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

The ecology of insectivorous bats in the Simpson Desert central Australia: habitat use.

2004 ◽  
Vol 26 (2) ◽  
pp. 205 ◽  
Author(s):  
AJ Williams ◽  
CR Dickman
Keyword(s):  
Habitat Use ◽  
Food Availability ◽  
Regional Study ◽  
Rock Outcrops ◽  
Insectivorous Bats ◽  
Entire Study ◽  
Bat Activity ◽  
Highly Active ◽  
Simpson Desert ◽  
Entire Study Area

Seven species of insectivorous bats were positively identified within a regional study area in the Simpson Desert in south-western Queensland. This paper describes habitat use by this bat assemblage and the degree to which presence of water, food availability and roosting potential impact on bat activity. Bats predominantly utilised water sources, rock outcrops, dune/swale areas near woodland, dry creek lines and coolibah woodland habitats. However, they rarely used open habitats (open plain and dune/swale), acacia scrub and gidgee woodland. The bats foraged most often over water and on calmer nights, when insects were more active. Although highly active over water in some areas, bats may survive in the Simpson Desert without access to permanent water. Food availability in terms of flying insect abundance and biomass did not appear to significantly determine the use of different habitats. However, activity over the entire study area was concentrated in areas with a higher roosting potential. Consequently both tree and cave roost sites may be a limiting resource, resulting in bat activity being restricted predominantly to oases in the Simpson Desert study area.

Differences in growth rate, body condition, habitat use and food availability between island and mainland lizard populations ofAnolis nebulosusin Jalisco, Mexico

2014 ◽  
Vol 30 (5) ◽  
pp. 493-501 ◽  
Author(s):  
Héctor Hugo Siliceo-Cantero ◽  
Andrés García
Keyword(s):  
Growth Rate ◽  
Habitat Use ◽  
Food Availability ◽  
Body Condition ◽  
Food Supply ◽  
Geographic Isolation ◽  
Seasonal Fluctuations ◽  
Continental Population ◽  
Two Populations

Abstract:Lizards of the genusAnolishave been widely studied, however, little is known about the effects of environmental seasonality, food availability and geographic isolation on body condition, growth rate and habitat use of lizards. The existence of an insular and a continental population ofAnolis nebulosus(clouded anole), separated by only 0.47 km, represents an ideal opportunity to address this topic. We compared seasonal fluctuations in food availability (arthropod density) for anoles, as well as body condition, growth rate and habitat use in the two populations. Food availability throughout the year was sampled every 2 mo by trapping arthropods at each site. Lizards were also monitored and measured every 2 mo by surveying three quadrats in each site over 2 y giving a total of 30 visits for each quadrat. Results suggested that composition and density of food supply was similar for the two populations. Nevertheless, food supply responded to seasonality of rainfall, with an increase of 1.5 times during the rainy season. Despite similarity in food availability, insular anoles had body condition that was 5–10 times better, with growth rate twice as fast, and used similar perches. The role of predation, and inter- and intraspecific competition are discussed as possible drivers.

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 Food availability affects habitat use of Eurasian red squirrels (Sciurus vulgaris) in a semi-urban environment

2016 ◽  
Vol 97 (6) ◽  
pp. 1543-1554 ◽  
Author(s):  
Stephanie Reher ◽  
Kathrin H. Dausmann ◽  
Lisa Warnecke ◽  
James M. Turner
Keyword(s):  
Habitat Use ◽  
Urban Environment ◽  
Food Availability ◽  
Sciurus Vulgaris ◽  
Red Squirrels

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

Managing confined populations: the influence of density on the home range and habitat use of reintroduced burrowing bettongs (Bettongia lesueur)

2004 ◽  
Vol 31 (4) ◽  
pp. 457 ◽  
Author(s):  
Graeme R. Finlayson ◽  
Katherine E. Moseby
Keyword(s):  
Home Range ◽  
Habitat Use ◽  
Food Availability ◽  
Reproductive Output ◽  
Reproductive Effort ◽  
High Density ◽  
Home Ranges ◽  
Low Density ◽  
Reproductive Condition ◽  
Behavioural Changes

The home range, reproductive condition and warren and habitat use of reintroduced female burrowing bettongs was compared within two enclosures in the Arid Recovery Reserve at estimated densities of 2.75 and 7.5 bettongs km–2. Bettongs at both densities exhibited similar behaviour, with females using an average of 2.7 warrens over six months and home ranges averaging 29 and 35 ha in the low- and high-density enclosure respectively. All five female bettongs studied in the low-density enclosure were carrying pouch young at the beginning and end of the six-month study but only one of the five females in the high-density enclosure was carrying pouch young after six months. Higher food availability may have accounted for the higher reproductive effort and slightly smaller home ranges observed in the low-density enclosure. Female bettongs at both densities favoured dune habitat over chenopod swales and all burrows were in dune habitat. Although some differences in reproductive output were observed, it is likely that densities are not yet high enough to cause significant behavioural changes.

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.

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