| |
|
|
| Registros recuperados : 5 | |
| 1. |  | FERREIRA, T. G. T.; PENHA, H. A.; ZUCCHI, M. I.; SANTOS, A. A.; HANAI, L. R.; JUNQUEIRA, N. T. V.; BRAGA, M. F.; VENCOVSKY, R.; VIEIRA, L. C. Outcrossing rate in sweet passion fruit based on molecular markers. Plant Breeding, v. 129, n. 6, p. 727-730, Feb. 2010.| Biblioteca(s): Embrapa Cerrados. |
|    |
| 2. | | FREITAS, D. A. F. de; PENHA, H. G. V.; RUFINI, M.; GOMIDE, P. H. O.; CARDOSO, E. L.; SILVA, M. L. N.; SANTOS, S. A.; CARVALHO, J. G. de. Caracterização de sintomas visuais de deficiência de macronutrientes em Mesosetum Chaseae Luces. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 33., 2011, Uberlândia. Solos nos biomas brasileiros: sustentabilidade e mudanças climáticas: anais. Uberlândia: Sociedade Brasileira de Ciência do Solo, 2011. Não paginado.| Biblioteca(s): Embrapa Pantanal. |
| |
| 3. | | PEREIRA, G. S.; NUNES, E. S.; LAPERUTA, L. D. C.; BRAGA, M. F.; PENHA, H. A.; DINIZ, A. L.; MUNHOZ, C. F.; GAZAFFI, R.; GARCIA, A. A. F.; VIEIRA, M. L. C. Molecular polymorphism and linkage analysis in sweet passion fruit, an outcrossing species. Annals of Applied Biology, v. 162, n. 3, p. 347-361, 2013.| Biblioteca(s): Embrapa Cerrados. |
| |
| 4. | | SADER M. A.; DIAS, Y.; MUNHOZ, C.; PENHA, H.; AMORIM, B. S.; COSTA, L.; VAIO, M.; SANTOS L. A. C.; DORNELAS, M. C.; BERGES, H.; MELO, N. F. de; SOUZA, G.; VIEIRA, M. L.; PEDROSA-HARAND, A. PS-P-1679 Chromosome evolution in Passiflora: from chromosome numbers to single-copy and repetitive DNA sequences. In: INTERNATIONAL CHROMOSOME CONFERENCE, 22., 2018, Prague, Czech Republic. Abstracts... Prague, Czech Republic: European Cooperation in Science and Technology, 2018.| Biblioteca(s): Embrapa Semiárido. |
|  |
| 5. | | FREITAS, D. A. F. de; GOMIDE, P. H. O.; RUFINI, M.; PENHA, H. G. V.; CARDOSO, E. L.; SILVA, M. L. N.; SANTOS, S. A.; CARVALHO, J. G. de. Sintomas visuais de deficiências nutricionais em grama-do-cerrado (Mesosetum chaseae). Corumbá: Embrapa Pantanal, 2011. 17p. (Embrapa Pantanal. Boletim de Pesquisa e Desenvolvimento, 110)| Biblioteca(s): Embrapa Pantanal. |
| |
| Registros recuperados : 5 | |
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Rondônia. |
|
Data corrente: |
10/10/2017 |
|
Data da última atualização: |
22/01/2018 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
Internacional - A |
|
Autoria: |
BERTWELL, T. D.; KAINER, K. A.; CROPPER JUNIOR, W. P.; STAUDHAMMER, C. L.; WADT, L. H. de O. |
|
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. |
|
Título: |
Are Brazil nut populations threatened by fruit harvest? |
|
Ano de publicação: |
2018 |
|
Fonte/Imprenta: |
Biotropica, v. 50, n. 1, p. 50-59, 2018. |
|
DOI: |
10.1111/btp.12505 |
|
Idioma: |
Inglês |
|
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 |
|
Palavras-Chave: |
Colheita sustentável; Matrix population model; Modelo de população matricial; Rainfall; Sustainable harvest; Tropical forest. |
|
Thesagro: |
Bertholletia Excelsa; Floresta Tropical. |
|
Thesaurus NAL: |
demography. |
|
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/171489/1/Bertwell-et-al-2018-Biotropica.pdf
|
|
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.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Rondônia (CPAF-RO) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
