., 2008, Brasília, DF. Anais... Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2008. p. 199.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| 190. | | SOARES, G. E. C.; WADT, L. H. de O.; SILVA, T. C. M. da; ROCHA, R. B. Dinâmica de brotação de clones-copa de castanheira-da-amazônia. In: ENCONTRO DE INICIAÇÃO À PESQUISA, 13.; ENCONTRO DE PÓS-GRADUAÇÃO DA EMBRAPA RONDÔNIA, 8., 2023, Porto Velho. Inovações Metodológicas para Pesquisa Agropecuária: Anais. Porto Velho: Embrapa Rondônia, 2023. p. 18-20. (Embrapa Rondônia. Eventos Técnicos & Científicos, 01).| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Rondônia. |
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| 191. | | SILVA, M. C.; FONSECA, F. L. da; WADT, L. H. de O.; RAPOSO, A.; MIRANDA, E. M. de. O gênero Uncaria: uma visão ecológica, econômica e etnobotânica para o Acre. In: SIVIERO, A.; MING, L. C.; SILVEIRA, M.; DALY, D. C.; WALLACE, R. H. (org.). Etnobotânica e botânica econômica do Acre. Rio Branco, AC: Edufac, 2016. cap. 12, p. 186-196.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Acre. |
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| 192. | | KLIMAS, C. A.; KAINER, K. A.; WADT, L. H. de O.; AZEVEDO, V. R.; CORREIA, M. F. Produção de sementes e regeneração de Carapa guianensis em dois ambientes de floresta primária na Amazônia, estado do Acre nos anos de 2004 a 2007. In: SEMINÁRIO ANUAL DE COOPERAÇÃO UFAC/UF, 6., 2008, Rio Branco. Parcerias em pesquisa e pós-graduação: anais. Rio Branco: Ufac; University of Florida, 2008. p. 139. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| 194. | | MARTINS, K.; SILVA, M. das G. C. da; RUIZ, R. C.; ARAÚJO, E. A. de; WADT, L. H. de O. Produção de oleorresina de copaíba (Copaifera spp.) no Acre. In: SEMINÁRIO DO PROJETO KAMUKAIA, 1., 2008, Rio Branco. Manejo sustentável de produtos florestais não-madeireiros na Amazônia: anais. Rio Branco, AC: Embrapa Acre, 2008. p. 131-141. Editora: Lúcia Helena de Oliveira Wadt.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| 198. | | WADT, L. H. de O.; GUEDES, M. C.; TONINI, H.; KLIMAS, C.; CORREIA, M. F.; KAINER, K. Population structure and seed production potencial of Carapa guianensis (Aubl.), in Amazonia. In: WORLD FORESTRY CONGRESS, 13., 2009, Buenos Aires. Forests in development: a vital balance: abstracts. Wellinthon: FAO, 2009. 1 p.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| 199. | | RIGAMONTE-AZEVEDO, V.; WADT, L. H. de O.; KLIMAS, C. A.; CORREIA, M. F.; SILVA, S. M. M. Recrutamento de plântulas de andiroba (Carapa guianensis Aublet.) em uma floresta no sudoeste da Amazônia. In: CONGRESSO NACIONAL DE BOTÂNICA, 61., 2010, Manaus. Diversidade vegetal brasileira: conhecimento, conservação e uso: anais. Manaus: SBB, 2010. 1 p. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| Registros recuperados : 309 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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