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Determinants of Tropical Savannas
1996Tropical savannas, defined as ecosystems formed by a continuous layer of graminoids (grasses and sedges) with a discontinuous layer of trees and/or shrubs, are the most common vegetation type (physiognomy) in the tropics. Tropical savannas are found over a wide range of conditions: rainfall from approximately 200 mm to 1500 mm a year, temperature from ...
Otto T. Solbrig +2 more
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Allocation of phosphorus in a tropical savanna
Chemosphere, 1999The allocation of phosphorus (P) was studied in the different components of a Trachypogon savanna ecosystem, particularly in those related to biological productivity processes. The research was based on the sequential fractionation of soil P and on the determination of P content in different plant components.
null Ismael Hernández-Valencia +1 more
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Seasonal skew of tropical savanna fires
2023Tropical savannas and grasslands are the most frequently burned biome in the world, and fire constitutes an important part of the ecosystem. In this ecosystem it can have both rejuvenating and destructive effects, depending on several factors including fuel conditions, weather conditions, and time of year.
Tom Eames +4 more
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The spectral changes of deforestation in the Brazilian tropical savanna
Environmental Monitoring and Assessment, 2014The Cerrado is a biome in Brazil that is experiencing the most rapid loss in natural vegetation. The objective of this study was to analyze the changes in the spectral response in the red, near infrared (NIR), middle infrared (MIR), and normalized difference vegetation index (NDVI) when native vegetation in the Cerrado is deforested.
Trancoso, Ralph +2 more
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Fire in Australian Tropical Savannas
1982Savannas have been defined in many ways. In this paper Australian tropical savannas are defined as communities in which the grass component is often predominant but in which predominance may vary between grassy and woody components. The grassy-woody status is determined not only by static landscape factors, but also by the dynamic interactions of fire ...
C. J. Lacey, J. Walker, I. R. Noble
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New Phytologist, 2010
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Marina, Hirota +3 more
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Featured paper: See Editorial ...
Marina, Hirota +3 more
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Savanna–forest hysteresis in the tropics
Global Ecology and Biogeography, 2001AbstractA simple dynamic model relating forest area in a region, its contribution to dry season precipitation and the effect on its own establishment was developed. The model equation shows hysteresis between forest and savannas as a function of imported dry season precipitation.
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Productivity and carbon fluxes of tropical savannas
Journal of Biogeography, 2006AbstractAim (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 the extent to which protection of savannas could contribute to a global carbon sequestration initiative.Location Tropical savanna ecosystems in Africa ...
John Grace +4 more
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Global Resilience of Tropical Forest and Savanna to Critical Transitions
Science, 2011Tree distributions across continents indicate three distinct stable states in tree cover―forest, savanna, and treeless.
Hirota +4 more
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Conclusion: Characteristic Features of Tropical Savannas
1982The foregoing chapters illustrate the diverse nature of the tropical savannas of the southern continents. They also highlight both the rudimentary state of our knowledge of these systems and the lack of any unifying concepts relating to their structure and functioning. Two main factors account for this situation.
Brian J. Huntley, Brian H. Walker
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