Conservation Evidence strives to be as useful to conservationists as possible. Please take our survey to help the team improve our resource.

Providing evidence to improve practice

Individual study: Private forest reserves can aid in preserving the community of medium and large-sized vertebrates in the Amazon arc of deforestation

Published source details

Negrões N., Revilla E., Fonseca C., Soares A.M.V.M., Jácomo A.T.A. & Silveira L. (2011) Private forest reserves can aid in preserving the community of medium and large-sized vertebrates in the Amazon arc of deforestation. Biodiversity and Conservation, 20, 505-518


This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Legally protect habitat for mammals Terrestrial Mammal Conservation

A site comparison study in 2005–2007 in two sites mostly composed of secondary forest in Pará, Brazil (Negrões et al. 2011) found that 13 of 16 species were less abundant in a protected area than in a nearby unprotected area. Results were not tested for statistical significance. Populations of 13 of 16 species were lower in the protected area (0–4.5 photos/100 camera-trap nights) than in a nearby unprotected area (0.1–5.0 photos/100 camera-trap nights). Three of the 16 species were more abundant in the protected area (0.2–4.5 photos/100 camera-trap nights) than in the unprotected area (0.2–4.1 photos/100 camera-trap nights). Vegetation in the protected area was largely secondary rainforest and, in the unprotected area, 65% was secondary forest and 35% was pasture. Five camera-trap surveys were carried out between July 2005 and November 2007 at 10–22 locations in a protected area and 10–22 locations in a nearby unprotected area. Cameras were placed 50–70 cm above ground level at each location. Each camera took one photograph every 5 minutes. Relative abundance of species was estimated by dividing the number of photos of a species by the number of trap-nights.

(Summarised by Phil Martin)