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Jens Christian Clausen
Jens Christen (Christian) Clausen (March 11, 1891 – November 22, 1969) was a Denmark, Danish-United States, American botanist, geneticist, and ecologist. He is considered a pioneer in the field of ecological and evolutionary genetics of plants. Biography Clausen was born in Nr. Eskilstrup, Soderup parish on the island of Zealand, Denmark. He was the son of Christen Augustinus Clausen (1858-1938) and Christine (Christensen) Clausen (1856-1933). His parents were farmers and at age 14 he took responsibility for the family farm and was largely educated at home with the assistance of a local school teacher. He studied Mendelian genetics, Mendel's genetics and Darwinism, Darwinian evolutionary theory. In 1913 he entered the University of Copenhagen, where he studied botany, genetics and ecology. Christen C. Raunkiær, Christen Raunkiær suggested he undertake graduate studies and Clausen chose to study the genetics and ecology of the plant family Violaceae. He studied hybridization ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eskilstrup
Eskilstrup is a town some north of Nykøbing Falster on the Danish island of Falster. As of 2022, it had a population of 1,066. History Eskilstrup Church built in the Romanesque style dates from the 12th century. In accordance with a local tradition, it is painted red. It is best known for its frescos, said to be Denmark's oldest. The town has grown up around Eskilstrup Station which opened together with the Falster Railway in 1872. The earliest buildings included the businesses and hotel close to the station on the main street. The town today Eskilstrup is conveniently located close to the E47 motorway from Copenhagen to Rødby Havn. Facilities include a school, sportshall, day nursery, food store and a hotel. There are beech woods in the surrounding countryside and it is not far to the coast. Some 300 children attend the local school. Local landmarks include the water tower, windmill and sportshall. Nearby Ønslev benefits from the town's activities and services. Attra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Botany
Botany, also called , plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek word (''botanē'') meaning " pasture", " herbs" "grass", or " fodder"; is in turn derived from (), "to feed" or "to graze". Traditionally, botany has also included the study of fungi and algae by mycologists and phycologists respectively, with the study of these three groups of organisms remaining within the sphere of interest of the International Botanical Congress. Nowadays, botanists (in the strict sense) study approximately 410,000 species of land plants of which some 391,000 species are vascular plants (including approximately 369,000 species of flowering plants), and approximately 20,000 are bryophytes. Botany originated in prehistory as herbalism with the efforts of early humans to identify – and later cultivate – ed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carnegie Institution Of Washington
The Carnegie Institution of Washington (the organization's legal name), known also for public purposes as the Carnegie Institution for Science (CIS), is an organization in the United States established to fund and perform scientific research. The institution is headquartered in Washington, D.C. , the Institution's endowment was valued at $926.9 million. In 2018 the expenses for scientific programs and administration were $96.6 million. Eric Isaacs is president of the institution. Name More than 20 independent organizations were established through the philanthropy of Andrew Carnegie and now feature his surname. They perform work involving topics as diverse as art, education, international affairs, world peace, and scientific research. In 2007, the Carnegie Institution of Washington adopted the public name "Carnegie Institution for Science" to distinguish itself from other organizations established by and named for Andrew Carnegie. The Institution remains officially and legall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Native Species
In biogeography, a native species is indigenous to a given region or ecosystem if its presence in that region is the result of only local natural evolution (though often popularised as "with no human intervention") during history. The term is equivalent to the concept of indigenous or autochthonous species. Every wild organism (as opposed to a domesticated organism) is known as an introduced species within the regions where it was anthropogenically introduced. If an introduced species causes substantial ecological, environmental, and/or economic damage, it may be regarded more specifically as an invasive species. The notion of nativity is often a blurred concept, as it is a function of both time and political boundaries. Over long periods of time, local conditions and migratory patterns are constantly changing as tectonic plates move, join, and split. Natural climate change (which is much slower than human-caused climate change) changes sea level, ice cover, temperature, and r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California
California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territories of the United States by population, most populous U.S. state and the List of U.S. states and territories by area, 3rd largest by area. It is also the most populated Administrative division, subnational entity in North America and the 34th most populous in the world. The Greater Los Angeles area and the San Francisco Bay Area are the nation's second and fifth most populous Statistical area (United States), urban regions respectively, with the former having more than 18.7million residents and the latter having over 9.6million. Sacramento, California, Sacramento is the state's capital, while Los Angeles is the List of largest California cities by population, most populous city in the state and the List of United States cities by population, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecological Genetics
