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Productivity and carbon fluxes of tropical savannas
Aim (1) To estimate the local and global magnitude of carbon fluxes between savanna and the atmosphere, and to suggest the significance of savannas in the global carbon cycle. (2) To suggest theExpand
Savanna Vegetation-Fire-Climate Relationships Differ Among Continents
Using data from 2154 sites in savannas across Africa, Australia, and South America, it is found that increasing moisture availability drives increases in fire and tree basal area, whereas fire reduces tree basal Area. Expand
Carbon stocks and fluxes in a temporal scaling from a savanna to a semi-deciduous forest
Abstract The strength of carbon sink and stock was assessed in a protected savanna of the Orinoco Llanos by the harvesting plant phytomass and using allometric relationships between the dry mass andExpand
Management effects on carbon stocks and fluxes across the Orinoco savannas
Abstract Across the physiognomic types of the Orinoco llanos, periodic inventories and changes in land-use between 1982–1992 are estimated. Results indicate that the area under pastures and forestExpand
Comparative energy exchange from cowpeas (Vigna unguiculata (L.) Walp cvs. TC-9-6 and M-28-6-6) with differences in canopy architectures and growth durations at the Orinoco llanos
The results indicates that at maximum crop growth stage, leaf area index was similar in the two cultivars, and that different architectures of the canopy had a minor effect on the flux densities of net radiation as well as the partitioning of available energy into sensible and latent heat. Expand
The nature of savanna heterogeneity in the Orinoco Basin
Detrended Canonical Correspondence Analysis (DCCA) was used to describe the relationship between savanna environments and vegetation community composition in the Orinoco Basin. TWINSPAN derived threeExpand
Seasonal patterns of carbon dioxide, water vapour and energy fluxes in pineapple
Abstract For five consecutive seasons (i.e., 840 days), fluxes of latent ( λE ) and sensible heat ( H ) and carbon dioxide (i.e., net ecosystem flux, NEF) were measured by eddy covariance over aExpand
Neotropical savanna converted to food cropping and cattle feeding systems: soil carbon and nitrogen changes over 30 years
The described sustainable use of the analyzed systems provided clues for conserving soil and maintaining system productivity in the Orinoco llanos and comparable lowlands under similar climatic and edaphic conditions. Expand
Land-use changes alter CO2 flux patterns of a tall-grass Andropogon field and a savanna-woodland continuum in the Orinoco lowlands.
Comparisons of carbon source/sink dynamics across a wide range of savannas indicate that savanna carbon budgets can change in sign and magnitude. Expand