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Physella Johnsoni
The Banff Springs snail (''Physella johnsoni'') is a species of small air-breathing freshwater snail in the family Physidae. Based on molecular research, it appears that ''Physella johnsoni'' separated out as a species from '' Physella gyrina'' about 10,000 years ago. Description, habitat and distribution These aquatic pulmonate gastropod mollusks are approximately the size of unpopped corn kernels. The largest ones are only about one centimetre long, and like all of the Physidae, the shells are sinistral or coiled left-handed. The snails' diet consists of periphyton. The Banff Springs snail was first identified in 1926 in the nine sulphurous hot springs of Sulphur Mountain in Banff National Park, Alberta, Canada, and has been found nowhere else. It is very unusual because it is adapted to life in thermal springs where the water is low in oxygen and high in hydrogen sulfide, an environment too harsh for most animals to survive in. Since its discovery, its range has shrunk to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William J
William is a masculine given name of Germanic origin. It became popular in England after the Norman conquest in 1066,All Things William"Meaning & Origin of the Name"/ref> and remained so throughout the Middle Ages and into the modern era. It is sometimes abbreviated "Wm." Shortened familiar versions in English include Will or Wil, Wills, Willy, Willie, Bill, Billie, and Billy. A common Irish form is Liam. Scottish diminutives include Wull, Willie or Wullie (as in Oor Wullie). Female forms include Willa, Willemina, Wilma and Wilhelmina. Etymology William is related to the German given name ''Wilhelm''. Both ultimately descend from Proto-Germanic ''*Wiljahelmaz'', with a direct cognate also in the Old Norse name ''Vilhjalmr'' and a West Germanic borrowing into Medieval Latin ''Willelmus''. The Proto-Germanic name is a compound of *''wiljô'' "will, wish, desire" and *''helmaz'' "helm, helmet".Hanks, Hardcastle and Hodges, ''Oxford Dictionary of First Names'', Oxf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxygen
Oxygen is a chemical element; it has chemical symbol, symbol O and atomic number 8. It is a member of the chalcogen group (periodic table), group in the periodic table, a highly reactivity (chemistry), reactive nonmetal (chemistry), nonmetal, and a potent oxidizing agent that readily forms oxides with most elements as well as with other chemical compound, compounds. Oxygen is abundance of elements in Earth's crust, the most abundant element in Earth's crust, making up almost half of the Earth's crust in the form of various oxides such as water, carbon dioxide, iron oxides and silicates.Atkins, P.; Jones, L.; Laverman, L. (2016).''Chemical Principles'', 7th edition. Freeman. It is abundance of chemical elements, the third-most abundant element in the universe after hydrogen and helium. At standard temperature and pressure, two oxygen atoms will chemical bond, bind covalent bond, covalently to form dioxygen, a colorless and odorless diatomic gas with the chemical formula ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Fauna Of Alberta
Endemism is the state of a species being found only 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 also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or becoming ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Fauna Of Canada
Endemism is the state of a species being found only 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 also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or becomin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molluscs Of Canada
Mollusca is a phylum of protostome, protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant taxon, extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The number of additional fossil species is estimated between 60,000 and 100,000, and the proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine biology, marine phylum, comprising about 23% of all the named marine organisms. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat, as numerous groups are freshwater mollusc, freshwater and even terrestrial molluscs, terrestrial species. The phylum is typically divided into 7 or 8 taxonomy (biology), taxonomic class (biology), classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurobiology, neurologi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Animals Of North America
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. The term excludes seawater and brackish water, but it does include non-salty mineral-rich waters, such as chalybeate springs. Fresh water may encompass frozen and meltwater in ice sheets, ice caps, glaciers, snowfields and icebergs, natural precipitations such as rainfall, snowfall, hail/ sleet and graupel, and surface runoffs that form inland bodies of water such as wetlands, ponds, lakes, rivers, streams, as well as groundwater contained in aquifers, subterranean rivers and lakes. Water is critical to the survival of all living organisms. Many organisms can thrive on salt water, but the great majority of vascular plants and most insects, amphibians, reptiles, mammals and birds need fresh water to survive. Fresh water is the water resource that is of the most and immediate use to humans. Fresh water is not alway ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banff Longnose Dace
