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Maerl
Maerl (also rhodolith) is a collective name for non-geniculate coralline red algae with a certain growth habit. Maerl grows at a rate of c. 1 mm per year. It accumulates as unattached particles and forms extensive beds in suitable sublittoral sites.Vize, S.; Blake, C.; Hinojosa, G. and Maggs, C.A. 2003. The distribution and composition of maerl beds in Northern Ireland. ''PMNHS Newsletter'' No.13 p.26 The term maerl originally refers to the branched growth form of Lemoine (1910) and ''rhodolith'' is a sedimentological or genetic term for both the nodular and branched growth forms (Basso et al., 2015). Description In Europe maerl beds occur throughout the Mediterranean, along most of the Atlantic coast from Portugal to Norway, and in the English Channel, Irish Sea and North Sea. The distribution of maerl is dependent on water movement, light and salinity concentration.Wilson, S., Blake, C., Berges, J.A., and Maggs, C.A. (2004) "Environmental tolerances of free-living corall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maërl
Maerl (also rhodolith) is a collective name for non-geniculate coralline red algae with a certain growth habit. Maerl grows at a rate of c. 1 mm per year. It accumulates as unattached particles and forms extensive beds in suitable sublittoral sites.Vize, S.; Blake, C.; Hinojosa, G. and Maggs, C.A. 2003. The distribution and composition of maerl beds in Northern Ireland. ''PMNHS Newsletter'' No.13 p.26 The term maerl originally refers to the branched growth form of Lemoine (1910) and ''rhodolith'' is a sedimentological or genetic term for both the nodular and branched growth forms (Basso et al., 2015). Description In Europe maerl beds occur throughout the Mediterranean, along most of the Atlantic coast from Portugal to Norway, and in the English Channel, Irish Sea and North Sea. The distribution of maerl is dependent on water movement, light and salinity concentration.Wilson, S., Blake, C., Berges, J.A., and Maggs, C.A. (2004) "Environmental tolerances of free-living coral ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhodolith
Rhodoliths (from Greek for ''red rocks'') are colorful, unattached calcareous nodules, composed of crustose, benthic marine red algae that resemble coral. Rhodolith beds create biogenic habitat for diverse benthic communities. The rhodolithic growth habit has been attained by a number of unrelated coralline red algae, organisms that deposit calcium carbonate within their cell walls to form hard structures or nodules that resemble beds of coral. Rhodoliths do not attach themselves to the rocky seabed. Rather, they roll like tumbleweeds along the seafloor until they become too large in size to be mobilised by the prevailing wave and current regime. They may then become incorporated into a semi-continuous algal mat or form an algal build-up. While corals are animals that are both autotrophic (photosynthesize via their symbionts) or heterotrophic (feeding on plankton), rhodoliths produce energy solely through photosynthesis (i.e. they can only grow and survive in the photic zone of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ARRAN SEASCENES 013
Arran may refer to: Places * Isle of Arran, Scotland * Aran Islands, County Galway, Ireland * Arranmore, County Donegal, Ireland, also known in English as Aran Island * Arran (Caucasus), or Caucasian Albania, a historical region * Arran, Saskatchewan, Canada * Arran, Syria, a village in Aleppo Governorate, Syria * Arran–Elderslie, Ontario, Canada People Given name * Prince Arran, semi-legendary founder of Caucasian Albania *Arran Brindle (born 1981), English female cricketer *Arran Brown (born 1985), South African cyclist *Arran Fernandez (born 1995), British mathematician *Arran Gare (born 1948), Australian philosopher *Arran Hoffmann (1902–1990), German sports shooter *Arran Lee-Barrett (born 1984), English footballer *Arran Pene (born 1967), New Zealand rugby player *Arran Steele (born 1975), English cricketer *Arran Stephens (born 1944), Canadian entrepreneur, author and philanthropist Surname *Len Arran (born 1961), English composer of film scores Other names *Earl of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Ray
John Ray FRS (29 November 1627 – 17 January 1705) was a Christian English naturalist widely regarded as one of the earliest of the English parson-naturalists. Until 1670, he wrote his name as John Wray. From then on, he used 'Ray', after "having ascertained that such had been the practice of his family before him". He published important works on botany, zoology, and natural theology. His classification of plants in his ''Historia Plantarum'', was an important step towards modern taxonomy. Ray rejected the system of dichotomous division by which species were classified according to a pre-conceived, either/or type system , and instead classified plants according to similarities and differences that emerged from observation. He was among the first to attempt a biological definition for the concept of ''species'', as "a group of morphologically similar organisms arising from a common ancestor". Another significant contribution to taxonomy was his division of plants into those ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biological Conservation (journal)
''Biological Conservation'' is a peer-reviewed journal of conservation biology. The journal was established in 1968, and is published monthly by Elsevier. The current Editor-in-Chief is Vincent Devictor (Institute of Evolutionary Sciences of Montpellier) . The journal is affiliated with the Society for Conservation Biology The Society for Conservation Biology (SCB) is an 501(c)(3) non-profit international professional organization that is dedicated to conserving biodiversity. There are over 4,000 members worldwide, including students and those in related non-academ .... Abstracting and indexing The journal is abstracted and indexed in the following databases: References External links *{{Official website, http://www.journals.elsevier.com/biological-conservation/ Biology journals Elsevier academic journals Publications established in 1968 English-language journals Monthly journals ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aequipecten Opercularis
