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Gehringia
''Gehringia olympica'' is a species of ground beetles (family Carabidae), the only species in the genus ''Gehringia''. It is a rather unusual member of its family, a tiny shiny-black beetle with a few stout bristles, and is not found anywhere outside the Pacific Northwest of North America, from Montana and Oregon in the United States northwards to the North West Territories and Yukon in Canada. It inhabits mountain stream gravel banks and can locally be very common. The relationships of this distinct montane endemic have been long debated; variously, it was assigned to subfamily Psydrinae or Trechinae Trechinae is a subfamily in the ground beetle family, Carabidae. Genera The subfamily includes the following genera: * '' Accoella'' Uéno, 1990 * '' Acheroniotes'' Lohai & Lakota, 2010 * '' Adriaphaenops'' Noesske, 1928 * '' Aepiblemus'' Bel ... and here it is treated in the former. References External Links ToLweb: ''Gehringia olympica'' Psydrinae Monotypic Carabi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gehringia Olympica
''Gehringia olympica'' is a species of ground beetles (family Carabidae), the only species in the genus ''Gehringia''. It is a rather unusual member of its family, a tiny shiny-black beetle with a few stout bristles, and is not found anywhere outside the Pacific Northwest of North America, from Montana and Oregon in the United States northwards to the North West Territories and Yukon in Canada. It inhabits mountain stream gravel banks and can locally be very common. The relationships of this distinct montane endemic have been long debated; variously, it was assigned to subfamily Psydrinae or Trechinae Trechinae is a subfamily in the ground beetle family, Carabidae. Genera The subfamily includes the following genera: * '' Accoella'' Uéno, 1990 * '' Acheroniotes'' Lohai & Lakota, 2010 * '' Adriaphaenops'' Noesske, 1928 * '' Aepiblemus'' Belo ... and here it is treated in the former. References External Links ToLweb: ''Gehringia olympica'' Psydrinae Monotypic Carabid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Psydrinae
Psydrinae is a subfamily of beetles in the family Carabidae. Genera The subfamily contains the following genera: * '' Amblytelus'' Erichson, 1842 * '' Bembidiomorphum'' Champion, 1918 * '' Celanida'' Castelnau, 1867 * '' Dystrichothorax'' Blackburn, 1892 * ''Epelyx'' Blackburn, 1892 * ''Gehringia'' Darlington, 1933 * ''Helenaea'' Schatzmayr & Koch, 1934 * '' Laccocenus'' Sloane, 1890 * ''Mecyclothorax'' Sharp, 1903 * '' Melisodera'' Westwood, 1835 * '' Meonis'' Castelnau, 1867 * '' Meonochilus'' Liebherr & Marris, 2009 * '' Molopsida'' White, 1846 * '' Moriodema'' Castelnau, 1867 * '' Moriomorpha'' Castelnau, 1867 * ''Neonomius'' Moore, 1963 * '' Nomius'' Laporte, 1835 * '' Paratrichothorax'' Baehr, 2004 * '' Pseudamblytelus'' Baehr, 2004 * ''Psydrus'' LeConte, 1846 * ''Pterogmus'' Sloane, 1920 * ''Raphetis'' Moore, 1963 * ''Rhaebolestes'' Sloane, 1903 * ''Rossjoycea'' Liebherr, 2011 * ''Selenochilus'' Chaudoir, 1878 * ''Sitaphe'' Moore, 1963 * ''Teraphis'' Castelnau, 1867 * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oregon
Oregon () is a U.S. state, state in the Pacific Northwest region of the Western United States. The Columbia River delineates much of Oregon's northern boundary with Washington (state), Washington, while the Snake River delineates much of its eastern boundary with Idaho. The 42nd parallel north, 42° north parallel delineates the southern boundary with California and Nevada. Oregon has been home to many Indigenous peoples of the Americas, indigenous nations for thousands of years. The first European traders, explorers, and settlers began exploring what is now Oregon's Pacific coast in the early-mid 16th century. As early as 1564, the Spanish expeditions to the Pacific Northwest, Spanish began sending vessels northeast from the Philippines, riding the Kuroshio Current in a sweeping circular route across the northern part of the Pacific. In 1592, Juan de Fuca undertook detailed mapping and studies of ocean currents in the Pacific Northwest, including the Oregon coast as well as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subfamily
In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end subfamily botanical names with "-oideae", and zoological names with "-inae". See also * International Code of Nomenclature for algae, fungi, and plants * International Code of Zoological Nomenclature * Rank (botany) * Rank (zoology) In biological classification, taxonomic rank is the relative level of a group of organisms (a taxon) in an ancestral or hereditary hierarchy. A common system consists of species, genus, family, order, class, phylum, kingdom, domain. While ... Sources {{biology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montane
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 a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gravel Bank
