Pallid sturgeon [SEP] IUCN conservation status
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Pallid sturgeon


the pallid is noticeably paler. The scientific name for the fish is derived from "Scaphirhynchus", a Greek word meaning "spade snout" and "albus" which is Latin for "white". To better protect the pallid sturgeon from extinction, research on its DNA and that of other closely related species was conducted to assess the differences within various populations of pallid sturgeon, and the differences between pallid and shovelnose sturgeon. Early DNA research indicated that pallid sturgeon and shovelnose sturgeon were a single species. However, a 2000
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Pallid sturgeon


. Fish is a more important dietary staple for pallid sturgeon than it is for shovelnose sturgeon. In one study comparing dietary tendencies between adult shovelnose sturgeon and immature pallid sturgeon, the pallid sturgeon was found to consume far greater numbers of small fish such as cyprinids (minnows). In another study conducted in the upper Missouri River region, an examination of the stomach contents of hatchery-reared pallid sturgeon showed that 82% of the wet weight was small fish and the balance was mosquito-like insects, mayflies, and caddis
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Pallid sturgeon


For several decades, no natural reproduction of pallid sturgeon was observed, since all the fish that had been captured were older specimens. In the late 1990s, young pallid sturgeon were discovered living in a restored riparian area of the lower Missouri River. This was the first documented example of wild spawned pallid sturgeon in 50 years. In 2007, two female pallid sturgeon were also reported to have spawned in the Missouri National Recreational River area located downstream from Gavins Point Dam on the Missouri River. The pallid sturgeon's historical range spanned
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Angling records of Europe


This list is of the heaviest European freshwater fish caught using the traditional angling method of rod and line. Angling records in the UK Note 1 - European Eel (Anguilla anguilla) and European Sturgeon (Acipenser sturio) are listed as Critically Endangered species (IUCN) status by the International Union for Conservation of Nature (IUCN). Any of these fish caught, must be photographed, then returned to the water immediately. Note 2 - Siberian Sturgeon "(Acipenser baerii)" and Huchen (Danube salmon) "(hucho
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Pallid sturgeon


river currents more often than do shovelnose sturgeon. In a study based in Montana and North Dakota conducted on both the pallid and shovelnose sturgeon, both species were fitted with radio transmitters so researchers could track their swimming habits. Pallid sturgeon were found to prefer wider river channels, midchannel sandbars, and numerous islands, and were most commonly recorded in water depths between . The study also showed that the pallid sturgeon moved as much as per day and up to . Pallid sturgeon are believed to have preferred the muddy and generally warmer waters
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Pallid sturgeon


species is ancient and has remained virtually unchanged for 70 million years, since the Cretaceous period. The pallid sturgeon has a distinctive appearance that has been referred to as "primitive", "dinosaur-like" and even "ugly". Although visually similar, the shovelnose sturgeon is much smaller and usually weighs no more than . Pallid sturgeon are much paler in coloration with grayish white backs and sides, while shovelnose sturgeon are brown. Pallid sturgeon turn whiter as they age and younger specimens are easily confused with adult shovelnose sturgeon
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Pallid sturgeon


the 13 U.S. states where the pallid sturgeon is found, only a few other fish species are listed as endangered. Although substantial efforts are being implemented to ensure the survival of this species, the rarity of self-sustaining populations of pallid sturgeon ensures that it will remain federally protected for many decades. Two populations of pallid sturgeon in the Missouri and Yellowstone rivers of Montana are both at risk of extinction, and current projections are that wild pallid sturgeon populations in Montana will be extinct by 2018. Though a vigorous stocking effort was
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Pallid sturgeon


. The barbels are believed to be sensory features to locate food sources. On pallid sturgeon, the two inner barbels are about half as long as the outer ones, while on the shovelnose sturgeon, all four barbels are the same length. The inner barbels of the pallid sturgeon are positioned in front of the outer ones, but those on the shovelnose sturgeon are all located in essentially a straight line. The length and positioning of the barbels is one of the best ways to distinguish the two species. Pallid sturgeon have a
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Pallid sturgeon


study comparing DNA sequences in the three members of the genus "Scaphirhynchus"(pallid, shovelnose, and Alabama sturgeon) showed that the three are distinct species. Between 2001 and 2006, several studies examined two populations of pallid sturgeon located in the upper Great Plains section of the Missouri River and compared them to a southern population located in the Atchafalaya River in Louisiana. These DNA studies concluded that the northern populations of pallid sturgeon are reproductively isolated and are genetically distinct from the Atchafalaya population. However, the genetic variability among pallid sturgeon was found
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Pallid sturgeon


flies and small amounts of detritus and plant material. Though never believed to be common, pallid sturgeon populations rapidly declined during the late 20th century and the species was listed as endangered on September 6, 1990. The U.S. government and most of the states with pallid sturgeon populations have commenced restoration efforts to save the species from extinction. Wild reproduction of pallid sturgeon is rare to nonexistent in most areas; therefore, human intervention is needed to ensure the survival of the species. Pallid sturgeon were previously considered a prized trophy game fish
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Garonne


The European sea sturgeon (Acipenser sturio), also known as the Atlantic sturgeon or common sturgeon, is now a Critically Endangered species (IUCN) status. This species of sturgeon can reach a length of , weigh up to and can reach an age of 100 years. Previously found on most coasts of Europe, it has now become so rare that they ONLY breed in the Garonne river basin in France. Conservation projects are under way to save this fish from extinction via species reintroduction from aquaculture, with the first releases having
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Pallid sturgeon


Pallid sturgeon have never been very common; as early as 1905 when the species was first identified, they represented only one in five of all sturgeon in the lower Missouri River and as few as one in 500 where the Illinois River meets the Mississippi. Between 1985 and 2000, the ratio of pallid sturgeon to all sturgeon netted declined from one in about 400 to one in nearly 650. A 1996 study concluded that between 6,000 and 21,000 pallid sturgeon remained in their natural habitat at that time. Six areas were studied for wild
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Pallid sturgeon


