Artigos científicos

Artigos científicos
A Comparative Study of Tree Establishment in Abandoned Pasture and Mature Forest of Eastern Amazonia

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...

Artigos científicos
Attracting parasitic flies (Diptera: Phoridae) to injured workers of the giant ant Dinoponera Gigantea (Hymenoptera: Formicidae)

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...

Artigos científicos
Análise Multitemporal do Uso do Solo e Mudança da Cobertura Vegetal em Antiga Área Agrícola da Amazônia Oriental

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....