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 (...
| Autor principal: | Pyle, Elizabeth Hammond |
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| Outros Autores: | Santoni, Gregory W., Nascimento, Henrique Eduardo Mendonça, Hutyra, Lucy R., Vieira, Simone Aparecida, Curran, Daniel J., van Haren, Joost L.M., Saleska, Scott Reid, Chow, Victoria Y., Carmago, Plinio B., Laurance, William F., Wofsy, Steven C. |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Journal of Geophysical Research: Biogeosciences
2020
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https://repositorio.inpa.gov.br/handle/1/18451 |
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oai:repositorio:1-18451 |
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oai:repositorio:1-18451 Dynamics of carbon, biomass, and structure in two Amazonian forests Pyle, Elizabeth Hammond Santoni, Gregory W. Nascimento, Henrique Eduardo Mendonça Hutyra, Lucy R. Vieira, Simone Aparecida Curran, Daniel J. van Haren, Joost L.M. Saleska, Scott Reid Chow, Victoria Y. Carmago, Plinio B. Laurance, William F. Wofsy, Steven C. Biomass Carbon Balance Carbon Dioxide Carbon Sequestration Carbon Sink Coarse Woody Debris Forest Dynamics Forest Ecosystem Growth Rate Longevity Mortality Size Structure Amazonia South America 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. Copyright 2008 by the American Geophysical Union. 2020-06-15T21:55:13Z 2020-06-15T21:55:13Z 2009 Artigo https://repositorio.inpa.gov.br/handle/1/18451 10.1029/2007JG000592 en Volume 114, Número 1 Restrito Journal of Geophysical Research: Biogeosciences |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Biomass Carbon Balance Carbon Dioxide Carbon Sequestration Carbon Sink Coarse Woody Debris Forest Dynamics Forest Ecosystem Growth Rate Longevity Mortality Size Structure Amazonia South America |
| spellingShingle |
Biomass Carbon Balance Carbon Dioxide Carbon Sequestration Carbon Sink Coarse Woody Debris Forest Dynamics Forest Ecosystem Growth Rate Longevity Mortality Size Structure Amazonia South America Pyle, Elizabeth Hammond Dynamics of carbon, biomass, and structure in two Amazonian forests |
| topic_facet |
Biomass Carbon Balance Carbon Dioxide Carbon Sequestration Carbon Sink Coarse Woody Debris Forest Dynamics Forest Ecosystem Growth Rate Longevity Mortality Size Structure Amazonia South America |
| description |
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. Copyright 2008 by the American Geophysical Union. |
| format |
Artigo |
| author |
Pyle, Elizabeth Hammond |
| author2 |
Santoni, Gregory W. Nascimento, Henrique Eduardo Mendonça Hutyra, Lucy R. Vieira, Simone Aparecida Curran, Daniel J. van Haren, Joost L.M. Saleska, Scott Reid Chow, Victoria Y. Carmago, Plinio B. Laurance, William F. Wofsy, Steven C. |
| author2Str |
Santoni, Gregory W. Nascimento, Henrique Eduardo Mendonça Hutyra, Lucy R. Vieira, Simone Aparecida Curran, Daniel J. van Haren, Joost L.M. Saleska, Scott Reid Chow, Victoria Y. Carmago, Plinio B. Laurance, William F. Wofsy, Steven C. |
| 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 |
Journal of Geophysical Research: Biogeosciences |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/18451 |
| _version_ |
1787142970765475840 |
| score |
11.653393 |