scholarly journals Space Use and Seasonal Movement of Isolated Mountain Goat Populations in the North Cascades, WA

2021 ◽  
Author(s):  
Jennifer Sevigny ◽  
Amanda Summers ◽  
Emily George-Wirtz
Keyword(s):  
Spatial Distribution ◽  
Space Use ◽  
Washington State ◽  
Clear Understanding ◽  
North Cascades ◽  
Isolated Populations ◽  
Seasonal Movement ◽  
The North ◽  
Mountain Goats ◽  
Mountain Goat

Abstract The spatial distribution and seasonal movement patterns of isolated populations of mountain goats (Oreamnos americanus) in the North Cascade range of Washington State is not fully understood. Determining harvest potential in these populations is challenging without a clear understanding of spatiotemporal movement, space use, and spatial overlap. Mountain goat populations in the North Cascades are fragmented and many have declined considerably from historic estimates. Identification of harvestable populations requires a clear understanding of population size, distribution, and movement. We investigated the population trends and spatial distribution of mountain goats in the Boulder River North Harvest Area in the Boulder River Wilderness of Washington State. We reviewed recent mountain goat population estimates and used Global Positioning System collar data to determine year-round and seasonal home range distributions, spatial overlap within these ranges, and proximity of mountain goats to roads and trails. We found 2 populations of mountain goats inhabiting the Whitehorse and Three Fingers Mountains in the Boulder River North Harvest Area. These 2 populations were spatially distinct and did not intermix during our study period. We also found mountain goats using exclusive areas seasonally on Whitehorse Peak. The Whitehorse population appeared to be more vulnerable to harvest than Three Fingers based on its proximity to roads and trails. This study provides space use and movement information on mountain goats in the North Cascades Range that can be used to improve harvest management of fragmented and isolated populations. Our results indicate that a re-evaluation of harvest level, harvest unit boundary, and monitoring strategy may be warranted for the Boulder River North mountain goat harvest area.

scholarly journals Space Use and Seasonal Movement of Isolated Mountain Goat Populations in the North Cascades, WA

2020 ◽  
Author(s):  
Jennifer Sevigny ◽  
Amanda Summers ◽  
Emily George-Wirtz
Keyword(s):  
Spatial Distribution ◽  
Space Use ◽  
Washington State ◽  
Clear Understanding ◽  
North Cascades ◽  
Isolated Populations ◽  
Seasonal Movement ◽  
The North ◽  
Mountain Goats ◽  
Mountain Goat

Abstract Background: The spatial distribution and seasonal movement patterns of isolated populations of mountain goats (Oreamnos americanus) in the North Cascade range of Washington State is not fully understood. Determining harvest potential in these populations is challenging without a clear understanding of spatiotemporal movement, space use, and spatial overlap. Mountain goat populations in the North Cascades are fragmented and many have declined considerably from historic estimates. Identification of harvestable populations requires a clear understanding of population size, distribution, and movement. We investigated the population trends and spatial distribution of mountain goats in the Boulder River North Harvest Area in Boulder River Wilderness of Washington State. Methods: We reviewed recent mountain goat population estimates and used Global Positioning System collar data to determine year-round and seasonal home range distributions, spatial overlap within these ranges, and proximity of mountain goats to roads and trails.Results: We found 2 populations of mountain goats inhabiting the Whitehorse and Three Fingers Mountains in the Boulder River North Harvest Area. These 2 populations were spatially distinct and did not intermix during our study period. We also found mountain goats using exclusive areas seasonally on Whitehorse Peak that may represent separate or isolated groups. The Whitehorse population appeared to be more vulnerable to harvest than Three Fingers based on its proximity to roads and trails. Conclusions and Management Recommendations: This study provides space use and movement information on mountain goats in the North Cascades Range that can be used to improve harvest management of fragmented and isolated populations. Our results indicate that a re-evaluation of harvest level, harvest unit boundary, and monitoring strategy may be warranted for the Boulder River North mountain goat harvest area.

