Seasonal distribution and aerial surveys of mountain goats in Mount Rainier, North Cascades, and Olympic National Parks, Washington

The National Park Service (NPS) has tested and used passive ozone samplers for several years to get baseline values for parks and to determine the spatial variability within parks. Experience has shown that the Ogawa passive samplers can provide ±10% accuracy when used with a quality assurance program consisting of blanks, duplicates, collocated instrumentation, and a standard operating procedure that carefully guides site operators. Although the passive device does not meet EPA criteria as a certified method (mainly, that hourly values be measured), it does provide seasonal summed values of ozone. The seasonal ozone concentrations from the passive devices can be compared to other monitoring to determine baseline values, trends, and spatial variations. This point is illustrated with some kriged interpolation maps of ozone statistics. Passive ozone samplers were used to get elevational gradients and spatial distributions of ozone within a park. This was done in varying degrees at Mount Rainier, Olympic, Sequoia–Kings Canyon, Yosemite, Joshua Tree, Rocky Mountain, and Great Smoky Mountains national parks. The ozone has been found to vary by factors of 2 and 3 within a park when average ozone is compared between locations. Specific examples of the spatial distributions of ozone in three parks within California are given using interpolation maps. Positive aspects and limitations of the passive sampling approach are presented.

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Seasonal Distribution and Abundance of Dugongs in the Western-Gulf-of-Carpentaria

Wildlife Research ◽

10.1071/wr9890141 ◽

1989 ◽

Vol 16 (2) ◽

pp. 141 ◽

Cited By ~ 7

Author(s):

P Bayliss ◽

WJ Freeland

Keyword(s):

Relative Density ◽

Relative Abundance ◽

Coastal Waters ◽

Seasonal Changes ◽

Aboriginal People ◽

Dry Season ◽

Seasonal Distribution ◽

Wet Season ◽

Aerial Surveys ◽

The 1960S

Aerial surveys of coastal waters (27 216 km2) in the western Gulf of Carpentaria during the dry season of 1984 and wet season of 1985 indicated no major seasonal changes in distribution and relative abundance of dugongs. Minimum population size in the dry season was estimated as 16 816 � 2946 (standard error), with a relative density of 0.62 k 0.11 km-2, and that for the wet season 16 846 + 3257, with a relative density of 0.62 � 0.12 km-2. The estimates exclude 5% of observations which could have been either dugongs or Irrawaddy dolphins, and were corrected for submerged dugongs and those missed on the surface. Dugongs were unevenly distributed over the study area, and neither mean group size nor proportion of calves varied between seasons. Dugong abundance was correlated with area of available seagrass. The catch rate of dugongs by Aboriginal people off Numbulwar decreased six-fold between the 1960s and 1985 (60 to 10 p.a.), possibly due to excessive hunting.

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Birds of the National Parks Rules and Regulations, Mount Rainier National Park Rocky Mountain National Park Sequoia and General Grant National Parks Yellowstone National Park Yosemite National Park

The Auk ◽

10.2307/4073192 ◽

1920 ◽

Vol 37 (4) ◽

pp. 614-614

Keyword(s):

National Parks ◽

Yellowstone National Park ◽

National Park ◽

Rocky Mountain ◽

Rocky Mountain National Park ◽

Yosemite National Park ◽

Mount Rainier ◽

Mount Rainier National Park

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Whitebark Pine in the Northern Cascades: Tracking the Effects of Blister Rust on Population Health in North Cascades National Park Service Complex and Mount Rainier National Park

10.20944/preprints201802.0148.v1 ◽

2018 ◽

Cited By ~ 2

Author(s):

Regina Rochefort ◽

Shay Howlin ◽

Lacey Jeroue ◽

John Boetsch ◽

Lise Grace

Keyword(s):

National Park ◽

National Park Service ◽

Mortality Rates ◽

Whitebark Pine ◽

North Cascades ◽

Blister Rust ◽

Mountain Pine ◽

Mount Rainier ◽

Mount Rainier National Park ◽

Park Service

Whitebark pine (Pinus albicaulis Engelm.) is a key component of subalpine and alpine ecosystems in the northern Cascades. The species survival is threatened by white pine blister rust, mountain pine beetles, fire exclusion, and climate change. Trees were monitored in permanent plots in two national parks three times between 2004 and 2016. The proportion of trees showing signs of blister rust infection increased in North Cascades National Park Service Complex from 32% in 2004 to 51% in 2016 and from 18% to 38% in Mount Rainier National Park. Mortality increased from 7% to 21% in North Cascades National Park Service Complex and 38% to 44% in Mount Rainier National Park. Annual mortality rates were calculated for three time periods: 2004-2009, 2009-2015/2016, and 2004-2015/2016. Mortality rates, annualized across the entire study period, were 1.47% in Mount Rainier National Park and 2.27% in North Cascades National Park Service Complex; these rates decreased between the first time period and the second, which could reflect blister rust resistance. Signs of mountain pine beetle were rare and limited to a few trees in individual plots. Although reproductive trees were found in most stands, densities were low and regeneration was dominated by subalpine fir.

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Atmospheric deposition, water-quality, and sediment data for selected lakes in Mount Rainer, North Cascades, and Olympic National Parks, Washington, 2008-10

Data Series ◽

10.3133/ds721 ◽

2012 ◽

Cited By ~ 2

Author(s):

Rich W. Sheibley ◽

James R. Foreman ◽

Patrick W. Moran ◽

Peter W. Swarzenski

Keyword(s):

Water Quality ◽

Atmospheric Deposition ◽

National Parks ◽

North Cascades ◽

Sediment Data

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

10.21203/rs.3.rs-84165/v2 ◽

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.

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Peary caribou distribution within the Bathurst Island Complex relative to the boundary proposed for Qausuittuq National Park, Nunavut

Rangifer ◽

10.7557/2.35.2.3635 ◽

2015 ◽

Vol 35 (2) ◽

pp. 81 ◽

Cited By ~ 2

Author(s):

Kim G. Poole ◽

Anne Gunn ◽

Jack Wierzchowski ◽

Morgan Anderson

Keyword(s):

Protected Areas ◽

National Park ◽

Rangifer Tarandus ◽

High Arctic ◽

Seasonal Distribution ◽

Migration Patterns ◽

Winter Range ◽

Aerial Surveys ◽

Northeast Coast

How caribou (Rangifer tarandus), including Peary caribou (R. t. pearyi), use their annual ranges varies with changes in abundance. While fidelity to some seasonal ranges is persistent, use of other areas changes. Consequently, understanding changes in seasonal distribution is useful for designing boundaries of protected areas for caribou conservation. A case in point is the proposed Qausuittuq (Northern Bathurst Island) National Park for Bathurst Island and its satellite islands in the High Arctic of Canada. Since 1961, Peary caribou have been through three periods of high and low abundance. We examined caribou distribution and composition mapped during nine systematic aerial surveys (1961–2013), unsystematic helicopter surveys (1989–98), and limited radio-collaring from 1994–97 and 2003–06. While migration patterns changed and use of southern Bathurst Island decreased during lows in abundance, use of satellite islands, especially Cameron Island for winter range, persisted during both highs and lows in abundance. The northeast coast of Bathurst Island was used to a greater extent during the rut and during summer at low abundance. We suggest that Park boundaries which include Cameron Island and the northeast coast of Bathurst Island will be more effective in contributing to the persistence of Peary caribou on the Bathurst Island Complex.

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