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Pringlea
''Pringlea antiscorbutica'', commonly known as Kerguelen cabbage, is a flowering plant and the sole member of the monotypic genus ''Pringlea'' in the family (biology), family Brassicaceae. Its common name comes from the archipelago of its discovery, the Kerguelen Islands, and its genus, generic name derives from Sir John Pringle (physician), John Pringle, president of the Royal Society at the time of its discovery by Captain James Cook's Surgeon, William Anderson (naturalist), William Anderson in 1776. Despite its appearance and edibility, it is not related to the common plantago major, broadleaf plantain. Description ''Pringlea antiscorbutica'' has leaf rosettes of up to 45 cm in diameter, that sit on top of perennial half woody stems of about 15 cm thick and up to 1 m long. The erect flowering stems remain on the plants for many years. Distribution ''Pringlea antiscorbutica'' grows on the remote Heard Island and McDonald Islands, Crozet Islands, Crozet, Prince Ed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pringlea Antiscorbutica Mayes Fake
''Pringlea antiscorbutica'', commonly known as Kerguelen cabbage, is a flowering plant and the sole member of the monotypic genus ''Pringlea'' in the family Brassicaceae. Its common name comes from the archipelago of its discovery, the Kerguelen Islands, and its generic name derives from Sir John Pringle, president of the Royal Society at the time of its discovery by Captain James Cook's Surgeon, William Anderson in 1776. Despite its appearance and edibility, it is not related to the common broadleaf plantain. Description ''Pringlea antiscorbutica'' has leaf rosettes of up to 45 cm in diameter, that sit on top of perennial half woody stems of about 15 cm thick and up to 1 m long. The erect flowering stems remain on the plants for many years. Distribution ''Pringlea antiscorbutica'' grows on the remote Heard Island and McDonald Islands, Crozet, Prince Edward and Kerguelen Islands. The ancestor of ''P. antiscorbutica'' probably migrated from South America s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calycopteryx Mosleyi
''Calycopteryx'' is a genus of stilt-legged fly with only a single recognized species, the ''Calycopteryx mosleyi'' (sometimes misspelled ''moseleyi'') native to the Kerguelen Islands and Heard Island of the south Indian Ocean, first described by Alfred Edwin Eaton in 1875. It is characterized by its tiny size and flightlessness. Evolution and taxonomy ''Calycopteryx mosleyi'' has wings that have shrunk and turned into a fat reserve, probably due to the strong winds of the Kerguelen archipelago that make flight for tiny insects almost impossible. This could indicate that they migrated from elsewhere to the islands they are currently found and evolved there separately from the other species of the family Micropezidae. They are the only recognized species of the genus. Two subspecies are recognized: * ''Calycopteryx mosleyi mosleyi'' ( Eaton, 1875) * ''Calycopteryx mosleyi minor'' ( Enderlein, 1909) Description These tiny flies can reach 7 mm in length and have a greenish-br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heard Island And McDonald Islands
The Territory of Heard Island and McDonald Islands (HIMI) is an Australian States and territories of Australia, external territory comprising a volcanic group of mostly barren Antarctic islands, about two-thirds of the way from Madagascar to Antarctica. The group's overall land area is and it has of coastline. Discovered in the mid-19th century, the islands lie on the Kerguelen Plateau in the Indian Ocean and have been an Australian territory since 1947. Heard Island and McDonald Islands contain Australia's only two active volcanoes. The summit of one, Mawson Peak, is higher than any mountain in all other Australian states, territories or land claim, claimed territories, except Dome Argus, Mount McClintock and Mount Menzies in the Australian Antarctic Territory. This Antarctic territory is a land claim unrecognised by most other countries, meaning that Mawson Peak is the highest mountain with undisputed Australian Westphalian sovereignty, sovereignty. The islands are among th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brassicaceae
Brassicaceae () or (the older but equally valid) Cruciferae () is a medium-sized and economically important Family (biology), family of flowering plants commonly known as the mustards, the crucifers, or the cabbage family. Most are herbaceous plants, while some are shrubs. The leaves are simple (although are sometimes deeply incised), lack stipules, and appear alternately on stems or in Rosette (botany), rosettes. The inflorescences are terminal and lack bracts. The flowers have four free sepals, four free alternating petals, two shorter free stamens and four longer free stamens. The fruit has seeds in rows, divided by a thin wall (or septum). The family contains 372 genera and 4,060 accepted species. The largest genera are ''Draba'' (440 species), ''Erysimum'' (261 species), ''Lepidium'' (234 species), ''Cardamine'' (233 species), and ''Alyssum'' (207 species). , it was divided into two subfamilies, Brassicoideae and Aethionemoideae. The family contains the cruciferous vegetable ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Micropezidae
The Micropezidae are a moderate-sized family of acalyptrate muscoid flies in the insect order Diptera, comprising about 500 species in about 50 genera and five subfamilies worldwide, (except New Zealand and Macquarie Island).McAlpine, D.K. (1998). Review of the Australian stilt flies (Diptera: Micropezidae) with a phylogenetic analysis of the family. ''Invertebrate Taxonomy'' 12:55–134. (with key to Australian species) They are most diverse in tropical and subtropical habitats, especially in the Neotropical Region. Insects in this family are commonly called stilt-legged flies, after their characteristically long legs. The fore legs are markedly smaller than the other pairs. Mostly, they are long-bodied, often black flies, usually with infuscated (darkened) wings. Wings are reduced in the genera '' Calycopteryx'' and entirely absent in the ant-like '' Badisis ambulans''. Description For terms see Morphology of Diptera Very slender, small to large (3–16 mm) flies, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kerguelen Islands
