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Registro Completo |
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Biblioteca(s): |
Embrapa Rondônia. |
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Data corrente: |
10/10/2017 |
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Data da última atualização: |
22/01/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BERTWELL, T. D.; KAINER, K. A.; CROPPER JUNIOR, W. P.; STAUDHAMMER, C. L.; WADT, L. H. de O. |
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Afiliação: |
Todd D. Bertwell, University of Florida; Karen A. Kainer, University of Florida; Wendell P. Cropper Jr, University of Florida; Christina L. Staudhammer, University of Alabama; LUCIA HELENA DE OLIVEIRA WADT, CPAF-Rondonia. |
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Título: |
Are Brazil nut populations threatened by fruit harvest? |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Biotropica, v. 50, n. 1, p. 50-59, 2018. |
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DOI: |
10.1111/btp.12505 |
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Idioma: |
Inglês |
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Conteúdo: |
Harvest of Brazil nuts from the large, iconic tree Bertholletia excelsa generates substantial income for smallholders, providing a strong incentive to conserve the mature forests where it grows. Although much previous work has focused on the impact of nut harvest on new seedling recruits into B. excelsa populations, the connection between harvest rates and long-term population stability is still unclear. Moreover, there is additional uncertainty for Brazil nut management in terms of population response to climate change and other anthropogenic influences. We drew on 14 years of research in two sites in Acre, Brazil with different B. excelsa nut harvest intensities (39% and 81%), to produce stochastic and deterministic matrix population models which incorporated parameter uncertainty in vital rates. Adult abundance was projected to remain close to the current observed abundance or higher through the next 50 years. Elasticity analyses revealed that the asymptotic population growth rate (λ) was most sensitive to stasis vital rates in sapling, juvenile, and adult stages. Deterministic transition matrices calculated using diameter growth rates dependent on rainfall yielded average λ values around 1.0 under extreme high, extreme low, and average annual rainfall. While sustained high rates of Brazil nut harvest and climate change could potentially negatively impact B. excelsa populations, changes in human use of the forested landscape are more immediate concern. To reduce the risk of population decline, smallholders and managers of B. excelsa rich forests should focus on conservation of pre-mature and mature individuals. MenosHarvest of Brazil nuts from the large, iconic tree Bertholletia excelsa generates substantial income for smallholders, providing a strong incentive to conserve the mature forests where it grows. Although much previous work has focused on the impact of nut harvest on new seedling recruits into B. excelsa populations, the connection between harvest rates and long-term population stability is still unclear. Moreover, there is additional uncertainty for Brazil nut management in terms of population response to climate change and other anthropogenic influences. We drew on 14 years of research in two sites in Acre, Brazil with different B. excelsa nut harvest intensities (39% and 81%), to produce stochastic and deterministic matrix population models which incorporated parameter uncertainty in vital rates. Adult abundance was projected to remain close to the current observed abundance or higher through the next 50 years. Elasticity analyses revealed that the asymptotic population growth rate (λ) was most sensitive to stasis vital rates in sapling, juvenile, and adult stages. Deterministic transition matrices calculated using diameter growth rates dependent on rainfall yielded average λ values around 1.0 under extreme high, extreme low, and average annual rainfall. While sustained high rates of Brazil nut harvest and climate change could potentially negatively impact B. excelsa populations, changes in human use of the forested landscape are more immediate concern. To reduce... Mostrar Tudo |
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Palavras-Chave: |
Colheita sustentável; Matrix population model; Modelo de população matricial; Rainfall; Sustainable harvest; Tropical forest. |
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Thesagro: |
Bertholletia Excelsa; Floresta Tropical. |
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Thesaurus Nal: |
demography. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/171489/1/Bertwell-et-al-2018-Biotropica.pdf
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Marc: |
LEADER 02488naa a2200289 a 4500
001 2077079
005 2018-01-22
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1111/btp.12505$2DOI
100 1 $aBERTWELL, T. D.
