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Title: Reduced-impact logging has little effect on temporal activity of frugivorous bats (Chiroptera) in lowland Amazonia

Author: Presley, S.J.; Willig, M.R.; Saldanha, L.N.; Wunderle, Jr. J.M.; Castro-Arellano, I.;

Date: 2009

Source: Biotropica. 41(3): 369-378.

Publication Series: Scientific Journal (JRNL)

Description: Reduced-impact logging (RIL) represents a viable option for sustainable use of Neotropical lowland forests while minimizing negative effects on local biodiversity. Many Neotropical bats of the family Phyllostomidae provide ecosystem services associated with pollination and seed dispersal that promote the regeneration of disturbed areas; therefore, effects of RIL on these species is of particular concern. We determined patterns of temporal activity, degree of temporal overlap of activity, and dispersion in peaks of activity for seven abundant species of frugivorous bat in Tapaj´os National Forest, Par´a, Brazil. In addition, we evaluated the effects of RIL at a harvest level of 18.7 m3/ha and habitat physiognomy on temporal patterns of activity for these species. Bats were surveyed for four nights at each of 96 sites for a total sampling effort of 64,512 net-m-h. Sites were distributed among four experimental blocks, two blocks of unlogged forest and two blocks of forest subjected to RIL. Half of the sites in each management type were in forest gaps and half were in closed-canopy forest. In general, species exhibited similar patterns of activity, and greater than expected temporal overlap in activity among species. RIL and forest physiognomy had little effect on activity patterns of species. RIL in Amazonia removes fewer trees than do naturally occurring treefalls and such changes in habitat structure do not alter activity patterns of frugivorous bats. Evidence suggests that RIL does not have an appreciable adverse effect on frugivorous bats in Amazonia.

Keywords: behavior, conservation, deforestation, habitat use, Phyllostomidae, sustainable use, forest management, Tapajos, Brazil, temporal overlap

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Presley, S.J.; Willig, M.R.; Saldanha, L.N.; Wunderle, Jr., J.M.; Castro-Arellano, I. 2009. Reduced-impact logging has little effect on temporal activity of frugivorous bats (Chiroptera) in lowland Amazonia. Biotropica. 41(3): 369-378.

 


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