Utilisation du milieu forestier par les chauves-souris (Mammalia: Chiroptera) du canton de Neuchâtel – implications pour la gestion sylvicole | Utilization of woodland resources by bats (Mammalia: Chiroptera) in the Canton Neuchâtel (Switzerland) – consequences for silviculture

2006 ◽  
Vol 157 (7) ◽  
pp. 254-259 ◽  
Author(s):  
Christophe Jaberg ◽  
Thierry Bohnenstengel ◽  
René Amstutz ◽  
Jean-Daniel Blant

We investigated utilization of wooded vs non wooded areas by 22 bat species in Canton Neuchâtel (Switzerland). Diet, habitat use and roost selection were analysed more thoroughly in Barbastella barbastellus, Rhinolophus ferrumequinum, Myotis bechsteini and Plecotus auritus. Forests appeared to produce more bat occurrences than open habitats. Thermophilous deciduous woodlands were preferred by three species during foraging activities. R. ferrumequinum foraged in semi-open habitats. For roosting, dead trees were used by B. barbastellus and old woodpecker cavities were the main roosts of M. bechsteini. Small defoliating geometrid moths were the main preys of B. barbastellus. Consequences for silviculture are discussed.

Author(s):  
Amyot Kofoky ◽  
Daudet Andriafidison ◽  
Fanja Ratrimomanarivo ◽  
H. Julie Razafimanahaka ◽  
Daniel Rakotondravony ◽  
...  

1988 ◽  
Vol 15 (6) ◽  
pp. 595 ◽  
Author(s):  
CJ Southwell ◽  
CJ Southwell ◽  
MS Fletcher ◽  
MS Fletcher

Diurnal and nocturnal habitat use was determined from walk transect counts in a 40 000 ha study area in SE Queensland containing 3 land systems: (a) alluvial flats mainly clear of natural vegetation; (b) hills extending from the alluvial flats with open forest; and (c) plateaux with grassy and shrubby open forest. Habitat utilization was examined in relation to 3 vegetation variables (shrub density, live tree density and dead tree density) and 3 topographic variables (altitude, aspect and slope). Utilization was most consistent between day and night for live tree density and slope, being biased toward areas of moderate live tree density and against flat areas at both times. A preference for areas with moderate shrub density was more pronounced during the day than at night. Areas with moderate dead tree density were strongly preferred over areas with low dead tree density during the day, but at night there was no strong bias for or against areas with dead trees. M. parryi avoided very low altitudes at all times. Utilization of higher areas varied day and night, a diurnal preference for higher altitudes being ameliorated by some apparent downhill movement to lower slopes at night. A preference during the day for north and west aspects was not evident at night.


2005 ◽  
Vol 32 (2) ◽  
pp. 183 ◽  
Author(s):  
Susan Campbell ◽  
Linda F. Lumsden ◽  
Roger Kirkwood ◽  
Graeme Coulson

The day roosting behaviour of the little forest bat (Vespadelus vulturnus), Australia’s smallest bat, was investigated in the context of the planned removal of dead timber within managed woodlands on Phillip Island, Victoria. Between August 1999 and March 2000, 14 female little forest bats were fitted with VHF microtransmitters and tracked to a total of 16 roost trees. All roosts were located in dead timber, 11 in severely decayed remains of eucalypt trees, and five in dead sections of live trees. Roost trees were compared with randomly chosen trees from within the available habitat, for a range of tree characteristics. Female little forest bats selected roosts in trees with dead timber offering many hollows and reduced canopy cover. Furthermore, roost trees were located in areas (0.1-ha plots) with higher densities of these types of trees than in the available habitat. However, there was no difference in the height or diameter of roost trees or roost plots compared with available habitat. Emergence time from roosts was strongly associated with civil twilight (when the centre of the sun is 6° below an ideal horizon), and the number of bats exiting a single roost tree ranged from 1 to 120 (median = 20). Dead trees provide critical roosting habitat and we recommend retention of dead standing trees for conserving little forest bat roosts in managed woodlands.


2006 ◽  
Vol 16 (4) ◽  
pp. 1039-1053 ◽  
Author(s):  
Amyot Kofoky ◽  
Daudet Andriafidison ◽  
Fanja Ratrimomanarivo ◽  
H. Julie Razafimanahaka ◽  
Daniel Rakotondravony ◽  
...  

Author(s):  
Todd Mattson ◽  
Nancy Stanton ◽  
Steven Buskirk

The silver-haired bat Lasionycteris noctivagans occurs widely across North America (Kunz 1982a) at highly variable densities (Barbour and Davis 1969). Still, little is known of its ecology and behavior, especially of its summer roosting habits (Kunz 1982a). Summer roost sites have been alledged to be mostly in trees, but few reliable records are available (Kunz 1982a). Barclay et al. (1988) searched trees in Manitoba and found silver­haired bats roosting under folds of loose bark during the migration period. Likewise, Parsons et al. (1986) and Novakowski (1956) each reported finding a small maternity colony of silver-haired bats in hollow trees in Canada. Studies in the northwestern United States have suggested that silver-haired bats occur more frequently in late-successional forest dominated by trees over 200 yr old than in early seres (Perkins and Cross 1988, Thomas 1988). This association has been attributed to the presence of high concentrations of standing dead trees, some of which have exfoliated bark, cracks in the wood, and cavities excavated by birds sites that may be preferred by bats for roosting (Perkins and Cross 1988, Thomas 1988). To better understand roost selection and habitat requirements of silver-haired bats, we investigated the roosting ecology of this species in the Black Hills of South Dakota.


2016 ◽  
Vol 544 ◽  
pp. 197-211 ◽  
Author(s):  
A Chin ◽  
MR Heupel ◽  
CA Simpfendorfer ◽  
AJ Tobin

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