245 $aAre Brazil nut populations threatened by fruit harvest?$h[electronic resource]
260 $c2018
520 $aHarvest of Brazil nuts from the large, iconic tree Bertholletia excelsa generates substantial income for smallholders, providing a strong incentive to conserve the mature forests where it grows. Although much previous work has focused on the impact of nut harvest on new seedling recruits into B. excelsa populations, the connection between harvest rates and long-term population stability is still unclear. Moreover, there is additional uncertainty for Brazil nut management in terms of population response to climate change and other anthropogenic influences. We drew on 14 years of research in two sites in Acre, Brazil with different B. excelsa nut harvest intensities (39% and 81%), to produce stochastic and deterministic matrix population models which incorporated parameter uncertainty in vital rates. Adult abundance was projected to remain close to the current observed abundance or higher through the next 50 years. Elasticity analyses revealed that the asymptotic population growth rate (λ) was most sensitive to stasis vital rates in sapling, juvenile, and adult stages. Deterministic transition matrices calculated using diameter growth rates dependent on rainfall yielded average λ values around 1.0 under extreme high, extreme low, and average annual rainfall. While sustained high rates of Brazil nut harvest and climate change could potentially negatively impact B. excelsa populations, changes in human use of the forested landscape are more immediate concern. To reduce the risk of population decline, smallholders and managers of B. excelsa rich forests should focus on conservation of pre-mature and mature individuals.
650 $ademography
650 $aBertholletia Excelsa
650 $aFloresta Tropical
653 $aColheita sustentável
653 $aMatrix population model
653 $aModelo de população matricial
653 $aRainfall
653 $aSustainable harvest
653 $aTropical forest
700 1 $aKAINER, K. A.
700 1 $aCROPPER JUNIOR, W. P.
700 1 $aSTAUDHAMMER, C. L.
700 1 $aWADT, L. H. de O.
773 $tBiotropica$gv. 50, n. 1, p. 50-59, 2018.
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Registro original: |
Embrapa Rondônia (CPAF-RO) |
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| Registros recuperados : 45 | |
| 7. |  | KAINER, K. A.; WADT, L. H. de O.; STAUDHAMMER, C. L. Contribuição associada aos modos de vida de populações locais e à conservação florestal. In: WADT, L. H. de O.; MAROCCOLO, J. F.; GUEDES, M. C.; SILVA, K. E. da (ed.). Castanha-da-amazônia: estudos sobre a espécie e sua cadeia de valor. Brasília, DF: Embrapa, 2023. cap. 4, p. 81-106. V. 1: Aspectos sociais, econômicos e organizacionais. ODS 2, ODS 3, ODS 8, ODS 11, ODS 12, ODS 13, ODS 17.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Rondônia. |
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| 13. | | WADT, L. H. de O.; MUNARETTI, A. M.; FONSECA, F.; KAINER, K. A. An easily accessible technology to increase Brazil nut stand productivity: a case study in Chico Mendes Extractive Reserve. In: IUFRO WORLD CONGRESS, 24., 2014, Salt Lake. Sustaining forests, sustaining people: the role of research. Abstracts... Salt Lake: IUFRO, 2014. (The International Forestry Review, v. 16, n. 5). Editado por: John A. Parrota; Cynthia F. Moser; Amy J. Scherzer; Nancy E. Koerth; Daryl R. Lederle.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| 14. | | WADT, L. H. de O.; KAINER, K. A.; SERRANO, R.; GOMES-SILVA, D. Ecología de la castaña (Bertholletia excelsa) en el Estado de Acre. In: REUNIÓN NACIONAL SOBRE INVESTIGACIÓN FORESTAL, 3., 2006, Santa Cruz de la Sierra, Bolivia. Manejo integral del bosque: desarrollo y conservación: programas y resúmenes. Santa Cruz de la Sierra, Bolivia: Instituto Boliviano de Investigación Forestal, 2006. p. 141.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| 16. | | KAINER, K. A.; WADT, L. H. de O.; STAUDHAMMER, C. L. Testing a silvicultural recommendation: Brazil nut responses 10 years after liana cutting. In: IUFRO WORLD CONGRESS, 24., 2014, Salt Lake. Sustaining forests, sustaining people: the role of research. Abstracts... Salt Lake: IUFRO, 2014. p. 139. (The International Forestry Review, v. 16, n. 5). Editado por: John A. Parrota; Cynthia F. Moser; Amy J. Scherzer; Nancy E. Koerth; Daryl R. Lederle.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| 20. | | DIGIANO, M.; DUCHELLE, A.; BRUNA, E.; DAIN, J.; WADT, L. H. de O.; KAINER, K. A. Strategies and practical tools for integrating local stakeholders into conservation and resources-use research. In: ANNUAL MEETING OF THE ASSOCIATION FOR TROPICAL FOR BIOLOGY AND CONSERVATION, 2007, Morelia, Mexico. Tropical biology: linking tropical biology with humna dimensions: program and abstracts. Morelia: Universidad Nacional Autónoma de Mexico, 2007. 1 p.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Acre. |
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| Registros recuperados : 45 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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