Production and stock of coarse woody debris across a hydro-edaphic gradient of oligotrophic forests in the northern Brazilian Amazon
Most studies on coarse woody debris (CWD) in Brazilian Amazonia have been done in disturbed and undisturbed upland forests. However, oligotrophic forest types occupying seasonal flooding environments have been neglected, although they occupy about one-third of the Amazon region. We examined the effe...
| Autor principal: | Silva, Luis Felipe Santos Gonçalves |
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| Outros Autores: | Castilho, Carolina Volkmer de, Cavalcante, Claymir de Oliveira, Pimentel, Tânia Pena, Fearnside, Philip Martin, Barbosa, Reinaldo Imbrozio |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Forest Ecology and Management
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/17358 |
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oai:repositorio:1-17358 |
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oai:repositorio:1-17358 Production and stock of coarse woody debris across a hydro-edaphic gradient of oligotrophic forests in the northern Brazilian Amazon Silva, Luis Felipe Santos Gonçalves Castilho, Carolina Volkmer de Cavalcante, Claymir de Oliveira Pimentel, Tânia Pena Fearnside, Philip Martin Barbosa, Reinaldo Imbrozio Biomass Debris Floods Uncertainty Analysis Brazilian Amazonia Coarse Woody Debris Environmental Conditions Environmental Gradient Hydro-edaphic Determinants Necromass Oligotrophic Forests Undisturbed Forests Forestry Biomass Carbon Sequestration Coarse Woody Debris Environmental Conditions Environmental Gradient Montane Forest Oligotrophic Environment Amazonia Branco Basin Brasil Rio Negro [south America] Roraima Virua National Park Most studies on coarse woody debris (CWD) in Brazilian Amazonia have been done in disturbed and undisturbed upland forests. However, oligotrophic forest types occupying seasonal flooding environments have been neglected, although they occupy about one-third of the Amazon region. We examined the effect of an environmental gradient with different hydro-edaphic features on production and stock of CWD in an area of the Rio Negro-Rio Branco basin, in Brazil's state of Roraima. We used 60km of trails (production) and 30 permanent plots (stock) in a sampling grid established at Viruá National Park. Our study demonstrated that production and stock of CWD carbon are the lowest in all of Amazonia. The highest CWD carbon production was found in open-canopy submontane rainforest (0.58±0.63MgCha-1yr-1), which occur in environments that are free of any influence of seasonal flooding. The lowest stocks of CWD carbon (0.35±0.30MgCha-1) was associated with low tree biomass in forest types occurring on sandy soils that are strongly influenced by seasonal flooding. CWD stocks in oligotrophic forests at Viruá are partially explained (~21%) by tree biomass, which is determined by different environmental conditions across hydro-edaphic gradients. Reference values (CWD carbon as a percentage of tree carbon) were among the lowest in Amazonia (0.91-4.38%), with lower values being associated with formations with low production and stock of CWD. This finding suggests that values vary among oligotrophic forest types and that separate reference values should be adopted for estimates of undisturbed forest carbon stocks in the different ecosystems in Brazilian Amazonia. Different reference values represent the variability of CWD among forest types and contribute to reducing uncertainties in current estimates of carbon stock in Amazonia. © 2015 Elsevier B.V. 2020-06-15T21:41:41Z 2020-06-15T21:41:41Z 2016 Artigo https://repositorio.inpa.gov.br/handle/1/17358 10.1016/j.foreco.2015.12.045 en Volume 364, Pags. 1-9 Restrito Forest Ecology and Management |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Biomass Debris Floods Uncertainty Analysis Brazilian Amazonia Coarse Woody Debris Environmental Conditions Environmental Gradient Hydro-edaphic Determinants Necromass Oligotrophic Forests Undisturbed Forests Forestry Biomass Carbon Sequestration Coarse Woody Debris Environmental Conditions Environmental Gradient Montane Forest Oligotrophic Environment Amazonia Branco Basin Brasil Rio Negro [south America] Roraima Virua National Park |
| spellingShingle |