. Pallid sturgeon are actively being raised in a dozen hatcheries and the offspring are being released back to the wild every year. To better understand pallid sturgeon behavior, researchers have implanted radio transmitters to track their movements and help identify possible spawning areas. Federal and state agencies are working together to improve habitat by restoring spawning areas since restoration of these areas is required if the species is to survive in the wild. Taxonomists S. A. Forbes and R. E. Richardson classified the pallid sturgeon in 1905, grouping it in the genus "Parascaphirhynchus
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Pallid sturgeon


that existed prior to Missouri River dam construction. Pallid sturgeon are generally bottom feeders, skimming the sandy reaches of the various rivers and streams in their habitat. Though little is known about the precise eating habits of the species, they are thought to be opportunistic feeders. One study which examined the contents from the stomachs of juvenile pallid sturgeon revealed that their diets were seasonally dependent. Various insects were consumed during some seasons and various fish species during others. These results support the description of the pallid sturgeon's eating habits as opportunistic
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Pallid sturgeon


sturgeon. Because of this ability of two species to hybridize, some biologists have expressed concern that it is a violation of the Endangered Species Act to protect one species that may not be genetically isolated from another. It is not known if the hybrids are able to reproduce or not, although they appear to be the result of pallid sturgeon eggs being fertilized by shovelnose sturgeon males. The pallid sturgeon is one of the largest freshwater fish species in North America. They are generally between in length and weigh as much as . The
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Pallid sturgeon


since they are similar in color. Like the shovelnose sturgeon, their tails are heterocercal, with the top tail fin being longer than the bottom fin, though this is more pronounced in pallid sturgeon. As with other sturgeon, pallid sturgeon lack the scales or bones found in more "modern" species of fish. Instead, they have cartilaginous skeletons with five rows of thick cartilage plates that extend along their sides, undersides, and backs, as well as over most of the head. These thick cartilage plates are covered by
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Pallid sturgeon


lower reaches of the Platte River. Unlike most rivers in the Mississippi-Missouri River System, the Platte River has only a few dams and they are well upstream from its confluence with the Missouri River. The lower Platte River is shallow with numerous sand bars and small islands. Though pallid sturgeon prefer more turbulent and deeper rivers than the Platte, between 1979 and 2003, over a dozen pallid sturgeon, including some from hatcheries, have been captured from the Platte River. A number of these pallid sturgeon have been fitted with
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Pallid sturgeon


to be far less than that between them and the shovelnose sturgeon. Another reason for DNA testing was to determine the rates of hybridization between pallid and shovelnose sturgeon. The southern populations have more hybrids than are found in the middle sections of the Missouri River basin, while the northernmost populations have had few reports of hybrids. Hybrids are most common in the Atchafalaya River in Louisiana, and DNA sequencing in these hybrids showed a genetic distinction from pallid sturgeon, but based on the genetic markers assessed, they were genetically indistinguishable from shovelnose
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Shovelnose sturgeon


shaped. There are four fringed barbels on the ventral side of the rostrum that can be found in a straight line, which is equidistant from the mouth opening to the tip of the snout, unlike pallid sturgeon. The belly of the shovelnose sturgeon is covered with scale-like plates, which is another distinguishing factor from pallid sturgeon who have primarily scaleless bellies. Coloration of the shovelnose sturgeon ranges from a light-brown to buff with a white belly (Pflieger 1997). The shovelnose sturgeon, as its distribution represents,
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Pallid sturgeon


the entire Missouri River and into the Mississippi River. Historically, the species was rare to nonexistent in the upper Mississippi, probably due to a lack of proper habitat. Currently, the species is considered imperiled throughout its entire range. As of 2008, pallid sturgeon can still be found throughout their original range, but their population numbers have severely declined from the mid-20th century. The Missouri and Mississippi rivers from Montana to Louisiana, as well as the Atchafalaya River in Louisiana, continue to harbor an aging population of pallid sturgeon.
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Pallid sturgeon


radio transmitters which track their return to the Platte River when water levels and turbidity conditions are favorable. Coinciding with the majority of the pallid sturgeon that have been captured, the period that is generally most favorable is during the spring and early summer. By midsummer, a reduction in water levels and turbidity on the Platte River encourages pallid sturgeon to return to the Missouri River. The lower reaches of the Platte River, a more than stretch from the Elkhorn River to its confluence with the Missouri River, has suitable spawning habitat for
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Pallid sturgeon


pallid sturgeon, although no conclusive evidence has been found that spawning is occurring in this region. Along with the lower Yellowstone River, the lower Platte River was identified as one of the best of the remaining regions with the potential for the natural spawning. In Missouri, at the Lisbon Bottoms section of the Big Muddy National Fish and Wildlife Refuge, wild pallid sturgeon larvae were collected in 1998. These nonhatchery-raised larvae were the first recovered on the lower Missouri River in the previous 50 years. The recovery was made along
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Pallid sturgeon


a side channel of the Missouri River that had been developed to provide suitable habitat for pallid sturgeon and other fish spawning. The side channel was apparently being used by the larva pallid sturgeon for protection from the swifter currents of the Missouri River. In 2007, the USFWS concluded that hatchery-based reproduction efforts should be continued, along with monitoring of any population changes, to determine the effectiveness of human intervention. The 2007 findings also emphasized the need to determine the most likely areas of spawning, to identify any parasite or disease
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Pallid sturgeon


" and the family Acipenseridae, which includes all sturgeon worldwide. Its closest relatives are the shovelnose sturgeon ("Scaphirhynchus platorynchus"), which is still relatively common, and the critically endangered Alabama sturgeon ("Scaphirhynchus suttkusi"), which may soon become extinct. These three species belong to the subfamily Scaphirhynchinae, which has only one other genus, "Pseudoscaphirhynchus", represented by three species found in west-central Asia. The word pallid means "deficient in color", and compared to other species of sturgeon,
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Pallid sturgeon