The queen scallop (''Aequipecten opercularis'') is a medium-sized species of scallop, an edible Marine (ocean), marine bivalve mollusk in the family Pectinidae, the scallops. It is found in the northeast Atlantic and is important in fisheries. Description At about in size, this is one of the smaller scallop species which are commercially exploited. The shell of this species is sometimes quite colourful, and it is also thin and brittle. It has about twenty radiating umbo (bivalve), umbones. The left Valve (mollusc), valve is slightly more convex than the right one. One auricle of the right valve is larger than the other which creates a notch near the hinge used by the modified foot in young scallops to spin byssal threads. Older scallops are free swimming. Right and left valve of the same specimen: File:Aequipecten opercularis 01.jpg, Right valve File:Aequipecten opercularis 02.jpg, Left valve Life habits The queen scallop feeds on a diet of plankton, and is commonly found ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scallops
Scallop () is a common name that encompasses various species of marine bivalve mollusks in the taxonomic family Pectinidae, the scallops. However, the common name "scallop" is also sometimes applied to species in other closely related families within the superfamily Pectinoidea, which also includes the thorny oysters. Scallops are a cosmopolitan family of bivalves found in all of the world's oceans, although never in fresh water. They are one of the very few groups of bivalves to be primarily "free-living", with many species capable of rapidly swimming short distances and even migrating some distance across the ocean floor. A small minority of scallop species live cemented to rocky substrates as adults, while others attach themselves to stationary or rooted objects such as seagrass at some point in their lives by means of a filament they secrete called a byssal thread. The majority of species, however, live recumbent on sandy substrates, and when they sense the presence of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pollachius Pollachius
''Pollachius pollachius'' (Atlantic or European pollock) is a species of marine fish in the ''Pollachius'' genus. FAO uses the English name pollack for this species. Together with ''Pollachius virens'', it may also be referred to as pollock. Other names include European pollock, ''lieu jaune'', lythe and in the Isle of Man, callig . It is common in the north-eastern parts of the Northern Atlantic, including the Bay of Biscay and North Sea. Adults can grow up to and weigh up to , although more commonly their maximum length is . Ecology and life history Pollack are fast-growing and relatively short-lived. The maximum reported age is 15 years. They are said to spawn offshore, although their spawning grounds are poorly known; a study of a fjord population in Norway suggested local spawning. Pollack are benthopelagic, that is, they live near the sea floor. They seem to be relatively sedentary. Fisheries Pollack is of value to fisheries, although it mainly represents bycatch. Landin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pollack (fish)
Pollock or pollack (pronounced ) is the common name used for either of the two species of North Atlantic marine fish in the genus ''Pollachius''. ''Pollachius pollachius'' is referred to as pollock in North America, Ireland and the United Kingdom, while ''Pollachius virens'' is usually known as saithe or coley in Great Britain and Ireland (derived from the older name coalfish). Other names for ''P. pollachius'' include the Atlantic pollock, European pollock, ''lieu jaune'', and lythe; while ''P. virens'' is also known as Boston blue (distinct from bluefish), silver bill, or saithe. Species The recognized species in this genus are: * ''Pollachius pollachius'' (Linnaeus, 1758) (pollack) * ''Pollachius virens'' (Linnaeus, 1758) (coalfish) Description Both species can grow to and can weigh up to . ''P. virens'' has a strongly defined, silvery lateral line running down the sides. Above the lateral line, the colour is a greenish black. The belly is white, while '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pollachius Virens
The saithe ( or ) (''Pollachius virens'') is a species of marine fish in the Pollock genus ''Pollachius''. Together with '' P. pollachius'', it is generally referred to in the United States as pollock. Other names include the Boston blue (separate from bluefish), coalfish/coley, and saithe in the UK, where the young fish are called podleys in Scotland and northern England. Description This species can be separated from ''P. pollachius'' by looking at the relative lengths of the upper and lower jaws. ''P. pollachius'' has a longer underslung lower jaw while ''P. virens'' has approximately equal upper and lower jaw lengths. This gives a very different profile to the head. In general, ''P. pollachius'' is a brown or golden colour with a dark back while ''P. virens'' is bright silver with a very dark green back. ''P. virens'' generally appears to have relatively smaller eyes. The lateral line of ''P. pollachius'' has a noticeable kink over the pectoral fins while that of ''P. viren ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saithe
The saithe ( or ) (''Pollachius virens'') is a species of marine fish in the Pollock genus ''Pollachius''. Together with '' P. pollachius'', it is generally referred to in the United States as pollock. Other names include the Boston blue (separate from bluefish), coalfish/coley, and saithe in the UK, where the young fish are called podleys in Scotland and northern England. Description This species can be separated from ''P. pollachius'' by looking at the relative lengths of the upper and lower jaws. ''P. pollachius'' has a longer underslung lower jaw while ''P. virens'' has approximately equal upper and lower jaw lengths. This gives a very different profile to the head. In general, ''P. pollachius'' is a brown or golden colour with a dark back while ''P. virens'' is bright silver with a very dark green back. ''P. virens'' generally appears to have relatively smaller eyes. The lateral line of ''P. pollachius'' has a noticeable kink over the pectoral fins while that of ''P. virens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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