Geographical variation in the high-duty cycle echolocation of the cryptic common mustached bat<i>Pteronotus</i>cf.<i>rubiginosus</i>(Mormoopidae)

López‐Baucells, Adrià; Torrent, Laura; Rocha, Ricardo; Pavan, Ana Carolina; Bobrowiec, Paulo Estefano Dineli; Meyer, Christoph F. J.

doi:10.1080/09524622.2017.1357145

Cited by 26 publications

(23 citation statements)

References 47 publications

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“…parnellii, Lonchophylla thomasi and Mimon crenulatum which, based on recent taxonomic work, are referred to as Pteronotus cf. rubiginosus (sensu [41]), Hsunycteris thomasi and Gardnerycteris crenulatum, respectively.…”

Section: Data Collectionmentioning

confidence: 99%

Effects of Forest Fragmentation on the Vertical Stratification of Neotropical Bats

et al. 2020

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Vertical stratification is a key component of the biological complexity of rainforests. Understanding community- and species-level responses to disturbance across forest strata is paramount for evidence-based conservation and management. However, even for bats, known to extensively explore multiple layers of the complex three-dimensional forest space, studies are biased towards understory-based surveys and only few assessments of vertical stratification were done in fragmented landscapes. Using both ground and canopy mist-nets, we investigated how the vertical structure of bat assemblages is influenced by forest fragmentation in the experimentally fragmented landscape of the Biological Dynamics of Forest Fragments Project, Central Amazon, Brazil. Over a three year-period, we captured 3077 individuals of 46 species in continuous forest (CF) and in 1, 10 and 100 ha forest fragments. In both CF and forest fragments, the upper forest strata sustained more diverse bat assemblages than the equivalent understory layer, and the midstory layers had significantly higher bat abundance in fragments than in CF. Artibeus lituratus and Rhinophylla pumilio exhibited significant shifts in their vertical stratification patterns between CF and fragments (e.g., R. pumilio was more associated with the upper strata in fragments than in CF). Altogether, our study suggests that fragmentation modulates the vertical stratification of bat assemblages.

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Section: Data Collectionmentioning

confidence: 99%

Effects of Forest Fragmentation on the Vertical Stratification of Neotropical Bats

et al. 2020

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“…parnellii includes two sympatric sister species in our study area (López‐Baucells et al. ). Our data provide the first comparative quantification of species‐specific activity and occurrence of these species ( Pteronotus rubiginosus and P. sp1) and suggest that both are associated with highly cluttered habitats.…”

Section: Discussionmentioning

confidence: 99%

The importance of lakes for bat conservation in Amazonian rainforests: an assessment using autonomous recorders

Torrent

López‐Baucells

Rocha

et al. 2018

Remote Sens Ecol Conserv

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Recent studies predict a future decrease in precipitation across the tropics, particularly the Amazon, likely causing significant droughts that have negative consequences for Amazonian freshwater biomes, especially lakes. Furthermore, immediate consequences of global warming for terrestrial fauna associated with tropical lakes are poorly understood as the vast majority of studies come from temperate regions. Here, we assess the seasonal importance of lakes for the conservation of aerial insectivorous bats in the Central Amazon using passive bat recorders. We compared richness, general bat activity and foraging activity between lakes and adjacent forest. Of a total of 21 species/sonotypes recorded in both habitats, all were detected over lakes, and 18 were significantly more active over lakes than in forest. Only two species had significantly higher activity levels in the forest than at the lakes. Species richness and general bat activity over the lakes were higher in the dry than in the rainy season. Foraging activity was also greater over the lakes than within the forest in both seasons. Moreover, both variables were positively correlated with lake size, although the effect on activity was species-specific. Climate change-driven shrinking of lakes may have detrimental consequences for aerial insectivorous bats, especially for the most water-dependent species. Compared to permanent water bodies of other regions, the value of tropical lakes for functionally important taxa, such as bats, has been understudied. Higher bat activity levels over lakes than in forest in both seasons and comprising the whole ensemble of aerial insectivorous bats of the study region, indicate that lakes embedded in Amazonian terra firme forests deserve special attention for future bat conservation.

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“…Discriminant function analysis (DFA) is a statistical tool used to evaluate multidimensional data, such as bat call characteristics (Parsons andSzewczak 2009, Tabachnick andFidell 2013). The use of DFA to identify unknown bats via their echolocation calls has become a common tool in bat research (e.g., Gannon et al 2004, Slough et al 2014, Wordley et al 2014, Rydell et al 2017, Lopez-Baucells et al 2018. It is relatively straight-forward and does not require complicated software or algorithms.…”

Section: Methodsmentioning

confidence: 99%

“…Echolocation variation among populations in different geographic regions has also been observed (Parsons 1997, Jiang et al 2015, Lin et al 2015, Lopez-Baucells et al 2018. Call characteristics vary with local conditions such as temperature, humidity, and vegetation type (Lin et al 2015, Chaverri and Quirós 2017, Jacobs et al 2017.…”

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confidence: 96%

Acoustic Surveys for Bats are Improved by Taking Habitat Type into Account

Findlay

Barclay

2019

Wildl. Soc. Bull.

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Passive monitoring of bat species via acoustics is a growing field and as a result there are various software programs available that allow for species identification. However, accuracy of these programs is variable and creating a local call library is essential when trying to identify acoustically similar species. In Dinosaur Provincial Park, Alberta, Canada, 3 Myotis species are difficult to distinguish acoustically. We created an echolocation call library from known Myotis evotis, M. lucifugus, and M. ciliolabrum flying in open spaces and near clutter to test whether or not recording in the bats' local habitat type improved call library quality and identification accuracy. Bat calls recorded within open spaces (coulees) differed from those recorded near cluttered spaces (tree edges) for M. ciliolabrum and M. lucifugus. Accuracy of species identification also increased when we used models based on bat calls recorded in cluttered habitats. Using a simple model with recordings from different habitat types within a study site, we were able to improve identification accuracy and model performance. © 2019 The Wildlife Society.

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Geographical variation in the high-duty cycle echolocation of the cryptic common mustached batPteronotuscf.rubiginosus(Mormoopidae)

Cited by 26 publications

References 47 publications

Effects of Forest Fragmentation on the Vertical Stratification of Neotropical Bats

Effects of Forest Fragmentation on the Vertical Stratification of Neotropical Bats

The importance of lakes for bat conservation in Amazonian rainforests: an assessment using autonomous recorders

Acoustic Surveys for Bats are Improved by Taking Habitat Type into Account

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