Acipenseridae, which originated during the Cretaceous period 70 million years ago, the pallid sturgeon has changed little since then. In 1990, the U.S. Fish and Wildlife Service placed the pallid sturgeon on its endangered species list because few young individuals had been observed in the preceding decade and sightings had greatly diminished; the species is now rarely seen in the wild. It was the first fish species in the Missouri River drainage area to be listed as endangered, and a loss of its habitat is thought to be responsible for its decline.
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Pallid sturgeon


the ages of 9 and 12 years, but do not reach reproductive maturity until they are 15 years old. Reproduction does not take place every year; the average interval between spawnings is three years, although other studies suggest an interval as long as 10 years. Spawning usually takes place May to July. Prior to the construction of dams on the Missouri, pallid sturgeon migrated hundreds of miles upstream to spawn, and sought out rocky or hard surfaces to deposit hundreds of thousands of eggs. One female pallid sturgeon caught in the
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Pallid sturgeon


upper Missouri River was estimated to be carrying 170,000 eggs, representing over 11 percent of its total body weight. After fertilization, pallid sturgeon eggs hatch in 5 to 8 days, after which the larvae drift back downstream for several weeks. As the larvae develop tails, they seek out slower-moving waterways and slowly mature over a period of a dozen years. The rate of survival to maturity for pallid sturgeon larvae is extremely low, and of the hundreds of thousands of eggs spawned, only a few live to adulthood.
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Pallid sturgeon


-raised individuals. The Atchafalaya River basin is designated as RPMA 6 and the findings there were similar to those in RPMAs 4 and 5, but with greater numbers of unique individuals, near 500 in total. Pallid sturgeon prefer moderate to swift river currents and most captured specimens have been recovered in rivers and streams in which the current averages between . They also prefer turbid waterways and water depths between . The species is more commonly found where sandy substrates are plentiful, but also lives in predominately rocky waterways. Pallid sturgeon prefer swift
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Pallid sturgeon


implemented in 1996, until pallid sturgeon females reach reproductive maturity sometime after they are 15 years of age, recovery efforts in Montana will not be readily measurable. The U.S. Bureau of Reclamation has been conducting spring pulse water releases from the Tiber Dam every four to five years to try to recreate a semblance of an annual spring flood to restore and rejuvenate downstream floodplains. These pulse releases are done in an effort to restore suitable habitat for numerous fish species. In Nebraska, a small number of pallid sturgeon have been captured along the
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Pallid sturgeon


The pallid sturgeon ("Scaphirhynchus albus") is an endangered species of ray-finned fish, endemic to the waters of the Missouri and lower Mississippi river basins of the United States. Named for its pale coloration, it is closely related to the relatively common shovelnose sturgeon ("Scaphirhynchus platorynchus"), but is much larger, averaging between in length and in weight at maturity. This species takes 15 years to mature and spawns infrequently, but can live up to a century. A member of the sturgeon family,
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Sturgeon


as threatened or endangered with noticeable declines in sturgeon populations as the demand for caviar increases. IUCN data indicates that over 85% of sturgeon species are at risk of extinction, making them more critically endangered than any other group of animal species. In addition to global restocking efforts, the monitoring of populations and habitat, and various other conservation efforts by national and state resource agencies as applicable to their respective countries, several conservation organizations have been formed to assist in the preservation of sturgeons around the world. On a global scale,
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Pallid sturgeon


the skin and serve as a protective armor. The bony cartilage also extends along the backside, from the dorsal fin to the tail. The pallid sturgeon's snout and head are longer than that of the shovelnose sturgeon. In both species, the mouth is located well back from the tip of the snout. Lacking teeth, they use their extendable mouths to suck up small fish, mollusks, and other food sources from river bottoms. Both species also have four barbels which descend from the snout near the front of the mouth
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Pallid sturgeon


The vast majority of the Missouri River drainage system has been channeled and dammed, reducing the gravel deposits and slow-moving side channels that are its favored spawning areas. Until the middle of the 20th century, pallid sturgeon were common and anglers found catching such a large fish in fresh water a rewarding experience. The species is considered to be good-tasting, and its eggs have been used as caviar, although less commonly than those of many other sturgeon. Efforts to prevent the species from becoming extinct have had modest success
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Committee on the Status of Endangered Wildlife in Canada


in Canada) and 15 wildlife species that are Extinct (X). The other category is not at risk (NAR). COSEWIC provides online updated status reports on designated species. COSEWIC bases its quantitative criteria for species' status assessment on the revised IUCN Red List, the world's most comprehensive inventory of the global conservation status of biological species. COSEWIC provides International Union for the Conservation of Nature (IUCN), the world's main authority on the conservation status of species, with a Regional Red List. IUCN.
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Sturgeon


, as in the case of some subpopulations of white sturgeon ("A. transmontanus") in the Columbia River and Siberian sturgeon ("A. baerii") in the Ob basin. Sturgeons are primarily benthic feeders, with a diet of shells, crustaceans, and small fish. Exceptionally, both "Huso" species, the white sturgeon and the pallid sturgeon feed primarily on other fish as adults. They feed by extending their syphon-like mouths to suck food from the benthos. Having no teeth, they are unable to
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Pallid sturgeon


pallid sturgeon population estimates and recovery recommendations by the United States Fish and Wildlife Service (USFWS) between 1990, when the species was declared endangered, and 2006. The USFWS has referred to these six areas of wild population studies as "recovery priority management areas" (RPMAs). In the northernmost region of the study, known as RPMA 1, located between the Marias River in Montana and the western reaches of Fort Peck Reservoir, only 45 wild (nonhatchery) individuals remain. Of these, no juveniles were observed and
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Pallid sturgeon


species, until their numbers declined and they were placed on the endangered species list. All captured pallid sturgeon must now be released back to the wild. The species was known for being very palatable and the roe from females was used as caviar. The route and the environmental characteristics of Missouri River in the northern Great Plains states of North and South Dakota, Nebraska, and Montana have been significantly altered. The resultant changes to the Missouri River in the upper Great Plains from channelization and impoundment prevent upstream migration. The reduced water
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Pallid sturgeon


long lifespan, living in excess of 50 and perhaps as long as 100 years. They lack bones and scales, which makes it more difficult to establish their age and determine exactly how long they live. As is true for many long-lived species, pallid sturgeon reach reproductive maturity relatively late. Males reach sexual maturity between the ages of 5 and 7 years, while females are believed to become capable of reproduction when they are at least 15 years old. One study of nine females indicated that they begin egg development between
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GIS and aquatic science


pallid sturgeon. At the Columbia Environmental Research Center their effort relies on a customized ArcPad and ArcGIS, both ESRI (Environmental Systems Research Institute) applications, to record sturgeon movements to streamline data collection. A relational database was developed to manage tabular data for each individual sturgeon, including initial capture and reproductive physiology. Movement maps can be created for individual sturgeon. These maps help track the movements of each sturgeon through space and time. This allowed these researchers to prioritize and schedule field personnel efforts to track, map, and recapture
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Amu Darya sturgeon


