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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Territorial. |
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Data corrente: |
28/07/2015 |
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Data da última atualização: |
26/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
HUNTER, M. O.; KELLE, M.; MORTON, D.; COOK, B.; LEFSKY, M.; DUCEY, M.; SALESKA, S.; OLIVEIRA JUNIOR, R. C. de; SCHIETTI, J. |
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Afiliação: |
MARIA O. HUNTER, UNIVERSITY OF NEW HAMPSHIRE; MICHAEL KELLER, USDA/PESQUISADOR VISITANTE CNPM; DOUGLAS MORTON, NASA; BRUCE COOK, NASA; MICHAEL LEFSKY, COLORADO STATE UNIVERSITY; MARK DUCEY, UNIVERSITY OF NEW HAMPSHIRE; SCOTT SALESKA, UNIVERSITY OF ARIZONA; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU; JULIANA SCHIETTI, INPA. |
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Título: |
Structural dynamics of tropical moist forest gaps. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Plos One, v. 10, n.7, p. 1-19, jul. 2015. |
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DOI: |
10.1371/journal.pone.0132144 |
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Idioma: |
Inglês
Português |
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Conteúdo: |
Gap phase dynamics are the dominant mode of forest turnover in tropical forests. However, gap processes are infrequently studied at the landscape scale. Airborne lidar data offer detailed information on three-dimensional forest structure, providing a means to characterize fine-scale (1 m) processes in tropical forests over large areas. Lidar-based estimates of forest structure (top down) differ from traditional field measurements (bottom up), and necessitate clear-cut definitions unencumbered by the wisdom of a field observer.We offer a new definition of a forest gap that is driven by forest dynamics and consistent with precise ranging measurements from airborne lidar data and tall, multi-layered tropical forest structure. We used 1000 ha of multi-temporal lidar data (2008, 2012) at two sites, the Tapajos National Forest and Ducke Reserve, to study gap dynamics in the Brazilian Amazon. Here, we identified dynamic gaps as contiguous areas of significant growth, that correspond to areas > 10 m2, with height <10 m. Applying the dynamic definition at both sites, we found over twice as much area in gap at Tapajos National Forest (4.8 %) as compared to Ducke Reserve (2.0 %). On average, gaps were smaller at Ducke Reserve and closed slightly more rapidly, with estimated height gains of 1.2 m y-1 versus 1.1 m y-1 at Tapajos. At the Tapajos site, height growth in gap centers was greater than the average height gain in gaps (1.3 m y-1 versus 1.1 m y-1). Rates of height growth between lidar acquisitions reflect the interplay between gap edge mortality, horizontal ingrowth and gap size at the two sites. We estimated that approximately 10%of gap area closed via horizontal ingrowth at Ducke Reserve as opposed to 6 %at Tapajos National Forest. Height loss (interpreted as repeat damage and/or mortality) and horizontal ingrowth accounted for similar proportions of gap area at Ducke Reserve (13% and 10 %, respectively). At Tapajos, height loss had a much stronger signal (23 %versus 6 %) within gaps. Both sites demonstrate limited gap contagiousness defined by an increase in the likelihood of mortality in the immediate vicinity (~6 m) of existing gaps. MenosGap phase dynamics are the dominant mode of forest turnover in tropical forests. However, gap processes are infrequently studied at the landscape scale. Airborne lidar data offer detailed information on three-dimensional forest structure, providing a means to characterize fine-scale (1 m) processes in tropical forests over large areas. Lidar-based estimates of forest structure (top down) differ from traditional field measurements (bottom up), and necessitate clear-cut definitions unencumbered by the wisdom of a field observer.We offer a new definition of a forest gap that is driven by forest dynamics and consistent with precise ranging measurements from airborne lidar data and tall, multi-layered tropical forest structure. We used 1000 ha of multi-temporal lidar data (2008, 2012) at two sites, the Tapajos National Forest and Ducke Reserve, to study gap dynamics in the Brazilian Amazon. Here, we identified dynamic gaps as contiguous areas of significant growth, that correspond to areas > 10 m2, with height <10 m. Applying the dynamic definition at both sites, we found over twice as much area in gap at Tapajos National Forest (4.8 %) as compared to Ducke Reserve (2.0 %). On average, gaps were smaller at Ducke Reserve and closed slightly more rapidly, with estimated height gains of 1.2 m y-1 versus 1.1 m y-1 at Tapajos. At the Tapajos site, height growth in gap centers was greater than the average height gain in gaps (1.3 m y-1 versus 1.1 m y-1). Rates of height growth between ... Mostrar Tudo |
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Palavras-Chave: |
Landscape scale. |
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Thesaurus Nal: |
Tropical forests. |
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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/item/127064/1/4541.pdf
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Marc: |
LEADER 02858naa a2200253 a 4500
001 2031252
005 2022-05-26
008 2015 bl uuuu u00u1 u #d
024 7 $a10.1371/journal.pone.0132144$2DOI
100 1 $aHUNTER, M. O.
