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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
06/12/2023 |
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Data da última atualização: |
06/12/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
HAWES, J. E.; VIEIRA, I. C. G.; MAGNAGO, L. F. S.; BERENGUER, E.; FERREIRA, J. N.; ARAGÃO, L. E. O. C.; CARDOSO, A.; LEES, A. C.; LENNOX, G. D.; TOBIAS, J. A; WALDRON, A.; BARLOW, J. |
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Afiliação: |
JOSEPH E. HAWES, Anglia Ruskin University / MPEG; IMA C. G. VIEIRA, MPEG; LUIZ F. S. MAGNAGO, Universidade Federal do Sul da Bahia; ERIKA BERENGUER, University of Oxford / Lancaster University; JOICE NUNES FERREIRA, CPATU; LUIZ E. O. C. ARAGÃO, University of Exeter / INPE; AMANDA CARDOSO, COLABORADORA CPATU; ALEXANDER C. LEES, Manchester Metropolitan University / Cornell University; GARETH D. LENNOX, Lancaster University; JOSEPH A. TOBIAS, Imperial College London; ANTHONY WALDRON, National University of Singapore; JOS BARLOW, MPEG / Lancaster University / UFLA. |
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Título: |
A large-scale assessment of plant dispersal mode and seed traits across human-modified Amazonian forests. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Journal of Ecology, v. 108, n. 4, p. 1373-1385, 2020. |
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DOI: |
https://doi.org/10.1111/1365-2745.13358 |
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Idioma: |
Inglês |
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Conteúdo: |
1. Quantifying the impact of habitat disturbance on ecosystem function is critical to understanding and predicting the future of tropical forests. Many studies have examined post-disturbance changes in animal traits related to mutualistic interac-tions with plants, but the effect of disturbance on plant traits in diverse forests has received much less attention.2. Focusing on two study regions in the eastern Brazilian Amazon, we used a trait-based approach to examine how seed dispersal functionality within tropical plant communities changes across a landscape-scale gradient of human modification, including both regenerating secondary forests and primary forests disturbed by burning and selective logging.3. Surveys of 230 forest plots recorded 26,533 live stems from 846 tree species. Using herbarium material and literature, we compiled trait information for each tree species, focusing on dispersal mode and seed size.4. Disturbance reduced tree diversity and increased the proportion of lower wood density and small-seeded tree species in study plots. Disturbance also increased the proportion of stems with seeds that are ingested by animals and reduced those dispersed by other mechanisms (e.g. wind). Older secondary forests had function-ally similar plant communities to the most heavily disturbed primary forests. Mean seed size and wood density per plot were positively correlated for plant species with seeds ingested by animals.5. Synthesis. Anthropogenic disturbance has major effects on the seed traits of tree communities, with implications for mutualistic interactions with animals. The im-portant role of animal-mediated seed dispersal in disturbed and recovering for-ests highlights the need to avoid defaunation or promote faunal recovery. The changes in mean seed width suggest larger vertebrates hold especially important functional roles in these human-modified forests. Monitoring fruit and seed traits can provide a valuable indicator of ecosystem condition, emphasizing the impor-tance of developing a comprehensive plant traits database for the Amazon and other biomes Menos1. Quantifying the impact of habitat disturbance on ecosystem function is critical to understanding and predicting the future of tropical forests. Many studies have examined post-disturbance changes in animal traits related to mutualistic interac-tions with plants, but the effect of disturbance on plant traits in diverse forests has received much less attention.2. Focusing on two study regions in the eastern Brazilian Amazon, we used a trait-based approach to examine how seed dispersal functionality within tropical plant communities changes across a landscape-scale gradient of human modification, including both regenerating secondary forests and primary forests disturbed by burning and selective logging.3. Surveys of 230 forest plots recorded 26,533 live stems from 846 tree species. Using herbarium material and literature, we compiled trait information for each tree species, focusing on dispersal mode and seed size.4. Disturbance reduced tree diversity and increased the proportion of lower wood density and small-seeded tree species in study plots. Disturbance also increased the proportion of stems with seeds that are ingested by animals and reduced those dispersed by other mechanisms (e.g. wind). Older secondary forests had function-ally similar plant communities to the most heavily disturbed primary forests. Mean seed size and wood density per plot were positively correlated for plant species with seeds ingested by animals.5. Synthesis. Anthropogenic disturbance has major e... Mostrar Tudo |
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Thesagro: |
Floresta; Floresta Secundaria. |
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Thesaurus Nal: |
Forest fires; Forest regeneration; Secondary forests. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 03063naa a2200325 a 4500
001 2159254
005 2023-12-06
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1111/1365-2745.13358$2DOI
100 1 $aHAWES, J. E.
