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Stygobite
Stygofauna are any fauna that live in groundwater systems or aquifers, such as caves, fissures and vugs. Stygofauna and troglofauna are the two types of subterranean fauna (based on life-history). Both are associated with subterranean environments – stygofauna are associated with water, and troglofauna with caves and spaces above the water table. Stygofauna can live within freshwater aquifers and within the pore spaces of limestone, calcrete or laterite, whilst larger animals can be found in cave waters and wells. Stygofaunal animals, like troglofauna, are divided into three groups based on their life history - stygophiles, stygoxenes, and stygobites. # Stygophiles inhabit both surface and subterranean aquatic environments, but are not necessarily restricted to either. # Stygoxenes are like stygophiles, except they are defined as accidental or occasional presence in subterranean waters. Stygophiles and stygoxenes may live for part of their lives in caves, but don't complete ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cave
Caves or caverns are natural voids under the Earth's Planetary surface, surface. Caves often form by the weathering of rock and often extend deep underground. Exogene caves are smaller openings that extend a relatively short distance underground (such as rock shelters). Caves which extend further underground than the opening is wide are called endogene caves. Speleology is the science of exploration and study of all aspects of caves and the cave environment. Visiting or exploring caves for recreation may be called Caving, ''caving'', ''potholing'', or ''spelunking''. Formation types The formation and development of caves is known as ''speleogenesis''; it can occur over the course of millions of years. Caves can range widely in size, and are formed by various geological processes. These may involve a combination of chemical processes, erosion by water, tectonic forces, microorganisms, pressure, and atmospheric influences. Isotopic dating techniques can be applied to cave sedime ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fauna
Fauna (: faunae or faunas) is all of the animal life present in a particular region or time. The corresponding terms for plants and fungi are ''flora'' and '' funga'', respectively. Flora, fauna, funga and other forms of life are collectively referred to as '' biota''. Zoologists and paleontologists use ''fauna'' to refer to a typical collection of animals found in a specific time or place, e.g. the " Sonoran Desert fauna" or the " Burgess Shale fauna". Paleontologists sometimes refer to a sequence of faunal stages, which is a series of rocks all containing similar fossils. The study of animals of a particular region is called faunistics. Etymology ''Fauna'' comes from the name Fauna, a Roman goddess of earth and fertility, the Roman god Faunus, and the related forest spirits called Fauns. All three words are cognates of the name of the Greek god Pan, and ''panis'' is the Modern Greek equivalent of fauna (πανίς or rather πανίδα). ''Fauna'' is also the word fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antrobia Culveri
The Tumbling Creek cavesnail (''Antrobia culveri'') is a species of freshwater cave snail with gills and an operculum, an aquatic gastropod mollusk in the family Amnicolidae.Bouchet, P. (2014). Antrobia culveri Hubricht, 1971. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=729787 on 2015-02-19 ''Antrobia culveri'' is the only species in the genus ''Antrobia''.Kabat A. R. & Hershler R. (1993). "The prosobranch snail family Hydrobiidae (Gastropoda: Rissooidea): review of classification and supraspecific taxa". '' Smithsonian Contributions to Zoology'' 547: 1-94PDF This is an endangered species. The common name refers to Tumbling Creek Cave, a National Natural Landmark, in Taney County, Missouri, US Taxonomy The Tumbling Creek cavesnail was described as a new species by Leslie Hubricht in 1971, from specimens taken by David Culver, Thomas Aley, and Hubricht in 1969 and 1970. ''Antrobia culveri'' is the type species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subterranean Fauna
file:P anguinus1.jpg, The olm (''Proteus anguinus''), a typical cave dwelling chordate, Endemism, endemic of Dinaric Alps Subterranean fauna refers to Animal, animal species that are adaptation, adapted to live in an underground Natural environment, environment. Troglofauna and stygofauna are the two types of subterranean fauna. Both are associated with hypogeal habitats – troglofauna is associated with terrestrial subterranean environment (caves and underground spaces above the water table), and stygofauna with all kind of subterranean waters (groundwater, aquifers, subterranean rivers, dripping bowls, gours, etc.). Environment Subterranean fauna is found worldwide and includes representatives of many animal groups, mostly arthropods and other invertebrates. However, there is a number of vertebrates (such as cavefishes and cave salamanders), although they are less common. Because of the complexity in exploring underground environments, many subterranean species are yet to be dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orconectes Australis (Marshal Hedin)
''Orconectes australis'', the southern cave crayfish, is a species of crayfish in the Cambaridae family found in Alabama and Tennessee Tennessee (, ), officially the State of Tennessee, is a landlocked U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders Kentucky to the north, Virginia to the northeast, North Carolina t .... Ages of 176 years have been claimed for ''O. australis'', though this was reduced to ≤22 years in a 2012 study. References Cambaridae Freshwater crustaceans of North America Crustaceans described in 1941 Cave crayfish {{crayfish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metabolism
