Transmitter Drops as a Technique for Detecting Black Bear Habitat Use

1994 ◽  
Vol 9 ◽  
pp. 303
Author(s):  
Jeff Beringer ◽  
Steven G. Seibert ◽  
Michael R. Pelton
Keyword(s):  
Habitat Use ◽  
Black Bear

Black Bear Habitat Use in Relation to Food Availability in the Interior Highlands of Arkansas

1994 ◽  
Vol 9 ◽  
pp. 309 ◽  
Author(s):  
Joseph D. Clark ◽  
Daniel L. Clapp ◽  
Kimberly G. Smith ◽  
Belinda Ederington
Keyword(s):  
Habitat Use ◽  
Food Availability ◽  
Black Bear ◽  
Interior Highlands

scholarly journals Prespawning Movements and Spawning Distribution of Sockeye Salmon in an Urbanizing Alaskan Lake

2015 ◽  
Vol 6 (2) ◽  
pp. 472-485 ◽  
Author(s):  
James D.M. Ray ◽  
Suresh A. Sethi ◽  
John H. Eiler ◽  
John E. Joyce
Keyword(s):  
Habitat Use ◽  
Sockeye Salmon ◽  
Planning Process ◽  
Current Knowledge ◽  
Fish Habitat ◽  
Black Bear ◽  
Distribution Patterns ◽  
Shoreline Development ◽  
Land Planning ◽  
Salmon Population

Abstract The efficacy of fish habitat conservation in land planning processes in Alaska is often constrained by the extent of current knowledge of fish distributions and habitat use. In response to requests for information from land and salmon resource management stakeholders regarding Auke Lake sockeye salmon (Oncorhynchus nerka) status and life history, we examined the prespawning movements and spawning distribution of adult sockeye salmon to provide ecological information needed for Auke Lake watershed management. We used radiotelemetry to track the movements of 80 fish in the Auke Lake watershed during 2012. The prespawning distribution of the fish was not random, indicating five spatially and temporally distinct high-use staging areas within the lake. The Auke Lake sockeye salmon population was dominated by stream-spawning fish (98.5%), with minimal lakeshore spawning (1.5%) observed in association with a small intermittent tributary of the lake. The prespawning distribution patterns identified in this study corroborate observations from Auke Lake 20 y ago, indicating consistent habitat use patterns by sockeye salmon in the lake. Telemetry data also indicate 12% of sockeye salmon expired in Auke Lake without spawning and that 14% of stream-spawning fish were preyed upon by black bear (Usrus americanus). The prespawning and spawning behavior by Auke Lake sockeye salmon suggest that discrete lake staging areas and stream spawning beds are important candidate habitats for protection during the land planning process for shoreline development surrounding the lake.

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

scholarly journals Testing a Mahalanobis Distance Model of Black Bear Habitat Use in the Ouachita Mountains of Oklahoma

2007 ◽  
Vol 71 (3) ◽  
pp. 924-928 ◽  
Author(s):  
ERIC C. HELLGREN ◽  
SARA L. BALES ◽  
MARK S. GREGORY ◽  
DAVID M. LESLIE ◽  
JOSEPH D. CLARK
Keyword(s):  
Habitat Use ◽  
Mahalanobis Distance ◽  
Black Bear ◽  
Ouachita Mountains ◽  
Distance Model ◽  
Mahalanobis Distance Model

scholarly journals Individual identification via remote video verified by DNA analysis: a case study of the American black bear

2019 ◽  
Vol 46 (4) ◽  
pp. 326
Author(s):  
Alan B. Ramsey ◽  
Michael A. Sawaya ◽  
Lorinda S. Bullington ◽  
Philip W. Ramsey
Keyword(s):  
Habitat Use ◽  
Dna Analysis ◽  
Black Bear ◽  
Black Bears ◽  
Individual Identification ◽  
Video Cameras ◽  
American Black Bear ◽  
Open Population ◽  
Other Information ◽  
American Black

Context Researchers and managers often use DNA analysis and remote photography to identify cryptic animals and estimate abundance. Remote video cameras are used less often but offer an increased ability to distinguish similar-looking individuals as well as to observe behavioural patterns that cannot be adequately captured with still photography. However, the use of this approach in species with minimally distinguishing marks has not been tested. Aims To determine the utility and accuracy of distinguishing characteristics of American black bears, Ursus americanus, observed on remote video for identifying individuals in an open population. Methods We compared individuals identified on video with individuals and their sex identified by DNA analysis of hairs collected from hair traps visited by the bears. Key results We found that remote video could be used to determine the number of male and female black bears sampled by the video cameras. Specifically, we matched 13 individual bear genotypes with 13 video identifications, one genotype for each individual. We correctly matched ~82% of video identifications with all 38 genotypes collected from hair traps. Conclusions We demonstrated that distinguishing characteristics of a cryptic animal in remote video can be used to accurately identify individuals. Remote video complements genetic analysis by providing information about habitat use and behaviour. Implications When remote video cameras can be used to identify individuals, a wealth of other information will subsequently be obtained. Multi-year video-based studies can show sex ratios, and relative physical condition; shed light on fine-scale habitat use, such as when and where animals feed and what they eat; and display social interactions and rare behaviours.

