| Titre : | Long-term monitoring of tropical bats for anthropogenic impact assessment: Gauging the statistical power to detect population change |
| Auteurs : | Christoph F. J. Meyer, Auteur ; Ludmilla M. S. Aguiar, Auteur ; Luis F. Aguirre, Auteur ; Julio Baumgarten, Auteur ; Frank M. Clarke, Auteur ; Jean-Francois Cosson, Auteur ; Sergio Estrada Villegas, Auteur ; Jakob Fahr, Auteur ; Deborah Faria, Auteur ; Neil Furey, Auteur ; Mickael Henry, Auteur ; Robert Hodgkison, Auteur ; Richard K. B. Jenkins, Auteur ; Kirsten G. Jung, Auteur ; Tigga Kingston, Auteur ; Thomas H. Kunz, Auteur ; M. Cristina MacSwiney G, Auteur ; Isabel Moya, Auteur ; Jean-Marc Pons, Auteur ; Paul A. Racey, Auteur ; Katja Rex, Auteur ; Erica M. Sampaio, Auteur ; Kathryn E. Stoner, Auteur ; Christian C. Voigt, Auteur ; Dietrich von Staden, Auteur ; Christa D. Weise, Auteur ; Elisabeth K. V. Kalko, Auteur |
| Type de document : | Article |
| Dans : | Biological Conservation (143(11) NOV 2010) |
| Article en page(s) : | 2797-2807 |
| Langues: | Anglais |
| Résumé : | Bats are ecologically important mammals in tropical ecosystems; however, their populations face numerous environmental threats related to climate change, habitat loss, fragmentation, hunting, and emerging diseases. Thus, there is a pressing need to develop and implement large-scale networks to monitor trends in bat populations over extended time periods. Using data from a range of Neotropical and Paleotropical bat assemblages, we assessed the ability for long-term monitoring programs to reliably detect temporal trends in species abundance. We explored the magnitude of within-site temporal variation in abundance and evaluated the statistical power of a suite of different sampling designs for several different bat species and ensembles. Despite pronounced temporal variation in abundance of most tropical bat species, power simulations suggest that long-term monitoring programs (>= 20 years) can detect population trends of 5% per year or more with adequate statistical power (>= 0.9). However, shorter monitoring programs ( |



