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Amphitropical Distribution
Antitropical (alternatives include biantitropical or amphitropical) distribution is a type of disjunct distribution where a species or clade exists at comparable latitudes across the equator but not in the tropics. For example, a species may be found north of the Tropic of Cancer and south of the Tropic of Capricorn, but not in between. With increasing time since dispersal, the disjunct populations may be the same variety, species, or clade. How the life forms distribute themselves to the opposite hemisphere when they can't normally survive in the middle depends on the species; plants may have their seed spread through wind, animal, or other methods and then germinate upon reaching the appropriate climate, while sea life may be able to travel through the tropical regions in a larval state or by going through deep ocean currents with much colder temperatures than on the surface. For the American amphitropical distribution, dispersal has been generally agreed to be more likely th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Disjunct Distribution
In biology, a taxon with a disjunct distribution is one that has two or more groups that are related but considerably separated from each other geographically. The causes are varied and might demonstrate either the expansion or contraction of a species' range. Range fragmentation Also called range fragmentation, disjunct distributions may be caused by changes in the environment, such as mountain building and continental drift or rising sea levels; it may also be due to an organism expanding its range into new areas, by such means as rafting, or other animals transporting an organism to a new location (plant seeds consumed by birds and animals can be moved to new locations during bird or animal migrations, and those seeds can be deposited in new locations in fecal matter). Other conditions that can produce disjunct distributions include: flooding, or changes in wind, stream, and current flows, plus others such as anthropogenic introduction of alien introduced species either acciden ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osmorhiza Berteroi
''Osmorhiza berteroi'' is a species of flowering plant in the family Apiaceae known by the common name mountain sweet cicely. Systematics ''Osmorhiza berteroi'' forms a species complex together with '' O. depauperata'' and '' O. purpurea''. Until recently these were all treated as ''O. chilensis'', but a revision resulted in the 3 species being split, and also revealed that ''O.chilensis'', published in December 1830 by Hooker and Arnott was a junior synonym of ''O.berteroi'', published in September of the same year by De Candolle. Studies of both chloroplast and nuclear DNA confirm that the various populations of ''O.berteroi'' are monophyletic . Distribution It has an amphitropical distribution being native to both temperate parts of North and South America. In the Northern Hemisphere it is found boreal zones from Alaska to Newfoundland, extending south to South Dakota, and in mountain ranges adjacent to the Pacific coast from the Alaska panhandle to California and Ariz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetraplodon (plant)
''Tetraplodon'' is a genus of mosses belonging to the family Splachnaceae. The genus has cosmopolitan distribution In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of the world in appropriate habitats. Such a taxon, usually a species, is said to exhibit cosmopolitanism or cosmopolitism. The ext .... Species: *'' Tetraplodon angustatus'' *'' Tetraplodon blyttii'' *'' Tetraplodon bryoides'' *'' Tetraplodon caulescens'' *'' Tetraplodon fuegianus'' *'' Tetraplodon itatiaiae'' *'' Tetraplodon mnioides'' *'' Tetraplodon pallidus'' *'' Tetraplodon paradoxus'' *'' Tetraplodon stenophysatus'' *'' Tetraplodon tomentosus'' *'' Tetraplodon urceolatus'' References * * {{Taxonbar, from=Q15850409 Splachnales Moss genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bembidion
''Bembidion'' is the largest genus of beetles in the family Carabidae by number of species.Carl H. Lindroth. ''The Carabidae (Coleoptera) of Fennoscandia and Denmark''. Leiden - Copenhagen: Brill - Scandinavian Science Press, 1985. . P. 129-199. All species are small (less than 7.5 mm) and move very fast. Most of them live close to water. The genus has a biantitropical distribution, meaning they are found in both the Northern and Southern Hemispheres, but not in the tropics.Philip Jackson Darlington. ''Biogeography of the Southern End of the World''. Cambridge: Harvard University Press, 1965. P. 22, 45. In warmer regions it is substituted by closely related ''Tachys'' and other genera. Taxonomy There have been many attempts to divide it into smaller genera, most notably by René Jeannel in 1941 and by G.G. Perrault in 1981, but none of them have been generally accepted. This genus is divided into numerus subgenera, some of which are elevated to full genus rank by various a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crayfish
Crayfish are freshwater crustaceans belonging to the clade Astacidea, which also contains lobsters. In some locations, they are also known as crawfish, craydids, crawdaddies, crawdads, freshwater lobsters, mountain lobsters, rock lobsters, mudbugs, baybugs or yabbies. 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" (folk etymology). The largely American ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scylla Serrata
''Scylla serrata'' (often called mud crab or mangrove crab, although both terms are highly ambiguous, and black crab) is an ecologically important species of crab found in the estuaries and mangroves of Africa, Australasia, and Asia. In their most common forms, their shell colours vary from a deep, mottled green to very dark brown. Distribution The natural range of ''S. serrata'' is in the Indo-Pacific. It is found from South Africa, around the coast of the Indian Ocean, where it is especially abundant in Sri Lanka, to the Southeast Asian Archipelago, as well as from southern Japan to south-eastern Australia, northern New Zealand, And as far east as Fiji and Samoa. The species has also been introduced to Hawaii and Florida. In Hawaii, mud crabs are colloquially known as Samoan crabs, as they were originally imported from American Samoa. As these crabs are known for their robust size and dense meat content, they have been greatly sought after over the years. As a result of o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biological Journal Of The Linnean Society
