- Mammals of the Pacific Northwest: From the Coast to the High Cascades
- Mammals of the Pacific Northwest : from the coast to the high Cascades / Chris Maser
- Mammals of the Pacific Northwest: From the Coast to the High Cascades by Chris Maser
- List of mammals of Oregon
Mammals of the Pacific Northwest: From the Coast to the High Cascades
At these higher altitudes and much colder average temperatures, the tailed frog tadpoles may take three to four years to completely metamorphose into the adult stage. The tadpoles are superbly adapted for life in swift water. Its mouth parts form a sucker like disk enabling them to cling to rock surfaces while foraging for algae. They can even climb vertical rock faces in this manner under swift water. The majority of amphibians prefer the vastly different habitat of ponds, lakes and wetlands.
Mammals of the Pacific Northwest : from the coast to the high Cascades / Chris Maser
The western toad, Northwestern salamander, long-toed salamander, rough-skinned newt and Pacific treefrog are a few of the species that breed in these fertile habitats. Most spend the early part of their lives almost entirely in the water until they are fully developed and capable of migrating to land.
The Ensatina, however, is a small delicate terrestrial breeding salamander that lays its eggs in moist holes in the ground at lower elevations.
The Ensatina has a constriction at the base of its tail, which allows the tail to break off if it gets attacked. The detached tail wiggles violently to distract the predator letting the tailless salamander to escape and live to regenerate another tail.
Mammals of the Pacific Northwest: From the Coast to the High Cascades by Chris Maser
Fish Perhaps the best known icon of the Pacific Northwest is the salmon. The Skagit River Watershed is the only watershed in the US to have runs of all Pacific salmon species: chinook king , coho, chum, pink and sockeye. Every autumn between August and December, thousands of salmon work their way up the Skagit River, struggling against the current and leaping high out of the cascading whitewater to reach their spawning beds.
The spectacle not only draws curious tourists but also hundreds of bald eagles that come to feed on the salmon and their spawned-out corpses. While thousands of fish return each year, many salmon runs have been in decline for many years as a result of logging, dams, over-harvesting, cross-breeding with genetically inferior hatchery fish and a variety of other factors.
Puget Sound Chinook salmon was listed as a threatened species in The Coastal Puget Sound bull trout char , a distinct population segment of bull trout, was also listed as threatened in and the Baker River sockeye, the only native "lake-type" sockeye in the Puget Sound, may be threatened.
The other varieties of trout found in the waters of the North Cascades include steelhead sea-run rainbow , resident rainbow, sea-run cutthroat and resident cutthroat, all of which are evolutionary relatives of salmon known as salmonids. Insects More often a source of revulsion, fear and annoyance than respect and gratitude, these many-legged, miniscule creatures are a vital part of the North Cascades ecosystem. Their creeping and crawling actually helps till the soil, break down nutrients and transport seeds. Being low on the food chain, insects are an important food source for many of the more familiar and well-liked animals.
List of mammals of Oregon
Insects considered by many to be pests, such as mosquitoes, are actually kept in check by the more reviled spiders. In fact, while many of these creatures are considered nuisances, they are not only beneficial to the park environment, but are absolutely essential. Aquatic insects, known as macroinvertebrates, are important food sources for the many species of fish that dwell in the rivers and lakes of the park, but are also important as indicators of water quality and habitat condition.
Macroinvertebrates live in the water year-round and serve biologists as a sort of barometer of stream health as they are especially sensitive to environmental change and degradation. By studying these small creatures, park biologists are able to identify changes in water habitat not readily apparent through other methods. From beetles to caterpillars to naiads and everything in between, these creatures may be small of stature but they are of great importance. Its exceptionally Big Beaver Trail. Bridge Creek Pacific Crest Trail.
Day Hiking. Desolation Peak Trail. East Bank Trail. Flat Creek Trail. Goode Ridge Trail. Hidden Lake Trail.
North Cascades NPS info. McAlester Lake Trail. McGregor Mountain Trail. Monogram Lake Trail. Newhalem Area Trails.
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Old Wagon Pacific Crest Trail. Purple Creek Trail. Pyramid Lake Trail.
Rainbow Creek Trail. Rainbow Lake Trail. Sourdough Mountain Trail. Stetattle Creek Trail. Thornton Lake Trail. Thunder Creek and Park Creek Trails. Twisp Pass Dagger Lake Trail. Rising above a scene rich with extraordinary wildlife, pristine lakes, and alpine terrain, the Teton Range stands monument to the people who fought to protect it. These are mountains of the imagination. Mountains that led to the creation of Grand Teton National Park where you can explore over two hundred miles of trails, float the Snake River or enjoy the serenity of this remarkable place.
American Pika. The pika is a close relative of the rabbits and hares, with two upper incisors on each side of the jaw, one behind the other. Being rock-gray in color, pikas are seldom seen until their shrill, metallic call reveals their presence. Arches National Park. Bryce Canyon National Park. Canyonlands National Park. Death Valley National Park. The region forms part of the Cascade Range, named for its innumerable waterfalls. The range extends from British Columbia to northern California. A geological theory proposes that the mountains began as a micro-continent several hundred miles out in the Pacific Ocean.
Over the eons a series of islands floated on their plate toward North America. About a hundred million years ago, the plate smashed into the North American continent, folding and crumpling into a mountain range as it lodged against the landmass. Those mountains eroded; the Cascades you see today rose only five or six million years ago. The western part of the park differs markedly from the east.
It hits the western slopes and rises, condensing to rain and snow. Western red cedars, hemlocks, and Douglas firs luxuriate on slopes that receive inches of precipitation a year. When the winds reach the east, they are mostly wrung dry: Only 35 inches of precipitation fall in Stehekin at the head of Lake Chelan. Arid-dwelling sagebrush and ponderosa pine grow in the peaks' rain shadow. In , Canadian author Jack Kerouac found solace and inspiration for two novels in a cabin on Desolation Peak, where he worked for the Park Service as a fire spotter for 63 days.
go In The Dharma Bums, he writes, "I went out in my alpine yard and there it was