Pre and Post Breakup Movements and Space Use of Black Bear Family Groups in Cherokee National Forest, Tennessee

1990 ◽  
Vol 8 ◽  
pp. 289 ◽  
Author(s):  
Anthony P. Clevenger ◽  
Michael R. Pelton
Keyword(s):  
Space Use ◽  
Black Bear ◽  
National Forest ◽  
Family Groups

Comparison between telemetry and spot-mapping to determine space use of the Kenyan endemic Hinde's babbler

2018 ◽  
Vol 34 (6) ◽  
pp. 395-399 ◽  
Author(s):  
Christina Fischer ◽  
Jan Christian Habel
Keyword(s):  
Home Range ◽  
Riparian Vegetation ◽  
Agricultural Land ◽  
Research Question ◽  
Space Use ◽  
Telemetry Data ◽  
Long Distance ◽  
Breeding Bird ◽  
Spot Mapping ◽  
Family Groups

Abstract:Different methods to measure species behaviour and space use may produce diverging results, and provide advantages and shortcomings. Data from spot-mapping of animals might be affected from restricted detectability of individuals in dense vegetation, while radio-tracking provides a less biased (or even unbiased) measure of space use. Here we compare results from spot-mapping and telemetry of four family groups (i.e. five individuals belonging to these four family groups), respectively of the Kenyan endemic cooperative-breeding bird Hinde's babbler, Turdoides hindei. Data from spot-mapping showed that the space use of T. hindei is mostly restricted to riparian vegetation. Home-range sizes calculated from telemetry were five times larger if compared with data obtained from spot-mapping. Telemetry data showed that T. hindei also moves across agricultural land, and mean and maximum displacements are larger if compared with data obtained from spot-mapping. Several reasons might lead to these differences: (1) Telemetry data also consider rare long-distance excursions, while (2) observers of spot-mapping might fail to observe long-distance movements and thus underestimate home-range sizes as well as displacement distances; (3) results from telemetry might become blurred from measurement error during the triangulation of fixes. Our study confirms that both methods provide advantages, but also shortcomings, which need to be considered when selecting a method to elaborate a research question.

Black Bear Habitat Use in Tahoe National Forest, California

1986 ◽  
Vol 6 ◽  
pp. 65
Author(s):  
William E. Grenfell ◽  
Allan J. Brody
Keyword(s):  
Habitat Use ◽  
Black Bear ◽  
National Forest

Notes on Early Winter Food Habits of the Black Bear in George Washington National Forest

1939 ◽  
Vol 20 (3) ◽  
pp. 310 ◽  
Author(s):  
Clarence Cottam ◽  
A. L. Nelson ◽  
Talbott E. Clarke
Keyword(s):  
Food Habits ◽  
Black Bear ◽  
National Forest ◽  
Early Winter ◽  
George Washington ◽  
Winter Food

Space use by Eurasian lynx in relation to reindeer migration

2006 ◽  
Vol 84 (4) ◽  
pp. 546-555 ◽  
Author(s):  
Anna C. Danell ◽  
Henrik Andrén ◽  
Peter Segerström ◽  
Robert Franzén
Keyword(s):  
Rangifer Tarandus ◽  
Space Use ◽  
Lynx Lynx ◽  
Northern Sweden ◽  
Eurasian Lynx ◽  
Winter Range ◽  
Order Of Magnitude ◽  
Summer Range ◽  
Autumn And Winter ◽  
Family Groups

Semi-domesticated reindeer ( Rangifer tarandus tarandus (L., 1758)) is the primary prey of Eurasian lynx ( Lynx lynx (L., 1758)) in northern Sweden. The reindeer migrate between winter range in the forest and summer range in the mountains, a distance of 100–150 km. We studied space use by Eurasian lynx in relation to seasonal fluctuations of their primary prey in northern Sweden. The seasonal activity range sizes for males and single females were not significantly different between the three periods of the year (December–April, May–July, and August–November). The activity range size for family groups (i.e., female with kittens) was significantly smaller during summer than during autumn and winter. The mean distance between the centre of an individual lynx's activity range in one season to the centre of the activity range in the season immediately following did not differ significantly between seasons; mean distances were 6.6 km for males, 7.3 km for single females, and 8.4 km for family groups. This is about one order of magnitude shorter than the distance between summer and winter ranges for reindeer (100–150 km). The grand mean overlap between a lynx's activity range in one season and the next season was more than 40%. Hence, Eurasian lynx in northern Sweden do not appear to move with the migrating semi-domesticated reindeer.

Habitat selection by black bears in an intensively logged boreal forest

2008 ◽  
Vol 86 (11) ◽  
pp. 1307-1316 ◽  
Author(s):  
Vincent Brodeur ◽  
Jean-Pierre Ouellet ◽  
Réhaume Courtois ◽  
Daniel Fortin
Keyword(s):  
Habitat Selection ◽  
Home Range ◽  
Boreal Forest ◽  
Forest Cover ◽  
Spatial Scales ◽  
Space Use ◽  
Black Bear ◽  
Black Bears ◽  
Ground Vegetation ◽  
Use Patterns

Extensive logging of the boreal forest rejuvenates landscapes once dominated by old-growth stands. As black bear ( Ursus americanus Pallas, 1780) fitness and behavior are known to be primarily related to the abundance of shade-intolerant soft mast species in northern forests, we hypothesized that logging will influence habitat and space use patterns of black bears. We used VHF telemetry on 12 female black bears in the Réserve faunique des Laurentides (Quebec, Canada) to investigate seasonal patterns of habitat selection in an exploited heterogeneous boreal landscape at different spatial scales. Habitat characterization based on seven forest cover types allowed us to compare the productivity of key forage species in various post-logging age classes. Regenerating stands (6–20 years old) had the uppermost ground vegetation cover, providing both the highest density and a high biomass of berries. Black bears preferred regenerating stands (6–20 years old) and avoided mature coniferous forests inside their home range. Home-range size was inversely related to the proportion of regenerating stands (6–20 years old). Intensive logging influenced black bear habitat and space use patterns, and presumably their population dynamics. An increase in the habitat quality of an opportunistic predator poses great concern for conservation, especially for forest-dwelling woodland caribou ( Rangifer tarandus caribou (Gmelin, 1788)).

How artificial feeding for tourism-watching modifies black bear space use and habitat selection

2014 ◽  
Vol 78 (7) ◽  
pp. 1228-1238 ◽  
Author(s):  
Sophie Massé ◽  
Christian Dussault ◽  
Claude Dussault ◽  
Jacques Ibarzabal
Keyword(s):  
Habitat Selection ◽  
Space Use ◽  
Black Bear ◽  
Artificial Feeding
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