A bar in a river is an elevated region of sediment (such as sand or gravel) that has been deposition (geology), deposited by the flow. Types of bars include mid-channel bars (also called braid bars and common in braided rivers), point bars (common in Meander, meandering rivers), and mouth bars (common in river deltas). The locations of bars are determined by the geometry of the river and the flow through it. Bars reflect sediment supply conditions, and can show where sediment supply rate is greater than the transport capacity. A mid-channel bar, is also often referred to as a braid bar because they are often found in braided river channels. Braided river channels are broad and shallow and found in areas where sediment is easily Erosion, eroded like at a Outwash plain, glacial outwash, or at a mountain front with high sediment loads. These types of river systems are associated with high slope, sediment supply, stream power, shear stress, and bed load transport rates. Braided ri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canada
Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by total area. Its southern and western border with the United States, stretching , is the world's longest binational land border. Canada's capital is Ottawa, and its three largest metropolitan areas are Toronto, Montreal, and Vancouver. Indigenous peoples have continuously inhabited what is now Canada for thousands of years. Beginning in the 16th century, British and French expeditions explored and later settled along the Atlantic coast. As a consequence of various armed conflicts, France ceded nearly all of its colonies in North America in 1763. In 1867, with the union of three British North American colonies through Confederation, Canada was formed as a federal dominion of four provinces. This began an accretion of provinces an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yukon
Yukon (; ; formerly called Yukon Territory and also referred to as the Yukon) is the smallest and westernmost of Canada's three territories. It also is the second-least populated province or territory in Canada, with a population of 43,964 as of March 2022. Whitehorse, the territorial capital, is the largest settlement in any of the three territories. Yukon was split from the North-West Territories in 1898 as the Yukon Territory. The federal government's ''Yukon Act'', which received royal assent on March 27, 2002, established Yukon as the territory's official name, though ''Yukon Territory'' is also still popular in usage and Canada Post continues to use the territory's internationally approved postal abbreviation of ''YT''. In 2021, territorial government policy was changed so that “''The'' Yukon” would be recommended for use in official territorial government materials. Though officially bilingual (English and French), the Yukon government also recognizes First Natio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North West Territories
The Northwest Territories (abbreviated ''NT'' or ''NWT''; french: Territoires du Nord-Ouest, formerly ''North-Western Territory'' and ''North-West Territories'' and namely shortened as ''Northwest Territory'') is a federal territory of Canada. At a land area of approximately and a 2016 census population of 41,790, it is the second-largest and the most populous of the three territories in Northern Canada. Its estimated population as of 2022 is 45,605. Yellowknife is the capital, most populous community, and only city in the territory; its population was 19,569 as of the 2016 census. It became the territorial capital in 1967, following recommendations by the Carrothers Commission. The Northwest Territories, a portion of the old North-Western Territory, entered the Canadian Confederation on July 15, 1870. Since then, the territory has been divided four times to create new provinces and territories or enlarge existing ones. Its current borders date from April 1, 1999, when the te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Northwest
The Pacific Northwest (sometimes Cascadia, or simply abbreviated as PNW) is a geographic region in western North America bounded by its coastal waters of the Pacific Ocean to the west and, loosely, by the Rocky Mountains to the east. Though no official boundary exists, the most common conception includes the U.S. states of Oregon, Washington (state), Washington, and Idaho, and the Canadian province of British Columbia. Some broader conceptions reach north into Alaska and Yukon, south into northern California, and east into western Montana. Other conceptions may be limited to the coastal areas west of the Cascade Mountains, Cascade and Coast Mountains, Coast mountains. The variety of definitions can be attributed to partially overlapping commonalities of the region's history, culture, geography, society, ecosystems, and other factors. The Northwest Coast is the coastal region of the Pacific Northwest, and the Northwest Plateau (also commonly known as "British Columbia Interi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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