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Extirpated
Local extinction, also known as extirpation, refers to a species (or other taxon) of plant or animal that ceases to exist in a chosen geographic area of study, though it still exists elsewhere. Local extinctions are contrasted with global extinctions. Local extinctions mark a change in the ecology of an area. In recent times, local extinction has sometimes been followed by a replacement of the species taken from other locations; wolf reintroduction is an example of this. The term "local extinction" is highly vernacular. The more proper biological term is ''extirpation''. Discussion Glaciation can lead to local extinction. This was the case during the Pleistocene glaciation event in North America. During this period, most of the native North American species of earthworm were killed in places covered by glaciation. This left them open for colonization by European earthworms brought over in soil from Europe. Species naturally become extirpated from islands over time. The number ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reintroduction
Species reintroduction is the deliberate release of a species into the wild, from captivity or other areas where the organism is capable of survival. The goal of species reintroduction is to establish a healthy, genetically diverse, self-sustaining population to an area where it has been extirpated, or to augment an existing population. Species that may be eligible for reintroduction are typically threatened or endangered in the wild. However, reintroduction of a species can also be for pest control; for example, wolves being reintroduced to a wild area to curb an overpopulation of deer. Because reintroduction may involve returning native species to localities where they had been extirpated, some prefer the term "reestablishment". Humans have been reintroducing species for food and pest control for thousands of years. However, the practice of reintroducing for conservation is much younger, starting in the 20th century. Methods for sourcing individuals There are a variety of appro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wolf Reintroduction
Wolf reintroduction involves the reintroduction of a portion of grey wolves in areas where native wolves have been extirpated. More than 30 subspecies of ''Canis lupus'' have been recognized, and grey wolves, as colloquially understood, comprise nondomestic/feral subspecies. Reintroduction is only considered where large tracts of suitable wilderness still exist and where certain prey species are abundant enough to support a predetermined wolf population. United States Arizona and New Mexico The five last known wild Mexican gray wolves were captured in 1980 in accordance with an agreement between the United States and Mexico intended to save the critically endangered subspecies. Between 1982 and 1998, a comprehensive captive-breeding program brought Mexican wolves back from the brink of extinction. Over 300 captive Mexican wolves were part of the recovery program. The ultimate goal for these wolves is to reintroduce them to areas of their former range. In March 1998, this r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saltwater Crocodile
The saltwater crocodile (''Crocodylus porosus'') is a crocodilian native to saltwater habitats and brackish wetlands from India's east coast across Southeast Asia and the Sundaic region to northern Australia and Micronesia. It has been listed as Least Concern on the IUCN Red List since 1996. It was hunted for its skin throughout its range up to the 1970s, and is threatened by illegal killing and habitat loss. It is regarded as dangerous to humans. The saltwater crocodile is considered to be the largest living reptile. Males can grow up to a length of , rarely exceeding , and a weight of . Females are much smaller and rarely surpass . It is also called the estuarine crocodile, Indo-Pacific crocodile, marine crocodile, sea crocodile, and informally as the saltie. A large and opportunistic hypercarnivorous apex predator, they ambush most of their prey and then drown or swallow it whole. They are capable of prevailing over almost any animal that enters their territory, including ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wolf Canis Lupus Wildpark Poing-09
The wolf (''Canis lupus''; : wolves), also known as the gray wolf or grey wolf, is a large canine native to Eurasia and North America. More than thirty subspecies of ''Canis lupus'' have been recognized, and gray wolves, as popularly understood, comprise wild subspecies. The wolf is the largest extant member of the family Canidae. It is also distinguished from other ''Canis'' species by its less pointed ears and muzzle, as well as a shorter torso and a longer tail. The wolf is nonetheless related closely enough to smaller ''Canis'' species, such as the coyote and the golden jackal, to produce fertile hybrids with them. The banded fur of a wolf is usually mottled white, brown, gray, and black, although subspecies in the arctic region may be nearly all white. Of all members of the genus ''Canis'', the wolf is most specialized for cooperative game hunting as demonstrated by its physical adaptations to tackling large prey, its more social nature, and its highly advanced ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Durvillaea Potatorum Bull Kelp P2153881
''Durvillaea'' is a genus of large brown algae in the monotypic family Durvillaeaceae. All members of the genus are found in the southern hemisphere, including Australia, New Zealand, South America, and various subantarctic islands. ''Durvillaea'', commonly known as southern bull kelps, occur on rocky, wave-exposed shorelines and provide a habitat for numerous intertidal organisms. Many species exhibit a honeycomb-like structure in their fronds that provides buoyancy, which allows individuals detached from substrates to raft alive at sea, permitting dispersal for hundreds of days over thousands of kilometres. ''Durvillaea'' species have been used for clothing, tools and as a food source by many indigenous cultures throughout the South Pacific, and they continue to play a prominent role in Chilean cuisine. Common name and etymology The common name for ''Durvillaea'' is southern bull kelp, although this is often shortened to bull kelp, which can generate confusion with the North Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Durvillaea
