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Pink Lake
A pink lake is a lake that has a red or pink colour. This is often caused by the presence of salt-tolerant algae that produces carotenoids, such as ''Dunaliella salina'', usually in conjunction with specific bacteria, which may vary from lake to lake. Causes Pink lakes arise from a combination of factors, which include climate and hydrology of the continent beneath them, in particular the level of salinity. The orange/pink colour of salt lakes across the world has often been attributed to the green alga ''Dunaliella salina'', but other work has shown that bacteria or archaea are also involved. Alga ''Dunaliella salina'' is the most halophilic (salt-tolerant) alga known and can grow in salinity as high as 35% NaCl (in comparison to seawater, which contains approximately 3% NaCl). The single-celled green alga plays a key role in primary production in hypersaline environments around the world. At high salinity, temperature and light, this alga accumulates the red caroteno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Hillier 2 Middle Island Recherche Archipelago NR IV-2011
A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much larger oceans, they do form part of the Earth's water cycle. Lakes are distinct from lagoons, which are generally coastal parts of the ocean. Lakes are typically larger and deeper than ponds, which also lie on land, though there are no official or scientific definitions. Lakes can be contrasted with rivers or streams, which usually flow in a channel on land. Most lakes are fed and drained by rivers and streams. Natural lakes are generally found in mountainous areas, rift zones, and areas with ongoing glaciation. Other lakes are found in endorheic basins or along the courses of mature rivers, where a river channel has widened into a basin. Some parts of the world have many lakes formed by the chaotic drainage patterns left over from the last ic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Retba
Lac Rose (meaning Pink Lake) lies north of the Cap Vert peninsula of Senegal, some 30 km (18 miles) north-east of the capital, Dakar, in northwest Africa. It is named for its pink waters caused by '' Dunaliella salina'' algae and is known for its high salt content, up to 40% in some areas. Description The lake is separated from the Atlantic Ocean only by a narrow corridor of dunes, and is named for its pink waters, which are caused by '' Dunaliella salina'' algae. The algae produce a red pigment to help them absorb sunlight, which gives them energy to create ATP. The color is particularly visible during the dry season (from November to May) and less visible during the rainy season (June to October). Magenta coloured samphire bushes flourish in the lake’s white sandbanks; the sand dunes are terra-cotta-coloured. Salt The lake is known for its high salt content (up to 40% in some areas), which is mainly due to the ingress of seawater and its subsequent evaporation. Like ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salmon (color)
Salmon is a range of pinkish- orange to light pink colors, named after the color of salmon flesh. The first recorded use of ''salmon'' as a color name in English was in 1776.Maerz and Paul ''A Dictionary of Color'' New York:1930 McGraw-Hill Page 203; Color Sample of Salmon: Page 43 Plate 10 Color Sample A7 The actual color of salmon flesh varies from almost white to light orange, depending on their levels of the carotenoid astaxanthin due to how rich a diet of krill and shrimp the fish feeds on; salmon raised on fish farms are given non-synthetic or artificial coloring in their food. __TOC__ Variations of salmon Light salmon resembles the color salmon, but is lighter, not to be confused with dark salmon, which resembles salmon pink but is darker. Salmon pink (or ''salmon'' in Crayola crayons) was introduced by Crayola in 1949. See the List of Crayola crayon colors. Dark salmon resembles the color salmon, but is darker. Like the web colors ''light salmon'' and ''sal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dunaliella
''Dunaliella'' is a single-celled, photosynthetic green alga, that is characteristic for its ability to outcompete other organisms and thrive in hypersaline environments. It is mostly a marine organism, though there are a few freshwater species that tend to be more rare. It is a genus in which certain species can accumulate relatively large amounts of β-carotenoids and glycerol in very harsh growth conditions consisting of high light intensities, high salt concentrations, and limited oxygen and nitrogen levels, yet is still very abundant in lakes and lagoons all around the world. It becomes very complicated to distinguish and interpret species of this genus on simply a morphological and physiological level due to the organism's lack of cell wall that allows it to have malleability and change shape and its different pigments that allows it to change colours depending on the environmental conditions. Molecular phylogeny analysis has become a critical protocol in discovering the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Geographic
Australian Geographic is a media business that produces the ''Australian Geographic'' magazine, ''DMag'' magazine, specialist book titles, travel guides, diaries and calendars and online media. It published editions of the Australian Encyclopaedia. It previously operated the Australian Geographic retail chain stores and Australian Geographic Travel and Australian Geographic Adventures. ''Australian Geographic'' magazine, originally titled ''Dick Smith's Australian Geographic'', is a bi-monthly geographical journal created by Dick Smith in 1986. The magazine focuses mainly on stories about Australia, or about Australian people in other countries. The six editions published each year are available by subscription and on newsstands. They include posters or sheet maps in each edition, as well as photographs and detailed technical illustrations. Australian Geographic also has a website that includes the entire magazine digital archive. Each year, a portion of the profits is pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molecular Biologist
