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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
01/06/2016 |
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Data da última atualização: |
25/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SANDE, M. T. van der; ARETS, E. J. M. M.; PEÑA-CLAROS, M.; AVILA, A. L. de; ROOPSIND, A.; MAZZEI, L.; ASCARRUNZ, N.; FINEGAN, B.; ALARCÓN, A.; CÁCERES-SIANI, A.; LICONA, J. C.; RUSCHEL, A.; TOLEDO, M.; POORTER, L. |
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Afiliação: |
Masha T . van der Sande, Instituto Boliviano de Investigación Forestal; Eric J. M. M. Arets, Wageningen University and Research Centre; Marielos Peña -Claros, Forest Ecology and Forest Management Group, Wageningen University.; Angela Luciana de Avila, Faculty of Environment and Natural Resources, Chair of Silviculture, University of Freiburg; Anand Roopsind, Department of Biology, University of Florida; LUCAS JOSE MAZZEI DE FREITAS, CPATU; Nataly Ascarrunz, Instituto Boliviano de Investigación Forestal; Bryan Finegan, Production and Conservation in Forests Programme CATIE; Alfredo Alarcón, Instituto Boliviano de Investigación Forestal; Asmani Cáceres-Siani, Rurrenabaque, Beni.; Juan Carlos Licona, Instituto Boliviano de Investigación Forestal; ADEMIR ROBERTO RUSCHEL, CPATU; Marisol Toledo, Instituto Boliviano de Investigación Forestal; Lourens Poorter, Forest Ecology and Forest Management Group, Wageningen University. |
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Título: |
Old-growth Neotropical forests are shifting in species and trait composition. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Ecological Monographs, v. 86, n. 2, p. 228-243, 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
Tropical forests have long been thought to be in stable state, but recent insights indicate that global change is leading to shifts in forest dynamics and species composition. These shifts may be driven by environmental changes such as increased resource availability, increased drought stress, and/or recovery from past disturbances. The relative importance of these drivers can be inferred from analyzing changes in trait values of tree communities. Here, we evaluate a decade of change in species and trait composition across five old-growth Neotropical forests in Bolivia, Brazil, Guyana, and Costa Rica that cover large gradients in rainfall and soil fertility. To identify the drivers of compositional change, we used data from 29 permanent sample plots and measurements of 15 leaf, stem, and whole-plant traits that are important for plant performance and should respond to global change drivers. We found that forests differ strongly in their community-mean trait values, resulting from differences in soil fertility and annual rainfall seasonality. The abundance of deciduous species with high specific leaf area increases from wet to dry forests. The community-mean wood density is high in the driest forests to protect xylem vessels against drought cavitation, and is high in nutrient-poor forests to increase wood longevity and enhance nutrient residence time in the plant. Interestingly, the species composition changed over time in three of the forests, and the community-mean wood density increased and the specific leaf area decreased in all forests, indicating that these forests are changing toward later successional stages dominated by slow-growing, shade-tolerant species. We did not see changes in other traits that could reflect responses to increased drought stress, such as increased drought deciduousness or decreased maximum adult size, or that could reflect increased resource availability (CO2, rainfall, or nitrogen). Changes in species and trait composition in these forests are therefore most likely caused by recovery from past disturbances. These compositional changes may also lead to shifts in ecosystem processes, such as a lower carbon sequestration and ?slower? forest dynamics. MenosTropical forests have long been thought to be in stable state, but recent insights indicate that global change is leading to shifts in forest dynamics and species composition. These shifts may be driven by environmental changes such as increased resource availability, increased drought stress, and/or recovery from past disturbances. The relative importance of these drivers can be inferred from analyzing changes in trait values of tree communities. Here, we evaluate a decade of change in species and trait composition across five old-growth Neotropical forests in Bolivia, Brazil, Guyana, and Costa Rica that cover large gradients in rainfall and soil fertility. To identify the drivers of compositional change, we used data from 29 permanent sample plots and measurements of 15 leaf, stem, and whole-plant traits that are important for plant performance and should respond to global change drivers. We found that forests differ strongly in their community-mean trait values, resulting from differences in soil fertility and annual rainfall seasonality. The abundance of deciduous species with high specific leaf area increases from wet to dry forests. The community-mean wood density is high in the driest forests to protect xylem vessels against drought cavitation, and is high in nutrient-poor forests to increase wood longevity and enhance nutrient residence time in the plant. Interestingly, the species composition changed over time in three of the forests, and the community-mean wood den... Mostrar Tudo |
