CHARACTERISTICS OF TREE ROOSTS OF RAFINESQUE'S BIG-EARED BAT AND SOUTHEASTERN BAT IN NORTHEASTERN LOUISIANA
- 1 March 2004
- journal article
- Published by Southwestern Association of Naturalists in The Southwestern Naturalist
- Vol. 49 (1), 61-67
- https://doi.org/10.1894/0038-4909(2004)049<0061:cotror>2.0.co;2
Abstract
We found 44 Corynorhinus rafinesquii and 1 Myotis austroriparius tree roosts during the summer of 2000 on D'Arbonne National Wildlife Refuge in northeastern Louisiana. Corynorhinus rafinesquii and M. austroriparius are species of concern throughout their range. Little information exists on tree roosts of either species. The roost trees found in our study were hollow Nyssa aquatica with triangular-shaped basal openings, and all were located within a 5-ha tupelo stand. A high density of large-diameter cavity trees and a closed canopy characterized this stand. A canal bisected the stand and provided a source of permanent water. Roost trees and non-roost trees could not be compared due to biases in sampling technique. More research directed at roost selection factors by these bats is needed to form conservation plans; however, preliminary information indicates many, large-diameter cavity trees, especially Nyssa tree species, within bottomland hardwood forests are important as tree roosts for these bats. Encontramos 44 dormideros arbóreos de Corynorhinus rafinesquii y uno de Myotis austroriparius durante el verano del 2000 en el Refugio Nacional de Fauna Silvestre D'Arbonne en el noroeste de Louisiana. Corynorhinus rafinesquii y M. austroriparius son especies catalogadas de interés por toda su extensión. Existe poca información sobre los dormideros arbóreos de cualquiera de las dos especies. Los árboles en que se encontraron los dormideros fueron los de Nyssa aquatica ahuecados, con aberturas triangulares basares, y todos fueron ubicados dentro de un soto de nisas de tamaño de 5 hectáreas. Este soto se caracterizó por una alta densidad de árboles de gran diámetro con huecos y con un dosel completo. El soto fue cruzado por un canal, que proveyó una fuente permanente de agua. Los árboles con dormideros no pudieron ser comparados con los árboles sin dormideros a causa de diferencias en las técnicas de muestreo. Para formar un programa de conservación, se necesita más investigación sobre los factores pertinentes a la selección de dormideros por estos murciélagos; pero la información preliminar indica que para dormideros de estos murciélagos, es importante tener muchos árboles de gran diámetro con huecos, especialmente del género Nyssa, dentro de los bosques caducifolios de tierra baja.Keywords
This publication has 10 references indexed in Scilit:
- Nest Survival of Forest Birds in the Mississippi Alluvial ValleyThe Journal of Wildlife Management, 2001
- DAY-ROOST SELECTION BY RAFINESQUE'S BIG-EARED BATS (CORYNORHINUS RAFINESQUII) IN LOUISIANA FORESTSJournal of Mammalogy, 2001
- Impact of forest type and management strategy on avian densities in the Mississippi Alluvial Valley, USAForest Ecology and Management, 1999
- Roost Fidelity of Bats: A ReviewJournal of Mammalogy, 1995
- Flexibility in foraging and roosting behaviour by the big brown bat (Eptesicus fuscus)Canadian Journal of Zoology, 1991
- Myotis austroripariusMammalian Species, 1989
- Load Carrying and Maneuverability in an Insectivorous Bat: a Test of the 5% "Rule" of Radio-TelemetryJournal of Mammalogy, 1988
- Roost Selection by Goulds Long-Eared Bat, Nyctophilus-Gouldi Tomes (Chiroptera, Vespertilionidae), in Logged Forest on the South Coast of New South-WalesWildlife Research, 1988
- Plecotus rafinesquiiMammalian Species, 1977
- Life History and Ecology of Myotis austroriparius in FloridaJournal of Mammalogy, 1957