Nightly, Seasonal, and Yearly Patterns of Bat Activity at Night Roosts in the Central Appalachians

Agosta, Salvatore J.; Morton, David W.; Marsh, Brian D.; Kuhn, Kellie M.

doi:10.1644/05-mamm-a-012r1.1

Cited by 24 publications

(15 citation statements)

References 46 publications

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“…Furthermore, the phyllostomids maintain the body temperature even when the environmental temperatures are low, which would cause a greater energy loss during the flight (Thies et al, 2006), which is proven by the decrease in the captures in the colder months for C. perspicillata and S. lilium. Agosta et al (2005) highlighted the temperature influence on the exit of bats from the shelter that support the results obtained in the present study, considering the decrease in the number of animals in the nets associated to the temperature drop. The values of capture for P. lineatus, higher in the summer, and lower in the spring and winter, may be related to the fruits availability used in its alimentation.…”

Section: Discussionsupporting

confidence: 91%

“…Additionally, the alteration in the microclimate of these areas originated by the anthropogenic activity has caused changes in temperature, luminosity and humidity (Odum and Barrett, 2007), conditions that may influence the bats activities (Thies et al, 2006). Moreover, according to Agosta et al (2005), intrinsic characteristics of the species may result in distinct activity patterns.…”

Section: Introductionmentioning

confidence: 99%

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Time and seasonal patterns of activity of phyllostomid in fragments of a stational semidecidual forest from the Upper Paraná River, Southern Brazil

2010

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Bats may exhibit different patterns of activity, considering aspects concerning niche dynamics as well as the establishment and permanence of the communities in the ecosystems. In this way, the present study analyzed the time and seasonal patterns of activity in different species of frequent phyllostomid bats in remnants of the stational semidecidual forest from the Upper Paraná River, Southern Brazil. Captures were performed between January and December, 2006, using 32 mist nets set above the soil along the nocturnal period during the four seasons of the year. The daily and seasonal patterns of activity of each species was modeled using generalized linear models with Poisson error. The best model was selected using Akaike's Information Criterion (AICc). Artibeus planirostris (Spix, 1823) did not exhibit a conspicuous time pattern, whereas A. lituratus (Olfers, 1818) was more frequent after the sixth hour and A. fimbriatus Gray, 1838 had an activity increase along the night. Platyrrhinus lineatus (E. Geoffroy, 1810) was registered during all sampling hours. Carollia perspicillata (Linnaeus, 1758) and Sturnira lilium (E. Geoffroy, 1810) were the most active during the first four hours. Concerning seasonal pattern, the highest activity of these species was verified during the summer. These data contribute to the information about the ecology of bats in the region, highlighting the high adaptive potential of the species studied in relation to the use of space throughout the night and in to variations in environmental conditions. Keywords: phyllostomid bats, time activity, seasonal activity, stational semidecidual forest. Padrões de atividade horária e sazonal de morcegos filostomídeos em fragmentos de floresta estacional semidecidual do alto rio Paraná, sul do Brasil ResumoOs morcegos podem exibir diferentes padrões de atividade, considerando-se aspectos relacionados à dinâmica de nicho e ao estabelecimento e permanência das comunidades nos ecossistemas. Assim, o presente estudo teve por objetivo investigar o padrão de atividade horária e sazonal em diferentes espécies de morcegos, frequentes em remanescentes de floresta estacional semidecidual do alto rio Paraná, sul do Brasil. As coletas foram realizadas entre janeiro e dezembro de 2006, com o auxílio de 32 redes armadas acima do solo, ao longo de todo o período noturno e nas quatro estações do ano. A análise dos dados contemplou o uso de modelos lineares generalizados Akaike's Information Criterion (AICc) e distribuição de Poisson. Artibeus planirostris (Spix, 1823) não exibiu um padrão horário conspícuo, enquanto A. lituratus (Olfers, 1818) foi mais frequente após a sexta hora e A. fimbriatus Gray, 1838 teve aumento da atividade ao longo da noite. Platyrrhinus lineatus (E. Geoffroy, 1810) foi registrado durante todas as horas de amostragem. Carollia perspicillata (Linnaeus, 1758) e Sturnira lilium (E. Geoffroy, 1810) foram mais ativos nas quatro primeiras horas. Em relação ao padrão sazonal, constatou-se maior atividade dessas espécies durante o verão. ...

