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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
26/08/2021 |
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Data da última atualização: |
03/03/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CHALK, P. M.; BALIEIRO, F. de C.; CHEN, D. |
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Afiliação: |
PHILLIP M. CHALK, UNIVERSITY OF MELBOURNE; FABIANO DE CARVALHO BALIEIRO, CNPS; DELI CHEN, UNIVERSITY OF MELBOURNE. |
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Título: |
Quantitative estimation of carbon dynamics in terrestrial ecosystems using natural variations in the delta C-13 abundance of soils and biota. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Advances in Agronomy, v. 167, p. 63-104, 2021. |
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DOI: |
https://doi.org/10.1016/bs.agron.2020.12.002 |
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Idioma: |
Inglês |
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Conteúdo: |
The dynamics of C in terrestrial ecosystems can be traced on the basis of the marked differences in the delta C-13 signatures of plants possessing the C-3, C-4 or CAM photosynthetic pathways. When two C sources differing in natural C-13 abundance (delta C-13) contribute to a mixture, the relative contribution of each can be quantitatively apportioned by the use of a two-end-member mixing model. This ability of delta C-13 to partition source is unique among stable isotopes important in the biosphere, where with few exceptions, natural abundance signatures are used as qualitative rather than quantitative tracers because of isotopic fractionation. The many and varied applications of delta C-13 in apportioning C source are examined herein. They include estimation of soil organic matter turnover due to either a known or presumed change in vegetation cover, the contribution of organic materials to the soil C pool, the contribution of C source to vertebrate and invertebrate diets, disentangling roots in mixed C-3-C-4 stands, and partitioning the sources of respired CO2 in various C-3-C-4 mixtures, i.e., between plants and soil, between plants, between animal excreta slurries and soil, within fungal media and within biochar-amended soil. |
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Palavras-Chave: |
13C natural abundance; C dynamics; Delta 13C; Mixing models. |
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Thesaurus Nal: |
Fractionation. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 01959naa a2200217 a 4500
001 2133878
005 2022-03-03
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/bs.agron.2020.12.002$2DOI
100 1 $aCHALK, P. M.
245 $aQuantitative estimation of carbon dynamics in terrestrial ecosystems using natural variations in the delta C-13 abundance of soils and biota.$h[electronic resource]
260 $c2021
520 $aThe dynamics of C in terrestrial ecosystems can be traced on the basis of the marked differences in the delta C-13 signatures of plants possessing the C-3, C-4 or CAM photosynthetic pathways. When two C sources differing in natural C-13 abundance (delta C-13) contribute to a mixture, the relative contribution of each can be quantitatively apportioned by the use of a two-end-member mixing model. This ability of delta C-13 to partition source is unique among stable isotopes important in the biosphere, where with few exceptions, natural abundance signatures are used as qualitative rather than quantitative tracers because of isotopic fractionation. The many and varied applications of delta C-13 in apportioning C source are examined herein. They include estimation of soil organic matter turnover due to either a known or presumed change in vegetation cover, the contribution of organic materials to the soil C pool, the contribution of C source to vertebrate and invertebrate diets, disentangling roots in mixed C-3-C-4 stands, and partitioning the sources of respired CO2 in various C-3-C-4 mixtures, i.e., between plants and soil, between plants, between animal excreta slurries and soil, within fungal media and within biochar-amended soil.
650 $aFractionation
653 $a13C natural abundance
653 $aC dynamics
653 $aDelta 13C
653 $aMixing models
700 1 $aBALIEIRO, F. de C.
700 1 $aCHEN, D.
773 $tAdvances in Agronomy$gv. 167, p. 63-104, 2021.
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Registro original: |
Embrapa Solos (CNPS) |
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URL |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Pantanal. Para informações adicionais entre em contato com cpap.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
28/11/2018 |
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Data da última atualização: |
30/11/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
SILVEIRA, M.; TOMAS, W. M.; FISCHER, E.; BORDIGNON, M. O. |
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Afiliação: |
MAURÍCIO SILVEIRA, UFMS; WALFRIDO MORAES TOMAS, CPAP; ERICH FISCHER, UFMS; MARCELO OSCAR BORDIGNON, UFMS. |
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Título: |
Habitat occupancy by Artibeus planirostris bats in the Pantanal wetland, Brazil. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Mammalian Biology, v. 91, p. 1-6, 2018. |
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DOI: |
https://doi.org/10.1016/j.mambio.2018.03.003 |
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Idioma: |
Inglês |
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Conteúdo: |
Structural characteristics of vegetation can influence the use of space by Neotropical bats, affecting their local abundance and patterns of activity. In this study, we ask whether vegetation structure determines the occupancy by and detectability of the fruit-eating bat Artibeus planirostris among habitats in the Pantanal wetland. We mistnetted bats in the wet and dry seasons, and measured vegetation structures in 36 sites systematically established each 1 km. The probability of occupancy was negatively influenced by the mean distance between trees, with a pronounced decrease in sites with less than about 16 trees per hectare, and the detectability was negatively influenced by moonlight. Artibeus planirostris tended to widely occupy the available vegetation gradient, from savannas with scattered trees to dense forest patches during the wet season, and to reduce general occupancy of all sites during the dry season. Considering the threshold of 16 trees h1-1, ongoing replacement of savannas and forested areas by exotic pastures for cattle ranching has converted suitable habitats into unhospitable areas for A. planirostris in the Pantanal wetland. |
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Thesagro: |
Habitat; Morcego; Vegetação. |
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Thesaurus NAL: |
Artibeus; Habitats; Vegetation. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 01837naa a2200241 a 4500
001 2100292
005 2018-11-30
008 2018 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.mambio.2018.03.003$2DOI
100 1 $aSILVEIRA, M.
245 $aHabitat occupancy by Artibeus planirostris bats in the Pantanal wetland, Brazil.$h[electronic resource]
260 $c2018
520 $aStructural characteristics of vegetation can influence the use of space by Neotropical bats, affecting their local abundance and patterns of activity. In this study, we ask whether vegetation structure determines the occupancy by and detectability of the fruit-eating bat Artibeus planirostris among habitats in the Pantanal wetland. We mistnetted bats in the wet and dry seasons, and measured vegetation structures in 36 sites systematically established each 1 km. The probability of occupancy was negatively influenced by the mean distance between trees, with a pronounced decrease in sites with less than about 16 trees per hectare, and the detectability was negatively influenced by moonlight. Artibeus planirostris tended to widely occupy the available vegetation gradient, from savannas with scattered trees to dense forest patches during the wet season, and to reduce general occupancy of all sites during the dry season. Considering the threshold of 16 trees h1-1, ongoing replacement of savannas and forested areas by exotic pastures for cattle ranching has converted suitable habitats into unhospitable areas for A. planirostris in the Pantanal wetland.
650 $aArtibeus
650 $aHabitats
650 $aVegetation
650 $aHabitat
650 $aMorcego
650 $aVegetação
700 1 $aTOMAS, W. M.
700 1 $aFISCHER, E.
700 1 $aBORDIGNON, M. O.
773 $tMammalian Biology$gv. 91, p. 1-6, 2018.
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