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Salix Alaxensis
''Salix alaxensis'' is a species of flowering plant in the willow family known by the common names Alaska willow and feltleaf willow. It is native to northern North America, where it occurs throughout Alaska and northwestern Canada.Uchytil, Ronald J. 1991''Salix alaxensis''.In: Fire Effects Information System, nline U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory. Description This plant is a shrub or tree up to tall. The stem diameter is up to . In harsher climates, it remains much smaller. The smooth, gray bark becomes furrowed and scaly with age. The leaves are up to 11 cm long and have woolly undersides. and eating up to 90% of the twigs on the plant. In some areas of northern Alaska, this plant provides 95% of the winter food for moose. Snowshoe hares also prefer it. In northern Alaska, this may be the only source of fuel wood. It is one of the tallest willows in the Canadian Arctic Archipelago. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salicaceae
The Salicaceae is the willow family of flowering plants. The traditional family (Salicaceae ''sensu stricto'') included the willows, poplar, aspen, and cottonwoods. Genetic studies summarized by the Angiosperm Phylogeny Group (APG) have greatly expanded the circumscription of the family to contain 56 genera and about 1220 species, including the Scyphostegiaceae and many of the former Flacourtiaceae. In the Cronquist system, the Salicaceae were assigned to their own order, Salicales, and contained three genera (''willow, Salix'', ''Populus'', and ''Chosenia''). Recognized to be closely related to the Violaceae and Passifloraceae, the family is placed by the APG in the order Malpighiales. Under the new circumscription, all members of the family are trees or shrubs that have Simple leaf, simple leaves with Phyllotaxis, alternate arrangement and temperate members are usually deciduous. Most members have serrate or dentate leaf margins, and those that have such toothed margins all e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canadian Arctic Archipelago
The Arctic Archipelago, also known as the Canadian Arctic Archipelago, is an archipelago lying to the north of the Canadian continental mainland, excluding Greenland (an autonomous territory of Denmark). Situated in the northern extremity of North America and covering about , this group of 36,563 islands, surrounded by the Arctic Ocean, comprises much of Northern Canada, predominately Nunavut and the Northwest Territories. The archipelago is showing some effects of climate change, with some computer estimates determining that melting there will contribute to the rise in sea levels by 2100. History Around 2500 BCE, the first humans, the Paleo-Eskimos, arrived in the archipelago from the Canadian mainland. Between 1000–1500 CE, they were replaced by the Thule people, who are the ancestors of today's Inuit. British claims on the islands, the British Arctic Territories, were based on the explorations in the 1570s by Martin Frobisher. Canadian sovereignty was originally (1870â ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cultivar
A cultivar is a type of cultivated plant that people have selected for desired traits and when propagated retain those traits. Methods used to propagate cultivars include: division, root and stem cuttings, offsets, grafting, tissue culture, or carefully controlled seed production. Most cultivars arise from purposeful human manipulation, but some originate from wild plants that have distinctive characteristics. Cultivar names are chosen according to rules of the International Code of Nomenclature for Cultivated Plants (ICNCP), and not all cultivated plants qualify as cultivars. Horticulturists generally believe the word ''cultivar''''Cultivar'' () has two meanings, as explained in ''Formal definition'': it is a classification category and a taxonomic unit within the category. When referring to a taxon, the word does not apply to an individual plant but to all plants that share the unique characteristics that define the cultivar. was coined as a term meaning "cultivated variety ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Native Americans In The United States
Native Americans, also known as American Indians, First Americans, Indigenous Americans, and other terms, are the Indigenous peoples of the mainland United States ( Indigenous peoples of Hawaii, Alaska and territories of the United States are generally known by other terms). There are 574 federally recognized tribes living within the US, about half of which are associated with Indian reservations. As defined by the United States Census, "Native Americans" are Indigenous tribes that are originally from the contiguous United States, along with Alaska Natives. Indigenous peoples of the United States who are not listed as American Indian or Alaska Native include Native Hawaiians, Samoan Americans, and the Chamorro people. The US Census groups these peoples as " Native Hawaiian and other Pacific Islanders". European colonization of the Americas, which began in 1492, resulted in a precipitous decline in Native American population because of new diseases, wars, ethni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecological Succession