Ecological genetics is the study of genetics in natural populations. Traits in a population can be observed and quantified to represent a species adapting to a changing environment. This contrasts with classical genetics, which works mostly on crosses between laboratory strains, and DNA sequence analysis, which studies genes at the molecular level. Research in this field is on traits of ecological significance—that is, traits related to fitness, which affect an organism's survival and reproduction. Examples might be: flowering time, drought tolerance, polymorphism, mimicry, and avoidance of attacks by predators. Ecological genetics is an especially useful tool when studying endangered species. Meta-barcoding and eDNA are used to examine the biodiversity of species in an ecosystem. Research usually involves a mixture of field and laboratory studies. Samples of natural populations may be taken back to the laboratory for their genetic variation to be analyzed. Changes in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvey Monroe Hall
Harvey Monroe Hall (March 29, 1874 – March 11, 1932) was an American botanist particularly noted for his taxonomic work in the western United States. Hall was born in Lee County, Illinois, on March 29, 1874, and raised near Riverside, California. He studied botany at the University of California, earning a B.S. in 1901, M.S. in 1902, and Ph.D. in 1906. In 1910, he married fellow University of California graduate Carlotta Case. Their daughter Martha was born in 1916. He died while in Washington, DC for a conference on March 11, 1932. Career and research University of California Studying plant taxonomy under W. L. Jepson at the University of California, Hall completed his doctoral dissertation, ''The Compositae of Southern California'', in 1906. He went on to be a professor of botany at the university and botanist for the agricultural experiment station. His early work focused on taxonomic studies of plants in California, and he added over 200,000 specimens to the herbarium. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crepis
''Crepis'', commonly known in some parts of the world as hawksbeard or hawk's-beard (but not to be confused with the related genus ''Hieracium'' with a similar common name), is a genus of annual and perennial flowering plants of the family Asteraceae superficially resembling the dandelion, the most conspicuous difference being that ''Crepis'' usually has branching scapes with multiple heads (though solitary heads can occur). The genus name ''Crepis'' derives from the Greek ''krepis'', meaning "slipper" or "sandal", possibly in reference to the shape of the fruit.''Crepis''. Flora of North America. The genus is distributed throughout the Northern Hemisphere and |
University Of California, Berkeley
The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California) is a public land-grant research university in Berkeley, California. Established in 1868 as the University of California, it is the state's first land-grant university and the founding campus of the University of California system. Its fourteen colleges and schools offer over 350 degree programs and enroll some 31,800 undergraduate and 13,200 graduate students. Berkeley ranks among the world's top universities. A founding member of the Association of American Universities, Berkeley hosts many leading research institutes dedicated to science, engineering, and mathematics. The university founded and maintains close relationships with three national laboratories at Berkeley, Livermore and Los Alamos, and has played a prominent role in many scientific advances, from the Manhattan Project and the discovery of 16 chemical elements to breakthroughs in computer science and genomics. Berkeley is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Veterinary And Agricultural University
The Royal Veterinary and Agricultural University ( da, Kongelige Veterinær- og Landbohøjskole, abbr. KVL) was a veterinary and agricultural science university in Denmark. It was founded in 1856 and operated until 2007, when it became a part of the University of Copenhagen. It had its headquarters in Frederiksberg, Copenhagen. History The university was founded in 1856. Its main building was inaugurated in 1858. The Royal Veterinarian School moved from Sankt Annæ Gade into the main building after its inauguration. On January 1, 2007, the Royal Veterinary and Agricultural University was merged into the University of Copenhagen and was renamed as the Faculty of Life Sciences. This was later split up, with the veterinary part merging into the Faculty of Health and Medical Sciences and the rest merging into the Faculty of Science. Locations Main campus The original three-winged main building (with the pergola) on Bülowsvej 17 was built between 1856 and 1858 and was designed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Introgression
Introgression, also known as introgressive hybridization, in genetics is the transfer of genetic material from one species into the gene pool of another by the repeated backcrossing of an interspecific hybrid with one of its parent species. Introgression is a long-term process, even when artificial; it may take many hybrid generations before significant backcrossing occurs. This process is distinct from most forms of gene flow in that it occurs between two populations of different species, rather than two populations of the same species. Introgression also differs from simple hybridization. Simple hybridization results in a relatively even mixture; gene and allele frequencies in the first generation will be a uniform mix of two parental species, such as that observed in mules. Introgression, on the other hand, results in a complex, highly variable mixture of genes, and may only involve a minimal percentage of the donor genome. Definition Introgression or introgressive hybri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Violaceae
Violaceae is a family of flowering plants established in 1802, consisting of about 1000 species in about 25 genera. It takes its name from the genus ''Viola'', the violets and pansies. Older classifications such as the Cronquist system placed the Violaceae in an order named after it, the Violales or the Parietales. However, molecular phylogeny studies place the family in the Malpighiales as reflected in the Angiosperm Phylogeny Group (APG) classification, with 41 other families, where it is situated in the parietal clade of 11 families. Most of the species are found in three large genera, ''Viola'', ''Rinorea'' and ''Hybanthus''. The other genera are largely monotypic or oligotypic. The genera are grouped into four clades within the family. The species are largely tropical or subtropical but ''Viola'' has a number of species in temperate regions. Many genera have a very restricted distribution. Description Though the best-known genus, ''Viola'', is herbaceous, most species are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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