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MORTON, D. C.; RUBIO, J.; COOK, B. D.; GASTELLU-ETCHEGORRY, J-P; LONGO, M.; CHOI, H.; HUNTER, M.; KELLER, M.. |
The complex three-dimensional (3-D) structure of tropical forests generates a diversity of light environments for canopy and understory trees. Understanding diurnal and seasonal changes in light availability is critical for interpreting measurements of net ecosystem exchange and improving ecosystem models. Here, we used the Discrete Anisotropic Radiative Transfer (DART) model to simulate leaf absorption of photosynthetically active radiation (lAPAR) for an Amazon forest. The 3-D model scene was developed from airborne lidar data, and local measurements of leaf reflectance, aerosols, and PAR were used to model lAPAR under direct and diffuse illumination conditions. Simulated lAPAR under clear-sky and cloudy conditions was corrected for light saturation... |
Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Tropical forests. |
Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/1046806 |
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STARK, S. C.; ENQUIST, B. J.; SALESKA, S. R.; LEITOLD, V.; SCHIETTI, J.; CASTILHO, C. V. de; COSTA, F. R. C.; ALVES, L. F.; LONGO, M.; KELLER, M.; LEFSKY, M. A.; SHIMABUKURO, Y. E.; OLIVEIRA JUNIOR, R. C. de; CAMARGO, P. B.. |
2013 |
Tipo: Artigo em anais de congresso (ALICE) |
Palavras-chave: Forest. |
Ano: 2013 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/982693 |
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SANTOS, M. N. dos; PINAGÉ, E. R.; LONGO, M.; ARAUJO, L. S. de; ADAMI, M.; MORTON, D.; KELLER, M.. |
Forest fragmentation divides forest areas into smaller discontinuous fragments, increasing the forest edge area that experiences different environmental conditions from interior areas [1]. According to one study, logging and deforestation generate ~32,000 and 38,000 km of new forest edge each year in the Brazilian Amazon [2]. Nearly 20% of the world?s forests are within 100m of agriculture, urban, or other non-forest land uses [3]. Forest edges suffer changes in microclimate, with reduced moisture and increased variability of temperature compared to the forest interiors. In addition, winds cause greater structural damage near the forest ends and affect other ecological processes such as pollination, seed dispersal, nutrient cycling and carbon storage. The... |
Tipo: Artigo em anais de congresso (ALICE) |
Palavras-chave: Edge effect; Forest degradation; Airborne lidar; Amazon. |
Ano: 2015 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/1034397 |
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WOFSY, S.; HAYEK, M.; SALESKA, S.; LONGO, M.; MOORCROFT, P.; MUNGER, J.; RESTREPO-COUPE, N.; WIEDEMANN, K.; SILVA, R. da; CAMARGO, P.; COSME, R.; ALVES, L.. |
2014 |
Tipo: Resumo em anais de congresso (ALICE) |
Palavras-chave: Floresta; Florest; Variação climática; Climatic variations; Amazônia; Amazon. |
Ano: 2014 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/1003890 |
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