English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Activity patterns and habitat preferences of insectivorous bats in a West African forest-savanna mosaic

Meyer, C. F. J., Schwarz, C. J., & Fahr, J. (2004). Activity patterns and habitat preferences of insectivorous bats in a West African forest-savanna mosaic. Journal of Tropical Ecology, 20, 397-407. doi:10.1017/S0266467404001373.

Item is

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Meyer, Christoph F. J., Author
Schwarz, C. J., Author
Fahr, Jakob1, Author           
Affiliations:
1Universität Ulm, ou_persistent22              

Content

show
hide
Free keywords: -
 Abstract: We studied activity patterns and habitat use by insectivorous bats in Comoé National Park, Ivory Coast. Bat foraging activity was quantified along five transects representing three different habitat types using acoustic monitoring and captures with mist nets and harp traps. Aerial insect abundance was assessed using a light trap; in addition shrub and tree arthropods were sampled. Bat activity was significantly and positively related to insect availability and ambient temperature, whereas increased visibility of the moon had a negative influence on flight activity. Together, these factors best explained both total bat activity and activity of bats hunting in open space and edge habitats. The interaction between temperature and light intensity was the best predictor of activity by species foraging in obstacle-rich forest habitats, however, the regression model had a low predictive value. Overall, a large proportion (c. 50%) of the variation in bat activity appeared to be a consequence of transect- and/or habitat-specific influences. We found a significant non-linear relationship between the activity of QCF (quasi-constant frequency) and FM-QCF (frequency modulated - quasi-constant frequency) bats and the phase of the moon, with lowest levels of activity occurring near full moon. We interpret this lunar-phobic behaviour as a reflection of a higher predation risk during moonlit periods. For FM (steep frequency modulated) and CF (constant frequency) bats, no significant correlation was found, although there was a trend suggesting that these bats at least were not negatively affected by bright moonlight. Foraging activity of bats was positively correlated with the abundance of atympanate moths; however, no such correlation was found for tympanate moths.

Details

show
hide
Language(s):
 Dates: 2004
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000222985200005
DOI: 10.1017/S0266467404001373
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Journal of Tropical Ecology
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Cambridge [England] : Published for INTECOL and the ICSU Press by Cambridge University Press
Pages: - Volume / Issue: 20 Sequence Number: - Start / End Page: 397 - 407 Identifier: ISSN: 0266-4674
CoNE: https://pure.mpg.de/cone/journals/resource/954925341739