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Time and seasonal patterns of activity of phyllostomid in fragments of a stational semidecidual forest from the Upper Paraná River, Southern Brazil

2010

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“…In their study of underground cellars in Poland, Lesiń ski et al (2004) stated that small, well-distributed hibernacula are most likely to be used by local bat communities, as this would increase their chance of survival as opposed to a long migration to a larger hibernacula site. Since hibernacula for eastern pipistrelles are presumed to be within 100 km of summer roosting sites (Vincent and Whitaker, 2007) and comparatively permanent roosts such as caves are able to support stable bat populations and annual use patterns (Agosta et al, 2005), it is apparent that small caves are an important source of hibernacula for the eastern pipistrelle.…”

Section: Discussionmentioning

confidence: 99%

The Role of Small Caves as Bat Hibernacula in Iowa

Dixon¹

2011

JCKS

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Small caves provide habitat for a variety of species, including bats. Past research on cave bats in Iowa has focused on a few large caves. Large caves are uncommon and represent only a portion of the known caves in the state. Since few hibernacula are protected in Iowa and no assessment of small caves has been done, bat census data were compared to cave morphology to determine the significance of small caves as hibernacula. Twelve years of census data (1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009) were reviewed for small caves (# 50.0 m in length) where hibernating bats had been documented. Four morphological features were compared against the data: entrance aspect, entrance size, cave length, and internal surface area. Student's t-test and Spearman rank correlation were used to test for relationships between the presence and abundance of each species and each of the four morphological features. The eastern pipistrelle occurred in 68% of the caves, and the little brown bat in 24%. Student's t-test showed a significant correlation with cave length for eastern pipistrelles. Spearman rank correlation showed a significant negative correlation with entrance aspect and significant positive correlations for cave length and internal surface area for eastern pipistrelles. The results are different from previous studies on larger Iowa caves, which showed big brown bats and little brown bats as the most abundant species. Eastern pipistrelles preferred larger caves with vertical entrances. However, large is a subjective term, and the results indicate that small caves are an important source of hibernacula for the eastern pipistrelle.

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“…3). Agosta et al (2005), Milne et al (2005), Kuenzi and Morrison (2003), and Ciechanowski et al (2007) report a positive correlation between bat activity and ambient temperature from temporal surveys.…”

Section: Nightly Patternsmentioning

confidence: 93%

“…3). A positive correlation between bat activity and air temperature is commonly reported (Hayes 1997;Broders et al 2006) but a decline in activity above a maximum temperature is less commonly reported (e.g., Hayes 1997;Agosta et al 2005;Ciechanowski et al 2007). A reduction in activity above some maximum temperature could be a behavioral response to avoid overheating (Reeder and Cowles 1951) or reduced energy demands for thermoregulation.…”

Section: Nightly Patternsmentioning

confidence: 99%

Habitat-associated and temporal patterns of bat activity in a diverse forest landscape of southern New England, USA

Brooks

2008

Biodivers Conserv

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The development and use of acoustic recording technology, surveys have revealed the composition, relative levels of activity, and preliminary habitat use of bat communities of various forest locations. However, detailed examinations of acoustic surveys results to investigate temporal patterns of bat activity are rare. Initial active acoustic surveys of bat activity on the Quabbin Reservoir watershed in central Massachusetts recorded high numbers of call sequences by Wve bat species. The results showed the importance of aquatic and open habitats for bats in this diverse forest landscape. Because the preliminary surveys were restricted in extent (habitats), number (replicates), and duration (active surveys only, limited number of repeated surveys), the authors strongly recommended more comprehensive and extensive surveys of bat activity on the area. This paper reports the results of active (manual) and passive (automated) acoustic bat activity surveys in three replicates of ten habitats, conducted three to four times per year over the course of the study between 2004 and 2006. Over the full study, 2,800 actively-recorded 37,632 passivelyrecorded call sequences were examined and identiWed to species when possible. General patterns in activity did not diVer by habitat between the two survey methods. Call sequences were recorded more often in open, especially aquatic habitats than in cluttered habitats. The use of passive surveys allowed for the assessment of temporal patterns of activity and an analysis of the relationship between ambient temperature and activity.

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Nightly, Seasonal, and Yearly Patterns of Bat Activity at Night Roosts in the Central Appalachians

Cited by 24 publications

References 46 publications

Time and seasonal patterns of activity of phyllostomid in fragments of a stational semidecidual forest from the Upper Paraná River, Southern Brazil

Time and seasonal patterns of activity of phyllostomid in fragments of a stational semidecidual forest from the Upper Paraná River, Southern Brazil

The Role of Small Caves as Bat Hibernacula in Iowa

Habitat-associated and temporal patterns of bat activity in a diverse forest landscape of southern New England, USA

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