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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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| Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
10/11/2022 |
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Data da última atualização: |
11/04/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
TEIXEIRA, A. L. de S.; SILVA, W. B. da; GOUVEA, L. V. de; SOUZA, G. N. de; OLIVEIRA, K. G.; GONZAGA, C. N.; ALMOSNY, N. R. P.; ALENCAR, N. X. de. |
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Afiliação: |
ANDRÉ LUIS DE SOUZA TEIXEIRA, Universidade Federal Fluminense; WELINGTON BANDEIRA DA SILVA, Universidade Federal Fluminense; LIANA VILLELA DE GOUVÊA, Universidade Federal Fluminense; GUILHERME NUNES DE SOUZA, CNPGL; KAROL GUIMARÃES OLIVEIRA, Instituto Evandro Chagas; CAMILA NUNES GONZAGA, Instituto Evandro Chagas; NÁDIA REGINA PEREIRA ALMOSNY, Universidade Federal Fluminense; NAYRO XAVIER DE ALENCAR, Universidade Federal Fluminense. |
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Título: |
Asymmetric dimethyl arginine in captive owl monkeys (Aotus sp). |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Journal of Medical Primatology, v. 52, p. 144-146, 2023. |
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DOI: |
https://doi.org/10.1111/jmp.12624 |
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Idioma: |
Inglês |
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Conteúdo: |
Only four of 40 animals had measurable asymmetric dimethyl arginine (ADMA) levels. The young primate had the lowest value (53.4 ng/ml) when compared with the two adults (218.8 ± 9.3 ng/ml) and the elderly one (320.5 ng/ml). The ADMA levels in this study may relate to the echocardiographic abnormalities found, and possible hypertensive individuals. |
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Palavras-Chave: |
Biomarcador; Dimetilarginina assimétrica; Macaco-coruja; Neotropical primates; Vascular risk factor. |
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Thesagro: |
Macaco. |
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Thesaurus NAL: |
Biomarkers; Hypertension. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 01263naa a2200313 a 4500
001 2148184
005 2023-04-11
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1111/jmp.12624$2DOI
100 1 $aTEIXEIRA, A. L. de S.
245 $aAsymmetric dimethyl arginine in captive owl monkeys (Aotus sp).$h[electronic resource]
260 $c2023
520 $aOnly four of 40 animals had measurable asymmetric dimethyl arginine (ADMA) levels. The young primate had the lowest value (53.4 ng/ml) when compared with the two adults (218.8 ± 9.3 ng/ml) and the elderly one (320.5 ng/ml). The ADMA levels in this study may relate to the echocardiographic abnormalities found, and possible hypertensive individuals.
650 $aBiomarkers
650 $aHypertension
650 $aMacaco
653 $aBiomarcador
653 $aDimetilarginina assimétrica
653 $aMacaco-coruja
653 $aNeotropical primates
653 $aVascular risk factor
700 1 $aSILVA, W. B. da
700 1 $aGOUVEA, L. V. de
700 1 $aSOUZA, G. N. de
700 1 $aOLIVEIRA, K. G.
700 1 $aGONZAGA, C. N.
700 1 $aALMOSNY, N. R. P.
700 1 $aALENCAR, N. X. de
773 $tJournal of Medical Primatology$gv. 52, p. 144-146, 2023.
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