A Risky Forest Policy in the Amazon?

21 de março de 2003

mar 21, 2003

Frank D. Merry, Gregory S. Amacher, Eirivelthon Lima, Daniel Nepstad

In their Policy Forum “National forests in the Amazon” (30 Aug., p. 1478), A. Veríssimo et al. seem assured that a new system of national forests will solve the problems of uncontrolled forest exploitation in the Brazilian Amazon. Unfortunately, we are far less optimistic.

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Fire-induced forest transition to derived savannas: Cascading effects on ant communities

Fire-induced forest transition to derived savannas: Cascading effects on ant communities

Changes in land-use and climate increase the flammability of forests across southeast Amazonia, potentially driving abrupt fire-mediated transitions to derived savannas – grass-dominated degraded forests with scattered trees. However, the extent to which the forest fauna undergoes a parallel process remains poorly understood.

Modeling the effects of throughfall reduction on soil water content in a Brazilian Oxisol under a moist tropical forest

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Access to water reserves in deep soil during drought periods determines whether ornot the tropical moist forests of Amazonia will be buffered from the deleterious effectsof water deficits. Changing climatic conditions are predicted to increase periods of droughtin...