|
|
Registro Completo |
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
14/03/2016 |
Data da última atualização: |
18/03/2016 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
ASSUNÇÃO, C. M.; MENDES, V. R. A.; PEREIRA, J. V. T. do N.; SOUZA, E. D.; GOMES, E. T.; CARVALHO, B. C. de; VIANA, J. H. M.; CAMARGO, L. S. de A. |
Afiliação: |
CAROLINA MARINHO DE ASSUNÇÃO, UFJF; VIVIAN RACHEL ARAÚJO MENDES, UFV; JHONATA VIEIRA TAVARES DO NASCIMENTO PEREIRA, UFES; ELIZA DINIZ DE SOUZA, UFES; ELIZABETE TEIXEIRA GOMES, UFRPE; BRUNO CAMPOS DE CARVALHO, CNPGL; JOAO HENRIQUE MOREIRA VIANA, CNPGL; LUIZ SERGIO DE ALMEIDA CAMARGO, CNPGL. |
Título: |
Comparação da eficiência de diferentes diluentes na criopreservação de sêmen de touros jovens da raça Holandesa. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
In: CONGRESSO INTERNACIONAL DO LEITE, 13., 2015, Porto Alegre. Anais... Juiz de Fora: Embrapa Gado de Leite, 2015. |
Páginas: |
4 p. |
Idioma: |
Português |
Palavras-Chave: |
Botu-bov; Citrato-gema de ovo; Congelação; Touros; Tris-gema de ovo. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 00846naa a2200265 a 4500 001 2040814 005 2016-03-18 008 2015 bl uuuu u00u1 u #d 100 1 $aASSUNÇÃO, C. M. 245 $aComparação da eficiência de diferentes diluentes na criopreservação de sêmen de touros jovens da raça Holandesa. 260 $c2015 300 $a4 p. 653 $aBotu-bov 653 $aCitrato-gema de ovo 653 $aCongelação 653 $aTouros 653 $aTris-gema de ovo 700 1 $aMENDES, V. R. A. 700 1 $aPEREIRA, J. V. T. do N. 700 1 $aSOUZA, E. D. 700 1 $aGOMES, E. T. 700 1 $aCARVALHO, B. C. de 700 1 $aVIANA, J. H. M. 700 1 $aCAMARGO, L. S. de A. 773 $tIn: CONGRESSO INTERNACIONAL DO LEITE, 13., 2015, Porto Alegre. Anais... Juiz de Fora: Embrapa Gado de Leite, 2015.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Gado de Leite (CNPGL) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
Registro Completo
Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Territorial. |
Data corrente: |
28/07/2015 |
Data da última atualização: |
26/05/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
HUNTER, M. O.; KELLE, M.; MORTON, D.; COOK, B.; LEFSKY, M.; DUCEY, M.; SALESKA, S.; OLIVEIRA JUNIOR, R. C. de; SCHIETTI, J. |
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. |
Título: |
Structural dynamics of tropical moist forest gaps. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
Plos One, v. 10, n.7, p. 1-19, jul. 2015. |
DOI: |
10.1371/journal.pone.0132144 |
Idioma: |
Inglês Português |
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 |
Palavras-Chave: |
Landscape scale. |
Thesaurus NAL: |
Tropical forests. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/127064/1/4541.pdf
|
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.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Amazônia Oriental (CPATU) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|