245 $aStructural dynamics of tropical moist forest gaps.$h[electronic resource]
260 $c2015
520 $aGap phase dynamics are the dominant mode of forest turnover in tropical forests. However, gap processes are infrequently studied at the landscape scale. Airborne lidar data offer detailed information on three-dimensional forest structure, providing a means to characterize fine-scale (1 m) processes in tropical forests over large areas. Lidar-based estimates of forest structure (top down) differ from traditional field measurements (bottom up), and necessitate clear-cut definitions unencumbered by the wisdom of a field observer.We offer a new definition of a forest gap that is driven by forest dynamics and consistent with precise ranging measurements from airborne lidar data and tall, multi-layered tropical forest structure. We used 1000 ha of multi-temporal lidar data (2008, 2012) at two sites, the Tapajos National Forest and Ducke Reserve, to study gap dynamics in the Brazilian Amazon. Here, we identified dynamic gaps as contiguous areas of significant growth, that correspond to areas > 10 m2, with height <10 m. Applying the dynamic definition at both sites, we found over twice as much area in gap at Tapajos National Forest (4.8 %) as compared to Ducke Reserve (2.0 %). On average, gaps were smaller at Ducke Reserve and closed slightly more rapidly, with estimated height gains of 1.2 m y-1 versus 1.1 m y-1 at Tapajos. At the Tapajos site, height growth in gap centers was greater than the average height gain in gaps (1.3 m y-1 versus 1.1 m y-1). Rates of height growth between lidar acquisitions reflect the interplay between gap edge mortality, horizontal ingrowth and gap size at the two sites. We estimated that approximately 10%of gap area closed via horizontal ingrowth at Ducke Reserve as opposed to 6 %at Tapajos National Forest. Height loss (interpreted as repeat damage and/or mortality) and horizontal ingrowth accounted for similar proportions of gap area at Ducke Reserve (13% and 10 %, respectively). At Tapajos, height loss had a much stronger signal (23 %versus 6 %) within gaps. Both sites demonstrate limited gap contagiousness defined by an increase in the likelihood of mortality in the immediate vicinity (~6 m) of existing gaps.
650 $aTropical forests
653 $aLandscape scale
700 1 $aKELLE, M.
700 1 $aMORTON, D.
700 1 $aCOOK, B.
700 1 $aLEFSKY, M.
700 1 $aDUCEY, M.
700 1 $aSALESKA, S.
700 1 $aOLIVEIRA JUNIOR, R. C. de
700 1 $aSCHIETTI, J.
