Monthly Weights of Snowshoe Hares From North-Central Alberta

1959 ◽  
Vol 40 (2) ◽  
pp. 221-226 ◽  
Author(s):  
W. Rowan ◽  
L. B. Keith
Keyword(s):  
North Central ◽  
Snowshoe Hares

scholarly journals Visitations by Snowshoe Hares (Lepus americanus) to and Possible Geophagy of Materials from an Iron-Rich Excavation in North-Central British Columbia

2013 ◽  
Vol 127 (1) ◽  
pp. 26 ◽  
Author(s):  
Roy V. Rea ◽  
Christina L. Stumpf ◽  
Dexter P. Hodder
Keyword(s):  
British Columbia ◽  
North America ◽  
Fecal Pellet ◽  
Nutritional Stress ◽  
Lepus Americanus ◽  
North Central ◽  
Snowshoe Hares ◽  
Mineral Licks ◽  
Excavation Site

Fecal pellet samples and photo data were collected and analyzed to investigate the suspected occurrence of geophagy of soils by Snowshoe Hares (Lepus americanus) at a small iron-rich mineral excavation in north-central British Columbia. Pellet samples from Snowshoe Hares collected near the excavation site in both February 2004 and 2005 showed higher levels of iron (II) sulphate in pellets than in samples from control areas (P < 0.05). Using remote wildlife camera technology, we determined that Snowshoe Hares accounted for 72% of visits by mammals to the site. Ninety percent of these visits occurred at night; this timing corresponds with the use of mineral licks by several other species of mammals in North America. Use occurred in winter (49%) and spring (47%), but was rare in summer and autumn, and may have coincided with periods of nutritional stress in Snowshoe Hares.

Habitat Selection by Snowshoe Hares in North Central Minnesota

1983 ◽  
Vol 47 (3) ◽  
pp. 686 ◽  
Author(s):  
Pamela J. Pietz ◽  
John R. Tester
Keyword(s):  
Habitat Selection ◽  
North Central ◽  
Snowshoe Hares

scholarly journals Modeling the Influence of Forest Structure on Microsite Habitat Use by Snowshoe Hares

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Angela K. Fuller ◽  
Daniel J. Harrison
Keyword(s):  
Structural Characteristics ◽  
Canopy Closure ◽  
North Central ◽  
Management Guidelines ◽  
Information Theoretic ◽  
Important Prey ◽  
Snowshoe Hares ◽  
Pellet Density ◽  
Northern Forests ◽  
And Function

Snowshoe hare (Lepus americanus) is an important prey species for many Carnivora and has strong influences on community structure and function in northern forests. An understanding of within-stand (microsite) forest structural characteristics that promote high use by hares is important to provide forest management guidelines. We measured forest structural characteristics at the microsite-scale in north-central Maine and used an information-theoretic modeling approach to infer which characteristics were most strongly associated with use by hares during winter. We measured overwinter hare pellet density to model relationships among microsite-scale vegetation structure and hare use. Overwinter pellet density was positively associated with live stem cover (3 × coniferous saplings + deciduous saplings) and negatively associated with overstory canopy closure; the two variables explained 71% of the variation in microsite use by hares. The highest pellet densities were in grids with canopy closure <72% and stem cover units >22,000 stems/ha. Silvicultural practices that create dense areas of conifer and deciduous saplings should receive high within-stand use by hares in winter. These conditions can be achieved by promoting the release of advanced regeneration and reducing overstory cover to encourage establishment of shade-intolerant species; clearcutting is one such silvicultural prescription to achieve these conditions.

Population and habitat characteristics of lynx and snowshoe hares in north central Washington

1990 ◽  
Vol 68 (5) ◽  
pp. 845-851 ◽  
Author(s):  
Gary M. Koehler
Keyword(s):  
Pinus Contorta ◽  
Lodgepole Pine ◽  
Population Characteristics ◽  
Habitat Characteristics ◽  
Snowshoe Hare ◽  
Lynx Lynx ◽  
Habitat Conditions ◽  
North Central ◽  
Natural Fire ◽  
Snowshoe Hares

