Landscape supplementation in adjacent savannas and its implications for the design of corridors for forest birds in the central Cerrado, Brazil

摘要: We examined landscape supplementation (sensu [Oikos 65 (1992) 169]) by forest birds along forest/savanna boundaries in central Brazil to: (1) verify the role of savanna vegetation providing resources to bird communities; (2) suggest minimum amounts savannas be conserved within corridors, provide adequate foraging habitat for outside reserves. Transect counts parallel (n=64) and perpendicular forests were conducted eight (cerrado sensu stricto) between February 2000 January 2001. Patterns species richness abundance relation distances from using Generalised Linear Mixed Models. Omnivores most abundant savannas, followed insectivores frugivores. Landscape was proportional density vegetation. Also, it higher breeding season than non-breeding period. These two patterns that surrounding play a major additional areas species. environmental policy currently protecting 20 m gallery each side rivers modified include at least 60 these through Brazil. The study suggests appropriate conservation efforts should also encompass matrix which home ranges target are expanded, not only their habitat.