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Caddo Mountain Salamander
The Caddo Mountain salamander (''Plethodon caddoensis'') is a species of salamander in the family Plethodontidae endemic to Arkansas in the south-central United States, and only known from the Caddo Mountains, a part of the Ouachita Mountains. The Caddo Mountain salamander has been found to be abundant in or near talus slopes and other rocky habitats, particularly on north-facing slopes covered by mature, mesic forests. It can also be found in secondary growth, mixed deciduous forests. During dry, hot conditions, these salamanders withdraw into underground retreats under shaded talus or in abandoned mines. The Caddo Mountain salamander is abundant within its limited range. It can be locally threatened by habitat loss and degradation. However, most of the populations is within the Ouachita National Forest The Ouachita National Forest is a vast congressionally-designated National Forest that lies in the western portion of Arkansas and portions of extreme-eastern Oklahoma, USA. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clifford Hillhouse Pope
Clifford Hillhouse Pope (April 11, 1899 – June 3, 1974) was a noted American herpetologist. He was the son of Mark Cooper Pope and Harriett Alexander (Hull) Pope, and grew up in Washington, Georgia. While in college in the summers of 1919 and 1920 Pope went to the New York Zoological Society's Tropical Research Station at Katabo Point British Guiana, maintained by William Beebe. Starting in 1921, after graduating from the University of Virginia, he spent many years in China as part of the Central Asiatic Expeditions of the American Museum of Natural History, accompanying Roy Chapman Andrews on the expedition to the Gobi desert that first discovered fossilized dinosaur eggs. Pope mastered the Chinese language and made a total of eight expeditions in Chinese territory prior to 1930. In China he gave scientific names to the Kuatun horned toad, '' Hyla sanchiangensis'', '' Amolops chunganensis'', '' Rana fukienensis'', and others. He also did a great deal of work with Karl Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sarah H
Sarah (born Sarai) is a biblical matriarch and prophetess, a major figure in Abrahamic religions. While different Abrahamic faiths portray her differently, Judaism, Christianity, and Islam all depict her character similarly, as that of a pious woman, renowned for her hospitality and beauty, the wife and half-sister of Abraham, and the mother of Isaac. Sarah has her feast day on 1 September in the Catholic Church, 19 August in the Coptic Orthodox Church, 20 January in the Lutheran Church–Missouri Synod, LCMS, and 12 and 20 December in the Eastern Orthodox Church. In the Hebrew Bible Family According to Book of Genesis 20:12, in conversation with the Philistines, Philistine king Abimelech, Abimelech of Gerar, Abraham reveals Sarah to be both his wife and his half-sister, stating that the two share a father but not a mother. Such unions were later explicitly banned in the Book of Leviticus (). This would make Sarah the daughter of Terah and the half-sister of not only Abraha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salamander
Salamanders are a group of amphibians typically characterized by their lizard-like appearance, with slender bodies, blunt snouts, short limbs projecting at right angles to the body, and the presence of a tail in both larvae and adults. All ten extant salamander families are grouped together under the order Urodela. Salamander diversity is highest in eastern North America, especially in the Appalachian Mountains; most species are found in the Holarctic realm, with some species present in the Neotropical realm. Salamanders rarely have more than four toes on their front legs and five on their rear legs, but some species have fewer digits and others lack hind limbs. Their permeable skin usually makes them reliant on habitats in or near water or other cool, damp places. Some salamander species are fully aquatic throughout their lives, some take to the water intermittently, and others are entirely terrestrial as adults. This group of amphibians is capable of regenerating lost lim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plethodontidae
Plethodontidae, or lungless salamanders, are a family of salamanders. Most species are native to the Western Hemisphere, from British Columbia to Brazil, although a few species are found in Sardinia, Europe south of the Alps, and South Korea. In terms of number of species, they are by far the largest group of salamanders. Biology Adult lungless salamanders have four limbs, with four toes on the fore limbs, and usually with five on the hind limbs. Within many species, mating and reproduction occur solely on land. Accordingly, many species also lack an aquatic larval stage, a phenomenon known as direct development in which the offspring hatch as fully-formed, miniature adults. Direct development is correlated with changes in the developmental characteristics of plethodontids compared to other families of salamanders including increases in egg size and duration of embryonic development. Additionally, the evolutionary loss of the aquatic larval stage is related to a diminishing dep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic
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] |
Arkansas
Arkansas ( ) is a landlocked state in the South Central United States. It is bordered by Missouri to the north, Tennessee and Mississippi to the east, Louisiana to the south, and Texas and Oklahoma to the west. Its name is from the Osage language, a Dhegiha Siouan language, and referred to their relatives, the Quapaw people. The state's diverse geography ranges from the mountainous regions of the Ozark and Ouachita Mountains, which make up the U.S. Interior Highlands, to the densely forested land in the south known as the Arkansas Timberlands, to the eastern lowlands along the Mississippi River and the Arkansas Delta. Arkansas is the 29th largest by area and the 34th most populous state, with a population of just over 3 million at the 2020 census. The capital and most populous city is Little Rock, in the central part of the state, a hub for transportation, business, culture, and government. The northwestern corner of the state, including the Fayetteville–Springdaleâ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ouachita Mountains
