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Mosquito Fern
''Azolla'' (mosquito fern, duckweed fern, fairy moss, water fern) is a genus of seven species of aquatic ferns in the family Salviniaceae. They are extremely reduced in form and specialized, looking nothing like other typical ferns but more resembling duckweed or some mosses. ''Azolla filiculoides'' is one of just two fern species for which a reference genome has been published. It is believed that this genus grew so prolifically during the Eocene (and thus absorbed such a large amount of carbon) that it triggered a global cooling event that has lasted to the present. Azolla is considered an invasive plant in wetlands, freshwater lakes and ditches. It can alter aquatic ecosystems and biodiversity substantially. Species Section ''Rhizosperma'' *'' Azolla imbricata'' *'' Azolla nilotica'' *''Azolla pinnata'' Section ''Azolla'' *'' Azolla cristata '' (this name takes priority over '' Azolla caroliniana'' ) *''Azolla filiculoides'' *'' Azolla rubra'' : Sources: At least ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maastrichtian
The Maastrichtian () is, in the ICS geologic timescale, the latest age (uppermost stage) of the Late Cretaceous Epoch or Upper Cretaceous Series, the Cretaceous Period or System, and of the Mesozoic Era or Erathem. It spanned the interval from . The Maastrichtian was preceded by the Campanian and succeeded by the Danian (part of the Paleogene and Paleocene). The Cretaceous–Paleogene extinction event (formerly known as the Cretaceous– Tertiary extinction event) occurred at the end of this age. In this mass extinction, many commonly recognized groups such as non-avian dinosaurs, plesiosaurs and mosasaurs, as well as many other lesser-known groups, died out. The cause of the extinction is most commonly linked to an asteroid about wide colliding with Earth, ending the Cretaceous. Stratigraphic definitions Definition The Maastrichtian was introduced into scientific literature by Belgian geologist André Hubert Dumont in 1849, after studying rock strata of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquatic Ecosystem
An aquatic ecosystem is an ecosystem formed by surrounding a body of water, in contrast to land-based terrestrial ecosystems. Aquatic ecosystems contain communities of organisms that are dependent on each other and on their environment. The two main types of aquatic ecosystems are marine ecosystems and freshwater ecosystems. Freshwater ecosystems may be lentic (slow moving water, including pools, ponds, and lakes); lotic (faster moving water, for example streams and rivers); and wetlands (areas where the soil is saturated or inundated for at least part of the time). Types Marine ecosystems Marine coastal ecosystem Marine surface ecosystem Freshwater ecosystems Lentic ecosystem (lakes) Lotic ecosystem (rivers) Wetlands Functions Aquatic ecosystems perform many important environmental functions. For example, they recycle nutrients, purify water, attenuate floods, recharge ground water and provide habitats for wildlife. Aquatic ecosystems are also used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Plant Names Index
The International Plant Names Index (IPNI) describes itself as "a database of the names and associated basic bibliographical details of seed plants, ferns and lycophytes." Coverage of plant names is best at the rank of species and genus. It includes basic bibliographical details associated with the names. Its goals include eliminating the need for repeated reference to primary sources for basic bibliographic information about plant names. The IPNI also maintains a list of standardized author abbreviations. These were initially based on Brummitt & Powell (1992), but new names and abbreviations are continually added. Description IPNI is the product of a collaboration between The Royal Botanic Gardens, Kew ( Index Kewensis), The Harvard University Herbaria (Gray Herbarium Index), and the Australian National Herbarium ( APNI). The IPNI database is a collection of the names registered by the three cooperating institutions and they work towards standardizing the information. The st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azolla Rubra
''Azolla rubra,'' known commonly as red azolla and Pacific azolla is a species of fern native to Australia and New Zealand. In New Zealand, it may also be known by its Māori names , , and . Distribution ''Azolla rubra'' is found in Australia and New Zealand. Its range is thought to extend to Papua New Guinea, Indonesia and Japan. New Zealand Found on the North and South Islands of New Zealand, as well as Raoul Island in the Kermadecs. Habitat Forms extensive red mats on slow moving bodies of water such as streams, lakes, ponds and swamps. May also occur on man-made water bodies such as farm pond A pond is an area filled with water, either natural or artificial, that is smaller than a lake. Defining them to be less than in area, less than deep, and with less than 30% emergent vegetation helps in distinguishing their ecology from tha ...s, drains, ditches, dams and cattle troughs. References Salviniales {{Polypodiidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azolla Caroliniana
''Azolla cristata '', the Carolina mosquitofern, Carolina azolla or water velvet, is a species of ''Azolla'' native to the Americas, in eastern North America from southern Ontario southward, and from the east coast west to Wisconsin and Texas, and in the Caribbean, and in Central and South America from southeastern Mexico (Chiapas) south to northern Argentina and Uruguay. It is a freshwater aquatic fern, with scale-like fronds 5–10 mm long, green to reddish, most often reddish in strong light and in winter. They are covered in tiny protuberances called trichomes that give it the appearance of velvet.Flora of North America''Azolla cristata ''/ref>Aquatic Plant Information System It is able to fix nitrogen from the air by means of symbiotic cyanobacteria. It can survive winter water temperatures of 5 °C(41 degrees Fahrenheit), with optimum summer growth between 25–30 °C. (77-86 degrees Fahrenheit) NESACPackage of Practice for Azolla/ref> Identification The o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azolla Cristata