, it was known to hybridize with "P. hermanni", with the offspring having features that are intermediate between the two species. The Amu Darya sturgeon once occurred throughout the Amu Darya river basin, including its delta in the Aral Sea, but today it is restricted to the middle Amu Darya River (between Chardzhou and Kerki) and the Vakhsh River (an Amu Darya tributary). It has declined because of habitat loss, pollution and poaching, and is rated as critically endangered by the IUCN. Despite its threatened status
14346970
International Union for Conservation of Nature


Unlike other environmental organisations, IUCN does not itself aim to directly mobilize the general public. Education has been part of IUCN's work program since the early days but the focus is on stakeholder involvement and strategic communication rather than mass-campaigns. IUCN runs field projects for habitat and species conservation around the world. It produces the IUCN Red List of Threatened Species and the IUCN Red List of Ecosystems which in a similar way measures risks to ecosystems. The IUCN Red List of Ecosystems is a global standard to assess the conservation status
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Atlantic sturgeon


and was estimated to be about 50 years old. A German-Polish project was underway in 2009 to reintroduce the sturgeon into the Baltic by releasing specimens caught in the Canadian Saint John River into the Oder, a river at the border between Germany and Poland where the species once spawned. The project expanded in 2013 to include Estonia, where one-year-old juveniles were released into the Narva River. IUCN: Near Threatened CITES: Appendix II The American Fisheries Society considers it endangered in all stream systems except conservation-
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Lake Qaraoun


sighted. The ferruginous duck ("Aythya nyroca"), pallid harrier ("Circus macrourus"), greater spotted eagle ("Aquila clanga"), eastern imperial eagle ("Aquila heliaca") and sociable lapwing ("Vanellus gregarius") are some of the birds which are of conservation concern, according to the 2008 IUCN Red List. The El Wauroun Dam, built in the middle reaches of the Litani River, has created an artificial lake at () with water-spread area of . It is
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Conservation biology


they sustain. Aldo Leopold was a classical thinker and writer on such conservation ethics whose philosophy, ethics and writings are still valued and revisited by modern conservation biologists. The International Union for the Conservation of Nature (IUCN) has organized a global assortment of scientists and research stations across the planet to monitor the changing state of nature in an effort to tackle the extinction crisis. The IUCN provides annual updates on the status of species conservation through its Red List. The IUCN Red List serves as an international conservation tool to identify those
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Conservation status


use. The IUCN Red List of Threatened Species is the best known worldwide conservation status listing and ranking system. Species are classified by the IUCN Red List into nine groups set through criteria such as rate of decline, population size, area of geographic distribution, and degree of population and distribution fragmentation. Also included are species that have gone extinct since 500 CE. When discussing the IUCN Red List, the official term "threatened" is a grouping of three categories: critically endangered, endangered, and vulnerable. The Convention on
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Nepenthes bicalcarata


level. The conservation status of "N. bicalcarata" is listed as Vulnerable on the 2006 IUCN Red List of Threatened Species based on an assessment carried out in 2000. In 1997, Charles Clarke informally classified the species as Near Threatened based on the IUCN criteria. This agrees with the conservation status assigned to "N. bicalcarata" by the World Conservation Monitoring Centre. The two thorns that give "N. bicalcarata" its name are unique to this species and bear some of the largest nectaries in the plant kingdom. The purpose of
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Atalaya (plant)


underground woody rootstocks. In South Africa three species grow naturally. The scarcity of "A. natalensis" trees and their restricted range has received the global conservation status (IUCN) of "vulnerable D2". "A. capensis" has a global conservation status (IUCN) listing also, of "Lower Risk / conservation dependent" . In Papua New Guinea "A. papuana" grows naturally in coast monsoon dune scrub (coastal rainforests on dune soils that become seasonally dry, with deciduous trees), tropical savanna forests and in regenerating
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World Commission on Protected Areas


The World Commission on Protected Areas (WCPA) is one of six commissions of the International Union for the Conservation of Nature (IUCN). In 1948, the IUCN established a Committee on National Parks. Two decades later the IUCN had been asked by the international community to take responsibility for preparing a world list of national parks in keeping with its role as a network to share the world’s knowledge on nature conservation, and in 1960, the IUCN raised the status of the Committee to that of a permanent Commission, with
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IUCN Red List of Ecosystems


The IUCN Red List of Ecosystems (RLE) is a global framework for monitoring and documenting the status of ecosystems. It was developed by the International Union for Conservation of Nature as part of the growing toolkit for biodiversity risk assessment. Its main objective is to support conservation, resource use, and management decisions by evaluating all the world's ecosystems by 2025. The Red List of Ecosystem was developed by the International Union for the Conservation of Nature (IUCN), the world's leading authority on the subject and the same entity
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Camas pocket gopher


lupines. Citing concerns of urbanization, habitat loss and active attempts at eradication, NatureServe assesses the camas pocket gophers' conservation status as vulnerable. The conservation status of the camas pocket gopher is classified as "least concern" by the IUCN (International Union for Conservation of Nature) Species Programme, with a stable population trend. The IUCN notes that the gopher is common in its range; studies indicate that populations can recover rapidly after traps are removed from an area, and the species may adapt well to environmental changes. The
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IUCN Red List