''Durvillaea'' is a genus of large brown algae in the monotypic family Durvillaeaceae. All members of the genus are found in the southern hemisphere, including Australia, New Zealand, South America, and various subantarctic islands. ''Durvillaea'', commonly known as southern bull kelps, occur on rocky, wave-exposed shorelines and provide a habitat for numerous intertidal organisms. Many species exhibit a honeycomb-like structure in their fronds that provides buoyancy, which allows individuals detached from substrates to raft alive at sea, permitting dispersal for hundreds of days over thousands of kilometres. ''Durvillaea'' species have been used for clothing, tools and as a food source by many indigenous cultures throughout the South Pacific, and they continue to play a prominent role in Chilean cuisine. Common name and etymology The common name for ''Durvillaea'' is southern bull kelp, although this is often shortened to bull kelp, which can generate confusion with the North Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sky Island
Sky islands are topographic isolation, isolated mountains surrounded by radically different lowland environments. The term originally referred to those found on the Mexican Plateau, and has extended to similarly isolated montane ecosystems, high-elevation forests. The isolation has significant implications for these natural habitats. The Southwestern United States, American Southwest region began warming up between and 10,000 years Before Present, BP and atmospheric temperatures increased substantially, resulting in the formation of vast deserts that isolated the sky islands. Endemism, altitudinal migration, and Relict (biology), relict populations are some of the natural phenomena to be found on sky islands. The complex dynamics of species richness on sky islands draws attention from the discipline of biogeography, and likewise the biodiversity is of concern to conservation biology. One of the key elements of a sky island is separation by physical distance from the other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astyanax Fasciatus
In Greek mythology, Astyanax (; grc, Ἀστυάναξ ''Astyánax'', "lord of the city") was the son of Hector, the crown prince of Troy, and his wife, Princess Andromache of Cilician Thebe."Astyanax". ''Oxford Classical Dictionary''. Oxford, 1949, p. 101 (''s.v.'' "Ἀνδρομάχη"). His birth name was Scamandrius (in Greek: Σκαμάνδριος Skamandrios, after the river Scamander''A Classical Manual: Being a Mythological, Historical, and Geographical Commentary on Pope's Homer and Dryden's Aeneid of Virgil''. J. Murray, 1833, p. 189.), but the people of Troy nicknamed him Astyanax (i.e. high king, or overlord of the city), because he was the son of the city's great defender (''Iliad'' VI, 403) and the heir apparent's firstborn son. During the Trojan War, Andromache hid the child in Hector's tomb, but the child was discovered. His fate was debated by the Greeks, for if he were allowed to live, it was feared he would avenge his father and rebuild Troy. In the version g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Characidium Zebra
''Characidium'' is a genus of fish in the family Crenuchidae (South American darters). They are mainly found in South America, but ''C. marshi'' is from Panama. They are small (less than long), slender fish that live on the bottom in flowing fresh waters and feed on small animals such as insects. Species There are currently 69 recognized species in this genus: * '' Characidium alipioi'' Travassos, 1955 * '' Characidium amaila'' Lujan, Agudelo-Zamora, Taphorn, Booth & López-Fernández, 2013Lujan, N.K., Agudelo-Zamora, H., Taphorn, D.C., Booth, P.N. & López-Fernández, H. (2013)Description of a New, Narrowly Endemic South American Darter (Characiformes: Crenuchidae) from the Central Guiana Shield Highlands of Guyana.''Copeia, 2013 (3): 454-463.'' * '' Characidium bahiense'' V. G. Almeida, 1971 * '' Characidium bimaculatum'' Fowler, 1941 * '' Characidium boavistae'' Steindachner, 1915 * '' Characidium boehlkei'' Géry, 1972 * '' Characidium bolivianum'' N. E. Pearson, 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acestrorhynchus Lacustris
''Acestrorhynchus lacustris'' is a species of fish in the family Acestrorhynchidae. It was described by Christian Frederik Lütken in 1875, originally under the genus '' Xiphorhamphus''. It inhabits the São Francisco and Paraná River. It reaches a maximum standard length Fish measurement is the measuring of individual fish and various parts of their anatomies. These data are used in many areas of ichthyology, including taxonomy and fisheries biology. Overall length * Standard length (SL) is the length of a fish m ... of . ''A. lacustris'' spawns between July–March. at www.fishbase.org. References [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lyttelton Harbour
Lyttelton Harbour / Whakaraupō is one of two major inlets in Banks Peninsula, on the coast of Canterbury, New Zealand; the other is Akaroa Harbour on the southern coast. It enters from the northern coast of the peninsula, heading in a predominantly westerly direction for approximately from its mouth to the aptly-named Head of the Bay near Teddington. The harbour sits in an eroded caldera of the ancient Banks Peninsula Volcano, the steep sides of which form the Port Hills on its northern shore. The harbour's main population centre is Lyttelton, which serves the main port to the nearby city of Christchurch, linked with Christchurch by the single-track Lyttelton rail tunnel (opened 1867), a two lane road tunnel (opened 1964) and two roads over the Port Hills. Diamond Harbour lies to the south and the Māori village of Rāpaki to the west. At the head of the harbour is the settlement of Governors Bay. The reserve of Otamahua / Quail Island is near the harbour head and Ripap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redbreast Tilapia
The redbreast tilapia (''Coptodon rendalli'') is a species of fish in the family Cichlidae. It is found widely in the southern half of Africa. Its natural habitats are freshwater lakes and freshwater marshes. It is known as the redbreast kurper in South Africa. Distribution The species is found in the drainage basins of the upper Congo River and the Kasai River, in Lake Tanganyika, Lake Malawi, Zambezi River, and the coastal regions of the Zambezi outlet to KwaZulu-Natal, as well as in the Limpopo River, the Okavango River, and the Cunene River. They have been established as edible fish in several countries. Description ''C. rendalli'' grows to a maximum length of 45 cm and a maximum weight of 2.5 kg, and possesses a high-backed, sideways oblate body. Its body height is 42.2 to 49.4% of its standard length, and its head length is 31.1% to 37.5% of standard length. The top of its head is convex, or sometimes concave in large specimen due to the continued growth of the mouth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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