Lynx (Lynx canadensis) and snowshoe hare (Lepus americanus) population characteristics and use of habitats were studied during 1985–1987 in north central Washington. Lynx used areas above 1463 m elevation that were dominated by lodgepole pine (Pinus contorta) and Engelmann spruce – subalpine fir (Picea engelmannii – Abies lasiocarpa) cover types. Snowshoe hares were the most common prey of lynx, with remains of snowshoe hare occurring in 23 of 29 scats. Counts of tracks and pellets showed snowshoe hares to be most abundant in 20-year-old lodgepole pine stands. Fire suppression and natural fire frequencies in the past 5 decades has limited the amount of these early successional forests, which are important as habitat for snowshoe hares. Marginal habitat conditions for snowshoe hares probably resulted in a scarcity of prey in the study area and may explain the relatively large home ranges of lynx (69 ± 28 km2 for five males and 39 ± 2 km2 for two females), low density of adults (2.3 lynx/100 km2), and high kitten mortality rates (88% for eight kittens in three litters). Demographic characteristics of lynx in the study area may be representative of lynx populations along the southern periphery of their range where habitat conditions are marginal for lynx and snowshoe hares.

The lungworm Protostrongylus boughtoni (Nematoda, Metastrongyloidea) in gastropod intermediate hosts and the snowshoe hare, Lepus americanus

1990 ◽  
Vol 68 (12) ◽  
pp. 2567-2575 ◽  
Author(s):  
Robert A. Kralka ◽  
W. M. Samuel
Keyword(s):  
Snail Species ◽  
Transplacental Transmission ◽  
Intermediate Hosts ◽  
Month Of Birth ◽  
Habitat Types ◽  
North Central ◽  
Snowshoe Hares ◽  
Low Levels ◽  
Forest Habitats ◽  
Protostrongylus Boughtoni

Natural infections of Protostrongylus boughtoni in intermediate and definitive hosts were examined in Boreal Forest habitats of north central Alberta. Vertigo gouldi was the major intermediate host. Prevalence and intensity of P. boughtoni larvae in V. gouldi were similar among habitats, among size classes of V. gouldi, and temporally. Prevalence of P. boughtoni in adult snowshoe hares was 100%; mean intensity varied monthly at relatively low levels. Juvenile snowshoe hares became infected within a month of birth; intensities increased to relatively high within 3 months and then declined, indicating development of an immune response or decreased exposure to infected snails. No evidence was found for transplacental transmission. Relative rates of flow of P. boughtoni were calculated to determine the importance of snail species and habitat types in transmission of the parasite. Vertigo gouldi accounted for nearly all flow from snails to hares, and most of the flow from snails to hares occurred in dry coniferous and mixed wood habitats.

Stromatoporoids from the Famennian (Devonian) Wabamun Formation, Normandville oilfield, north–central Alberta, Canada

1988 ◽  
Vol 62 (03) ◽  
pp. 411-419 ◽  
Author(s):  
Colin W. Stearn
Keyword(s):  
Patch Reef ◽  
Abundant Species ◽  
The Other ◽  
North Central ◽  
Biotic Crisis

Stromatoporoids are the principal framebuilding organisms in the patch reef that is part of the reservoir of the Normandville field. The reef is 10 m thick and 1.5 km2in area and demonstrates that stromatoporoids retained their ability to build reefal edifices into Famennian time despite the biotic crisis at the close of Frasnian time. The fauna is dominated by labechiids but includes three non-labechiid species. The most abundant species isStylostroma sinense(Dong) butLabechia palliseriStearn is also common. Both these species are highly variable and are described in terms of multiple phases that occur in a single skeleton. The other species described areClathrostromacf.C. jukkenseYavorsky,Gerronostromasp. (a columnar species), andStromatoporasp. The fauna belongs in Famennian/Strunian assemblage 2 as defined by Stearn et al. (1988).

Learning Partners in the Americas: North, Central, and South American Contributions

2012 ◽  
Author(s):  
Andres J. Consoli ◽  
Melissa L. Morgan Consoli
Keyword(s):  
South American ◽  
North Central

North Central Cancer Treatment Group[mdash ]Mayo Clinic trials in colon cancer

2001 ◽  
Vol 28 (1B) ◽  
pp. 4-8 ◽  
Author(s):  
Michael J. O'Connell
Keyword(s):  
Colon Cancer ◽  
Treatment Group ◽  
Cancer Treatment ◽  
Mayo Clinic ◽  
North Central
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