Dynamics of carbon, biomass, and structure in two Amazonian forests
Amazon forests are potentially globally significant sources or sinks for atmospheric carbon dioxide. In this study, we characterize the spatial trends in carbon storage and fluxes in both live and dead biomass (necromass) in two Amazonian forests, the Biological Dynamic of Forest Fragments Project (BDFFP), near Manaus, Amazonas, and the Tapajós National Forest (TNF) near Santarém, Pará. We assessed coarse woody debris (CWD) stocks, tree growth, mortality, and recruitment in ground-based plots distributed across the terra firme forest at both sites. Carbon dynamics were similar within each site, but differed significantly between the sites. The BDFFP and the TNF held comparable live biomass (167 ± 7.6 MgC·ha−1 versus 149 ± 6.0 MgC·ha−1, respectively), but stocks of CWD were 2.5 times larger at TNF (16.2 ± 1.5 MgC·ha−1 at BDFFP, versus 40.1 ± 3.9 MgC·ha−1 at TNF). A model of current forest dynamics suggests that the BDFFP was close to carbon balance, and its size class structure approximated a steady state. The TNF, by contrast, showed rapid carbon accrual to live biomass (3.24 ± 0.22 MgC·ha−1·a−1 in TNF, 2.59 ± 0.16 MgC·ha−1·a−1 in BDFFP), which was more than offset by losses from large stocks of CWD, as well as ongoing shifts of biomass among size classes. This pattern in the TNF suggests recovery from a significant disturbance. The net loss of carbon from the TNF will likely last 10–15 years after the initial disturbance (controlled by the rate of decay of coarse woody debris), followed by uptake of carbon as the forest size class structure and composition continue to shift. The frequency and longevity of forests showing such disequilibruim dynamics within the larger matrix of the Amazon remains an essential question to understanding Amazonian carbon balance.
Main Authors: | , , , , , , , , , , , |
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Format: | Texto biblioteca |
Language: | eng |
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Washington, D.C. American Geophysical Union
2008
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Subjects: | BIOMASA, CARBONO, ALMACENAMIENTO, ALOMETRIA, MEDICION, MODELOS, CICLO DEL CARBONO, ECUACIONES ALOMETRICAS, AGRICULTURA, USO DE LA TIERRA, BIOMASS, CARBON, STORAGE, MEASUREMENT, MODELS, CARBON CYCLE, FORESTS, LAND USE, |
Online Access: | https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2007JG000592 |
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BIOMASA CARBONO ALMACENAMIENTO ALOMETRIA MEDICION MODELOS CICLO DEL CARBONO ECUACIONES ALOMETRICAS AGRICULTURA USO DE LA TIERRA BIOMASS CARBON STORAGE MEASUREMENT MODELS CARBON CYCLE FORESTS LAND USE BIOMASA CARBONO ALMACENAMIENTO ALOMETRIA MEDICION MODELOS CICLO DEL CARBONO ECUACIONES ALOMETRICAS AGRICULTURA USO DE LA TIERRA BIOMASS CARBON STORAGE MEASUREMENT MODELS CARBON CYCLE FORESTS LAND USE |
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BIOMASA CARBONO ALMACENAMIENTO ALOMETRIA MEDICION MODELOS CICLO DEL CARBONO ECUACIONES ALOMETRICAS AGRICULTURA USO DE LA TIERRA BIOMASS CARBON STORAGE MEASUREMENT MODELS CARBON CYCLE FORESTS LAND USE BIOMASA CARBONO ALMACENAMIENTO ALOMETRIA MEDICION MODELOS CICLO DEL CARBONO ECUACIONES ALOMETRICAS AGRICULTURA USO DE LA TIERRA BIOMASS CARBON STORAGE MEASUREMENT MODELS CARBON CYCLE FORESTS LAND USE 75850 Hammond Pyle, Elizabeth Harvard University, Cambridge, Massachusetts, USA 116073 Santoni, Gregory W. (autor/a) Harvard University, Cambridge, Massachusetts, USA 98538 Nascimento, Henrique E.M. (autor/a) National Institute for Amazonian Research, Manaus, Brazil 79372 Hutyra, Lucy R. (autor/a) Harvard University : University of Washington 128756 Vieira, Simone Aparecida (autor/a) Universidade de Sao Paulo, Piracicaba, Brazil 60510 Curran, Daniel J. (autor/a) Harvard University, Cambridge, Massachusetts, USA 76112 Haren, Joost van (autor/a) University of Arizona, Tuscon, Arizona, USA 115234 Saleska, Scott R. (autor/a) University of Arizona, Tuscon, Arizona, USA 57417 Chow, V.Y. (autor/a) Harvard University, Cambridge, Massachusetts, USA 54216 Carmago, Plinio B. (autor/a) Universidade de Sao Paulo, Piracicaba, Brazil 85301 Laurance, William F. (autor/a) National Institute for Amazonian Research, Manaus, Brazil : 6Smithsonian Tropical Research Institute, Balboa, Panama 131937 Wofsy, Steven C. (autor/a) Harvard University, Cambridge, Massachusetts, USA Dynamics of carbon, biomass, and structure in two Amazonian forests |
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Amazon forests are potentially globally significant sources or sinks for atmospheric carbon dioxide. In this study, we characterize the spatial trends in carbon storage and fluxes in both live and dead biomass (necromass) in two Amazonian forests, the Biological Dynamic of Forest Fragments Project (BDFFP), near Manaus, Amazonas, and the Tapajós National Forest (TNF) near Santarém, Pará. We assessed coarse woody debris (CWD) stocks, tree growth, mortality, and recruitment in ground-based plots distributed across the terra firme forest at both sites. Carbon dynamics were similar within each site, but differed significantly between the sites. The BDFFP and the TNF held comparable live biomass (167 ± 7.6 MgC·ha−1 versus 149 ± 6.0 MgC·ha−1, respectively), but stocks of CWD were 2.5 times larger at TNF (16.2 ± 1.5 MgC·ha−1 at BDFFP, versus 40.1 ± 3.9 MgC·ha−1 at TNF). A model of current forest dynamics suggests that the BDFFP was close to carbon balance, and its size class structure approximated a steady state. The TNF, by contrast, showed rapid carbon accrual to live biomass (3.24 ± 0.22 MgC·ha−1·a−1 in TNF, 2.59 ± 0.16 MgC·ha−1·a−1 in BDFFP), which was more than offset by losses from large stocks of CWD, as well as ongoing shifts of biomass among size classes. This pattern in the TNF suggests recovery from a significant disturbance. The net loss of carbon from the TNF will likely last 10–15 years after the initial disturbance (controlled by the rate of decay of coarse woody debris), followed by uptake of carbon as the forest size class structure and composition continue to shift. The frequency and longevity of forests showing such disequilibruim dynamics within the larger matrix of the Amazon remains an essential question to understanding Amazonian carbon balance. |
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BIOMASA CARBONO ALMACENAMIENTO ALOMETRIA MEDICION MODELOS CICLO DEL CARBONO ECUACIONES ALOMETRICAS AGRICULTURA USO DE LA TIERRA BIOMASS CARBON STORAGE MEASUREMENT MODELS CARBON CYCLE FORESTS LAND USE |
author |
75850 Hammond Pyle, Elizabeth Harvard University, Cambridge, Massachusetts, USA 116073 Santoni, Gregory W. (autor/a) Harvard University, Cambridge, Massachusetts, USA 98538 Nascimento, Henrique E.M. (autor/a) National Institute for Amazonian Research, Manaus, Brazil 79372 Hutyra, Lucy R. (autor/a) Harvard University : University of Washington 128756 Vieira, Simone Aparecida (autor/a) Universidade de Sao Paulo, Piracicaba, Brazil 60510 Curran, Daniel J. (autor/a) Harvard University, Cambridge, Massachusetts, USA 76112 Haren, Joost van (autor/a) University of Arizona, Tuscon, Arizona, USA 115234 Saleska, Scott R. (autor/a) University of Arizona, Tuscon, Arizona, USA 57417 Chow, V.Y. (autor/a) Harvard University, Cambridge, Massachusetts, USA 54216 Carmago, Plinio B. (autor/a) Universidade de Sao Paulo, Piracicaba, Brazil 85301 Laurance, William F. (autor/a) National Institute for Amazonian Research, Manaus, Brazil : 6Smithsonian Tropical Research Institute, Balboa, Panama 131937 Wofsy, Steven C. (autor/a) Harvard University, Cambridge, Massachusetts, USA |
