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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
28/06/2018 |
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Data da última atualização: |
22/11/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CAMPBELL, A. J.; CARVALHEIRO, L. G.; MAUES, M. M.; JAFFÉ, R.; GIANNINI, T. C.; FREITAS, M. A. B.; COELHO, B. W. T.; MENEZES, C. |
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Afiliação: |
Alistair John Campbell, CPATU/UFPA; Luísa Gigante Carvalheiro, UNB / Universidade de Lisboa; MARCIA MOTTA MAUES, CPATU; Rodolfo Jaffé, Instituto Tecnológico Vale; Tereza Cristina Giannini, Instituto Tecnológico Vale; Madson Antonio Benjamin Freitas, UFPE; Beatriz Woiski Texeira Coelho, MPEG; CRISTIANO MENEZES, CPATU. |
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Título: |
Anthropogenic disturbance of tropical forests threatens pollination services to açaí palm in the Amazon river delta. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Journal of Applied Ecology, v. 55, n. 4, p. 1725-1736, July 2018. |
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DOI: |
10.1111/1365-2664.13086 |
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Idioma: |
Inglês |
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Conteúdo: |
The açaí palm Euterpe oleracea Mart. in the Amazon river delta has seen rapid expansion to meet increased demand for its fruit. This has been achieved by transforming lowland forest habitats (floodplains) into simplified agroforests and intensive plantation in upland areas. As açaí palm makes an important contribution to the economy and food security of local communities, identifying management approaches that support biodiversity and ecosystem processes that underpin fruit production on açaí farms is essential. We compared flower?visitor communities and açaí fruit production in floodplain forests and upland plantations, across gradients of local management intensity (i.e. açaí density per ha) and surrounding forest cover. The relative contribution of biotic pollination and degree of pollen limitation were assessed using insect exclusion and hand?pollination experiments. We found that açaí flower visitors are highly diverse (c. 200 distinct taxa) and had variable responses to disturbance. Bee visitation was higher in floodplains and positively related to surrounding forest cover, but other flower visitors, including specialised curculionid beetles, were unresponsive to changes in surrounding forest cover. However, intensive management practices (i.e. high açaí palm densities) in floodplains and uplands had contrasting effects on flower?visitor communities, with flower?visitor richness being lower on intensively managed floodplain farms and ant densities being higher on intensive upland farms. Pollination experiments revealed açaí palm to be highly dependent on biotic pollination. Fruit set in open?pollinated inflorescences was positively related to flower?visitor richness and specialised curculionid beetle visitation, whereas the presence of ants on inflorescences had a negative effect. Synthesis and applications. Our study shows that pollinators are essential for açaí fruit production, but that intensive farming practices have eroded the relationship between surrounding forest cover and ecosystem function in floodplains (i.e. conversion of native forest into simplified agroforests) and increased the frequency of antagonistic interactions in uplands (e.g. high ant densities). These findings underline the value of extensive management practices, such as the maintenance of other tree species within farms and adjacent unmanaged forest patches, to ensure the long?term sustainability of açaí fruit production in the Amazon river delta. MenosThe açaí palm Euterpe oleracea Mart. in the Amazon river delta has seen rapid expansion to meet increased demand for its fruit. This has been achieved by transforming lowland forest habitats (floodplains) into simplified agroforests and intensive plantation in upland areas. As açaí palm makes an important contribution to the economy and food security of local communities, identifying management approaches that support biodiversity and ecosystem processes that underpin fruit production on açaí farms is essential. We compared flower?visitor communities and açaí fruit production in floodplain forests and upland plantations, across gradients of local management intensity (i.e. açaí density per ha) and surrounding forest cover. The relative contribution of biotic pollination and degree of pollen limitation were assessed using insect exclusion and hand?pollination experiments. We found that açaí flower visitors are highly diverse (c. 200 distinct taxa) and had variable responses to disturbance. Bee visitation was higher in floodplains and positively related to surrounding forest cover, but other flower visitors, including specialised curculionid beetles, were unresponsive to changes in surrounding forest cover. However, intensive management practices (i.e. high açaí palm densities) in floodplains and uplands had contrasting effects on flower?visitor communities, with flower?visitor richness being lower on intensively managed floodplain farms and ant densities being higher on inten... Mostrar Tudo |
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Thesagro: |
Açaí; Euterpe Oleracea; Floresta; Floresta Tropical; Polinização. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 03333naa a2200277 a 4500
001 2092910
005 2018-11-22
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1111/1365-2664.13086$2DOI
100 1 $aCAMPBELL, A. J.