The IUCN Red List of Threatened Species (also known as the IUCN Red List or Red Data List), founded in 1964, is the world's most comprehensive inventory of the global conservation status of biological species. It uses a set of criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of
19930289
International Union for Conservation of Nature


its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. Unlike many other international environmental organisations, IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice, and through building partnerships. The organization is best known to the wider public for compiling and publishing the IUCN Red List of Threatened Species, which assesses the conservation status of species worldwide. IUCN has a membership of over 1400
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International Union for Conservation of Nature


governmental and non-governmental organizations. Some 16,000 scientists and experts participate in the work of IUCN commissions on a voluntary basis. It employs approximately 1000 full-time staff in more than 50 countries. Its headquarters are in Gland, Switzerland. IUCN has observer and consultative status at the United Nations, and plays a role in the implementation of several international conventions on nature conservation and biodiversity. It was involved in establishing the World Wide Fund for Nature and the World Conservation Monitoring Centre. In the past, IUCN has been criticized
13568848
International Union for Conservation of Nature


Council of Europe. In 1961, at the request of United Nations Economic and Social Council (ECOSOC), the United Nations Economic and Social Council, IUCN published the first global list of national parks and protected areas which it has updated ever since. IUCN's best known publication, the Red Data Book on the conservation status of species, was first published in 1964. IUCN began to play a part in the development of international treaties and conventions, starting with the African Convention on the Conservation of Nature and Natural Resources.
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Nepenthes spathulata


. It is somewhat reminiscent of the highland heath forests around Bareo in Sarawak, Borneo. Due to the patchy distribution of "N. spathulata", its conservation status is listed as Vulnerable on the 2006 IUCN Red List of Threatened Species. However, Charles Clarke suggests a revised status of Conservation Dependent based on the IUCN criteria. The closest relative of "N. spathulata" appears to be "N. singalana". It differs from this species in having a peristome that is contracted towards the front and very wide at the sides.
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Regional Red List


A Regional Red List (RRL) is a report of the threatened status of species within a certain country or region. It is based on the IUCN Red List of Threatened Species, an inventory of the conservation status of species on a global scale. Regional Red Lists assess the risk of extinction to species within a political management unit and therefore may feed directly into national and regional planning. This project is coordinated by the Zoological Society of London (ZSL), the World Conservation Union (IUCN) and partners in national governments
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Starry sturgeon


The starry sturgeon ("Acipenser stellatus") also known as stellate sturgeon or sevruga (Drakul, , and ), is a species of sturgeon. It is native to the Black, Azov, Caspian and Aegean sea basins, but it has been extirpated from the last and it is predicted that the remaining natural population will follow soon due to overfishing. It is considered critically endangered by the IUCN and international trade in this species (including its caviar) is restricted by CITES. The starry sturgeon is an anadromous species,
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Regional Red List


, universities and organizations throughout the world. Regional Red Lists may assist countries or regions in: The IUCN Categories and Criteria were initially designed to assess the conservation status of species globally, however there was a demand for guidelines to apply the system at the regional level. In 2003, IUCN developed a set of transparent, quantitative criteria to assess the conservation status of species at the regional and national level. This approach is now being applied in many countries throughout the world. Recently, Regional Red Lists have been completed for Mongolian
544309
List of endangered species in North America


goldline darter) "Percina jenkinsi" (Conasauga logperch) "Percina pantherina" (leopard darter) "Percina rex" (Roanoke logperch) "Percina tanasi" (snail darter) "Phoxinus cumberlandensis" (blackside dace) "Plagopterus argentissimus" (woundfin) "Poeciliopsis occidentalis" (Gila toppminnow) "Pristis pectinata" (smalltooth sawfish) "Ptychocheilus lucius" (Colorado pikeminnow) "Salvelinus confluentus" (bull trout) (threatened) "Scaphirhynchus albus" (pallid sturgeon) "Scaphirhynchus suttkusi" (Alabama sturgeon
10064807
Natchitoches National Fish Hatchery


member of the sturgeon family. The hatchery is working to develop spawning and culture techniques to raise a large number of Pallid sturgeon. Workers at the hatchery hope to raise enough of these fish to take the species off of the Endangered Species List. The Channel catfish ("Ictalurus punctatus") is a member of the Ictaluridae family. Natchitoches works to raise many of these fish for release into the wild. The Largemouth bass ("Micropterus salmoides") is the most desired of all freshwater game. Because of this,
13268980
Endangered species


An endangered species is a species which has been categorized as very likely to become extinct in the near future. Endangered (EN), as categorized by the International Union for Conservation of Nature (IUCN) Red List, is the second most severe conservation status for wild populations in the IUCN's schema after  (CR). In 2012, the IUCN Red List featured 3,079 animal and 2,655 plant species as endangered (EN) worldwide. The figures for 1998 were, respectively, 1,102 and 1,197. Many nations have laws that
3812127
List of critically endangered mammals


a full assessment of conservation status. As these species typically have small distributions and/or populations, they are intrinsically likely to be threatened, according to the IUCN. While the category of "data deficient" indicates that no assessment of extinction risk has been made for the taxa, the IUCN notes that it may be appropriate to give them "the same degree of attention as threatened taxa, at least until their status can be assessed." This is a complete list of critically endangered mammalian species and subspecies evaluated by the IUCN.
3524211
List of critically endangered arthropods


As of July 2016, the International Union for Conservation of Nature (IUCN) lists 394 critically endangered arthropod species, including 86 which are tagged as "possibly extinct". 4.1% of all evaluated arthropod species are listed as critically endangered. The IUCN also lists three arthropod subspecies as critically endangered. No subpopulations of arthropods have been evaluated by the IUCN. Additionally 2875 arthropod species (30% of those evaluated) are listed as "data deficient", meaning there is insufficient information for a full assessment of conservation status.
18760593
List of critically endangered molluscs