author_facet |
75850 Hammond Pyle, Elizabeth Harvard University, Cambridge, Massachusetts, USA 116073 Santoni, Gregory W. (autor/a) Harvard University, Cambridge, Massachusetts, USA 98538 Nascimento, Henrique E.M. (autor/a) National Institute for Amazonian Research, Manaus, Brazil 79372 Hutyra, Lucy R. (autor/a) Harvard University : University of Washington 128756 Vieira, Simone Aparecida (autor/a) Universidade de Sao Paulo, Piracicaba, Brazil 60510 Curran, Daniel J. (autor/a) Harvard University, Cambridge, Massachusetts, USA 76112 Haren, Joost van (autor/a) University of Arizona, Tuscon, Arizona, USA 115234 Saleska, Scott R. (autor/a) University of Arizona, Tuscon, Arizona, USA 57417 Chow, V.Y. (autor/a) Harvard University, Cambridge, Massachusetts, USA 54216 Carmago, Plinio B. (autor/a) Universidade de Sao Paulo, Piracicaba, Brazil 85301 Laurance, William F. (autor/a) National Institute for Amazonian Research, Manaus, Brazil : 6Smithsonian Tropical Research Institute, Balboa, Panama 131937 Wofsy, Steven C. (autor/a) Harvard University, Cambridge, Massachusetts, USA |
author_sort |
75850 Hammond Pyle, Elizabeth Harvard University, Cambridge, Massachusetts, USA |
title |
Dynamics of carbon, biomass, and structure in two Amazonian forests |
title_short |
Dynamics of carbon, biomass, and structure in two Amazonian forests |
title_full |
Dynamics of carbon, biomass, and structure in two Amazonian forests |
title_fullStr |
Dynamics of carbon, biomass, and structure in two Amazonian forests |
title_full_unstemmed |
Dynamics of carbon, biomass, and structure in two Amazonian forests |
title_sort |
dynamics of carbon, biomass, and structure in two amazonian forests |
publisher |
Washington, D.C. American Geophysical Union |
publishDate |
2008 |
url |
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2007JG000592 |
work_keys_str_mv |
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_version_ |
1764981107032326144 |
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KOHA-OAI-BVE:1362472023-04-30T12:51:04ZDynamics of carbon, biomass, and structure in two Amazonian forests 75850 Hammond Pyle, Elizabeth Harvard University, Cambridge, Massachusetts, USA 116073 Santoni, Gregory W. (autor/a) Harvard University, Cambridge, Massachusetts, USA 98538 Nascimento, Henrique E.M. (autor/a) National Institute for Amazonian Research, Manaus, Brazil 79372 Hutyra, Lucy R. (autor/a) Harvard University : University of Washington 128756 Vieira, Simone Aparecida (autor/a) Universidade de Sao Paulo, Piracicaba, Brazil 60510 Curran, Daniel J. (autor/a) Harvard University, Cambridge, Massachusetts, USA 76112 Haren, Joost van (autor/a) University of Arizona, Tuscon, Arizona, USA 115234 Saleska, Scott R. (autor/a) University of Arizona, Tuscon, Arizona, USA 57417 Chow, V.Y. (autor/a) Harvard University, Cambridge, Massachusetts, USA 54216 Carmago, Plinio B. (autor/a) Universidade de Sao Paulo, Piracicaba, Brazil 85301 Laurance, William F. (autor/a) National Institute for Amazonian Research, Manaus, Brazil : 6Smithsonian Tropical Research Institute, Balboa, Panama 131937 Wofsy, Steven C. (autor/a) Harvard University, Cambridge, Massachusetts, USA textWashington, D.C. American Geophysical Union2008engpdfAmazon forests are potentially globally significant sources or sinks for atmospheric carbon dioxide. In this study, we characterize the spatial trends in carbon