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

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.

scholarly journals Temporally dynamic habitat suitability predicts genetic relatedness among caribou

2014 ◽  
Vol 281 (1792) ◽  
pp. 20140502 ◽  
Author(s):  
Glenn Yannic ◽  
Loïc Pellissier ◽  
Maël Le Corre ◽  
Christian Dussault ◽  
Louis Bernatchez ◽  
...  
Keyword(s):  
Habitat Selection ◽  
Habitat Use ◽  
Genetic Relatedness ◽  
Landscape Heterogeneity ◽  
Isolation By Distance ◽  
Temporal Variations ◽  
Genetic Connectivity ◽  
Landscape Permeability ◽  
Conservation Implications ◽  
Distance Model

Landscape heterogeneity plays a central role in shaping ecological and evolutionary processes. While species utilization of the landscape is usually viewed as constant within a year, the spatial distribution of individuals is likely to vary in time in relation to particular seasonal needs. Understanding temporal variation in landscape use and genetic connectivity has direct conservation implications. Here, we modelled the daily use of the landscape by caribou in Quebec and Labrador, Canada and tested its ability to explain the genetic relatedness among individuals. We assessed habitat selection using locations of collared individuals in migratory herds and static occurrences from sedentary groups. Connectivity models based on habitat use outperformed a baseline isolation-by-distance model in explaining genetic relatedness, suggesting that variations in landscape features such as snow, vegetation productivity and land use modulate connectivity among populations. Connectivity surfaces derived from habitat use were the best predictors of genetic relatedness. The relationship between connectivity surface and genetic relatedness varied in time and peaked during the rutting period. Landscape permeability in the period of mate searching is especially important to allow gene flow among populations. Our study highlights the importance of considering temporal variations in habitat selection for optimizing connectivity across heterogeneous landscape and counter habitat fragmentation.

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 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 Phylogeography and population genomics of the American black bear (ursus americanus)

2015 ◽  
Author(s):  
◽  
Emily Elizabeth Puckett
Keyword(s):  
Population Genetics ◽  
Ursus Americanus ◽  
Population Genomics ◽  
Black Bear ◽  
Ouachita Mountains ◽  
American Black Bear ◽  
Inference Problems ◽  
Founding Population ◽  
Interior Highlands ◽  
American Black

The American black bear (Ursus americanus) is one of the eight living species of Ursidae, and the only one to have speciated in North America (1.8 - 1.2 Mya). This dissertation investigates the contemporary population structure of American black bears across their range; and specifically asks how a translocation of bears affected the population genetics of individuals in the Central Interior Highlands. Black bear mitochondrial lineages began forming within the last 170 kya, whereas the eastern and western nuclear genomes diverged 67 kya. A third nuclear lineage was discovered in contemporary Alaska, which diverged from the eastern lineage 31 kya. These three lineages harbor nine genetic clusters, and potentially more in unsampled portions of the range. These nine clusters may represent evolutionary significant units for the species; however, more work would be needed before proposing taxonomic revisions. The regional population genetics of the Central Interior Highlands (Arkansas, Oklahoma, and Missouri, USA) showed that the majority of genetic diversity in contemporary populations of the Ozark and Ouachita Mountains was introduced from Minnesota, USA and Manitoba, Canada during a translocation of bears from 1958 - 1968. Analyses also indicated that the contemporary Ozark and Ouachita populations were genetically differentiated. Additionally, bears that form a low diversity genetic cluster in Missouri were highly similar to bears from the Ozarks in genomic analyses, indicating a small founding population dispersed northwards following the reintroduction. Finally, I analyzed the accuracy and precision with which the natal location of a black bear may be identified using different inference methods and dataset compositions. While samples were estimated within 201 km of their sample site and with high precision, there was a low correlation between the state or province of sampling and that estimated. These results suggest caution when using genetic data for natal inference problems in cases for trade of wildlife products.

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
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