Demonstrativos financeiros – 2022
Demonstrações financeiras de 2022 e relatório dos auditores independentes.
Land-use in Amazonia and the Cerrado of Brazil
The total area and annual rate of native vegetation clearing is greatest in the Cerrado region followed by the Brazilian states of Pará, Mato Grosso, Maranhào and Rondônia. Amazonian forest clearing proceeds most quickly where abundant natural resources...
Upland agricultural and forestry development in the Amazon: sustainability, criticality and resilience
This paper provides an overview of agricultural and forestry development in the Amazon basin, and presents and discusses the main land use systems in evidence today in that region. These are logging, shifting-cultivation and ranching. The issue of sustainability is...
A Comparative Study of Tree Establishment in Abandoned Pasture and Mature Forest of Eastern Amazonia
In Amazonia, millions of hectares of forest have been converted to cattle pasture then abandoned. On sites with histories of heavy use, forest recovery is slow. We compared the process of tree establishment in an abandoned pasture with a history of heavy use and in...
Attracting parasitic flies (Diptera: Phoridae) to injured workers of the giant ant Dinoponera Gigantea (Hymenoptera: Formicidae)
Flies of the genus Apocephalus are common parasites of worker ants. Although the mechanisms used by parasitic flies to find their host are not well understood, olfactory cues have been suggested as the mechanism for host location, especially when the host ant is...
Análise Multitemporal do Uso do Solo e Mudança da Cobertura Vegetal em Antiga Área Agrícola da Amazônia Oriental
Landsat TM images from 1994 and 1991 were analyzed for Bragantina Region, the oldest post-Columbian agricultural landscape in eastern Amazônia. The objective of this work was the change detection of land use and vegetation cover in three counties of this region....
Forest Recovery Following Pasture Abandonment in Amazonia: Canopy Seasonality, Fire Resistance and Ants
Tropical forests are important regulators of the flux and storage of carbon, water, and energy in the Biosphere, and they are the habitat of more than three-fourths of the world’s plant and animal species. These ecosystems are also undergoing rapid...