The Banff longnose dace (''Rhinichthys cataractae smithi'') was a diminutive subspecies of the longnose dace. Its endemic range was restricted to a small marsh fed by two hot springs at Cave and Basin National Historic Site on Sulphur Mountain in Banff National Park in Banff, Alberta, Canada. Taxonomy A study conducted by Claude B. Renaud and Don E. McAllister of the National Museum of Natural Sciences (now the Canadian Museum of Nature) in Ottawa, and published in 1988, concluded that the Banff longnose dace was a distinct subspecies. Banff longnose dace may have been more closely related to the eastern longnose dace than the westslope longnose dace, based on factors like modal vertebrae counts and lateral line scale count. Evolution Minimally the subspecies may have evolved postglacially from populations that survived glaciation in Southern Alberta or Montana in the upper Missouri drainage basin, and be younger than 9500 BP. Maximally it may have survived the Wisconsin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banff Upper Hot Springs
Banff Upper Hot Springs are commercially developed hot springs located in Banff National Park in Alberta, Canada, near the Banff townsite. Europeans first became aware of the springs in 1883. As it has been developed since, the hot pool is outdoors and while in the pool, visitors can look across the valley to Mount Rundle. It is located at of elevation, which makes it the highest hot spring in Canada. The Upper Hot Springs are one of nine naturally occurring hot springs in the Banff area. The hot spring water flows naturally through a big crack in the rock called the Sulphur Mountain Thrust Fault. The source of the water is located at higher elevations on either Sulphur Mountain or Mount Rundle. The springs are created by water passing through cracks in the mountain from Mount Rundle and Sulphur Mountain. As the water flows down the mountain it picks up heat and minerals. The flow rates fluctuates seasonally depending on when the snow melts. In the spring the water flows at o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cave And Basin National Historic Site
The Cave and Basin National Historic Site of Canada is located in the town of Banff, Alberta, within the Canadian Rocky Mountains, at the site of natural thermal mineral springs around which Canada's first national park, Banff National Park, was established. Geology and setting The Cave and Basin is the lowest component of nine sulphurous hot springs clustered in three groups on the northeast flank of Sulphur Mountain. All are located along the Sulphur Mountain Thrust Fault below Devonian limestones. The water is heated geothermally from an estimated depth of three kilometres. The Cave and Basin is the only cavern large enough to comfortably accommodate groups of people. History Human habitation in this area can be traced back to 10,700 years BC with the retreat of the last great glaciation. The Cave and Basin is a special place with important and longstanding cultural significance to many Indigenous Peoples. The first written recorded reference to hot springs here is by J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parks Canada
Parks Canada ()Parks Canada is the applied title under the Federal Identity Program; the legal title is Parks Canada Agency (). is the agency of the Government of Canada which manages the country's 37 National Parks, three National Marine Conservation Areas, 172 National Historic Sites, one National Urban Park ( Rouge), and one National Landmark ( Pingo). It also manages 11 proposed national park areas (National Park Reserves). Parks Canada is mandated to "protect and present nationally significant examples of Canada's natural and cultural heritage, and foster public understanding, appreciation, and enjoyment in ways that ensure their ecological and commemorative integrity for present and future generations". The agency also administers lands and waters set aside as potential national parklands, including ten National Park Reserves and one National Marine Conservation Area Reserve. More than of lands and waters in national parks and national marine conservation areas ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Wildlife Species At Risk
As of November 2024, the List of Wildlife Species at Risk has more than 600 entries for Canadian wildlife species considered at varying risks of extinction, including 301 classified as endangered species, 147 threatened species, 200 special concern, and 23 extirpated (no longer existing in the wild in Canada, but exists elsewhere). About 65 percent of Canada's resident species are considered "Secure". More than 30 wildlife species have become extinct in the wild since the arrival of European settlers. The Government of Canada maintains a list of all plant and animal species, or designatable units (DUs) thereof, federally recognized as special concern, threatened, endangered, extirpated, and extinct in Canada under Schedule I of the Species at Risk Act (SARA). SARA Schedule Species listed on SARA Schedule I receive federal legal protections under the act, including the protection of individuals, populations, and their habitat from harm. Listing on Schedule I of the act also ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species At Risk Act
The ''Species at Risk Act'' (, SARA) is a piece of Canadian federal legislation which became law in Canada on December 12, 2002. It is designed to meet one of Canada's key commitments under the International Convention on Biological Diversity. The goal of the ''Act'' is to prevent wildlife species in Canada from disappearing by protecting endangered or threatened organisms and their habitats. It also manages species which are not yet threatened, but whose existence or habitat is in jeopardy. SARA defines a method to determine the steps that need to be taken in order to help protect existing relatively healthy environments, as well as recover threatened habitats, although timing and implementation of recovery plans have limitations. It identifies ways in which governments, organizations, and individuals can work together to preserve species at risk and establishes penalties for failure to obey the law. The ''Act'' designates COSEWIC, an independent committee of wildlife experts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
