Assessment of lake sensitivity to acidic deposition in national parks of the Rocky Mountains

2009 ◽  
Vol 19 (4) ◽  
pp. 961-973 ◽  
Author(s):  
L. Nanus ◽  
M. W. Williams ◽  
D. H. Campbell ◽  
K. A. Tonnessen ◽  
T. Blett ◽  
...  
2020 ◽  
Vol 98 (5) ◽  
pp. 287-298
Author(s):  
M. Barrueto ◽  
M.A. Sawaya ◽  
A.P. Clevenger

Large carnivores are sensitive to human-caused extirpation due to large home ranges, low population densities, and low reproductive rates. Protected areas help maintain populations by acting as sources, but human-caused mortality, habitat displacement, and edge effects occurring at protected area boundaries may reduce that function. The national parks Banff, Yoho, and Kootenay in the Canadian Rocky Mountains are refugia for large carnivores, including wolverines (Gulo gulo (Linnaeus, 1758)). Despite growing conservation concern, empirical baseline population data for wolverines remain scarce throughout their range, including most of Canada. We hypothesized (i) that in these national parks, wolverine density matched values expected for high-quality habitat, and (ii) that edge effects decreased density towards park boundaries. We conducted systematic non-invasive genetic sampling surveys covering >7000 km2 (2011 and 2013). Using spatial capture–recapture models, we estimated mean (±SE) female (1.5 ± 0.3 and 1.4 ± 0.3 wolverine/1000 km2), male (1.8 ± 0.4 and 1.5 ± 0.3 wolverine/1000 km2), and combined (3.3 ± 0.5 and 3.0 ± 0.4 wolverine/1000 km2) densities for 2011 and 2013, respectively. These estimates were lower than predictions based on density extrapolation from nearby high-quality habitat, and density decreased towards park boundaries. To benefit the population, we recommend creating buffer zones around parks that protect female habitat and prohibit harvest.


1985 ◽  
Vol 22 (7) ◽  
pp. 1093-1101 ◽  
Author(s):  
Gerald Osborn

Waterton Lakes National Park in Alberta and Glacier National Park in Montana lie along adjacent sections of the continental divide in the Rocky Mountains. In cirques or near divides there is evidence for two ages of glacial deposits. Younger deposits are generally well preserved, poorly vegetated, and bear no tephra and no or very small lichens. Older deposits are more poorly preserved, better vegetated, bear Rhizocarpon sp. lichens at least up to 92 mm in diameter, and bear tephra. The tephra often occurs in two different coloured horizons, but both are compositionally equivalent to Mazama tephra.The older advance has a minimum age of about 6800 14C years BP and a probable maximum age of about 12 000 14C years BP. It is correlated with the pre-Mazama Crowfoot Advance of the Canadian Rockies. Deposits of the younger advance are probably not too much older than mid-19th century, because some glaciers began retreating from the deposits about then. The younger advance is correlated to the Cavell Advance of the Canadian Rockies and the Gannett Peak Advance of the American Rockies.Both advances were minor. The older advance left moraines about 1.5 km or less beyond present glacier margins and depressed ELA's an average of 40 m below modern values.


Author(s):  
Robert Kitchin

The cutthroat trout, Salmo clarki, is the trout species native to the Rocky Mountains on both sides of the Continental Divide. The widespread distribution of cutthroat trout in several independent drainages has resulted in the formation of considerable morphological and behavioral diversity both within and between cutthroat trout populations. Behnke has described several different subspecies of Salmo clarki on the basis of their meristic serological characteristics. However, because the genetic basis of these characteristics is unknown, the results of these studies have been inconclusive for the taxonomic designations of cutthroat trout subspecies in Grand Teton and Yellowstone National Parks.


10.1029/ft328 ◽  
1989 ◽  
Author(s):  
J. David Love ◽  
Gerald E. Nelson ◽  
William G. Pierce ◽  
Roderick A. Hutchinson ◽  
James C. Coogan ◽  
...  

2006 ◽  
Vol 6 (1) ◽  
pp. 129-155 ◽  
Author(s):  
PearlAnn Reichwein

Abstract Through the 1920s, hydro development proposals for irrigation and power dams impinged on Canada's national parks in the Rockies. The Alpine Club of Canada — a mountaineering organization formed in 1906 — rallied opposition to dams and insisted that national parks were an inviolable public domain. National Parks Commissioner J.B. Harkin and ACC Director A.O. Wheeler created an alliance that highlighted the club's role as a key interest group and recreational stakeholder with a shared vision of the mountain parks. Conflicts over dams in Rocky Mountains and Waterton Lakes national parks were politically and philosophically compared to the great battle of the “Hetch Hetchy” aqueduct in California.


Author(s):  
Bryant Woods ◽  
Tad Weaver

Exotic plants occur in national parks and forests throughout the northern Rocky Mountains. We report here progress on a study to determine their physiological and ecological ranges within major environmental zone of the region. To date, we have clarified objectives, refined methodology, and sampled 80-85% of initial sites chosen in Glacier NP. We begin data analysis in January, and will sample in both Grand Teton and Glacier in the coming summer.


2008 ◽  
Vol 42 (17) ◽  
pp. 6487-6493 ◽  
Author(s):  
Leora Nanus ◽  
Mark W. Williams ◽  
Donald H. Campbell ◽  
Emily M. Elliott ◽  
Carol Kendall

Author(s):  
William Burnham

Peregrine falcons were never numerous relative to most other avian species, however, many historic nesting sites are known. In the Rocky Mountains approximately 50% of these sites exist in National Parks and Monuments. This year The Peregrine Fund, in cooperation with the Wyoming Game and Fish, Grand Teton National Park, and Bridger-Teton National Forest began restoration of the species in the Tetons. Three release sites were selected on high cliffs overlooking Jackson and Phelps Lakes in Grand Teton National Park.


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