245 $aA large-scale assessment of plant dispersal mode and seed traits across human-modified Amazonian forests.$h[electronic resource]
260 $c2020
520 $a1. Quantifying the impact of habitat disturbance on ecosystem function is critical to understanding and predicting the future of tropical forests. Many studies have examined post-disturbance changes in animal traits related to mutualistic interac-tions with plants, but the effect of disturbance on plant traits in diverse forests has received much less attention.2. Focusing on two study regions in the eastern Brazilian Amazon, we used a trait-based approach to examine how seed dispersal functionality within tropical plant communities changes across a landscape-scale gradient of human modification, including both regenerating secondary forests and primary forests disturbed by burning and selective logging.3. Surveys of 230 forest plots recorded 26,533 live stems from 846 tree species. Using herbarium material and literature, we compiled trait information for each tree species, focusing on dispersal mode and seed size.4. Disturbance reduced tree diversity and increased the proportion of lower wood density and small-seeded tree species in study plots. Disturbance also increased the proportion of stems with seeds that are ingested by animals and reduced those dispersed by other mechanisms (e.g. wind). Older secondary forests had function-ally similar plant communities to the most heavily disturbed primary forests. Mean seed size and wood density per plot were positively correlated for plant species with seeds ingested by animals.5. Synthesis. Anthropogenic disturbance has major effects on the seed traits of tree communities, with implications for mutualistic interactions with animals. The im-portant role of animal-mediated seed dispersal in disturbed and recovering for-ests highlights the need to avoid defaunation or promote faunal recovery. The changes in mean seed width suggest larger vertebrates hold especially important functional roles in these human-modified forests. Monitoring fruit and seed traits can provide a valuable indicator of ecosystem condition, emphasizing the impor-tance of developing a comprehensive plant traits database for the Amazon and other biomes
650 $aForest fires
650 $aForest regeneration
650 $aSecondary forests
650 $aFloresta
650 $aFloresta Secundaria
700 1 $aVIEIRA, I. C. G.
700 1 $aMAGNAGO, L. F. S.
700 1 $aBERENGUER, E.
700 1 $aFERREIRA, J. N.
700 1 $aARAGÃO, L. E. O. C.
700 1 $aCARDOSO, A.
700 1 $aLEES, A. C.
700 1 $aLENNOX, G. D.
700 1 $aTOBIAS, J. A
700 1 $aWALDRON, A.
700 1 $aBARLOW, J.
773 $tJournal of Ecology$gv. 108, n. 4, p. 1373-1385, 2020.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
03/12/2008 |
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Data da última atualização: |
27/10/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
KEDE, M. L. F. M.; MOREIRA, J. C.; MAVROPOULOS, E.; ROSSI, A. M.; BERTOLINO, L. C.; PEREZ, D. V.; ROCHA, N. C. C. da. |
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Afiliação: |
Maria Luiza F. M. Kede, FIOCRUZ; Josino C. Moreira, FIOCRUZ; Elena Mavropoulos, Centro Brasileiro de Pesquisas Físicas; Alexandre M. Rossi, Centro Brasileiro de Pesquisas Físicas; Luiz Carlos Bertolino, UERJ; DANIEL VIDAL PEREZ, CNPS; Nilce Carbonel Campos da Rocha, UFRJ. |
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Título: |
Estudo do comportamento do chumbo em latossolos brasileiros tratados com fosfatos: contribuições para a remediação de sítios contaminados. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Química Nova, São Paulo, v. 31, n. 3, p. 579-584, 2008. |
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DOI: |
https://doi.org/10.1590/S0100-40422008000300022 |
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Idioma: |
Português |
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Conteúdo: |
Phosphates have been used for lead immobilization in soils but the influence of soil type is not fully understood. In this work, lead chemical behaviour in two Brazilian latosoils (LA and LV) was studied via treatment with phosphates. The Pb concentration in Toxicity Characteristic Leaching Procedure (TCLP) solutions was decreased in all treatments. After treatment with H3PO4 the Pb concentration in the LA remained within the regulatory limit established by EPA. The ecotoxicological results with Daphnia pulex showed that this treatment reduced the lead bioavailability. Sequential extraction analyses showed that the lead was transferred from the most available to the residual fraction. Relevant decrease of soluble lead was observed in all phosphate treatments. |
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Palavras-Chave: |
Contaminação do solo; Remediação. |
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Thesagro: |
Chumbo; Fosfato. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/148412/1/a22v31n3.pdf
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Marc: |
LEADER 01593naa a2200253 a 4500
001 1339728
005 2021-10-27
008 2008 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/S0100-40422008000300022$2DOI
100 1 $aKEDE, M. L. F. M.
245 $aEstudo do comportamento do chumbo em latossolos brasileiros tratados com fosfatos$bcontribuições para a remediação de sítios contaminados.$h[electronic resource]
260 $c2008
520 $aPhosphates have been used for lead immobilization in soils but the influence of soil type is not fully understood. In this work, lead chemical behaviour in two Brazilian latosoils (LA and LV) was studied via treatment with phosphates. The Pb concentration in Toxicity Characteristic Leaching Procedure (TCLP) solutions was decreased in all treatments. After treatment with H3PO4 the Pb concentration in the LA remained within the regulatory limit established by EPA. The ecotoxicological results with Daphnia pulex showed that this treatment reduced the lead bioavailability. Sequential extraction analyses showed that the lead was transferred from the most available to the residual fraction. Relevant decrease of soluble lead was observed in all phosphate treatments.
650 $aChumbo
650 $aFosfato
653 $aContaminação do solo
653 $aRemediação
700 1 $aMOREIRA, J. C.
700 1 $aMAVROPOULOS, E.
700 1 $aROSSI, A. M.
700 1 $aBERTOLINO, L. C.
700 1 $aPEREZ, D. V.
700 1 $aROCHA, N. C. C. da
773 $tQuímica Nova, São Paulo$gv. 31, n. 3, p. 579-584, 2008.
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Embrapa Solos (CNPS) |
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