Ecological succession is the process of change in the species structure of an ecological community over time. The time scale can be decades (for example, after a wildfire) or more or less. Bacteria allows for the cycling of nutrients such as carbon, nitrogen and sulphur. The community begins with relatively few pioneering plants and animals and develops through increasing complexity until it becomes stable or self-perpetuating as a climax community. The "engine" of succession, the cause of ecosystem change, is the impact of established organisms upon their own environments. A consequence of living is the sometimes subtle and sometimes overt alteration of one's own environment. Succession is a process by which an ecological community undergoes more or less orderly and predictable changes following a disturbance or the initial colonization of a new habitat. Succession may be initiated either by formation of new, unoccupied habitat, such as from a lava flow or a severe lan ... [...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] |
Salix Hastata
''Salix hastata'' is a species of flowering plant in the willow family, known by the common name halberd willow. It has an almost circumpolar distribution,''Salix hastata''. The Nature Conservancy. occurring throughout the northern s of the Northern Hemisphere, most frequently found near the coast of the Arctic Ocean.Esser, Lora L. 1992 ''Salix hastata''. In: Fire Effects Information System, nline U.S. Department of Agriculture, Forest Service, R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salix Brachycarpa
''Salix brachycarpa'' is a species of flowering plant in the willow family known by the common names barren-ground willow,Coladonato, Milo. 199''Salix brachycarpa''.In: Fire Effects Information System, nline U.S. Department of Agriculture (USDA), Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory. small-fruit willow''Salix brachycarpa''. '' Flora of North America''. and shortfruit willow. Distribution The plant is native to North America, where it occurs throughout |
Salix Lasiandra
''Salix lucida'', the shining willow, Pacific willow, red willow, or whiplash willow, is a species of willow native to northern and western North America, occurring in wetland habitats.Jepson Flora''Salix lucida''/ref>Plants of British Columbia''Salix lucida''/ref> It is the largest willow found in British Columbia. It is a deciduous large shrub or small tree growing to tall. The shoots are greenish-brown to grey-brown. The leaves are narrow elliptic to lanceolate, long and broad, glossy dark green above, usually glaucous green below, hairless or thinly hairy. The flowers are yellow catkins long, produced in late spring after the leaves emerge.Northern Prairie Wildlife Research Center''Salix lucida'' The subspecies are: *''S. l. lucida''shining willow, Newfoundland west to eastern Saskatchewan, and south to Maryland and South Dakota *''S. l. lasiandra'' (Benth.) E.Murray (syn. ''S. lasiandra'' Benth.)Pacific willow, Alaska east to Northwest Territory, and south to Cali ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salix Sitchensis
''Salix sitchensis'' is a species of willow known by the common name Sitka willow. It is native to northwestern North America from Alaska to northern California to Montana. It is a common to abundant plant in many types of coastal and inland wetland habitat, such as marshes, riverbanks, swamps, coastal sand dunes, and mountain springs. Description ''Salix sitchensis'' is variable in appearance, taking the form of a bushy shrub or an erect tree up to tall. The leaves are up to 12 cm long, lance-shaped or oval with pointed tips, smooth-edged or toothed, often with the edges rolled under. The undersides are hairy to woolly in texture, and the upper surfaces are mostly hairless and dark green. The inflorescence is a catkin A catkin or ament is a slim, cylindrical flower cluster (a spike), with inconspicuous or no petals, usually wind-pollinated (anemophilous) but sometimes insect-pollinated (as in ''Salix''). They contain many, usually unisexual flowers, arranged cl ... of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salix Glauca
''Salix glauca'' is a species of flowering plant in the willow family known by the common names gray willow, grayleaf willow, white willow, and glaucous willow. It is native to North America, where it occurs throughout much of Alaska, northern and western Canada, and the contiguous United States south through the Rocky Mountains to northern New Mexico.Uchytil, Ronald J. 1992''Salix glauca''.In: Fire Effects Information System, nline U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory. It can also be found in Greenland, northwestern Europe, and Siberia. Description This willow is usually a shrub growing up to tall, but in appropriate habitat it becomes a tree up to tall. The smooth gray bark becomes furrowed with age. The species is dioecious, with male and female reproductive parts occurring on separate individuals. This species has secondary sexual dimorphism, with male and female individuals different in function or mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salix Bebbiana
''Salix bebbiana'' is a species of willow indigenous to Canada and the northern United States, from Alaska and Yukon south to California and Arizona and northeast to Newfoundland and New England. Common names include beaked willow, long-beaked willow, gray willow, and Bebb's willow. This species is also called red willow by Native Americans according to ThArctic Prairies'' Appendix E by Ernest Tompson Seton. This plant is typically a large, fast-growing, multiple-stemmed shrub or small, shrubby tree capable of forming dense, colonial thickets. It can be found in loose, saturated soils such as that on riverbanks, lakesides, swamps, marshes, and bogs. It is capable of tolerating heavy clay and rocky soils, making it highly adaptable and durable. It is a dominant species in many marshland areas in its native range. Leaves are alternately arranged, simple, and ovate in shape, widest near the midrib and narrowing to a tapering base and pointed tip. The leaf edges are generally en ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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