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Registros recuperados: 11
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Age-dependent leaf function and consequences for carbon uptake of leaves, branches, and the canopy during the dry season in an Amazon evergreen forest. Repositório Alice
ALBERT, L. P.; WU, J.; PROHASKA, N.; CAMARGO, P. B.; HUXMAN, T. E.; TRIBUZY, E.; IVANOV, V.; OLIVEIRA, R.; GARCIA, S.; SMITH, M. N.; OLIVEIRA JUNIOR, R. C. de; RESTREPO-COUPE, N.; SILVA, R. da; STARK, S. C.; MARTINS, G.; PENHA, D. V.; SALESKA, S. R..
bitstream/item/164605/1/LOREN-2017-ESA.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Folha; Carbono; Absorção; Floresta tropical.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1076610
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Bothrops atrox in captivity, change isotopic composition in tissues collected from different environments of the eastern Amazon. Repositório Alice
MARTINEZ, M. G.; CHALKIDIS, H. de M.; MOURA, A. M.; OLIVEIRA JUNIOR, R. C. de; CAMARGO, P. B..
The Bothrops Atrox is little studied because it is sympatric to Amazonian animals. Very little is known about the ecology and natural history of this species. It has a generalist diet and the distribution of this species is very wide. The adults forage mostly on the ground, while the younger animals prefer to stay on the vegetation. They are easily found in the rainy months in areas near lakes or that are seasonally flooded and they are difficult to find in the driest months, a period when there is less availability of prey in these environments. Due to its aggressiveness it is considered one of the most feared snakes in South America and in the eastern Amazon, being responsible for the largest number of snakebites in the region. Through measuring stable...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Cobra; Animal; Composição isotópica; Tecido; Amazônia.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1004872
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Changes in soil carbon, nitrogen, and phosphorus due to land-use changes in Brazil. Repositório Alice
GROPPO, J. D.; LINS, S. R. M.; CAMARGO, P. B.; ASSAD, E. D.; PINTO, H. S.; MARTINS, S. C.; SALGADO, P. R.; EVANGELISTA, B.; VASCONCELLOS, E.; SANO, E. E.; PAVÃO, E.; LUNA, R.; MARTINELLI, L. A..
Abstract. In this paper, soil carbon, nitrogen and phosphorus concentrations and stocks were investigated in agricultural and natural areas in 17 plot-level paired sites and in a regional survey encompassing more than 100 pasture soils In the paired sites, elemental soil concentrations and stocks were determined in native vegetation (forests and savannas), pastures and crop-livestock systems (CPSs). Nutrient stocks were calculated for the soil depth intervals 0-10, 0-30, and 0-60 cm for the paired sites and 0-10, and 0-30 cm for the pasture regional survey by sum stocks obtained in each sampling intervals (0-5, 5-10, 10-20, 20-30, 30-40, 40-60 cm). Overall, there were significant differences in soil element concentrations and ratios between different land...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Nutrientes no solo; Estoque de nitrogênio; Estoque de carbono; Estoque de fósforo; Concentração de nitrogênio; Concentração de carbono; Concentração de fósforo; Estequiometria; Agricultura; Solo; Agriculture; Nitrogen content; Carbon sinks; Soil; Soil nutrient balance; Stoichiometry.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1038618
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Changes in soil carbon stocks in Brazil due to land use: paired site comparisons and a regional pasture soil survey. Repositório Alice
ASSAD, E. D.; PINTO, H. S.; MARTINS, S. C.; GROPPO, J. D.; SALGADO, P. R.; EVANGELISTA, B.; VASCONCELLOS, E.; SANO, E. E.; PAVÃO, E.; LUNA, R.; CAMARGO, P. B.; MARTINELLI, L. A..