The ''Biological Journal of the Linnean Society'' is a direct descendant of the oldest biological journal in the world, the ''Transactions of the Linnean Society''. It succeeded the earlier title in 1969. The journal specializes in evolution, and encompasses work across all taxonomic groups in all five kingdoms of living organisms. It includes all methods, whole-organism or molecular, practical or theoretical. The journal is published by the Linnean Society of London The Linnean Society of London is a learned society dedicated to the study and dissemination of information concerning natural history, evolution, and taxonomy. It possesses several important biological specimen, manuscript and literature colle .... References External links * Linnean Society of London Biology journals English-language journals Publications with year of establishment missing {{biology-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solenogyne
''Solenogyne'' is a genus of Australian plants in the tribe Astereae within the family Asteraceae.econd edition">Cassini, Alexandre Henri Gabriel de. 1828. Dictionnaire des Sciences Naturelles [Second edition/nowiki> 56: 174-176in French ; Species * ''Solenogyne bellioides'' Cass. - New South Wales, Queensland * ''Solenogyne dominii'' L.G.Adams - New South Wales, South Australia, Tasmania, Victoria; naturalized in New Zealand * '' Solenogyne gunnii'' (Hook.f.) Cabrera - New South Wales, Tasmania, Victoria; naturalized in New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ... ; formerly included see Lagenophora * '' Solenogyne mikadoi - Lagenophora mikadoi'' References Asteraceae genera Astereae Endemic flora of Australia {{Astereae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Journal Of Botany
The ''American Journal of Botany'' is a monthly peer-reviewed scientific journal which covers all aspects of plant biology. It has been published by the Botanical Society of America since 1914. The journal has an impact factor of 3.038, as of 2019. As of 2018, access is available through the publisher John Wiley & Sons (Wiley). From 1951 to 1953, Oswald Tippo served as its editor; the current editor is Pamela Diggle. History In the early 20th century, the field of botany was rapidly expanding, but the publications in which botanists could publish remained limited and heavily backlogged. By 1905, it was estimated that 250,000 contributions were generated in 8 or 9 languages. At the 1911 annual meeting of the society in Washington D.C., it was noted that at least 300 pages of American botanical contributions were sent abroad for publication, with a backlog resulting in a one-year delay in publication. On 31 December 1907, the Botanical Society of America met in Chicago and formal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ruppia Megacarpa
''Ruppia megacarpa'' is a submerged herb species in the genus ''Ruppia'' found in shallow brackish waters. It is a common on Australasian coasts, including Australia (NSW; SA; Vic Vic (; es, Vic or Pancracio Celdrán (2004). Diccionario de topónimos españoles y sus gentilicios (5ª edición). Madrid: Espasa Calpe. p. 843. ISBN 978-84-670-3054-9. «Vic o Vich (viquense, vigitano, vigatán, ausense, ausetano, ausonense): ...; WA and New Zealand (type locality).Jacobs, S.W.L. and M.A. Brock (1982) A revision of the genus ''Ruppia'' (Potamogetonaceae) in Australia. ''Aquatic Botany'' 14: 325–337 Isolated populations have been currently found in East Asia, including Japan, Korea, and Far East Russia,Ito, Y., T. Ohi-Toma, J. Murata, and Nr. Tanaka (2010) Hybridization and polyploidy of an aquatic plant, ''Ruppia'' (Ruppiaceae), inferred from plastid and nuclear DNA phylogenies. ''American Journal of Botany'' 97: 1156–1167Ito, Y., T. Ohi-Toma, A. V. Skriptsova, M. Sasagawa, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Osmorhiza Depauperata
''Osmorhiza depauperata'' is a species of flowering plant in the carrot family known by the common names bluntseed sweetroot and blunt-fruited sweet-cicely. Distribution and habitat The plant is native to much of western and northern North America, as well as parts of South America. It grows in wooded areas. Description ''Osmorhiza depauperata'' is an erect perennial herb up to 80 centimeters tall. The green leaves have blades up to 12 centimeters wide which are divided into toothed or deeply lobed leaflets. The blade is borne on a long petiole. The inflorescence is a compound umbel In botany, an umbel is an inflorescence that consists of a number of short flower stalks (called pedicels) that spread from a common point, somewhat like umbrella ribs. The word was coined in botanical usage in the 1590s, from Latin ''umbella'' "p ... of many tiny white flowers at the tip of a stemlike peduncle. The club-shaped fruit is ribbed and bristly, measuring 1 to 2 centimeters long. R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bowlesia Incana
''Bowlesia incana'' is a species of flowering plant in the family Apiaceae known by the common name hoary bowlesia. It is native to South America and the southeastern and southwestern United States as far north as Oregon. It can also be found in Pakistan and New Zealand as an introduced species. It grows in many types of habitat. This is a small annual herb growing thin, spreading stems less than 60 centimeters long. The leaves are borne on long petioles and have multilobed rounded or kidney-shaped blades less than 3 centimeters wide. The green herbage of the plant is coated in fine white hairs. The inflorescence An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed o ...s of yellow-green flowers appear in the leaf axils. The tiny inflated fruit is only 2 millimeters wide. External linksJe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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