The Increase in Deforestation in the Amazon in 2013: a point off the curve or out of control?

7 de January de 2014

Jan 7, 2014

With the objective of reflecting on the causes that led to this deforestation and stimulating a reaction by the Brazilian Public Sector, the Amazon Institute for Environmental Research (IPAM), the Socioenvironmental Institute (ISA) and the Institute of People and the Environment of the Amazon (IMAZON) present in this document their reflections on the increase in deforestation that occurred in 2013 and put forth a series of recommendations for moving forward with reductions in rates of forest destruction in the Amazon.

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Fire, fragmentation, and windstorms: A recipe for tropical forest degradation

Fire, fragmentation, and windstorms: A recipe for tropical forest degradation

Widespread degradation of tropical forests is caused by a variety of disturbances that interact in ways that are not well understood. To explore potential synergies between edge effects, fire and windstorm damage as causes of Amazonian forest degradation, we quantified vegetation responses to a 30‐min, high‐intensity windstorm that in 2012, swept through a large‐scale fire experiment that borders an agricultural field. Our pre‐ and postwindstorm measurements include tree mortality rates and modes of death, above‐ground biomass, and airborne LiDAR‐based estimates of tree heights and canopy disturbance (i.e., number and size of gaps). The experimental area in the southeastern Amazonia includes three 50‐ha plots established in 2004 that were unburned (Control), burned annually (B1yr), or burned at 3‐year intervals (B3yr).