Abstract. In this paper we calculated soil carbon stocks in Brazil using 17 paired sites where soil stocks were determined in native vegetation, pastures and crop-livestock systems (CPS), and in other regional samplings encompassing more than 100 pasture soils, from 6.58° S to 31.53° S, involving three major Brazilian biomes: Cerrado, Atlantic Forest, and the Pampa. The average native vegetation soil carbon stocks at 10, 30 and 60 cm soil depth were equal to approximately 29, 64, and 92 Mg ha-1, respectively. In the paired sites, carbon losses of 7.5 Mg ha-1 and 11.6 Mg ha-1 in CPS systems were observed at 10 cm and 30 cm soil depths, respectively. In pasture soils, carbon losses were similar and equal to 7.5 Mg ha-1 and 11.0 Mg ha-1 at 10 cm and 30 cm...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Solo de pastagem; Uso da terra; Estoque de carbono no solo; Carbon stocks; Land use; Soils.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/968591
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Climate seasonality limits leaf carbon assimilation and wood productivity in tropical forests. Repositório Alice
WAGNER, F. H.; HÉRAULT, B.; BONAL, D.; STAHL, C.; ANDERSON, L. O.; BAKER, T. R.; BECKER, G. S.; BEECKMAN, H.; SOUZA, D. B.; BOTOSSO, P. C.; BOWMAN, D. M. J. S.; BRÄUNING, A.; BREDE, B.; BROWN, F. I.; CAMARERO, J. J.; CAMARGO, P. B.; CARDOSO, F. C. G.; CARVALHO, F. A.; CASTRO, W.; CHAGAS, R. K.; CHAVE, J.; CHIDUMAYO, E.N.; CLARK, D. A.; COSTA, F. R. C.; COURALET, C.; MAURICIO, P. H. da S.; DALITZ, H.; CASTRO, V. R. de; MILANI, J. E. de F.; OLIVEIRA, E. C. de; ARRUDA, L. de S.; DEVINEAU, JEAN-LOUIS; DREW, D. M.; DÜNISCH, O.; DURIGAN, G.; ELIFURAHA, E.; FEDELE, F.; FEDELE, L. F.; FIGUEIREDO FILHO, A.; FINGER, C. A. G.; FRANCO, A. C.; FREITAS JÚNIOR, J. L.; GALVÃO, F.; GEBREKIRSTOS, A.; GLINIARS, R.; GRAÇA, P. M. L. de A.; GRIFFITHS, A. D.; GROGAN, J.; GUAN, K.; HOMEIER, J.; KANIESKI, M. R.; KHO, L. K.; KOENIG, J.; KREPKOWSKI, J.; LEMOS-FILHO, J. P.; LIEBERMAN, D.; LIEBERMAN, M. E.; LISI, C. S.; SANTOS, T. L.; LÓPEZ AYALA, J. L.; MAEDA, E. E.; MALHI, Y.; MARIA, V. R.B.; MARQUES, M. C. M.; MARQUES, R.; CHAMBA, H. M.; MBWAMBO, L.; MELGAÇO, K. L. L.; MENDIVELSO, H. A.; MURPHY, B. P.; O?BRIEN, J. J.; OBERBAUER, S. F.; OKADA, N.; PÉLISSIER, R.; PRIOR, L. D.; ROIG, F. A.; ROSS, M.; ROSSATTO, D. R.; ROSSI, V.; ROWLAND, L.; RUTISHAUSER, E.; SANTANA, H.; SCHULZE, M.; SELHORST, D.; SILVA, W. R.; SILVEIRA, M.; SPANNL, S.; SWAINE, M. D.; TOLEDO, J. J.; TOLEDO, M. M.; TOLEDO, M.; TOMA. T.; TOMAZELLO FILHO, M.; VALDEZ HERNÁNDEZ, J. I.; VERBESSELT, J.; VIEIRA, S. A.; VINCENT, G.; CASTILHO, C. V. de; VOLLAND, F.; WORBES, M.; ZANON, M. L. B.; ARAGÃO, L. E. O. C..
The seasonal climate drivers of the carbon cy- cle in tropical forests remain poorly known, although these forests account for more carbon assimilation and storage than any other terrestrial ecosystem. Based on a unique combina- tion of seasonal pan-tropical data sets from 89 experimental sites (68 include aboveground wood productivity measure- ments and 35 litter productivity measurements), their asso- ciated canopy photosynthetic capacity (enhanced vegetation index, EVI) and climate, we ask how carbon assimilation and aboveground allocation are related to climate seasonal- ity in tropical forests and how they interact in the seasonal carbon cycle. We found that canopy photosynthetic capacity seasonality responds positively to precipitation when rain-...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Mudança climática; Floresta tropical; Madeira; Carbono; Tropical forests; Wood; Climate change; Carbon sinks.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1037530
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Connecting forest canopy structure with size distributions and tree demography in the Amazon. Repositório Alice
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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Developing cost-effective field assessments of carbon stocks in human-modified tropical forests. Repositório Alice
BERENGUER, E.; GARDNER, T. A.; FERREIRA, J.; ARAGÃO, L. E. O. C.; CAMARGO, P. B.; CERRI, C. E.; DURIGAN, M.; OLIVEIRA JUNIOR, R. C.; VIEIRA, I. C. G.; BARLOW, J..