''Azolla cristata '', the Carolina mosquitofern, Carolina azolla or water velvet, is a species of ''Azolla'' native to the Americas, in eastern North America from southern Ontario southward, and from the east coast west to Wisconsin and Texas, and in the Caribbean, and in Central and South America from southeastern Mexico (Chiapas) south to northern Argentina and Uruguay. It is a freshwater aquatic fern, with scale-like fronds 5–10 mm long, green to reddish, most often reddish in strong light and in winter. They are covered in tiny protuberances called trichomes that give it the appearance of velvet.Flora of North America''Azolla cristata ''/ref>Aquatic Plant Information System It is able to fix nitrogen from the air by means of symbiotic cyanobacteria. It can survive winter water temperatures of 5 °C(41 degrees Fahrenheit), with optimum summer growth between 25–30 °C. (77-86 degrees Fahrenheit) NESACPackage of Practice for Azolla/ref> Identification The o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azolla Filiculoides Drawing
''Azolla'' (mosquito fern, duckweed fern, fairy moss, water fern) is a genus of seven species of aquatic ferns in the family Salviniaceae. They are extremely reduced in form and specialized, looking nothing like other typical ferns but more resembling duckweed or some mosses. ''Azolla filiculoides'' is one of just two fern species for which a reference genome has been published. It is believed that this genus grew so prolifically during the Eocene (and thus absorbed such a large amount of carbon) that it triggered a global cooling event that has lasted to the present. Azolla is considered an invasive plant in wetlands, freshwater lakes and ditches. It can alter aquatic ecosystems and biodiversity substantially. Species Section ''Rhizosperma'' *'' Azolla imbricata'' *''Azolla nilotica'' *''Azolla pinnata'' Section ''Azolla'' *''Azolla cristata '' (this name takes priority over ''Azolla caroliniana'' ) *''Azolla filiculoides'' *''Azolla rubra'' : Sources: At least si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azolla Pinnata
''Azolla pinnata'' is a species of fern known by several common names, including mosquitofern, feathered mosquitofern and water velvet. It is native to much of Africa, Asia (Brunei Darussalam, China, India, Japan, Korea, and the Philippines) and parts of Australia. It is an aquatic plant, it is found floating upon the surface of the water. It grows in quiet and slow-moving water bodies because swift currents and waves break up the plant. At maximum growth rate, it can double its biomass in 1.9 days, with most strains attaining such growth within a week under optimal conditions. ''A''. ''pinnata'' is a small fern with a triangular stem measuring up to 2.5 centimeters in length that floats on the water. The stem bears many rounded or angular overlapping leaves each 1 or 2 millimeters long. They are green, blue-green, or dark red in color and coated in tiny hairs, giving them a velvety appearance. The hairs make the top surface of the leaf water-repellent, keeping the plant afloat ev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mett
Mett is a preparation of minced (ground) raw pork seasoned with salt and black pepper that is popular in Germany and Poland. It is frequently spread on halves of a bread roll, with raw onion optionally on top. Since the 1950s Mett has also been offered as a buffet dish decoratively formed into the shape of a hedgehog, with raw onion "spines". German law forbids mett being sold with a fat content exceeding 35%. Description The name is derived from Low German ''mett'' for "chopped pork meat without bacon", or Old Saxon ''meti'' for "food". It is also known as Hackepeter ( Northern Germany, Eastern Germany, Bavaria and Berlin). It consists of minced pork meat, normally seasoned with salt and black pepper, regionally also with garlic or caraway, and eaten raw. It is also permitted to add chopped onion, in which case and it is known as ''Zwiebelmett'' (onion Mett). Legally, German Mett is not allowed to contain more than 35% fat. Unless pre-packaged, the German ''Lebensmittelhygiene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Decne
Joseph Decaisne (7 March 1807 – 8 January 1882) was a French botanist and agronomist. He became an ''aide-naturaliste'' to Adrien-Henri de Jussieu (1797-1853), who served as the chair of rural botany. It was during this time that he began to study plants brought back by various travelers like those of Victor Jacquemont (1801-1832) from Asia. Decaisne used applied research, most notably on the agronomy of the madder, the yam and the ramie. He was also interested in algae. Biography Although born in Brussels, Belgium, he exercised his activity exclusively in Paris. He entered in 1824 as a gardener at the ''Muséum national d'histoire naturelle'' (French museum of natural history) and became, in 1832, head of the ''carré des semis'' section. He also worked at the '' Jardin des Plantes'' and collaborated with Asa Gray. In 1847 he chaired Statistical Agriculture department in the College de France. In 1850, Decaisne followed Charles-François Brisseau de Mirbel (1776-1854) as the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