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Thesagro: |
Biodiversidade; Fertilidade do Solo; Floresta; Floresta Tropical. |
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Thesaurus Nal: |
soil fertility. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 03149naa a2200337 a 4500
001 2046085
005 2022-05-25
008 2016 bl uuuu u00u1 u #d
100 1 $aSANDE, M. T. van der
245 $aOld-growth Neotropical forests are shifting in species and trait composition.$h[electronic resource]
260 $c2016
520 $aTropical forests have long been thought to be in stable state, but recent insights indicate that global change is leading to shifts in forest dynamics and species composition. These shifts may be driven by environmental changes such as increased resource availability, increased drought stress, and/or recovery from past disturbances. The relative importance of these drivers can be inferred from analyzing changes in trait values of tree communities. Here, we evaluate a decade of change in species and trait composition across five old-growth Neotropical forests in Bolivia, Brazil, Guyana, and Costa Rica that cover large gradients in rainfall and soil fertility. To identify the drivers of compositional change, we used data from 29 permanent sample plots and measurements of 15 leaf, stem, and whole-plant traits that are important for plant performance and should respond to global change drivers. We found that forests differ strongly in their community-mean trait values, resulting from differences in soil fertility and annual rainfall seasonality. The abundance of deciduous species with high specific leaf area increases from wet to dry forests. The community-mean wood density is high in the driest forests to protect xylem vessels against drought cavitation, and is high in nutrient-poor forests to increase wood longevity and enhance nutrient residence time in the plant. Interestingly, the species composition changed over time in three of the forests, and the community-mean wood density increased and the specific leaf area decreased in all forests, indicating that these forests are changing toward later successional stages dominated by slow-growing, shade-tolerant species. We did not see changes in other traits that could reflect responses to increased drought stress, such as increased drought deciduousness or decreased maximum adult size, or that could reflect increased resource availability (CO2, rainfall, or nitrogen). Changes in species and trait composition in these forests are therefore most likely caused by recovery from past disturbances. These compositional changes may also lead to shifts in ecosystem processes, such as a lower carbon sequestration and ?slower? forest dynamics.
650 $asoil fertility
650 $aBiodiversidade
650 $aFertilidade do Solo
650 $aFloresta
650 $aFloresta Tropical
700 1 $aARETS, E. J. M. M.
700 1 $aPEÑA-CLAROS, M.
700 1 $aAVILA, A. L. de
700 1 $aROOPSIND, A.
700 1 $aMAZZEI, L.
700 1 $aASCARRUNZ, N.
700 1 $aFINEGAN, B.
700 1 $aALARCÓN, A.
700 1 $aCÁCERES-SIANI, A.
700 1 $aLICONA, J. C.
700 1 $aRUSCHEL, A.
700 1 $aTOLEDO, M.
700 1 $aPOORTER, L.
773 $tEcological Monographs$gv. 86, n. 2, p. 228-243, 2016.
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Embrapa Amazônia Oriental (CPATU) |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
20/01/2020 |
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Data da última atualização: |
18/08/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
C - 0 |
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Autoria: |
SILVA, C. T. B. da; NAKASONE, A. K.; LEMOS, W. de P.; LAMEIRA, O. A.; OLIVEIRA, L. C. de. |
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Afiliação: |
CLENILDA TOLENTINO B DA SILVA, CPATU; ALESSANDRA KEIKO NAKASONE, CPATU; WALKYMARIO DE PAULO LEMOS, CPATU; OSMAR ALVES LAMEIRA, CPATU; Luana Cardoso de Oliveira, UFPA. |
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Título: |
Antimicrobial activity of alcoholic extracts of medicinal plants against Phytopathogenic fungi. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Journal of Experimental Agriculture International, v. 41, n. 6, 2019. Article no. JEAI.53424. |
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DOI: |
https://doi.org/10.9734/jeai/2019/v41i630438 |
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Idioma: |
Inglês |
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Conteúdo: |
Aims: This work aimed to evaluate the antimicrobial effects of 14 alcoholic extracts of medicinal plants on the mycelial growth of Colletotrichum gloeosporioides, Fusarium oxysporum f. sp. passiflorae, Fusarium solani and Rhizoctonia solani. Those are fungi that cause diseases in Passiflora edulis. Study Design: With the obtained data the mycelial growth rate index (MGRI) was calculated, afterwards the analysis of variance was performed and the means were compared by the Scott-Knott test at 5% probability. Place and Duration of Study: Plant Pathology Laboratory, Embrapa Eastern Amazon, Belém, Pará, Brazil, between May 2014 and April 2015. Methodology: The extracts were prepared with 1.0 g of powdered plant material and 10 mL of commercial ethyl alcohol 92.8º (0.1 g mL-1) under constant agitation in an orbital shaker at 200 rpm for 20 minutes. They were then kept in the refrigerator for 24 hours at rest. The extracts were centrifuged and filtered on Millipore membranes with 0.22 µm porosity. The tests with the phytopathogenic fungi