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Registros recuperados: 14 | |
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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 de periódico |
Palavras-chave: Floresta tropical; Madeira; Carbono; Mudança Climática.; Tropical forests; Wood; Climate change; Carbon sinks. |
Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1037530 |
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POWELL, T. I.; GALBRAITH, D. R.; CHRISTOFFERSEN, B. O.; HARPER, A.; IMBUZEIRO, H. M. A.; ROWLAND, L.; ALMEIDA, S.; BRANDO, P. M.; COSTA, A. C. L. da; COSTA, M. H.; LEVINE, N. M.; MALHI, Y.; SALESKA, S. R.; SOTTA, E.; WILLIAMS, M.; MEIR, P.; MOORCROFT, P. R.. |
Considerable uncertainty surrounds the fate of Amazon rainforests in response to climate change. Here, carbon (C) flux predictions of five terrestrial biosphere models (Community Land Model version 3.5 (CLM3.5), Ecosystem Demography model version 2.1 (ED2), Integrated BIosphere Simulator version 2.6.4 (IBIS), Joint UK Land Environment Simulator version 2.1 (JULES) and Simple Biosphere model version 3 (SiB3)) and a hydrodynamic terrestrial ecosystem model (the Soil?Plant?Atmosphere (SPA) model) were evaluated against measurements from two large-scale Amazon drought experiments. Model predictions agreed with the observed C fluxes in the control plots of both experiments, but poorly replicated the responses to the drought treatments. Most notably, with the... |
Tipo: Artigo de periódico |
Palavras-chave: Tropical rainforest; Ciclo do cabono; Modelo de biosfera terrestre; Terrestrial biosphere model.; Floresta tropical; Carbon cycle.. |
Ano: 2013 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/965567 |
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ROWLAND, L.; MEIR, P.; MENCUCCINI, M.; COSTA A. da; BINKS, O.; OLIVEIRA, R.; MERCADO, L.; VASCONCELOS, S. S.; OLIVEIRA, A.; CHRISTOFFERSEN, B.; FERREIRA, L.; GRACE, J.; SITCH, S.. |
Tipo: Separatas |
Palavras-chave: Floresta Tropical; Resistência; Seca.. |
Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1064719 |
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MEIR, P.; ROWLAND, L.; COSTA, A. da; MENCUCCINI, M.; OLIVEIRA, A.; BINKS, O.; CHRISTOFFERSEN, B.; ELIANE, M.; VASCONCELOS, S.; KRUIJT, B.; FERREIRA, L.. |
Tipo: Separatas |
Palavras-chave: Floresta Tropical; Mortalidade; Seca.. |
Ano: 2014 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1003905 |
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ROWLAND, L.; COSTA, A. C. L. da; OLIVEIRA, A. A. R.; OLIVEIRA, R. S.; BITTENCOURT, P. L.; COSTA, P. B.; GILES, A. L.; SOSA, A. I.; COUGHLIN, I.; GODLEE, J. L.; VASCONCELOS, S. S.; S. JUNIOR, J. A.; FERREIRA, L. V.; MENCUCCINI, M.; MEIR, P.. |
CO2 efflux from stems (CO2_stem) accounts for a substantial fraction of tropical forest gross primary productivity, but the climate sensitivity of this flux remains poorly understood. We present a study of tropical forest CO2_stem from 215 trees across wet and dry seasons, at the world?s longest running tropical forest drought experiment site. We show a 27% increase in wet season CO2_stem in the droughted forest relative to a control forest. This was driven by increasing CO2_stem in trees 10?40 cm diameter. Furthermore, we show that drought increases the proportion of maintenance to growth respiration in trees > 20 cm diameter, including large increases in maintenance respiration in the largest droughted trees, > 40 cm diameter. However, we found no... |
Tipo: Artigo de periódico |
Palavras-chave: Estresse hídrico; Carbono; Floresta; Floresta Tropical. |
Ano: 2018 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1091469 |
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ROWLAND, L.; COSTA, A. da; OLIVEIRA, R.; BINKS, O.; SITCH, S.; VASCONCELOS, S. S.; OLIVEIRA, A.; SALMON, Y.; FERREIRA, L.; MENCUCCINI, M.; MEIR, P.. |
Tipo: Separatas |
Palavras-chave: Floresta Tropical; Mortalidade; Seca.. |
Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1064714 |
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ROWLAND, L.; OLIVEIRA, R. S.; BITTENCOURT, P. R. L.; GILES, A. L.; COUGHLIN, I.; COSTA, P. de B.; DOMINGUES, T.; FERREIRA, L. V.; VASCONCELOS, S. S.; S. JUNIOR, J. A.; OLIVEIRA, A. A. R.; COSTA, A. C. L. da; MEIR, P.; MENCUCCINI, M.. |
