Un symposium organisé par BSEF dans le cadre de la réunion annuelle ATBC 2012

La session est organisée dans le cadre de la 49^ème réunion annuelle ATBC qui se déroulera à Bonito (Brésil) du 19 au 22 juin 2012.

Synopsis

Over the past 50 years, deforestation of tropical forests has increased at such an alarming rate that the long term sustainability of these valuable resources is in question.  The loss of one of the richest and most ecologically important ecosystems in the world has become a major international concern. Uncontrolled harvesting, including over harvesting and poor practices, has now been recognized as an important cause of forest degradation and deforestation. Sustainable forest management is, however, recognized as a major tool to conserve continuous and large area of forests. Sustainability is indeed central to conservation efforts in “working” landscapes where natural resource management, biodiversity conservation, and maintenance of ecosystem goods and services are shared priorities. In tropical forests from which scattered trees of marketable species are harvested selectively for their timber, attainment of the goal of sustainable management should include maintenance of the full range of ecosystem goods and services and biodiversity, as well as sustaining timber yields. It is now recognized that most of tropical forests harvested for timber will certainly not totally recover within the relatively short rotation cycle authorized in most of tropical countries forest policy. While some forest scientists believe that production forest can provide goods and services to both local actors and the society, others believe that only protected areas can ensure the full preservation of one of the richest ecosystem on earth. The truth might lay in between, depending on forests structural and environmental characteristics and management intensity, with some forests being probably more resilient to disturbance than others. In this symposium we bring together several study cases to assess how different are logged areas from primary forests in terms of biodiversity and provision of ecosystem services to assess if we are managing to maintain conservation values in selectively logged areas. This symposium aims to debate the following question:  How are managed tropical forests different from primary ones?

Confirmed Speakers

1. Peña-Claros, M. et al.  Impact of logging on forest dynamics and diversity in Bolivia

2. Sist, P.,  Mazzei, L., Blanc, L., Ruschel, A., Kanashiro, M. Long term Impact of logging on carbon storage and tree diversity in the Amazon Basin

3. Sylvie Gourlet-Fleury et al.  Forest types and forest management recommendation in Central Africa

4. Carreno-Rocabado, G. and Poorter, L.  Changes in functional diversity along a gradient of logging intensity

5. Vinson, C.C, Kanashiro,M., Azevedo, V.C.R, Maués, M.M.,  Harris, S.A, Boshier, D.H. The effect of selective logging on the genetic diversity of two Amazonian timber species with contrasting  ecological and  reproductive characteristics