2014
DOI: 10.1590/s1984-46702014000200006
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Habitat use and seasonal activity of insectivorous bats (Mammalia: Chiroptera) in the grasslands of southern Brazil

Abstract: ABSTRACT. In temperate zones, insectivorous bats use some types of habitat more frequently than others, and are more active in the warmest periods of the year. We assessed the spatial and seasonal activity patterns of bats in open areas of the southernmost region of Brazil. We tested the hypothesis that bat activity differs among habitat types, among seasons, and is influenced by weather variables. We monitored four 1,500-m transects monthly, from April 2009 to March 2010. Transects corresponded to the five ha… Show more

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Cited by 36 publications
(24 citation statements)
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“…A bat pass is a single sequence of two or more recorded echolocation calls as defined by Thomas (1988). We used Pettersson D240X ultrasound detectors (Pettersson Elektronik ABTM, Uppsala, Sweden (http://www.batsound.com/) in heterodyne mode (Estrada et al 2004, Barros et al 2014 to survey bat activity. The detector was always tuned to 33 kHz, and bat passes were counted along 10-minute transects at the start of each hour.…”
Section: Bat Activity Surveysmentioning
confidence: 99%
“…A bat pass is a single sequence of two or more recorded echolocation calls as defined by Thomas (1988). We used Pettersson D240X ultrasound detectors (Pettersson Elektronik ABTM, Uppsala, Sweden (http://www.batsound.com/) in heterodyne mode (Estrada et al 2004, Barros et al 2014 to survey bat activity. The detector was always tuned to 33 kHz, and bat passes were counted along 10-minute transects at the start of each hour.…”
Section: Bat Activity Surveysmentioning
confidence: 99%
“…The elaboration of these maps should take into account spatial and temporal patterns of activity, species composition, roost location and identification of bat foraging areas (Table 2; columns 5, 6 and 7). To obtain these data, sampling schemes should include at least one year encompassing all seasons, if the required study by the environmental agency is an EIA, or at least six months, encompassing two consecutive seasons necessarily including the summer (spring and summer, or summer and fall), if the required study is a RAS ( Table 2; columns 8 and 9) in shorter studies like a RAS, fieldwork during wintertime should be avoided because bat activity is significantly reduced (Barros et al 2014). In both cases, sampling should have a monthly frequency and at least one-week duration.…”
Section: Preliminary Licensementioning
confidence: 99%
“…In terrestrial environments acoustic methods have been used most extensively on bats (e.g. Barros, Pessoa & Rui ; Kennedy, Sillett & Szewczak ; Whitby et al . ), particularly to study community diversity, but there has been recent interest in detecting primates (e.g.…”
Section: Introductionmentioning
confidence: 99%
“…Acoustic monitoring approaches are particularly suited for the study of animals or behaviours that are cryptic, for example, nocturnal species (e.g. De Solla et al 2006;Djossa, Zachee & Sinsin 2012;Barros, Pessoa & Rui 2014;Digby et al 2014;Zwart et al 2014), marine mammals (e.g. Marques et al 2013;Rogers et al 2013), and forest elephants (Thompson, Schwager & Payne 2009a;Wrege et al 2010Wrege et al , 2012.…”
Section: Introductionmentioning
confidence: 99%
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