As of September 2016, the International Union for Conservation of Nature (IUCN) lists 581 critically endangered mollusc species, including 117 which are tagged as "possibly extinct". 8.0% of all evaluated mollusc species are listed as critically endangered. The IUCN also lists 11 mollusc subspecies as critically endangered. No subpopulations of molluscs have been evaluated by the IUCN. Additionally 1988 mollusc species (27% of those evaluated) are listed as "data deficient", meaning there is insufficient information for a full assessment of conservation status.
2441326
List of critically endangered insects


As of July 2016, the International Union for Conservation of Nature (IUCN) lists 195 critically endangered insect species, including 46 which are tagged as "possibly extinct". 3.2% of all evaluated insect species are listed as critically endangered. The IUCN also lists two insect subspecies as critically endangered. No subpopulations of insects have been evaluated by the IUCN. Additionally 1702 insect species (28% of those evaluated) are listed as "data deficient", meaning there is insufficient information for a full assessment of conservation status.
2441517
List of critically endangered invertebrates


As of July 2016, the International Union for Conservation of Nature (IUCN) lists 987 critically endangered invertebrate species, including 206 which are tagged as "possibly extinct". 5.5% of all evaluated invertebrate species are listed as critically endangered. The IUCN also lists 14 invertebrate subspecies as critically endangered. No subpopulations of invertebrates have been evaluated by the IUCN. Additionally 5278 invertebrate species (29% of those evaluated) are listed as "data deficient", meaning there is insufficient information for a full assessment of conservation status.
2770395
International Union for Conservation of Nature


1974) and its formal standing and influence increased. A grant from the Ford Foundation in 1969 enabled it to boost its secretariat and expand operations. During the 1960s, IUCN lobbied the UN General Assembly to create a new status for NGOs. Resolution 1296, adopted in 1968, granted 'consultative' status to NGOs. IUCN itself was eventually accredited with six UN organizations. IUCN was one of the few environmental organisations formally involved in the preparations of the United Nations Conference on the Human Environment (Stockholm, 1972). The
13568858
Sturgeon


, and are known to venture into open ocean. Several species of sturgeon are harvested for their roe, which is processed into the luxury food caviar. This has led to serious overexploitation, which combined with other conservation threats, has brought most of the species to critically endangered status, at the edge of extinction. Sturgeons retain several primitive characters among the bony fishes. Along with other members of the subclass Chondrostei, they are unique among bony fishes because their skeletons are almost entirely cartilaginous. Notably, however, the cartilagineous skeleton
4856455
Livingstone National Park


species conservation Act 1995). Along with international recognition under the International Union for Conservation of Nature (IUCN) Red List of Threatened Species (IUCN 2004). Identifying the habitat of, and monitoring its condition, is an important conservation action in the National recovery plan for the Swift Parrot. The protection status of Livingstone National Park means management is consistent with and intends to deliver the actions in recovery plans for conserving the Swift Parrots overwintering ground, when it leaves breeding grounds in Tasmania and disperses widely over the mainland, from
15355679
List of fishes of Arkansas


and two of the species are listed as endangered nationwide. The lake sturgeon is near the southern end of its range in Arkansas, more commonly found in the Upper Midwest. Pallid and shovelnose sturgeon live in large, turbid rivers of the Mississippi Alluvial Plain, including the lower Arkansas, Mississippi, and lower White rivers downstream of impoundments. Order: Anguilliformes, Family: Anguillidae Order: Clupeiformes, Family: Clupeidae Order: Petromyzontiformes, Family: Petromyzontidae Order: Esociformes, Family: Umbridae Order: Osmeriformes, Family: Osmeridae Order
6278968
Sturgeon


a form of collagen used historically for the clarification of wine and beer, as a predecessor for gelatin, and to preserve parchments. The Jewish law of kashrut, which only permits the consumption of fish with scales, forbids sturgeon, as they have ganoid scales instead of the permitted ctenoid and cycloid scales. While all Orthodox groups forbid the consumption of sturgeon, some conservative groups do allow it. The theological debate over its kosher status can be traced back to such 19th-century reformers as Aron Chorin, though its consumption was
4856481
Pethia cumingii


and Flora of Sri Lanka, IUCN Sri Lanka. IUCN, (2000); The 1999 list of threatened fauna and flora of Sri Lanka, IUCN Sri Lanka. IUCN, (2000); The Fauna of Sri Lanka Status of Taxonomy, Research and Conservation, IUCN Sri Lanka. Perera, N., (2002); Preliminary Survey of Upper Attanagalu River basin in South West Ichthyological Zone of Sri Lanka, SRI LANKA NATURALIST, JOURNAL OF ECOLOGY AND NATURE, Young Zoologist’s Association of Sri Lanka. Pethiyagoda, R.
14745984
Frederick Yeh


sea turtle conservation efforts in Hawaii. According to the global authority on nature conservation, International Union for the Conservation of Nature (IUCN), the sea turtles of the Hawaiian Islands were also once under the threat of near extinction, but are now thriving and their conservation status reclassified as "Least Concern" according to the IUCN Red List. Thus, Yeh established Sea Turtles 911 under Hawaiian jurisdiction, and changed the course of his life by moving to China to save the sea turtles he had hopelessly witnessed being sold, earning
8188720
Rodrigues flying fox


a few hundred in total in the wild, and the bat is classified as endangered by the IUCN. The Durrell Wildlife Conservation Trust has undertaken a successful captive breeding program, and there are now colonies in several zoos. Due to its imperiled status, it is identified by the Alliance for Zero Extinction as a species in danger of imminent extinction. In 2013, Bat Conservation International listed this species as one of the 35 species of its worldwide priority list of conservation. In 2017, the IUCN determined that this species now has
11950036
Whale conservation


the North Atlantic Ocean around Greenland, Iceland, and Norway. There is no information about fin whales in areas outside of the Northern Atlantic, where they still hold the status of being endangered. A complete list of whale conservation statuses as listed by the IUCN is given below. Note that, in the case of the blue and gray whales, the IUCN distinguishes the statuses of various populations. These populations, while not regarded as separate species, are considered sufficiently important in terms of conservation. *Atlantic population of gray whale
1758682
Sturgeon


