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| Sendall,Kerrie M.; Vourlitis,George L.; Lobo,Francisco A.. |
| Leaf gas exchange, water potential, and specific leaf area of two tropical semi-deciduous tree species, Brosimum lactescens S. Moore and Tovomita schomburgkii Planch & Triana, were quantified to establish how these properties were affected by seasonal variations in rainfall and leaf canopy position. The study was conducted at a site near Sinop Mato Grosso, Brazil, which is located within the ecotone of savanna and tropical rain forest. Both species exhibited significant declines in leaf water potential (ΨL), specific leaf area, area- and mass-based light saturated photosynthesis and dark respiration, and maximum stomatal conductance during the dry-season, suggesting that leaf structural properties and gas exchange are significantly altered by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazil; Brosimum lactescens; Climate change; Ecotone; Photosynthetic response; Tovomita schomburgkii; Tropical transitional forest. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202009000100008 |
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| Miranda,Eduardo J.; Priante Filho,Nicolau; Priante,Pedro C.; Campelo Jr.,José H.; Suli,George S.; Fritzen,Clóvis L.; Nogueira,José de S.; Vourlitis,George L.. |
| Measurements of CO2 and water vapor flux using eddy covariance are being made from a 40 m tower located in a transitional tropical forest near Sinop Mato Grosso. As complementary information to this study, the photosynthetic light response curves of three species located near the tower were measured at different heights in the forest canopy and light conditions with the objective of understanding seasonal and spatial (height in the forest canopy and gap or shade located plants) trends in the photosynthetic light response. The measurements were made in a canopy emergent tree (30 m tall) identified as Brosimum lactescens, and in two relatively short plants (0.6 to 1.6 m height) identified as Quiina pteridophylla and Diniszia excelsa located in different... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eddy covariance; Tropical forest; Photosynthetic light. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662004000100024 |
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