773 $tPlos One$gv. 10, n.7, p. 1-19, jul. 2015.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agroindústria de Alimentos; Embrapa Clima Temperado; Embrapa Pecuária Sul; Embrapa Pesca e Aquicultura; Embrapa Unidades Centrais. |
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Data corrente: |
10/03/2021 |
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Data da última atualização: |
20/04/2021 |
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Tipo da produção científica: |
Folder/Folheto/Cartilha |
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Autoria: |
KROLOW, A. C. R.; NALERIO, E. S.; SAMARY, F. T.; LIMA, L. K. F. de (ed.). |
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Afiliação: |
ANA CRISTINA RICHTER KROLOW, CPACT; ELEN SILVEIRA NALERIO, CPPSUL; FERNANDO TEIXEIRA SAMARY, CTAA; LEANDRO KANAMARU FRANCO DE LIMA, CNPASA. |
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Título: |
Industry, innovation and infrastructure: contributions of Embrapa. |
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Título original: |
Indústria, inovação e infraestrutura: contribuições da Embrapa. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Brasília, DF: Embrapa, 2020. |
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Páginas: |
49 p. |
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Descrição Física: |
PDF: il.color. |
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Série: |
(Sustainable development goal, 9). |
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ISBN: |
978-65-86056-21-1 |
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Idioma: |
Inglês |
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Notas: |
Translated by Paulo de Holanda Morais. |
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Conteúdo: |
This work aims to discuss and present Embrapa?s contributions to SDG 9. Among the targets of SDG 9 in the United Nations? documents are: 9.5 ?Enhance scientific research, upgrade the technological capabilities of industrial sectors in all countries, in particular developing countries, including by 2030, encouraging innovation and substantially increasing the number of research and development workers per 1 million people and public and private research and development. Also, 9.b ? Support domestic technology development, research and innovation in developing countries including by ensuring a conductive policy environment for, inter alia, industrial diversification and value addition to commodities. |
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Thesagro: |
Agricultura Familiar; Alimento; Desenvolvimento Sustentável; Indústria Agrícola; Inovação; Pesquisa Agrícola; Produção de Alimentos; Segurança Alimentar; Suprimento de Alimento; Tecnologia Agrícola. |
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Thesaurus NAL: |
Agricultural industry; Agricultural research; Innovation adoption; Sustainable agriculture; Sustainable development. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/221735/1/SDG-09.pdf
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Marc: |
LEADER 01939nam a2200385 a 4500
001 2130564
005 2021-04-20
008 2020 bl uuuu u0uu1 u #d
020 $a978-65-86056-21-1
100 1 $aKROLOW, A. C. R.
240 $aIndústria, inovação e infraestrutura: contribuições da Embrapa.
245 $aIndustry, innovation and infrastructure$bcontributions of Embrapa.$h[electronic resource]
260 $aBrasília, DF: Embrapa$c2020
300 $a49 p.$cPDF: il.color.
490 $a(Sustainable development goal, 9).
500 $aTranslated by Paulo de Holanda Morais.
520 $aThis work aims to discuss and present Embrapa?s contributions to SDG 9. Among the targets of SDG 9 in the United Nations? documents are: 9.5 ?Enhance scientific research, upgrade the technological capabilities of industrial sectors in all countries, in particular developing countries, including by 2030, encouraging innovation and substantially increasing the number of research and development workers per 1 million people and public and private research and development. Also, 9.b ? Support domestic technology development, research and innovation in developing countries including by ensuring a conductive policy environment for, inter alia, industrial diversification and value addition to commodities.
650 $aAgricultural industry
650 $aAgricultural research
650 $aInnovation adoption
650 $aSustainable agriculture
650 $aSustainable development
650 $aAgricultura Familiar
650 $aAlimento
650 $aDesenvolvimento Sustentável
650 $aIndústria Agrícola
650 $aInovação
650 $aPesquisa Agrícola
650 $aProdução de Alimentos
650 $aSegurança Alimentar
650 $aSuprimento de Alimento
650 $aTecnologia Agrícola
700 1 $aNALERIO, E. S.
700 1 $aSAMARY, F. T.
700 1 $aLIMA, L. K. F. de
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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