The Ouachita Mountains (), simply referred to as the Ouachitas, are a mountain range in western Arkansas and southeastern Oklahoma. They are formed by a thick succession of highly deformed Paleozoic strata constituting the Ouachita Fold and Thrust Belt, one of the important orogenic belts of North America. The Ouachitas continue in the subsurface to the northeast, where they make a poorly understood connection with the Appalachians and to the southwest, where they join with the Marathon uplift area of West Texas. Together with the Ozark Plateaus, the Ouachitas form the U.S. Interior Highlands. The highest natural point is Mount Magazine at . The Ouachita Mountains is a Level III ecoregion designated by the Environmental Protection Agency (EPA). The region has been subdivided into six Level IV ecoregions. Etymology Louis R. Harlan claimed that "Ouachita" is composed of the Choctaw words ''ouac'' for "buffalo" and ''chito'' for "large", together meaning "country of large buffa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scree
Scree is a collection of broken rock fragments at the base of a cliff or other steep rocky mass that has accumulated through periodic rockfall. Landforms associated with these materials are often called talus deposits. Talus deposits typically have a concave upwards form, where the maximum inclination corresponds to the angle of repose of the mean debris particle size. The exact definition of scree in the primary literature is somewhat relaxed, and it often overlaps with both ''talus'' and ''colluvium''. The term ''scree'' comes from the Old Norse term for landslide, ''skriða'', while the term ''talus'' is a French word meaning a slope or embankment. In high-altitude arctic and subarctic regions, scree slopes and talus deposits are typically adjacent to hills and river valleys. These steep slopes usually originate from late-Pleistocene periglacial processes. Notable scree sites in Eastern North America include the Ice Caves at White Rocks National Recreation Area in southern Ve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat Loss
Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby reducing biodiversity and species abundance. Habitat destruction is the leading cause of biodiversity loss. Fragmentation and loss of habitat have become one of the most important topics of research in ecology as they are major threats to the survival of endangered species. Activities such as harvesting natural resources, industrial production and urbanization are human contributions to habitat destruction. Pressure from agriculture is the principal human cause. Some others include mining, logging, trawling, and urban sprawl. Habitat destruction is currently considered the primary cause of species extinction worldwide. Environmental factors can contribute to habitat destruction more indirectly. Geological processes, climate change, introdu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ouachita National Forest
The Ouachita National Forest is a vast congressionally-designated United States National Forest, National Forest that lies in the western portion of Arkansas and portions of extreme-eastern Oklahoma, USA. History The Ouachita National Forest is the oldest National Forest in the southern United States. The forest encompasses , including most of the scenic Ouachita Mountains, Ouachita Mountain Range. Six locations in the forest, comprising , have been congressionally-designated as wilderness areas. ''Ouachita'' is the French spelling of the Indian word ''Washita'', which means "good hunting grounds". The forest was known as Arkansas National Forest on its establishment on December 18, 1907; the name was changed to Ouachita National Forest on April 29, 1926. image:AR Ouachita National Forest.jpg, 250px, Ouachita National Forest Rich in history, the rugged and scenic Ouachita Mountains were explored by Europeans in 1541 by Hernando de Soto (explorer), Hernando de Soto' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plethodon
''Plethodon'' is a genus of salamanders in the family Plethodontidae. They are also known as woodland salamanders or, more rarely, slimy salamanders. All members of the genus are endemic to North America (Canada and USA). They have no aquatic larval stage. In some species, such as ''Plethodon cinereus'', the red-backed salamander, eggs are laid underneath a stone or log. Young hatch in the adult form. Members of ''Plethodon'' primarily eat small invertebrates. The earliest known fossils of this genus are from the Hemphillian of Tennessee in the United States. Species There are 56 species in the genus ''Plethodon''. Listed in alphabetical order of specific name: ''Nota bene'': A binomial authority In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ... in parentheses indicates that th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Described In 1951
Amphibians are four-limbed and ectothermic vertebrates of the class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus amphibians typically start out as larvae living in water, but some species have developed behavioural adaptations to bypass this. The young generally undergo metamorphosis from larva with gills to an adult air-breathing form with lungs. Amphibians use their skin as a secondary respiratory surface and some small terrestrial salamanders and frogs lack lungs and rely entirely on their skin. They are superficially similar to reptiles like lizards but, along with mammals and birds, reptiles are amniotes and do not require water bodies in which to breed. With their complex reproductive needs and permeable skins, amphibians are often ecological indicators; in recent decades there has been a dramatic decline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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