Plant traits are increasingly being used to improve prediction of plant function, including plant demography. However, the capability of plant traits to predict demographic rates remains uncertain, particularly in the context of trees experiencing a changing climate. Here we present data combining 17 plant traits associated with plant structure, metabolism and hydraulic status, with measurements of long‐term mean, maximum and relative growth rates for 176 trees from the world?s longest running tropical forest drought experiment. We demonstrate that plant traits can predict mean annual tree growth rates with moderate explanatory power. However, only combinations of traits associated more directly with plant functional processes, rather than more... |
Tipo: Artigo de periódico |
Palavras-chave: Disponibilidade de luz; Crescimento da árvore; Planta; Crescimento; Clima; Seca; Floresta Tropical; Aclimatação; Mudança Climática. |
Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1126957 |
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BINKS, O.; MEIR, P.; ROWLAND, L.; COSTA, A. C. L. da; VASCONCELOS, S. S.; OLIVEIRA, A. A. R. de; FERREIRA, L.; CHRISTOFFERSEN, B.; NARDINI, A.; MENCUCCINI, M.. |
The tropics are predicted to become warmer and drier, and understanding the sensitivity of tree species to drought is important for characterizing the risk to forests of climate change. This study makes use of a long-term drought experiment in the Amazon rainforest to evaluate the role of leaf-level water relations, leaf anatomy and their plasticity in response to drought in six tree genera. The variables (osmotic potential at full turgor, turgor loss point, capacitance, elastic modulus, relative water content and saturated water content) were compared between seasons and between plots (control and through-fall exclusion) enabling a comparison between short- and long-term plasticity in traits. Leaf anatomical traits were correlated with water relation... |
Tipo: Separatas |
Palavras-chave: Plasticidade; Relações hídricas; Seca experimental; Anatomia foliar. |
Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1047926 |
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BINKS, O.; MEIR, P.; ROWLAND, L.; COSTA, A. C. L. da; VASCONCELOS, S. S.; OLIVEIRA, A. A. R. de; FERREIRA, L.; CHRISTOFFERSEN, B.; NARDINI, A.; MENCUCCINI, M.. |
Tipo: Separatas |
Palavras-chave: Floresta Tropical; Seca.. |
Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1064525 |
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MEIR, P.; ROWLAND, L.; COSTA, A. C. L. da; MENCUCCINI, M.; OLIVEIRA, R.; BINKS, O.; VASCONCELOS, S. S.; OLIVEIRA, A. de; SALMON, Y.; FERREIRA, L.; MEIR, P.. |
Tipo: Separatas |
Palavras-chave: Floresta Tropical; Seca.. |
Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1064558 |
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ROWLAND, L.; COSTA, A. C. L. da; OLIVEIRA, R. S.; BITTENCOURT, P. R. L.; GILES, A. L.; COUGHLIN, I.; COSTA, P. de B.; BARTHOLOMEW, D.; DOMINGUES, T. F.; MIATTO, R. C.; FERREIRA, L. V.; VASCONCELOS, S. S.; S. JUNIOR, J. A.; OLIVEIRA, A. A. R.; MENCUCCINI, M.; MEIR, P.. |
Whether tropical trees acclimate to long‐term drought stress remains unclear. This uncertainty is amplified if drought stress is accompanied by changes in other drivers such as the increases in canopy light exposure that might be induced by tree mortality or other disturbances. Photosynthetic capacity, leaf respiration, non‐structural carbohydrate (NSC) storage and stomatal conductance were measured on 162 trees at the world's longest running (15 years) tropical forest drought experiment. We test whether surviving trees have altered strategies for carbon storage and carbon use in the drier and elevated light conditions present following drought‐related tree mortality. Relative to control trees, the surviving trees experiencing... |
Tipo: Artigo de periódico |
Palavras-chave: Seca; Respiração; Carboidrato; Floresta Tropical; Fotossíntese; Drought; Tropical forests; Light; Carbohydrates; Photosynthesis; Stomatal conductance. |
Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1126671 |
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Registros recuperados: 14 | |
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