The Kerguelen Islands ( or ; in French commonly ' but officially ', ), also known as the Desolation Islands (' in French), are a group of islands in the subantarctic, sub-Antarctic region. They are among the Extremes on Earth#Remoteness, most isolated places on Earth, with the closest territory being the Heard Island and McDonald Islands territory of Australia located at roughly , and the nearest inhabited territory being Madagascar at more than in distance. The islands, along with Adélie Land, the Crozet Islands, Île Amsterdam, Amsterdam and Île Saint-Paul, Saint Paul islands, and France's Scattered Islands in the Indian Ocean, are part of the French Southern and Antarctic Lands and are administered as a separate district. The islands constitute one of the two exposed parts of the Kerguelen Plateau (the other being Heard Island and the McDonald islands), a large igneous province mostly submerged in the southern Indian Ocean. The main island, Grande Terre, is in area, about ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Anderson (botanist)
Thomas Anderson FLS (26 February 1832 – 26 October 1870) was a Scottish botanist who worked in India. He was involved in research on cinchona cultivation in India. Life Anderson was born in Edinburgh in 1832. He studied medicine at the University of Edinburgh, graduating with an MD in 1853. While at University he became interested in botany, and earned a gold medal for the best local collection of plants, and assisted in arranging the Indian herbarium. In 1854 he entered the Bengal medical service, and went to Calcutta. Subsequently, he went to Delhi, where he was actively engaged during the mutiny, returning to Calcutta in 1858. His health failing, he came home, and, the steamer being detained at Aden for some days, he made collections of the plants of that region, upon which he based his ''Florula Adenensis'' (1860). About this time he returned to India, taking temporary charge of the Calcutta Botanic Garden during the absence of Dr Thomas Thomson, whom he afterwards su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyamine
A polyamine is an organic compound having two or more amino groups. Alkyl polyamines occur naturally, but some are synthetic. Alkylpolyamines are colorless, hygroscopic, and water soluble. Near neutral pH, they exist as the ammonium derivatives. Most aromatic polyamines are crystalline solids at room temperature. Natural polyamines Low-molecular-weight linear polyamines are found in all forms of life. The principal examples are the triamine spermidine and the tetraamine spermine. They are structurally and biosynthetically related to the diamines putrescine and cadaverine. Polyamine metabolism is regulated by the activity of the enzyme ornithine decarboxylase (ODC). Polyamines are found in high concentrations in the mammalian brain. File:Spermidine-2D-skeletal.svg, spermidine File:Spermine.svg, spermine Synthetic polyamines Ethyleneamines are a commercially-important class of synthetic polyamines with ethylene ( linkages); global production capacity was estimated at 385,00 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polar Biology
''Polar Biology'' is a monthly peer-reviewed scientific journal covering the biology of the polar regions. It is published by Springer Science+Business Media. According to the ''Journal Citation Reports'', the journal has a 2015 impact factor of 1.711. References External links * Biology journals Ecology journals Academic journals established in 1983 Monthly journals English-language journals {{ecology-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seal Meat
Seal meat is the flesh, including the blubber and organs, of Pinniped, seals used as food for humans or other animals. It is prepared in numerous ways, often being hung and dried before consumption. Historically, it has been eaten in many parts of the world. Practice of seal consumption by humans continues today in Japan, Canada and Norway. Nutritional value Seal blubber and meat was studied to help understand the nutritional composition. Two species were evaluated by the Department of Biology of the University of Bergen and the National Institute of Nutrition and Seafood Research. The species were the hooded seal (''Cystophora cristata'') and harp seal (''Phagophilus groenlandicus''). The specimens used in the study were taken from Greenland's West Ice. Seal meat in general is lean, containing less than 2% fat. This fat is mostly MUFAs, long- and very long chain omega-3 PUFAs. Also, the meat is high in protein and has an amino acid composition that is well balanced. The study ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potassium
Potassium is a chemical element; it has Symbol (chemistry), symbol K (from Neo-Latin ) and atomic number19. It is a silvery white metal that is soft enough to easily cut with a knife. Potassium metal reacts rapidly with atmospheric oxygen to form flaky white potassium peroxide in only seconds of exposure. It was first isolated from potash, the ashes of plants, from which its name derives. In the periodic table, potassium is one of the alkali metals, all of which have a single valence electron in the outer electron shell, which is easily removed to create cation, an ion with a positive charge (which combines with anions to form salts). In nature, potassium occurs only in ionic salts. Elemental potassium reacts vigorously with water, generating sufficient heat to ignite hydrogen emitted in the reaction, and burning with a lilac-flame color, colored flame. It is found dissolved in seawater (which is 0.04% potassium by weight), and occurs in many minerals such as orthoclase, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
