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Rippon Glacier
Rippon Glacier is a small glacier located in Kemp Land, East Antarctica. It is close east of Seaton Glacier, flowing southward into Edward VIII Ice Shelf. Discovery and naming Rippon Glacier was mapped from aerial photos taken by ANARE (Australian National Antarctic Research Expeditions) in 1956, and named for Sgt. Ralph Tudor Rippon, RAAF, airframe fitter at Mawson Station in 1959.Geographic Names Information System (GNIS) of the United States Geological SurveyRippon Glacier Accessed 22 May 2010.Gazetteer of the Australian Antarctic Data CentreRippon Glacier Accessed 22 May 2010. Weather conditions Just to the south of Rippon Glacier is a large valley formed by the Robert and Wilma Glaciers. These two glaciers, along with the Seaton and Rippon Glaciers, all flow into the King Edward Ice Shelf. To the west are the Napier Mountains, running northwest from Mount Elkins. Still further west are the Tula Mountains, beyond which the Beaver Glacier flows into Amundsen Bay. Collecti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctica
Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean, it contains the geographic South Pole. Antarctica is the fifth-largest continent, being about 40% larger than Europe, and has an area of . Most of Antarctica is covered by the Antarctic ice sheet, with an average thickness of . Antarctica is, on average, the coldest, driest, and windiest of the continents, and it has the highest average elevation. It is mainly a polar desert, with annual precipitation of over along the coast and far less inland. About 70% of the world's freshwater reserves are frozen in Antarctica, which, if melted, would raise global sea levels by almost . Antarctica holds the record for the lowest measured temperature on Earth, . The coastal regions can reach temperatures over in summer. Native species of animals include mites, nematodes, penguins, seals and tardigrades. Where vegetation o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amundsen Bay
Amundsen Bay, also known as Ice Bay, is a long embayment wide, close west of the Tula Mountains in Enderby Land, Antarctica. The bay was seen as a large pack-filled recession in the coastline by Sir Douglas Mawson on 14 January 1930. Seen by Captain Hjalmar Riiser-Larsen in charge of a Norwegian expedition during an airplane flight on 15 January and subsequently mapped nearer its true position by the Norwegians. The bay was mapped in detail by an Australian National Antarctic Research Expeditions party landed by aircraft in 1956 and another landed by launch from ''Thala Dan'' in February 1958. It was named by Mawson after Roald Amundsen, the Norwegian explorer who was first to reach the South Pole The South Pole, also known as the Geographic South Pole, Terrestrial South Pole or 90th Parallel South, is one of the two points where Earth's axis of rotation intersects its surface. It is the southernmost point on Earth and lies antipod .... See also * Adams Fjord * Ragged ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physcia Dubia
''Physcia'' is a genus of lichenized fungi in the family Physciaceae. The genus name means "inflated" or "sausage-like", referring to the form of the type species. According to a 2008 estimate, the widespread genus contains 73 species. Species *'' Physcia adscendens'' – hooded rosette lichen *'' Physcia aipolia'' – hoary rosette lichen *'' Physcia alba'' *'' Physcia albata'' *''Physcia atrostriata'' *'' Physcia austrocaesia'' *''Physcia austrostellaris'' *'' Physcia biziana'' *'' Physcia caesia'' – blue-gray rosette lichen, powder-back lichen *'' Physcia caesiopsis'' *''Physcia cinerea'' *''Physcia clementei'' *''Physcia convexa'' *''Physcia convexella'' *''Physcia crispa'' *''Physcia dakotensis'' *''Physcia decorticata'' *''Physcia dimidiata'' *''Physcia dubia'' *''Physcia erumpens'' *''Physcia halei'' *'' Physcia integrata'' *''Physcia jackii'' *''Physcia krogiae'' *'' Physcia littoralis'' *''Physcia magnussonii'' *''Physcia millegrana'' – mealy rosette lichen *''Physci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physcia Caesia
''Physcia caesia'', known colloquially as blue-gray rosette lichen and powder-back lichen, is a species of foliose lichenized fungus. First described by Georg Franz Hoffmann in 1784, it is common across much of Europe, North America and New Zealand, and more patchily distributed in South America, Asia, Australia and Antarctica. There are 2 subspecies: ''P. c. caesia'' and ''P. c. ventosa'', as well as a number of distinct forms and varieties. Molecular studies suggest that the species as currently defined may be polyphyletic. It is typically pale gray shading to darker gray in the center (though some forms are considerably darker), and grows in a small rosette, usually some across at maturity. It only rarely has apothecia, instead reproducing most often vegetatively via soredia, which are piled in round blue-gray mounds across the thallus's upper surface. It grows most often on rock—principally calcareous, but also basaltic and siliceous—and also occurs on bone, bark ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lecanora Expectans
''Lecanora'' is a genus of lichen commonly called rim lichens.Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, Lichens in the genus '' Squamarina'' are also called rim lichens. Members of the genus have roughly circular fruiting discs ( apothecia) with rims that have photosynthetic tissue similar to that of the nonfruiting part of the lichen body ( thallus). Other lichens with apothecia having margins made of thallus-like tissue are called lecanorine. ''Lecanora'' has a crustose thallus, trebouxoid photobiont, colourless ascospores and crystals in the amphitecium. It is in the family Lecanoraceae in the suborder Lecanorineae. Species : *''Lecanora campestris'' (Schaer.) Hue 1888 *''Lecanora conizaeoides'' Nyl. ex Cromb. 1885 *''Lecanora gangaleoides'', Nyl. 1872 *''Lecanora grantii'', H. Magn. 1932 *''Lecanora helicopis'', (Wahlenb. ex Ach.) Ach. 1814 *''Lecanora mellea'', W.A.Weber (1975) *''Lecanora muralis'', (Schreb.) Raben ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japewia Tornoensis