Across the tropics, there is a growing financial investment in activities that aim to reduce emissions from deforestation and forest degradation, such as REDD+. However, most tropical countries lack on-the-ground capacity to conduct reliable and replicable assessments of forest carbon stocks, undermining their ability to secure long-term carbon finance for forest conservation programs. Clear guidance on how to reduce the monetary and time costs of field assessments of forest carbon can help tropical countries to overcome this capacity gap. Here we provide such guidance for cost-effective one-off field assessments of forest carbon stocks. We sampled a total of eight components from four different carbon pools (i.e. aboveground, dead wood, litter and soil)...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Floresta tropical; Estoque de carbono.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1022899
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Does Amazon forest leaf phenology mediate transpiration seasonality and hence, ecoclimate teleconnections? Repositório Alice
SALESKA, S. R.; ALBERT, L. P.; FU, R.; WU, J.; PROHASKA, N.; SMITH, M. N.; IVANOV, V.; CAMARGO, P. B.; OLIVEIRA JUNIOR, R. C. de; RESTREPO-COUPE, N.; WEHR, R.; HUXMAN, T. E..
bitstream/item/164593/1/SALESKA-2017-ESA.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Floresta tropical; Amazônia; Transpiração.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1076592
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Nitrogen in the Tapajos National forest: What's happening? Repositório Alice
OLIVEIRA, R. C.; KELLER, M. M.; CRILL, P. M.; CAMARGO, P. B.; BELDINI, T. P..
Nitrogen (N) is of fundamental importance to forest nutrient cycling. In many places its excess brings serious consequences to the environment, especially to the vegetation and water. At Tapajos National Forest ? (TNF), located along the northern end of the Tapajos River, we have been measuring nutrient deposition since 2003, when rice and soybean were being cultivated using intensive, fertilizer-based methods. Recently, corn has begun to be planted in place of rice and soy due to more favorable market conditions. Weekly collections of rainfall (4) and throughfall (25) samples inside the forest have shown that high inputs of N are entering the forest through wet-deposition, and that N input amount is correlated with site preparation and crop planting, and...
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Floresta; Ciclagem de nutriente; Nitrogênio; Elemento químico; Tapajós; Amazônia; Pará; Brasil.
Ano: 2008 URL: http://www.alice.cnptia.embrapa.br/handle/doc/410180
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Tree species effects on soil properties and greenhouse gas fluxes in East-central Amazonia: comparison between Monoculture and Diverse Forest. Repositório Alice
VAN HAREN, J.; OLIVEIRA JUNIOR, R. C. de; BELDINI, P. T.; CAMARGO, P. B.; KELLER, M.; SALESKA, S..
Tropical plantations are considered a viable option to sequester carbon on abandoned agricultural lands, but implications of tree species selection for overall greenhouse gas budgets on plantations have been little studied. During three wet seasons, we investigated the influence of nine tree species on soil pH, temperature (ST), bulk density (BD), moisture content water filled pore space (WFPS), and greenhouse gas fluxes in diverse forest sites and monoculture plantation plots. All sites were on clay-rich soils of the Barreiras formation, in east-central Amazônia, Brazil. We found that ST and BD were 0.6°C and 0.2 g/cm3 higher in the plantation relative to the forest, and soil CH4, CO,2 and N2O fluxes were, respectively, 38, 12, 62, percent lower in the...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Carbon dioxide; Methane; Nitrous oxide; Plantation; Tree growth; Tropical.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/976693
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Tropical forest degradation and carbon stocks: Insights from a large scale field assessment. Repositório Alice
BERENGUER, E.; BARLOW, J.; FERREIRA, J.; GARDNER, T. A.; ARAGÃO, L.; CAMARGO, P. B.; CERRI, C. E.; DURIGAN, M.; OLIVEIRA, R. C.; VIEIRA, E. C. G..
2013
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Floresta tropical; Carbono; Degradação.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1066542
Registros recuperados: 11
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