Metabolism (, from ''metabolē'', "change") is the set of life-sustaining chemical reactions in organisms. The three main functions of metabolism are: the conversion of the energy in food to energy available to run cellular processes; the conversion of food to building blocks of proteins, lipids, nucleic acids, and some carbohydrates; and the elimination of metabolic wastes. These enzyme-catalyzed reactions allow organisms to grow and reproduce, maintain their Structures#Biological, structures, and respond to their environments. The word ''metabolism'' can also refer to the sum of all chemical reactions that occur in living organisms, including digestion and the transportation of substances into and between different cells, in which case the above described set of reactions within the cells is called intermediary (or intermediate) metabolism. Metabolic reactions may be categorized as ''catabolic''—the ''breaking down'' of compounds (for example, of glucose to pyruvate by c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crayfish
Crayfish are freshwater crustaceans belonging to the infraorder Astacidea, which also contains lobsters. Taxonomically, they are members of the superfamilies Astacoidea and Parastacoidea. They breathe through feather-like gills. Some species are found in brooks and streams, where fresh water is running, while others thrive in swamps, ditches, and paddy fields. Most crayfish cannot tolerate polluted water, although some species, such as '' Procambarus clarkii'', are hardier. Crayfish feed on animals and plants, either living or decomposing, and detritus. The term "crayfish" is applied to saltwater species in some countries. Terminology The name "crayfish" comes from the Old French word ' ( Modern French '). The word has been modified to "crayfish" by association with "fish" ( French language">Modern French '). The word has been modified to "crayfish" by association with "fish" ( American variant "crawfish" is similarly derived. Some kinds of crayfish are known lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orconectes Australis
''Orconectes australis'', the southern cave crayfish, is a species of crayfish in the Cambaridae family found in Alabama and Tennessee Tennessee (, ), officially the State of Tennessee, is a landlocked U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders Kentucky to the north, Virginia to the northeast, North Carolina t .... Ages of 176 years have been claimed for ''O. australis'', though this was reduced to ≤22 years in a 2012 study. References Cambaridae Freshwater crustaceans of North America Crustaceans described in 1941 Cave crayfish {{crayfish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shelta Cave
Shelta Cave is a cave and lake located in Huntsville, Madison County, Alabama, United States. It is described as one of the most bio-diverse caves within the Appalachian Mountains. The cave is currently owned and managed as a nature preserve by the National Speleological Society, with their main offices directly above the cave. It was declared a National Natural Landmark in October 1972. History This cave was an underground bar and dance hall in the early 1900s. Speleology and wildlife The cave is open to members of the NSS during certain times of the year to minimize the impact on the biome. There are now three sinkhole entrances. The lake can be as large as during the winter and early spring rainy season. Other times of the year, the lake bed is exposed. There are nine species which were first discovered in this cave. The Shelta Cave crayfish is endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astyanax Jordani
''Astyanax jordani'' is a freshwater fish of the characin family (family Characidae) of order Characiformes, native to Mexico. It is sometimes called the cave tetra, or by its local Spanish name ''sardina ciega''. A blind cave fish, ''A. jordani'' is very closely related to the Mexican tetra (''A. mexicanus'') and their taxonomy is disputed. Some treat the two as variants of a single species (in which case ''A. jordani'' is a junior synonym of ''A. mexicanus'') and this is supported by phylogenetic evidence, but others continue to recognize the two as separate species. ''A. jordani'' is listed on the IUCN Red List as Endangered on the basis of a dwindling population and an acutely-restricted, highly variable habitat. It is fairly resilient, however, having a population doubling time of 15 months. The fish was named in honor of C. Basil Jordan of the Texas Aquaria Fish Company (Dallas, Texas), who donated the first type specimens and documented and observed the first wild bl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Geographic (magazine)
''National Geographic'' (formerly ''The National Geographic Magazine'', sometimes branded as ''Nat Geo'') is an American monthly magazine published by National Geographic Partners. The magazine was founded in 1888 as a scholarly journal, nine months after the establishment of the society, but is now a popular magazine. In 1905, it began including pictures, a style for which it became well known. Its first color photos appeared in the 1910s. During the Cold War, the magazine committed itself to present a balanced view of the physical geography, physical and human geography of countries beyond the Iron Curtain. Later, the magazine became outspoken on Environmentalism, environmental issues. Until 2015, the magazine was completely owned and managed by the National Geographic Society. Since 2015, controlling interest has been held by National Geographic Partners. Topics of features generally concern geography, history, nature, science, and world culture. The magazine is well known ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The American Naturalist
''The American Naturalist'' is the monthly Peer review, peer-reviewed scientific journal of the American Society of Naturalists, whose purpose is "to advance and to diffuse knowledge of organic evolution and other broad biological principles so as to enhance the conceptual unification of the biological sciences." It was established in 1867 and is published by the University of Chicago Press. The journal covers research in ecology, evolutionary biology and Ethology, behavior. As of 2023, the editor-in-chief is Volker H. W. Rudolf. According to the ''Journal Citation Reports'', the journal had a 2023 impact factor of 2.4. History The journal was founded by Alpheus Hyatt, Edward Sylvester Morse, Edward S. Morse, Alpheus Spring Packard Jr., Alpheus S. Packard Jr., and Frederick Ward Putnam, Frederick W. Putnam at the Essex Institute in Salem, Massachusetts. The first issue appeared in print dated March 1867."American Naturalist," in International Magazine Co., ''Periodicals,'' vol. 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
