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Registro Completo |
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
20/02/2013 |
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Data da última atualização: |
06/07/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MARTINS, K.; RAPOSO, A.; KLIMAS, C. A.; VEASEY, E. A.; KAINER, K.; WADT, L. H. de O. |
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Afiliação: |
KARINA MARTINS, UNIVERSIDADE FEDERAL DE SÃO CARLOS; ANDREA RAPOSO, CPAF-AC; Christie A. Klimas, University of Florida; Elizabeth A. Veasey, ESALQ; Karen Kainer, UNIVERSITY OF FLORIDA; LUCIA HELENA DE OLIVEIRA WADT, CPAF-AC. |
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Título: |
Pollen and seed flow patterns of Carapa guianensis Aublet. (Meliaceae) in two types of Amazonian forest. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Genetics and Molecular Biology, Ribeirão Preto, v. 35, n. 4, p. 818-826, 2012. |
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ISSN: |
1415-4757 (impresso) / 1678-4685 (online). |
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Idioma: |
Inglês |
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Conteúdo: |
Various factors affect spatial genetic structure in plant populations, including adult density and primary and second-ary seed dispersal mechanisms. We evaluated pollen and seed dispersal distances and spatial genetic structure of Carapa guianensisAublet. (Meliaceae) in occasionally inundated andterra firmeforest environments that differed in tree densities and secondary seed dispersal agents. We used parentage analysis to obtain contemporary gene flow estimates and assessed the spatial genetic structure of adults and juveniles. Despite the higher density of adults (di-ameter at breast height25 cm) and spatial aggregation in occasionally inundated forest, the average pollen dis-persal distance was similar in both types of forest (195106minterra firme and 17587 m in occasionally inundated plots). Higher seed flow rates (36.7% of juveniles were from outside the plot) and distances (155 84 m) were found interra firme compared to the occasionally inundated plot (25.4% and 11469 m). There was a weak spatial genetic structure in juveniles and interra firme adults. These results indicate that inundation may not have had a significant role in seed dispersal in the occasionally inundated plot, probably because of the higher levels of seedling mortality. |
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Palavras-Chave: |
Crabwood; Diseminación de semillas; Flujo genético; Llanuras sujetas a inundaciones; Propagación de plantas; Terra firme; Trasfondo genético. |
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Thesagro: |
Andiroba; Carapa guianensis; Dispersão de semente; Flora; Genética; Polinização; População de planta; Propagação vegetativa; Várzea. |
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Thesaurus Nal: |
Floodplains; Gene flow; Genetic background; Plant propagation; Seed dispersal. |
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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/76846/1/24627.pdf
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Marc: |
LEADER 02581naa a2200445 a 4500
001 1950285
005 2021-07-06
008 2012 bl uuuu u00u1 u #d
022 $a1415-4757 (impresso) / 1678-4685 (online).
100 1 $aMARTINS, K.
245 $aPollen and seed flow patterns of Carapa guianensis Aublet. (Meliaceae) in two types of Amazonian forest.$h[electronic resource]
260 $c2012
520 $aVarious factors affect spatial genetic structure in plant populations, including adult density and primary and second-ary seed dispersal mechanisms. We evaluated pollen and seed dispersal distances and spatial genetic structure of Carapa guianensisAublet. (Meliaceae) in occasionally inundated andterra firmeforest environments that differed in tree densities and secondary seed dispersal agents. We used parentage analysis to obtain contemporary gene flow estimates and assessed the spatial genetic structure of adults and juveniles. Despite the higher density of adults (di-ameter at breast height25 cm) and spatial aggregation in occasionally inundated forest, the average pollen dis-persal distance was similar in both types of forest (195106minterra firme and 17587 m in occasionally inundated plots). Higher seed flow rates (36.7% of juveniles were from outside the plot) and distances (155 84 m) were found interra firme compared to the occasionally inundated plot (25.4% and 11469 m). There was a weak spatial genetic structure in juveniles and interra firme adults. These results indicate that inundation may not have had a significant role in seed dispersal in the occasionally inundated plot, probably because of the higher levels of seedling mortality.
650 $aFloodplains
650 $aGene flow
650 $aGenetic background
650 $aPlant propagation
650 $aSeed dispersal
650 $aAndiroba
650 $aCarapa guianensis
650 $aDispersão de semente
650 $aFlora
650 $aGenética
650 $aPolinização
650 $aPopulação de planta
650 $aPropagação vegetativa
650 $aVárzea
653 $aCrabwood
653 $aDiseminación de semillas
653 $aFlujo genético
653 $aLlanuras sujetas a inundaciones
653 $aPropagación de plantas
653 $aTerra firme
653 $aTrasfondo genético
700 1 $aRAPOSO, A.
700 1 $aKLIMAS, C. A.
700 1 $aVEASEY, E. A.
700 1 $aKAINER, K.
700 1 $aWADT, L. H. de O.
773 $tGenetics and Molecular Biology, Ribeirão Preto$gv. 35, n. 4, p. 818-826, 2012.