245 $aAnthropogenic disturbance of tropical forests threatens pollination services to açaí palm in the Amazon river delta.$h[electronic resource]
260 $c2018
520 $aThe açaí palm Euterpe oleracea Mart. in the Amazon river delta has seen rapid expansion to meet increased demand for its fruit. This has been achieved by transforming lowland forest habitats (floodplains) into simplified agroforests and intensive plantation in upland areas. As açaí palm makes an important contribution to the economy and food security of local communities, identifying management approaches that support biodiversity and ecosystem processes that underpin fruit production on açaí farms is essential. We compared flower?visitor communities and açaí fruit production in floodplain forests and upland plantations, across gradients of local management intensity (i.e. açaí density per ha) and surrounding forest cover. The relative contribution of biotic pollination and degree of pollen limitation were assessed using insect exclusion and hand?pollination experiments. We found that açaí flower visitors are highly diverse (c. 200 distinct taxa) and had variable responses to disturbance. Bee visitation was higher in floodplains and positively related to surrounding forest cover, but other flower visitors, including specialised curculionid beetles, were unresponsive to changes in surrounding forest cover. However, intensive management practices (i.e. high açaí palm densities) in floodplains and uplands had contrasting effects on flower?visitor communities, with flower?visitor richness being lower on intensively managed floodplain farms and ant densities being higher on intensive upland farms. Pollination experiments revealed açaí palm to be highly dependent on biotic pollination. Fruit set in open?pollinated inflorescences was positively related to flower?visitor richness and specialised curculionid beetle visitation, whereas the presence of ants on inflorescences had a negative effect. Synthesis and applications. Our study shows that pollinators are essential for açaí fruit production, but that intensive farming practices have eroded the relationship between surrounding forest cover and ecosystem function in floodplains (i.e. conversion of native forest into simplified agroforests) and increased the frequency of antagonistic interactions in uplands (e.g. high ant densities). These findings underline the value of extensive management practices, such as the maintenance of other tree species within farms and adjacent unmanaged forest patches, to ensure the long?term sustainability of açaí fruit production in the Amazon river delta.
650 $aAçaí
650 $aEuterpe Oleracea
650 $aFloresta
650 $aFloresta Tropical
650 $aPolinização
700 1 $aCARVALHEIRO, L. G.
700 1 $aMAUES, M. M.
700 1 $aJAFFÉ, R.
700 1 $aGIANNINI, T. C.
700 1 $aFREITAS, M. A. B.
700 1 $aCOELHO, B. W. T.
700 1 $aMENEZES, C.