''Japewia'' is a genus of lichenized fungi in the family Ramalinaceae. The genus name of ''Japewia'' is in honour of Peter Wilfrid James (1930 - 2014), who was an English botanist (Mycology and Lichenology), who worked at the Natural History Museum, London. The genus was circumscribed by Tor Tønsberg Tor, TOR or ToR may refer to: Places * Tor, Pallars, a village in Spain * Tor, former name of Sloviansk, Ukraine, a city * Mount Tor, Tasmania, Australia, an extinct volcano * Tor Bay, Devon, England * Tor River, Western New Guinea, Indonesia ... in Lichenologist vol.22 (issue 3) on page 205 in 1990. References Ramalinaceae Lichen genera Lecanorales genera {{Lecanorales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Candelariella Flava
''Candelariella'' is a genus of bright yellow, ocher, or greenish yellow crustose or squamulose lichens in the family Candelariaceae. Members of the genus are commonly called eggyolk lichens, goldspeck lichens, or yolk lichens. The genus was circumscribed in 1894 by Swiss lichenologist Johannes Müller Argoviensis, with ''Candelariella vitellina'' assigned as the type species. Characteristics The key feature of ''Candelariella'' species are the distinct yellow apothecia. Although all species are very small, even the smallest can be identified by the lemon-yellow to orange-yellow discs. Most species have a yellow thallus, although ''Candelariella antennaria'' is one example with a grey thallus. Some species are pycnidiate. This genus will generally have all spot tests emerge as negative, although K tests may have an orange or reddish colour on some species' apothecia. Spore count between species varies from 8 to 32 simply or thinly septate spores. Spores often hold one to tw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caloplaca Citrina
''Caloplaca'' is a lichen genus comprising a number of distinct species. Members of the genus are commonly called firedot lichen, jewel lichen.Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, gold lichens, "orange lichens", but they are not always orange, as in the case of '' C. albovariegata''. The distribution of this lichen genus is worldwide, extending from Antarctica to the high Arctic. It includes a portion of northern North America and the Russian High Arctic. There are about thirty species of ''Caloplaca'' in the flora of the British Isles. An example species in this genus is ''Caloplaca saxicola'', a lichen with worldwide distribution including the Antarctic continent, Europe and northern North America including the northern reaches of the Canadian boreal forests. A new species of ''Caloplaca'', '' C. obamae'', the first species to be named in honor of Barack Obama, was discovered in 2007 on Santa Rosa Island in California and p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caloplaca Athallina
''Caloplaca'' is a lichen genus comprising a number of distinct species. Members of the genus are commonly called firedot lichen, jewel lichen.Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, gold lichens, "orange lichens", but they are not always orange, as in the case of '' C. albovariegata''. The distribution of this lichen genus is worldwide, extending from Antarctica to the high Arctic. It includes a portion of northern North America and the Russian High Arctic. There are about thirty species of ''Caloplaca'' in the flora of the British Isles. An example species in this genus is '' Caloplaca saxicola'', a lichen with worldwide distribution including the Antarctic continent, Europe and northern North America including the northern reaches of the Canadian boreal forests. A new species of ''Caloplaca'', '' C. obamae'', the first species to be named in honor of Barack Obama, was discovered in 2007 on Santa Rosa Island in California and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buellia Frigida
''Buellia frigida'' is a species of saxicolous lichen, saxicolous (rock-dwelling), crustose lichen in the family Caliciaceae. It was first species description, described from samples collected from the British National Antarctic Expedition of 1901–1904. It is endemism, endemic to maritime and continental Antarctica, where it is common and widespread, at altitudes up to about . The characteristic appearance of this lichen features shades of grey and black divided into small polygonal patterns. The crusts can generally grow up to in diameter (smaller sizes are more common), although neighbouring individuals may coalesce to form larger crusts. One of the defining characteristics of the lichen is a textured surface with deep cracks, creating the appearance of radiating . These lobes, bordered by shallower fissures, give the lichen a distinctive appearance and textured surface. In addition to its striking appearance, ''Buellia frigida'' shows adaptability to the harsh climate of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryum Urbanskyi
''Bryum urbanskyi'' is a species of moss belonging to the family Bryaceae Bryaceae is a family of mosses. Genera Genera include:Buck, William R. & Bernard Goffinet. 2000. "Morphology and classification of mosses", pages 71-123 ''in'' A. Jonathan Shaw & Bernard Goffinet (Eds.), ''Bryophyte Biology''. (Cambridge: Cambri .... It is native to Antarctica. References urbanskyi {{Bryophyte-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryum Pseudotriquetrum
''Ptychostomum pseudotriquetrum'', commonly known as marsh bryum, is a species of moss belonging to the family Bryaceae. It has cosmopolitan distribution. There are two subspecies, Bryum pseudotriquetrum var. pseudotriquetrum and Bryum pseudotriquetrum var. bimum. The moss has an acrocarpous growth form. The shoots form green to reddish or brown tufts and patches that can grow to be several centimetres tall. The stems are often reddish. The green to yellowish-green leaves are equally spaced along the stem, are 2–5 mm long, have a border of narrow reddish cells, and have a thick nerve that is usually shortly excurrent. Leaves are oblong-lanceolate to ovate-lanceolate. The leaves are contorted when dry and erect-spreading when wet. Most plants have leaves with a base that runs down onto the stem, although this feature is not always well-developed. The lower parts the stems are covered with a brownish red mat of rhizoids. The pendulous or inclined capsules are frequent, 2.5-4 m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