Female Black Bear Habitat Use in West-Central Idaho

1989 ◽  
Vol 53 (3) ◽  
pp. 668 ◽  
Author(s):  
James W. Unsworth ◽  
John J. Beecham ◽  
Lynn R. Irby
Keyword(s):  
Habitat Use ◽  
Black Bear ◽  
West Central ◽  
Central Idaho

Impacts of large-scale restoration efforts on black bear habitat use in Canyon de Chelly National Monument, Arizona, United States

2016 ◽  
Vol 97 (4) ◽  
pp. 1065-1073 ◽  
Author(s):  
Catherine A. Tredick ◽  
Marcella J. Kelly ◽  
Michael R. Vaughan
Keyword(s):  
United States ◽  
Habitat Use ◽  
Wildlife Management ◽  
Large Scale ◽  
Black Bear ◽  
Occupancy Modeling ◽  
Modeling Framework ◽  
Russian Olive ◽  
American Black Bear ◽  
National Monument

Abstract Impacts of large-scale changes in habitat due to human development, invasive species, and climate change are important considerations for wildlife management. Likewise, as efforts increase to recover and restore human-altered landscapes, indirect consequences on nontarget components of the restored ecosystem also must be considered. Currently, efforts are underway to eradicate nonnative Russian olive (Elaeagnus angustifolia) and tamarisk (Tamarix spp.) in Canyon de Chelly National Monument (CACH), United States, yet impacts to native wildlife, including the American black bear (Ursus americanus), which relies on these species for escape cover and foraging habitat, are not fully understood. Further, these efforts have the potential to impact sociopolitical aspects of the ecosystem, namely human–bear interactions (e.g., raiding of crops and livestock). We used occupancy modeling to evaluate black bear foraging ecology and habitat use in CACH to better understand how bears are using native and nonnative habitat resources and how restoration efforts may impact bears and human–bear interactions. We found that black bears rely heavily on Russian olive for food and that habitat use is driven by both native and nonnative (i.e., Russian olive) food resources; thus, restoration of native habitat in CACH may have negative impacts on bears through loss of a primary nonnative food source and escape cover. Furthermore, bear–human interactions may temporarily increase in the short term as bears adjust to this loss. Evaluating habitat use in an occupancy modeling framework provides an effective means for gauging nontarget impacts of restoration efforts on wildlife species, an essential step in effective wildlife management.

Using a novel method of potential available energy to determine masting condition influence on sex-specific habitat selection by Asiatic black bears

Mammalia ◽  
2018 ◽  
Vol 82 (3) ◽  
pp. 288-297 ◽  
Author(s):  
Yoshihiro Umemura ◽  
Shinsuke Koike ◽  
Chinatsu Kozakai ◽  
Koji Yamazaki ◽  
Yui Nemoto ◽  
...  
Keyword(s):  
Habitat Selection ◽  
Habitat Use ◽  
Resource Availability ◽  
Vegetation Type ◽  
Black Bear ◽  
Asiatic Black Bear ◽  
Gps Collars ◽  
Available Energy ◽  
Novel Method ◽  
Mast Production

Abstract Habitat selection is assumed to accrue fitness benefits. Where resource availability is variable, individuals should respond by changing habitat selection to increase resource availability. However, direct links between observed changes in habitat selection and energetic benefits of this behavior are rarely detected. We used a novel method whereby we converted interannual production levels of three hard-mast-producing Fagaceae species into a comparative energetic productivity score to investigate potential energetic benefits of Asiatic black bear habitat selection. We captured and fitted GPS collars on 19 bears between 2006 and 2010 in the Ashio-Nikko Mountains, Japan. We also collected data on hard-mast production and integrated these data with fine-scale vegetation maps. Then we mapped the potential available mast energetic production for each vegetation type to evaluate their potential energetic benefit for bears. Habitat use differed between poor and good mast years. Bears mostly used Japanese oak in good mast years, and there were sexual differences in September of poor mast years; females used mostly Japanese oak, whereas males used Konara oak. In those years, bears may have benefitted energetically by changing habitat use; however, the mean potential available energy to bears never exceeded that in good mast years, even if they used different habitats.

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