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Registro original: |
Embrapa Acre (CPAF-AC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
04/12/2023 |
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Data da última atualização: |
04/12/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
ASPEREN, H. van; ALVES-OLIVEIRA, J. R.; WARNEKE, T.; FORSBERG, B.; ARAUJO, A. C. de; NOTHOLT, J. |
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Afiliação: |
HELLA VAN ASPEREN, University of Bremen; JOÃO RAFAEL ALVES-OLIVEIRA, INPA; THORSTEN WARNEKE, University of Bremen; BRUCE FORSBERG, INPA; ALESSANDRO CARIOCA DE ARAUJO, CPATU; JUSTUS NOTHOLT, University of Bremen. |
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Título: |
The role of termite CH4 emissions on the ecosystem scale: a case study in the Amazon rainforest. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Biogeosciences, v. 18, p. 2609-2625, 2021. |
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DOI: |
https://doi.org/10.5194/bg-18-2609-2021 |
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Idioma: |
Inglês |
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Conteúdo: |
The magnitude of termite methane (CH4) emissions is still an uncertain part of the global CH4 budget and current emission estimates are based on limited field studies. We present in situ CH4 emission measurements of termite mounds and termite mound subsamples performed in the Amazon rainforest. Emissions from five termite mounds of the species Neocapritermes brasiliensis were measured by use of a large flux chamber connected to a portable gas analyser measuring CH4 and CO2. In addition, the emissions of mound subsamples were measured, after which the termites were counted so that a termite CH4 and CO2 emission factor could be determined. Mound emissions were found to range between 17.0 and for CH4 and between 1.1 and for CO2. A termite emission factor of was found, which is almost twice as high as the only other reported value for the Amazon. By combining mound emission measurements with the termite emission factor, colony sizes could be estimated, which were found to range between 55?125 thousand individuals. Estimates were similar to literature values, and we therefore propose that this method can be used as a quick non-intrusive method to estimate termite colony size in the field. The role of termites in the ecosystem's CH4 budget was evaluated by use of two approaches. Termite mound emission values were combined with local mound density numbers, leading to an estimate of , on average, emitted by termite mounds. In addition, the termite CH4 emission factor from this study was combined with termite biomass numbers, resulting in an estimate of termite-emitted CH4 of . Considering the relatively low net CH4 emissions previously measured at this ecosystem, we expect that termites play an important role in the CH4 budget of this terra firme ecosystem. MenosThe magnitude of termite methane (CH4) emissions is still an uncertain part of the global CH4 budget and current emission estimates are based on limited field studies. We present in situ CH4 emission measurements of termite mounds and termite mound subsamples performed in the Amazon rainforest. Emissions from five termite mounds of the species Neocapritermes brasiliensis were measured by use of a large flux chamber connected to a portable gas analyser measuring CH4 and CO2. In addition, the emissions of mound subsamples were measured, after which the termites were counted so that a termite CH4 and CO2 emission factor could be determined. Mound emissions were found to range between 17.0 and for CH4 and between 1.1 and for CO2. A termite emission factor of was found, which is almost twice as high as the only other reported value for the Amazon. By combining mound emission measurements with the termite emission factor, colony sizes could be estimated, which were found to range between 55?125 thousand individuals. Estimates were similar to literature values, and we therefore propose that this method can be used as a quick non-intrusive method to estimate termite colony size in the field. The role of termites in the ecosystem's CH4 budget was evaluated by use of two approaches. Termite mound emission values were combined with local mound density numbers, leading to an estimate of , on average, emitted by termite mounds. In addition, the termite CH4 emission factor from this study... Mostrar Tudo |
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Thesagro: |
Floresta Tropical. |
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Thesaurus NAL: |
Forestry. |
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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/doc/1159139/1/The-role-of-termite-CH4.pdf
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Marc: |
LEADER 02442naa a2200217 a 4500
001 2159139
005 2023-12-04
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.5194/bg-18-2609-2021$2DOI
100 1 $aASPEREN, H. van
245 $aThe role of termite CH4 emissions on the ecosystem scale$ba case study in the Amazon rainforest.$h[electronic resource]
260 $c2021
520 $aThe magnitude of termite methane (CH4) emissions is still an uncertain part of the global CH4 budget and current emission estimates are based on limited field studies. We present in situ CH4 emission measurements of termite mounds and termite mound subsamples performed in the Amazon rainforest. Emissions from five termite mounds of the species Neocapritermes brasiliensis were measured by use of a large flux chamber connected to a portable gas analyser measuring CH4 and CO2. In addition, the emissions of mound subsamples were measured, after which the termites were counted so that a termite CH4 and CO2 emission factor could be determined. Mound emissions were found to range between 17.0 and for CH4 and between 1.1 and for CO2. A termite emission factor of was found, which is almost twice as high as the only other reported value for the Amazon. By combining mound emission measurements with the termite emission factor, colony sizes could be estimated, which were found to range between 55?125 thousand individuals. Estimates were similar to literature values, and we therefore propose that this method can be used as a quick non-intrusive method to estimate termite colony size in the field. The role of termites in the ecosystem's CH4 budget was evaluated by use of two approaches. Termite mound emission values were combined with local mound density numbers, leading to an estimate of , on average, emitted by termite mounds. In addition, the termite CH4 emission factor from this study was combined with termite biomass numbers, resulting in an estimate of termite-emitted CH4 of . Considering the relatively low net CH4 emissions previously measured at this ecosystem, we expect that termites play an important role in the CH4 budget of this terra firme ecosystem.
650 $aForestry
650 $aFloresta Tropical
700 1 $aALVES-OLIVEIRA, J. R.
700 1 $aWARNEKE, T.
700 1 $aFORSBERG, B.
700 1 $aARAUJO, A. C. de
700 1 $aNOTHOLT, J.
773 $tBiogeosciences$gv. 18, p. 2609-2625, 2021.
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Embrapa Amazônia Oriental (CPATU) |
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