773 $tJournal of Applied Ecology$gv. 55, n. 4, p. 1725-1736, July 2018.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
06/09/2011 |
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Data da última atualização: |
06/09/2011 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
PESSOA, J. dos S.; GARCIA, A. R.; NAHUM, B. de S.; CASTRO, S. R. S. de; SANTOS, A. X. |
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Afiliação: |
JAKELINE DOS SANTOS PESSOA, UFRA; ALEXANDRE ROSSETTO GARCIA, CPATU; BENJAMIM DE SOUZA NAHUM, CPATU; SÂMIA RUBIELLE SILVA DE CASTRO, Faculdades Integradas do Tapajós; ALESSANDRA XIMENES SANTOS, Programa de PG em Ciência Animal UFPA/Embrapa/UFRA. |
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Título: |
Avaliação da fertilidade a campo de sêmen bubalino congelado com antioxidantes: resultados preliminares para inseminação artificial em tempo fixo. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA ORIENTAL, 15., 2011, Belém, PA. A ciência de fazer ciência: anais. Belém, PA: Embrapa Amazônia Oriental, 2011. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Notas: |
PIBIC-2011. |
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Conteúdo: |
A avaliação da fertilidade a campo de sêmen congelado com antioxidantes foi realizada através do uso da IATF. Foram utilizadas 23 fêmeas cíclicas das raças Murrah e Mediterrâneo, com idade e peso médio de (4,87 ± 2,60 anos e 528,5 ± 113,4 kg), divididas em dois grupos (CONT, n=13 e VIT/PENTOX, n=10), sincronizadas com protocolo Ovsynch e inseminadas seguindo o mesmo procedimento de descongelação seminal para ambos os grupos. O Grupo CONT foi inseminado com sêmen congelado à base de diluidor TES-TRIS e para o Grupo VIT/PENTOX foi utilizado sêmen criopreservado com diluidor TES-TRIS associado aos antioxidantes (vitamina C: 2,5 mM; pentoxifilina: 3,5 mM). O diagnóstico de gestação foi realizado por ultrassonografia, 56 dias após a IATF. Para a comparação das taxas de concepção foi utilizado o teste binomial (P<0,05). Não houve diferença significativa na taxa de concepção (38,5% e 30,0%) entre os Grupos CONT e VIT/PENTOX, respectivamente. O uso de antioxidante no sêmen congelado não foi suficiente para elevar as taxas reprodutivas, visto que as taxas de concepção entre os grupos não diferiram. |
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Thesagro: |
Antioxidante; Búfalo; Fertilidade; Sêmen. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/41200/1/OK-Resumo-expandido-Jakeline-pessoa-PIBIC-2011-15-07-2011-revisor.pdf
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Marc: |
LEADER 01962nam a2200229 a 4500
001 1899790
005 2011-09-06
008 2011 bl uuuu u00u1 u #d
100 1 $aPESSOA, J. dos S.
245 $aAvaliação da fertilidade a campo de sêmen bubalino congelado com antioxidantes$bresultados preliminares para inseminação artificial em tempo fixo.
260 $aIn: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA ORIENTAL, 15., 2011, Belém, PA. A ciência de fazer ciência: anais. Belém, PA: Embrapa Amazônia Oriental$c2011
300 $c1 CD-ROM.
500 $aPIBIC-2011.
520 $aA avaliação da fertilidade a campo de sêmen congelado com antioxidantes foi realizada através do uso da IATF. Foram utilizadas 23 fêmeas cíclicas das raças Murrah e Mediterrâneo, com idade e peso médio de (4,87 ± 2,60 anos e 528,5 ± 113,4 kg), divididas em dois grupos (CONT, n=13 e VIT/PENTOX, n=10), sincronizadas com protocolo Ovsynch e inseminadas seguindo o mesmo procedimento de descongelação seminal para ambos os grupos. O Grupo CONT foi inseminado com sêmen congelado à base de diluidor TES-TRIS e para o Grupo VIT/PENTOX foi utilizado sêmen criopreservado com diluidor TES-TRIS associado aos antioxidantes (vitamina C: 2,5 mM; pentoxifilina: 3,5 mM). O diagnóstico de gestação foi realizado por ultrassonografia, 56 dias após a IATF. Para a comparação das taxas de concepção foi utilizado o teste binomial (P<0,05). Não houve diferença significativa na taxa de concepção (38,5% e 30,0%) entre os Grupos CONT e VIT/PENTOX, respectivamente. O uso de antioxidante no sêmen congelado não foi suficiente para elevar as taxas reprodutivas, visto que as taxas de concepção entre os grupos não diferiram.
650 $aAntioxidante
650 $aBúfalo
650 $aFertilidade
650 $aSêmen
700 1 $aGARCIA, A. R.
700 1 $aNAHUM, B. de S.
700 1 $aCASTRO, S. R. S. de
700 1 $aSANTOS, A. X.
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