Biomass Debris Floods Uncertainty Analysis Brazilian Amazonia Coarse Woody Debris Environmental Conditions Environmental Gradient Hydro-edaphic Determinants Necromass Oligotrophic Forests Undisturbed Forests Forestry Biomass Carbon Sequestration Coarse Woody Debris Environmental Conditions Environmental Gradient Montane Forest Oligotrophic Environment Amazonia Branco Basin Brasil Rio Negro [south America] Roraima Virua National Park Silva, Luis Felipe Santos Gonçalves Production and stock of coarse woody debris across a hydro-edaphic gradient of oligotrophic forests in the northern Brazilian Amazon |
| topic_facet |
Biomass Debris Floods Uncertainty Analysis Brazilian Amazonia Coarse Woody Debris Environmental Conditions Environmental Gradient Hydro-edaphic Determinants Necromass Oligotrophic Forests Undisturbed Forests Forestry Biomass Carbon Sequestration Coarse Woody Debris Environmental Conditions Environmental Gradient Montane Forest Oligotrophic Environment Amazonia Branco Basin Brasil Rio Negro [south America] Roraima Virua National Park |
| description |
Most studies on coarse woody debris (CWD) in Brazilian Amazonia have been done in disturbed and undisturbed upland forests. However, oligotrophic forest types occupying seasonal flooding environments have been neglected, although they occupy about one-third of the Amazon region. We examined the effect of an environmental gradient with different hydro-edaphic features on production and stock of CWD in an area of the Rio Negro-Rio Branco basin, in Brazil's state of Roraima. We used 60km of trails (production) and 30 permanent plots (stock) in a sampling grid established at Viruá National Park. Our study demonstrated that production and stock of CWD carbon are the lowest in all of Amazonia. The highest CWD carbon production was found in open-canopy submontane rainforest (0.58±0.63MgCha-1yr-1), which occur in environments that are free of any influence of seasonal flooding. The lowest stocks of CWD carbon (0.35±0.30MgCha-1) was associated with low tree biomass in forest types occurring on sandy soils that are strongly influenced by seasonal flooding. CWD stocks in oligotrophic forests at Viruá are partially explained (~21%) by tree biomass, which is determined by different environmental conditions across hydro-edaphic gradients. Reference values (CWD carbon as a percentage of tree carbon) were among the lowest in Amazonia (0.91-4.38%), with lower values being associated with formations with low production and stock of CWD. This finding suggests that values vary among oligotrophic forest types and that separate reference values should be adopted for estimates of undisturbed forest carbon stocks in the different ecosystems in Brazilian Amazonia. Different reference values represent the variability of CWD among forest types and contribute to reducing uncertainties in current estimates of carbon stock in Amazonia. © 2015 Elsevier B.V. |
| format |
Artigo |
| author |
Silva, Luis Felipe Santos Gonçalves |
| author2 |
Castilho, Carolina Volkmer de Cavalcante, Claymir de Oliveira Pimentel, Tânia Pena Fearnside, Philip Martin Barbosa, Reinaldo Imbrozio |
| author2Str |
Castilho, Carolina Volkmer de Cavalcante, Claymir de Oliveira Pimentel, Tânia Pena Fearnside, Philip Martin Barbosa, Reinaldo Imbrozio |
| title |
Production and stock of coarse woody debris across a hydro-edaphic gradient of oligotrophic forests in the northern Brazilian Amazon |
| title_short |
Production and stock of coarse woody debris across a hydro-edaphic gradient of oligotrophic forests in the northern Brazilian Amazon |
| title_full |
Production and stock of coarse woody debris across a hydro-edaphic gradient of oligotrophic forests in the northern Brazilian Amazon |
| title_fullStr |
Production and stock of coarse woody debris across a hydro-edaphic gradient of oligotrophic forests in the northern Brazilian Amazon |
| title_full_unstemmed |
Production and stock of coarse woody debris across a hydro-edaphic gradient of oligotrophic forests in the northern Brazilian Amazon |
| title_sort |
production and stock of coarse woody debris across a hydro-edaphic gradient of oligotrophic forests in the northern brazilian amazon |
| publisher |
Forest Ecology and Management |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/17358 |
| _version_ |
1787142764135186432 |
| score |
11.755432 |