Molecular biology is the branch of biology that seeks to understand the molecular basis of biological activity in and between cells, including biomolecular synthesis, modification, mechanisms, and interactions. The study of chemical and physical structure of biological macromolecules is known as molecular biology. Molecular biology was first described as an approach focused on the underpinnings of biological phenomena - uncovering the structures of biological molecules as well as their interactions, and how these interactions explain observations of classical biology. In 1945 the term molecular biology was used by physicist William Astbury. In 1953 Francis Crick, James Watson, Rosalind Franklin, and colleagues, working at Medical Research Council unit, Cavendish laboratory, Cambridge (now the MRC Laboratory of Molecular Biology), made a double helix model of DNA which changed the entire research scenario. They proposed the DNA structure based on previous research done by Ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Australia
Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to the south, the Northern Territory to the north-east, and South Australia to the south-east. Western Australia is Australia's largest state, with a total land area of . It is the second-largest country subdivision in the world, surpassed only by Russia's Sakha Republic. the state has 2.76 million inhabitants percent of the national total. The vast majority (92 percent) live in the south-west corner; 79 percent of the population lives in the Perth area, leaving the remainder of the state sparsely populated. The first Europeans to visit Western Australia belonged to the Dutch Dirk Hartog expedition, who visited the Western Australian coast in 1616. The first permanent European colony of Western Australia occurred following ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Middle Island (Western Australia)
Middle Island (French: Île du Milieu) is an island off the south coast of Western Australia in the Recherche Archipelago, around south-east of Esperance. It is known for its pink lake, Lake Hillier. Goose Island lies just adjacent to the north. History The island was named by d'Entrecasteaux. Matthew Flinders, along with his botanist Robert Brown, visited in January 1802 and Flinders climbed the peak (subsequently named Flinders Peak) to survey the surrounding islands. John Thistle, '' Investigator's'' Master, collected some salt samples from the pink lake later known as Lake Hillier. Philip Parker King anchored off the island in 1818 and lost two anchors that were later recovered in 1973. Sealers operated from the island throughout the 1800s. Bay whaling operations were conducted here in the 1870s and, possibly, as early as the 1840s. According to legend, pirate Black Jack Anderson, based himself on Middle Island sometime after his arrival at King George Sound ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Hillier
Lake Hillier is a salt lake, saline lake on the edge of Middle Island (Western Australia), Middle Island, the largest of the islands and islets that make up the Recherche Archipelago in the Goldfields-Esperance region, off the south coast of Western Australia. It is particularly notable for its pink colour. A long and thin shore divides the Southern Ocean (by some definitions, the Indian Ocean) from the lake. Description Lake Hillier is about in length by about in width. The lake is surrounded by a rim of sand and a dense woodland of paperbark and eucalyptus trees with a narrow strip of sand dunes covered by vegetation separating its northern edge from the northern coast of Middle Island. The most notable feature of the lake is its pink, vibrant colour. The vibrant colour is permanent, and does not alter when the water is taken in a container. The pink colour is believed to be due to the presence of the organism, ''Dunaliella salina''. The Extreme Microbiome Project, part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salinibacter Ruber
''Salinibacter ruber'' is an extremely halophilic red bacterium, first found in Spain in 2002. Habitat ''Salinibacter ruber'' was found in saltern crystallizer ponds in Alicante and Mallorca, Spain in 2002 by Antón et al. This environment has very high salt concentrations, and ''Salinibacter ruber'' itself cannot grow at below 15% salt concentration, with an ideal concentration between 20 and 30%. It has also been found in pink lakes in Australia. This bacterium is notable for its halophilic lifestyle, a trait exhibited primarily by members of Archaea. In general, bacteria do not play a large role in microbial communities of hypersaline brines at or approaching NaCl saturation. However, with the discovery of ''S. ruber'', this belief was challenged. It was found that ''S. ruber'' made up from 5% to 25% of the total prokaryotic community of the Spanish saltern ponds. ca: ''Salinibacter ruber'' was found in saltern crystallizer ponds in Alicante and Mallorca, Spain in 20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cell Membrane
The cell membrane (also known as the plasma membrane (PM) or cytoplasmic membrane, and historically referred to as the plasmalemma) is a biological membrane that separates and protects the interior of all cells from the outside environment (the extracellular space). The cell membrane consists of a lipid bilayer, made up of two layers of phospholipids with cholesterols (a lipid component) interspersed between them, maintaining appropriate membrane fluidity at various temperatures. The membrane also contains membrane proteins, including integral proteins that span the membrane and serve as membrane transporters, and peripheral proteins that loosely attach to the outer (peripheral) side of the cell membrane, acting as enzymes to facilitate interaction with the cell's environment. Glycolipids embedded in the outer lipid layer serve a similar purpose. The cell membrane controls the movement of substances in and out of cells and organelles, being selectively permeable to i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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