Influence of Geological Substrate on Mountain Goat Forage Plants in the North Cascades, Washington State

2017 ◽  
Vol 91 (3) ◽  
pp. 301-313
Author(s):  
Richard B. Harris ◽  
Clifford G. Rice ◽  
Adam G. Wells
Keyword(s):  
Washington State ◽  
North Cascades ◽  
Forage Plants ◽  
The North ◽  
Mountain Goat ◽  
Geological Substrate

Spatial Distribution, Site Fidelity, and Home Range Overlap in the North Cascades Elk Herd: Implications for Management

2018 ◽  
Vol 92 (4) ◽  
pp. 251
Author(s):  
Jennifer Sevigny ◽  
Michael Sevigny ◽  
Emily George-Wirtz ◽  
Amanda Summers
Keyword(s):  
Spatial Distribution ◽  
Home Range ◽  
Site Fidelity ◽  
North Cascades ◽  
Home Range Overlap ◽  
The North ◽  
Range Overlap

Urochordeumatidae Silvestri, 1909, a millipede family endemic to Washington State, USA (Chordeumatida, Striariidea, Striarioidea)

Zootaxa ◽  
2019 ◽  
Vol 4657 (2) ◽  
pp. 352-360
Author(s):  
WILLIAM A. SHEAR ◽  
PAUL E. MAREK
Keyword(s):  
Single Species ◽  
Washington State ◽  
Range Extension ◽  
North Cascades ◽  
The North ◽  
The Family ◽  
Whatcom County ◽  
Subjective Synonym

Urochordeumatidae Silvestri, 1909 includes a single species, Urochordeuma bumpusi Silvestri, 1909, with U. porona Chamberlin, 1941 as a new junior subjective synonym. The family Urochordeumatidae is removed from the superfamily Caseyoidea and transferred to the superfamily Striarioidea. The species is known only from four counties in Washington State in the North Cascades: Pierce, King, Thurston and Whatcom. The occurrence of U. bumpusi from Whatcom County is a significant range extension. 

The moss flora of the alpine – high subalpine Chowder Ridge area, western North Cascades Range, Washington State, U.S.A.

1986 ◽  
Vol 64 (1) ◽  
pp. 146-150 ◽  
Author(s):  
John R. Spence
Keyword(s):  
Rocky Mountain ◽  
High Elevation ◽  
Washington State ◽  
Western North America ◽  
North Cascades ◽  
The West ◽  
The North ◽  
The Pacific ◽  
Ridge Area ◽  
First Time

Chowder Ridge, a high elevation area near Mt. Baker, Washington State, possesses a moss flora of 77 species based on collections made during two visits. Three species, Dicranum muehlenbeckii B.S.G., Rhacomitrium microcarpon (Hedw.) Brid., and Mnium arizonicum Amann, are reported new to Washington State. Coscinodon calyptratus (Hook.) C Jens. and Grimmia ovalis (Hedw.) Lindb. are noted for the first time from the west slope of the North Cascades. Chowder Ridge harbors an unusually large number of disjunts of the Rocky Mountain interior compared with typical sites on the west slope of the North Cascades, while the Pacific North American element is underrepresented. The bulk of the flora consists of species widespread in western North America.

scholarly journals Extensive field-sampling reveals the uniqueness of a trophy mountain goat population

2018 ◽  
Author(s):  
Jessica Breen ◽  
Meghan Britt ◽  
Justin B. Johnson ◽  
Daria Martchenko ◽  
Yasaman Shakeri ◽  
...  
Keyword(s):  
Isolation By Distance ◽  
Genetic Data ◽  
Field Sampling ◽  
Effective Population ◽  
Phenotypic Data ◽  
The North ◽  
Extensive Field ◽  
Goat Population ◽  
Mountain Goats ◽  
Mountain Goat

ABSTRACTCollaborations between academic researchers and agencies is crucial for genetic data to have a tangible impact on conservation and wildlife management. Such partnerships are particularly important elusive species where the difficult terrain requires that a significant amount of resources and a combination of methods be used to estimate population parameters needed for conservation. We report and multi-year academic-agency collaboration on the North American mountain goat that used an extensive field sampling of genetic and phenotypic data to determine whether, and to what degree, genetic and phenotypic differences separate an isolated population of mountain goats on the Cleveland Peninsula form those in southeast Alaska. We observed significantly larger horns on the peninsula and the population appears demographically isolated. Isolation-by-distance accompanied by limited migration and low effective population size on the Cleveland Peninsula suggest this population will continue to lose genetic diversity. While the large horns of mountain goats have generated interest in re-opening mountain goat harvest on Cleveland Peninsula, our genetic data suggest this population is vulnerable to demographic and environmental perturbations and is unlikely to support a sustained harvest.

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