storage and fluxes in both live and dead biomass (necromass) in two Amazonian forests, the Biological Dynamic of Forest Fragments Project (BDFFP), near Manaus, Amazonas, and the Tapajós National Forest (TNF) near Santarém, Pará. We assessed coarse woody debris (CWD) stocks, tree growth, mortality, and recruitment in ground-based plots distributed across the terra firme forest at both sites. Carbon dynamics were similar within each site, but differed significantly between the sites. The BDFFP and the TNF held comparable live biomass (167 ± 7.6 MgC·ha−1 versus 149 ± 6.0 MgC·ha−1, respectively), but stocks of CWD were 2.5 times larger at TNF (16.2 ± 1.5 MgC·ha−1 at BDFFP, versus 40.1 ± 3.9 MgC·ha−1 at TNF). A model of current forest dynamics suggests that the BDFFP was close to carbon balance, and its size class structure approximated a steady state. The TNF, by contrast, showed rapid carbon accrual to live biomass (3.24 ± 0.22 MgC·ha−1·a−1 in TNF, 2.59 ± 0.16 MgC·ha−1·a−1 in BDFFP), which was more than offset by losses from large stocks of CWD, as well as ongoing shifts of biomass among size classes. This pattern in the TNF suggests recovery from a significant disturbance. The net loss of carbon from the TNF will likely last 10–15 years after the initial disturbance (controlled by the rate of decay of coarse woody debris), followed by uptake of carbon as the forest size class structure and composition continue to shift. The frequency and longevity of forests showing such disequilibruim dynamics within the larger matrix of the Amazon remains an essential question to understanding Amazonian carbon balance.Bibliografía páginas 18-20Amazon forests are potentially globally significant sources or sinks for atmospheric carbon dioxide. In this study, we characterize the spatial trends in carbon storage and fluxes in both live and dead biomass (necromass) in two Amazonian forests, the Biological Dynamic of Forest Fragments Project (BDFFP), near Manaus, Amazonas, and the Tapajós National Forest (TNF) near Santarém, Pará. We assessed coarse woody debris (CWD) stocks, tree growth, mortality, and recruitment in ground-based plots distributed across the terra firme forest at both sites. Carbon dynamics were similar within each site, but differed significantly between the sites. The BDFFP and the TNF held comparable live biomass (167 ± 7.6 MgC·ha−1 versus 149 ± 6.0 MgC·ha−1, respectively), but stocks of CWD were 2.5 times larger at TNF (16.2 ± 1.5 MgC·ha−1 at BDFFP, versus 40.1 ± 3.9 MgC·ha−1 at TNF). A model of current forest dynamics suggests that the BDFFP was close to carbon balance, and its size class structure approximated a steady state. The TNF, by contrast, showed rapid carbon accrual to live biomass (3.24 ± 0.22 MgC·ha−1·a−1 in TNF, 2.59 ± 0.16 MgC·ha−1·a−1 in BDFFP), which was more than offset by losses from large stocks of CWD, as well as ongoing shifts of biomass among size classes. This pattern in the TNF suggests recovery from a significant disturbance. The net loss of carbon from the TNF will likely last 10–15 years after the initial disturbance (controlled by the rate of decay of coarse woody debris), followed by uptake of carbon as the forest size class structure and composition continue to shift. The frequency and longevity of forests showing such disequilibruim dynamics within the larger matrix of the Amazon remains an essential question to understanding Amazonian carbon balance.BIOMASA CARBONOALMACENAMIENTOALOMETRIAMEDICION MODELOSCICLO DEL CARBONOECUACIONES ALOMETRICASAGRICULTURA USO DE LA TIERRABIOMASSCARBONSTORAGEMEASUREMENTMODELSCARBON CYCLEFORESTSLAND USEhttps://agupubs.onlinelibrary.wiley.com/doi/10.1029/2007JG000592 |