|
Hells Canyon Wilderness (Oregon And Idaho)
The Hells Canyon Wilderness is a wilderness area in the western United States, in Idaho and Oregon. Created in 1975, the Wilderness is managed by both the U.S. Bureau of Land Management and the U.S. Forest Service and contains some of the most spectacular sections of the Snake River as it winds its way through Hells Canyon, North America's deepest river gorge and one of the deepest gorges on Earth. The Oregon Wilderness Act of 1984 added additional acreage and currently the area protects a total area of . It lies entirely within the Hells Canyon National Recreation Area except for a small plot in southeastern Wallowa County, Oregon which is administered by the Bureau of Land Management. The area that is administered by the Forest Service consists of portions of (in descending order of acreage) the Wallowa, Nez Perce, Payette, and Whitman National Forests. Topography The Oregon portion of Hells Canyon Wilderness is characterized by two steep breakland areas in excess of 60 per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Riggins, Idaho
Riggins is a city in the western United States in Idaho County, Idaho. Nestled deep in a canyon at the confluence of the Salmon and Little Salmon rivers in west central Idaho, it is approximately north of Boise, and south-southeast of Lewiston. The elevation is above sea level, and its population was 419 at the 2010 census. U.S. Route 95, the only highway for the state connecting the Panhandle to the south, runs through Riggins as Main Street. Along this route, Riggins is the most northwestern town in the Mountain time zone; Pacific time begins just north of the city, across the Salmon River. History Riggins was named for Richard L. Riggins, local businessman and postmaster, and for his father, Fred Riggins, who carried the mail to the area for years. A sawmill was formerly operated in Riggins, until an explosion and fire in 1982. Geography Riggins is located at (45.422125, -116.315848). According to the United States Census Bureau, the city has a total area of , ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hells Canyon National Recreation Area
Hells Canyon National Recreation Area is a United States national recreation area on the borders of the U.S. states of Oregon and Idaho. Managed by the U.S. Forest Service as part of the Wallowa-Whitman National Forest, the recreation area was established by Congress and signed by President Gerald Ford in late 1975 to protect the historic and archaeological values of the Hells Canyon area and the area of the Snake River between Hells Canyon Dam and the Oregon–Washington border. Roughly of the recreation area are designated the Hells Canyon Wilderness. There are nearly of hiking trails in the recreation area. The largest portion of the area lies in eastern Wallowa County, Oregon. Smaller portions lie in southwestern Idaho County, Idaho, northwestern Adams County, Idaho, and northeastern Baker County, Oregon. It was formally dedicated in 1976, in June in Idaho, and in late July in Oregon. Hells Canyon Archeological District All or partly included in the HCNRA is the Hells ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seven Devils Mountains
The Seven Devils Mountains are notable peaks in the western United States, located in west central Idaho in the Hells Canyon Wilderness. They are above the east bank of the Snake River, which forms the Idaho-Oregon border. The Seven Devils are part of the Rocky Mountains, and the tallest peaks are above the adjacent river, with few trees in between. There are several marked and unmarked trails and cleared camping areas throughout the mountains. It has several waterfalls and streams as well as numerous lakes. Immediately southwest of Riggins, the Seven Devils are accessible from U.S. Highway 95 by a gravel road which climbs over in . Ecology The Seven Devils contains a wide variety of wildlife such as bighorn sheep, mountain goat, mule deer, elk, black bear, cougar, cutthroat and rainbow trout The rainbow trout (''Oncorhynchus mykiss'') is a species of trout native to cold-water tributaries of the Pacific Ocean in Asia and North America. The steelhead (sometimes calle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lodgepole Pine
''Pinus contorta'', with the common names lodgepole pine and shore pine, and also known as twisted pine, and contorta pine, is a common tree in western North America. It is common near the ocean shore and in dry montane forests to the subalpine, but is rare in lowland rain forests. Like all pines (member species of the genus ''Pinus''), it is an evergreen conifer. Description Depending on subspecies, ''Pinus contorta'' grows as an evergreen shrub or tree. The shrub form is krummholz and is approximately high. The thin and narrow-crowned tree can grow high and achieve up to in diameter at chest height. The ''murrayana'' subspecies is the tallest. The crown is rounded and the top of the tree is flattened. In dense forests, the tree has a slim, conical crown. The formation of twin trees is common in some populations in British Columbia. The elastic branches stand upright or overhang and are difficult to break. The branches are covered with short shoots that are easy to remove. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Larch
Larches are deciduous conifers in the genus ''Larix'', of the family Pinaceae (subfamily Laricoideae). Growing from tall, they are native to much of the cooler temperate northern hemisphere, on lowlands in the north and high on mountains further south. Larches are among the dominant plants in the boreal forests of Siberia and Canada. Although they are conifers, larches are deciduous trees that lose their needles in the autumn. Etymology The English name Larch ultimately derives from the Latin "larigna," named after the ancient settlement of Larignum. The story of its naming was preserved by Vitruvius: It is worth while to know how this wood was discovered. The divine Caesar, being with his army in the neighbourhood of the Alps, and having ordered the towns to furnish supplies, the inhabitants of a fortified stronghold there, called Larignum, trusting in the natural strength of their defences, refused to obey his command. So the general ordered his forces to the assault. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacier
A glacier (; ) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its Ablation#Glaciology, ablation over many years, often Century, centuries. It acquires distinguishing features, such as Crevasse, crevasses and Serac, seracs, as it slowly flows and deforms under stresses induced by its weight. As it moves, it abrades rock and debris from its substrate to create landforms such as cirques, moraines, or fjords. Although a glacier may flow into a body of water, it forms only on land and is distinct from the much thinner sea ice and lake ice that form on the surface of bodies of water. On Earth, 99% of glacial ice is contained within vast ice sheets (also known as "continental glaciers") in the polar regions, but glaciers may be found in mountain ranges on every continent other than the Australian mainland, including Oceania's high-latitude oceanic island countries such as New Zealand. Between lati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subalpine
Montane ecosystems are found on the slopes of mountains. The alpine climate in these regions strongly affects the ecosystem because temperatures fall as elevation increases, causing the ecosystem to stratify. This stratification is a crucial factor in shaping plant community, biodiversity, metabolic processes and ecosystem dynamics for montane ecosystems. Dense montane forests are common at moderate elevations, due to moderate temperatures and high rainfall. At higher elevations, the climate is harsher, with lower temperatures and higher winds, preventing the growth of trees and causing the plant community to transition to montane grasslands, shrublands or alpine tundra. Due to the unique climate conditions of montane ecosystems, they contain increased numbers of endemic species. Montane ecosystems also exhibit variation in ecosystem services, which include carbon storage and water supply. Life zones As elevation increases, the climate becomes cooler, due to a decrease in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alpine Climate
Alpine climate is the typical weather (climate) for elevations above the tree line, where trees fail to grow due to cold. This climate is also referred to as a mountain climate or highland climate. Definition There are multiple definitions of alpine climate. In the Köppen climate classification, the alpine and mountain climates are part of group ''E'', along with the polar climate, where no month has a mean temperature higher than . According to the Holdridge life zone system, there are two mountain climates which prevent tree growth : a) the alpine climate, which occurs when the mean biotemperature of a location is between . The alpine climate in Holdridge system is roughly equivalent to the warmest tundra climates (ET) in the Köppen system. b) the alvar climate, the coldest mountain climate since the biotemperature is between 0 °C and 1.5 °C (biotemperature can never be below 0 °C). It corresponds more or less to the coldest tundra climates and to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Douglas Fir
The Douglas fir (''Pseudotsuga menziesii'') is an evergreen conifer species in the pine family, Pinaceae. It is native to western North America and is also known as Douglas-fir, Douglas spruce, Oregon pine, and Columbian pine. There are three varieties: coast Douglas-fir (''P. menziesii'' var. ''menziesii''), Rocky Mountain Douglas-fir (''P. menziesii'' var. ''glauca'') and Mexican Douglas-fir (''P. menziesii'' var. ''lindleyana''). Despite its common names, it is not a true fir (genus ''Abies''), spruce (genus '' Picea''), or pine (genus ''Pinus''). It is also not a hemlock; the genus name ''Pseudotsuga'' means "false hemlock". Description Douglas-firs are medium-size to extremely large evergreen trees, tall (although only ''Pseudotsuga menziesii var. menziesii'', common name coast Douglas-firs, reach heights near 100 m) and commonly reach in diameter, although trees with diameters of almost exist. The largest coast Douglas-firs regularly live over 500 years, with the old ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ponderosa Pine
''Pinus ponderosa'', commonly known as the ponderosa pine, bull pine, blackjack pine, western yellow-pine, or filipinus pine is a very large pine tree species of variable habitat native to mountainous regions of western North America. It is the most widely distributed pine species in North America.Safford, H.D. 2013. Natural Range of Variation (NRV) for yellow pine and mixed conifer forests in the bioregional assessment area, including the Sierra Nevada, southern Cascades, and Modoc and Inyo National Forests. Unpublished report. USDA Forest Service, Pacific Southwest Region, Vallejo, CA/ref> ''Pinus ponderosa'' grows in various erect forms from British Columbia southward and eastward through 16 western U.S. states and has been successfully introduced in temperate regions of Europe, and in New Zealand. It was first documented in modern science in 1826 in eastern Washington near present-day Spokane (of which it is the official city tree). On that occasion, David Douglas misidenti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bunchgrasses
Tussock grasses or bunch grasses are a group of grass species in the family Poaceae. They usually grow as singular plants in clumps, tufts, hummocks, or bunches, rather than forming a sod or lawn, in meadows, grasslands, and prairies. As perennial plants, most species live more than one season. Tussock grasses are often found as forage in pastures and ornamental grasses in gardens. Many species have long roots that may reach or more into the soil, which can aid slope stabilization, erosion control, and soil porosity for precipitation absorption. Also, their roots can reach moisture more deeply than other grasses and annual plants during seasonal or climatic droughts. The plants provide habitat and food for insects (including Lepidoptera), birds, small animals and larger herbivores, and support beneficial soil mycorrhiza. The leaves supply material, such as for basket weaving, for indigenous peoples and contemporary artists. Tussock and bunch grasses occur in almost any hab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whitman National Forest
Whitman National Forest was established in Oregon on July 1, 1908 with from part of Blue Mountains National Forest. On June 20, 1920 part of Minam National Forest was added. In 1954 it was administratively combined with Wallowa National Forest to make Wallowa–Whitman National Forest. In descending order of forest land area, Whitman National Forest is located in parts of Baker, Union, Grant, Wallowa, Umatilla, and Malheur counties. There are local ranger district offices in Baker City, Halfway, and Unity. Its administrative headquarters are in Baker City, as part of the Wallowa-Whitman National Forest. As of September 30, 2008, Whitman had an area of , representing 55.96% of the combined forest's . References External linksForest History Society [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