one such organization is the World Sturgeon Conservation Society (WSCS) whose primary objectives include fostering the "conservation of sturgeon species and restoration of sturgeon stocks world-wide”, and supporting the "information exchange among all persons interested in sturgeons." The North American Sturgeon and Paddlefish Society (NASPS) and Gesellschaft zur Rettung des Störs e.V. are WSCS affiliates. WSCS has been instrumental in organizing global conferences where scientists and researchers can exchange information and address the various conservation challenges that threaten the future of sturgeons. Conservation efforts
4856479
Neosho National Fish Hatchery


species of cold, cool, and warm water fish have been produced at the Neosho NFH since it was established. The current focus is on paddlefish and lake sturgeon restoration, pallid sturgeon recovery, production of rainbow trout for mitigation, and native mussel propagation. The staff at the Neosho Fish Hatchery also protect the endangered Ozark cavefish in one of the springs that supplies the hatchery with water. In 1989, staff discovered Ozark cavefish using the spring. In 2002 efforts were taken to protect the area surrounding. The hatchery water supply
15938853
Montana


–black-footed ferret, whooping crane, least tern, pallid sturgeon and white sturgeon and seven threatened species including the grizzly bear, Canadian lynx and bull trout. The Montana Department of Fish, Wildlife and Parks manages fishing and hunting seasons for at least 17 species of game fish including seven species of trout, walleye and smallmouth bass and at least 29 species of game birds and animals including ring-neck pheasant, grey partridge, elk, pronghorn antelope, mule deer, whitetail deer, gray wolf and bighorn sheep.
20620605
Plains rat


' by the International Union for the Conservation of Nature (IUCN), the IUCN conservation status for the species is 'vulnerable'. The name "Pseudomys" comes from the combined form of the Greek word "pseudes" (meaning "false") and the Latin word "mys" (meaning "mouse"), presumably because of the plains rat's puzzling similarities and differences to "true mice" in the genus "mus". The name "australis" comes from the Latin word "australis" (
21672382
Charles M. Russell National Wildlife Refuge


, burrowing owl, gray wolf, grizzly bear, least tern, mountain plover, northern leopard frog, pallid sturgeon, piping plover, greater sage-grouse, sicklefin chub, and sturgeon chub. The site also contains a large population of sharp-tailed grouse as well as approximately 235 other bird species. The refuge is home to 4,000 prairie elk, the largest remaining prairie elk herd in the United States. Two permittees have grazed bison as "domestic livestock" in a limited fashion, though their leases are mostly on
21223455
Bomb pulse


carried out by Kirsty Spalding demonstrated that neuronal cells are essentially static and do not regenerate during life. She also showed that the number of fat cells is set during childhood and adolescence. Considering the amount of C present in DNA she could establish that 10% of fat cells are renewed annually. The radiocarbon bomb pulse has been used to validate otolith annuli (ages scored from otolith sections) across several fish species including the freshwater drum, lake sturgeon, pallid sturgeon, bigmouth buffalo, arctic salmonids, "Pristipomoides filamentosus""
3710581
Stenogomphurus consanguis


Stenogomphurus consanguis, the Cherokee clubtail, is a species of clubtail dragonfly in the family Gomphidae. It is endemic to the southeastern United States, found in small rivers and streams. The IUCN conservation status of "Stenogomphurus consanguis" is "LC", least concern, with no immediate threat to the species' survival. The IUCN status was reviewed in 2018. The species had a Red List assessment of "rare" from 1986 to 1994, "vulnerable" in 1996, and "endangered" in 2007. There are
16664674
Phanogomphus sandrius


Phanogomphus sandrius, the Tennessee clubtail, is a species of clubtail dragonflies in the family Gomphidae. It is found in the United States, in nine locations of central Tennessee. The IUCN conservation status of "Phanogomphus sandrius" is "VU", vulnerable. The species faces a high risk of endangerment in the medium term, with a decreasing population. The IUCN status was reviewed in 2018. "Phanogomphus sandrius" was assessed as "endangered" in 1996 and "vulnerable" in 2007. "Phanogomphus sandrius" was recently
16664709
Gomphurus septima


Gomphurus septima, or Septima's clubtail, is a species of clubtail dragonflies in the family Gomphidae. The IUCN conservation status of "Gomphurus septima" is "LC", least concern, with no immediate threat to the species' survival. The population is stable. The IUCN status was reviewed in 2018. "Gomphurus septima" was recently considered a member of the genus "Gomphus", but in 2017 it became a member of the genus "Gomphurus" when "Gomphurus" was elevated from subgenus to genus rank.
16664710
Regional Red List


this regional network there will be opportunities to learn from each other’s experiences in applying the IUCN Categories and Criteria and in using this information for conservation planning and priority setting. Two public bodies in Britain, Natural England and the Joint Nature Conservation Committee (JNCC), have produced British Red Data Books and other reviews of different plants and animals assigning their conservation status according to IUCN Red Data Book criteria. In 2016 the JNCC produced a spreadsheet which incorporated these reviews and lists of threatened species based on other crieteria such as Biodiversity
544312
Endangered species


protect conservation-reliant species: for example, forbidding hunting, restricting land development or creating protected areas. Population numbers, trends and species' conservation status can be found at the lists of organisms by population. The conservation status of a species indicates the likelihood that it will become extinct. Many factors are considered when assessing the status of a species; e.g., such statistics as the number remaining, the overall increase or decrease in the population over time, breeding success rates, or known threats. The IUCN Red List of
3812128
Western rosella


is as protected fauna, and of the inland subspecies is one of "likely to become extinct". In the assessment of the inland "P. icterotis xanthogenys" for the federal government's "Action Plan for Australian Birds" 2000 it was assigned the status of 'near threatened'. The 2013 assessment by the International Union for Conservation of Nature (IUCN) on their IUCN redlist assigns a status of species of least concern. It notes the species has become less common and locally extinct and the population trend is declining due
9884559
Yangtze