were carried out in vitro with the alcoholic extracts at 1% concentration. The experimental design was completely randomized with 15 treatments and 5 replicates. Results: All the extracts reduced the growth of the fungi C. gloeosporioides. The extracts the Eucalyptus angulosa, Lippia alba, Zingiber officinale, Cymbopagon citratus, Azadirachta indica, Plectranthus barbathus, Hibiscus sabdariffa, Aloe vera, Pedilanthus tithymaloides, Mansoa alliacea and Chenopodium ambrosioides reduced the mycelial growth of F. oxysporum f. sp. passiflorae. Only the extract of E. angulosa presented reduction in the growth of F. solani. Meanwhile the extracts of E. angulosa, Z. officinale, L. alba, M. alliacea and P. barbathus reduced the mycelial growth of R. solani. Conclusion: All extracts presented antimicrobial potential, being that the extract of E. angulosa reduced the mycelial growth of all the evaluated fungi. MenosAims: This work aimed to evaluate the antimicrobial effects of 14 alcoholic extracts of medicinal plants on the mycelial growth of Colletotrichum gloeosporioides, Fusarium oxysporum f. sp. passiflorae, Fusarium solani and Rhizoctonia solani. Those are fungi that cause diseases in Passiflora edulis. Study Design: With the obtained data the mycelial growth rate index (MGRI) was calculated, afterwards the analysis of variance was performed and the means were compared by the Scott-Knott test at 5% probability. Place and Duration of Study: Plant Pathology Laboratory, Embrapa Eastern Amazon, Belém, Pará, Brazil, between May 2014 and April 2015. Methodology: The extracts were prepared with 1.0 g of powdered plant material and 10 mL of commercial ethyl alcohol 92.8º (0.1 g mL-1) under constant agitation in an orbital shaker at 200 rpm for 20 minutes. They were then kept in the refrigerator for 24 hours at rest. The extracts were centrifuged and filtered on Millipore membranes with 0.22 µm porosity. The tests with the phytopathogenic fungi were carried out in vitro with the alcoholic extracts at 1% concentration. The experimental design was completely randomized with 15 treatments and 5 replicates. Results: All the extracts reduced the growth of the fungi C. gloeosporioides. The extracts the Eucalyptus angulosa, Lippia alba, Zingiber officinale, Cymbopagon citratus, Azadirachta indica, Plectranthus barbathus, Hibiscus sabdariffa, Aloe vera, Pedilanthus tithymaloides, Mansoa alliacea ... Mostrar Tudo |
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Palavras-Chave: |
Atividade antifúngica; Controle alternativo; Fungos fitopatogênicos. |
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Thesagro: |
Fungo; Planta Medicinal. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/209187/1/30438-Article-Text-57092-1-10-20200101.pdf
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Marc: |
LEADER 02770naa a2200241 a 4500
001 2119033
005 2020-08-18
008 2019 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.9734/jeai/2019/v41i630438$2DOI
100 1 $aSILVA, C. T. B. da
245 $aAntimicrobial activity of alcoholic extracts of medicinal plants against Phytopathogenic fungi.$h[electronic resource]
260 $c2019
520 $aAims: This work aimed to evaluate the antimicrobial effects of 14 alcoholic extracts of medicinal plants on the mycelial growth of Colletotrichum gloeosporioides, Fusarium oxysporum f. sp. passiflorae, Fusarium solani and Rhizoctonia solani. Those are fungi that cause diseases in Passiflora edulis. Study Design: With the obtained data the mycelial growth rate index (MGRI) was calculated, afterwards the analysis of variance was performed and the means were compared by the Scott-Knott test at 5% probability. Place and Duration of Study: Plant Pathology Laboratory, Embrapa Eastern Amazon, Belém, Pará, Brazil, between May 2014 and April 2015. Methodology: The extracts were prepared with 1.0 g of powdered plant material and 10 mL of commercial ethyl alcohol 92.8º (0.1 g mL-1) under constant agitation in an orbital shaker at 200 rpm for 20 minutes. They were then kept in the refrigerator for 24 hours at rest. The extracts were centrifuged and filtered on Millipore membranes with 0.22 µm porosity. The tests with the phytopathogenic fungi were carried out in vitro with the alcoholic extracts at 1% concentration. The experimental design was completely randomized with 15 treatments and 5 replicates. Results: All the extracts reduced the growth of the fungi C. gloeosporioides. The extracts the Eucalyptus angulosa, Lippia alba, Zingiber officinale, Cymbopagon citratus, Azadirachta indica, Plectranthus barbathus, Hibiscus sabdariffa, Aloe vera, Pedilanthus tithymaloides, Mansoa alliacea and Chenopodium ambrosioides reduced the mycelial growth of F. oxysporum f. sp. passiflorae. Only the extract of E. angulosa presented reduction in the growth of F. solani. Meanwhile the extracts of E. angulosa, Z. officinale, L. alba, M. alliacea and P. barbathus reduced the mycelial growth of R. solani. Conclusion: All extracts presented antimicrobial potential, being that the extract of E. angulosa reduced the mycelial growth of all the evaluated fungi.
650 $aFungo
650 $aPlanta Medicinal
653 $aAtividade antifúngica
653 $aControle alternativo
653 $aFungos fitopatogênicos
700 1 $aNAKASONE, A. K.
700 1 $aLEMOS, W. de P.
700 1 $aLAMEIRA, O. A.
700 1 $aOLIVEIRA, L. C. de
773 $tJournal of Experimental Agriculture International$gv. 41, n. 6, 2019. Article no. JEAI.53424.
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