the 2009 Chinese red list. Among these are two that are considered entirely extinct ("Anabarilius liui liui" and "Atrilinea macrolepis"), two that are extinct in the wild ("Anabarilius polylepis" and "Schizothorax parvus") and five that are critically endangered (Chinese paddlefish, "Euchiloglanis kishinouyei", "Megalobrama elongata", "Schizothorax longibarbus" and "Leiocassis longibarbus"). Additionally, both the Yangtze sturgeon and Chinese sturgeon are considered critically endangered by the IUCN. The survival of these two sturgeon
6659724
Nepenthes mikei


undisclosed for conservation purposes, "N. mikei" grows alongside "N. flava". The conservation status of "N. mikei" is listed as Vulnerable on the IUCN Red List, based on an assessment carried out in 2000. This agrees with an informal assessment made by Charles Clarke in 2001, who also classified the species as Vulnerable based on the IUCN criteria. However, Clarke noted that since substantial populations of "N. mikei" lie within protected areas, they "are unlikely to become threatened in the foreseeable future".
10280073
Data deficient


A data deficient (DD) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as offering insufficient information for a proper assessment of conservation status to be made. This does not necessarily indicate that the species has not been extensively studied; but it does indicate that little or no information is available on the abundance and distribution of the species. The IUCN recommends that care be taken to avoid classing species as "data deficient" when the absence of records may indicate dangerously low abundance:
11837392
List of critically endangered birds


As of May 2019, the International Union for Conservation of Nature (IUCN) lists 224 critically endangered avian species, including 18 which are tagged as "possibly extinct" or "possibly extinct in the wild". 2.1% of all evaluated avian species are listed as critically endangered. No subpopulations of birds have been evaluated by the IUCN. Additionally 61 avian species (0.59% of those evaluated) are listed as "data deficient", meaning there is insufficient information for a full assessment of conservation status. As these species
1905585
List of mammals of Oman


This is a list of the mammal species recorded in Oman. There are at least 62 mammal species in Oman that have been assessed by the International Union for Conservation of Nature (IUCN), of these, one is critically endangered, four are endangered, eight are vulnerable, and two are near threatened. The following tags are used to highlight each species' conservation status as assessed by the IUCN: Some species were assessed using an earlier set of criteria. Species assessed using this system have the following instead of near threatened
21788905
IUCN Red List of Ecosystems


protocols, developed by national or subnational authorities differed in focus and implementation, were often incomparable, and unable of separating strict risk analysis from the process of setting conservation priorities. In 2008, during the IV World Conservation Congress (Barcelona, Spain), the process of developing criteria to estimate their risk status was activated and the IUCN laid the foundations for the creation of a Red List of Ecosystems (RLE). The initial development of the criteria for the Red List of ecosystems was based on analogies with the criteria for species
4416628
Antarctic minke whale


and Brazil, and the latter off South Australia. All involved calves or juveniles. The Antarctic minke whale is currently considered Near Threatened by the IUCN red list. However, the IUCN states that the population size is "clearly in the hundreds of thousands". The Antarctic minke whale is listed on Appendix II of the Convention on the Conservation of Migratory Species of Wild Animals (CMS). It is listed on Appendix II as it has an unfavourable conservation status or would benefit significantly from international co-operation organised by tailored
7370221
Nepenthes faizaliana


regular visitors, the species can be easily observed along the Pinnacles Trail on Mount Api. The conservation status of "N. faizaliana" is listed as Vulnerable on the 2006 IUCN Red List of Threatened Species based on an assessment carried out in 2000. In 1997, Charles Clarke informally classified the species as Vulnerable based on the IUCN criteria, noting that it is Conservation Dependent if populations in protected areas are taken into account. "Nepenthes faizaliana" belongs to the loosely defined ""N. maxima" complex", which also includes
9597176
Astatotilapia bloyeti


Astatotilapia bloyeti is a species of haplochromine cichlid from the coastal river systems of Tanzania. Reports from other areas of Africa are considered to refer to related species. The IUCN considers it to be endemic to the Pangani River and includes Kenya in its range. This species taxonomic status is uncertain and some authorities place it in the genus "Haplochromis" while others retain it in "Astatotilapia". This taxonomic uncertainty has led the IUCN to classify this species conservation status as Data Deficient. The specific name honours the collector of the type
15754960
Phanogomphus diminutus


Phanogomphus diminutus is a species of clubtail dragonfly in the family Gomphidae. It is endemic to the southeastern United States. Its natural habitats are boggy trickles and slow, small streams and lakes, all with part sand, part silt bottoms, and Sphagnum moss margins. The IUCN conservation status of "Phanogomphus diminutus" is "LC", least concern, with no immediate threat to the species' survival. The IUCN status was reviewed in 2018. The species had a Red List assessment of "rare" from 1986 to 1994
16664675
List of critically endangered fishes


meaning there is insufficient information for a full assessment of conservation status. As these species typically have small distributions and/or populations, they are intrinsically likely to be threatened, according to the IUCN. While the category of "data deficient" indicates that no assessment of extinction risk has been made for the taxa, the IUCN notes that it may be appropriate to give them "the same degree of attention as threatened taxa, at least until their status can be assessed." This is a complete list of critically endangered fish species and
17654333
List of critically endangered reptiles


information for a full assessment of conservation status. As these species typically have small distributions and/or populations, they are intrinsically likely to be threatened, according to the IUCN. While the category of "data deficient" indicates that no assessment of extinction risk has been made for the taxa, the IUCN notes that it may be appropriate to give them "the same degree of attention as threatened taxa, at least until their status can be assessed." This is a complete list of critically endangered reptile species and subspecies evaluated by the
2441629
Tamaraw


was classified as "Status inadequately known" by the IUCN. Enough data was gathered on the tamaraw population by 1986, and the IUCN conservation monitoring center declared the species endangered. Throughout succeeding surveys conducted in 1988, 1990, 1994 and 1996, the species remained listed on the Red List as "endangered". The relisting of the species in 1996 fulfilled the IUCN criteria "B1+2c" and "D1". Criterion "B1" indicated that the species' range was less than 500 square kilometers and is known
16233893