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Milford Haven Waterway SSSI
Milford Haven Waterway, is a Site of Special Scientific Interest (SSSI) on Milford Haven Waterway in Pembrokeshire, South Wales, designated since 2002. The site is protected for a wide range of reasons, including its geology, marine environment and ecosystems, and to protect a diversity of flora and fauna. Geology Milford Haven Waterway is an exceptional example of a ria (a system of valleys drowned by post-glacial rise in sea level) that consists of a number of estuaries, embayments and inlets. Cliffs in the southern regions are mostly developed in rocks of the Old Red Sandstone, whereas the geology of the upper reaches is relatively complex. In the outer part of Milford Haven vertical cliffs are common but elsewhere the cliff profile is often composed of a slope with a vertical rock face below it, the slope being a remnant from an earlier landform - a river valley - that has not yet been eroded by the sea. In many locations stony clays mantle the middle section of the cliff prof ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Site Of Special Scientific Interest
A Site of Special Scientific Interest (SSSI) in Great Britain or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland is a conservation designation denoting a protected area in the United Kingdom and Isle of Man. SSSI/ASSIs are the basic building block of site-based nature conservation legislation and most other legal nature/geological conservation designations in the United Kingdom are based upon them, including national nature reserves, Ramsar sites, Special Protection Areas, and Special Areas of Conservation. The acronym "SSSI" is often pronounced "triple-S I". Selection and conservation Sites notified for their biological interest are known as Biological SSSIs (or ASSIs), and those notified for geological or physiographic interest are Geological SSSIs (or ASSIs). Sites may be divided into management units, with some areas including units that are noted for both biological and geological interest. Biological Biological SSSI/ASSIs may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lagoon
A lagoon is a shallow body of water separated from a larger body of water by a narrow landform, such as reefs, barrier islands, barrier peninsulas, or isthmuses. Lagoons are commonly divided into ''coastal lagoons'' (or ''barrier lagoons'') and ''atoll lagoons''. They have also been identified as occurring on mixed-sand and gravel coastlines. There is an overlap between bodies of water classified as coastal lagoons and bodies of water classified as estuaries. Lagoons are common coastal features around many parts of the world. Definition and terminology Lagoons are shallow, often elongated bodies of water separated from a larger body of water by a shallow or exposed shoal, coral reef, or similar feature. Some authorities include fresh water bodies in the definition of "lagoon", while others explicitly restrict "lagoon" to bodies of water with some degree of salinity. The distinction between "lagoon" and "estuary" also varies between authorities. Richard A. Davis Jr. restrict ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juncus Gerardii
''Juncus gerardii'', commonly known as blackgrass, black needle rush or saltmarsh rush, is a flowering plant in the rush family Juncaceae. Distribution ''Juncus gerardii'' is mainly a coastal species, occurring at the high tide mark on the Mediterranean, Atlantic, Baltic and Black sea shorelines of Europe and the east coast of North America ''Juncus gerardii'' is one of the many species identified by Eric Hultén as amphi-Atlantic plants, meaning that they have a disjunct distribution on both sides of the Atlantic, but are absent on the Pacific side of the globe. It also occurs inland in parts of eastern Europe, west and central Asia, particularly on saline soils. In North America it occurs along the shorelines of areas once flooded by the sea, and as a weed along railway lines, for example in Minnesota. In Indiana, it is the only ''Juncus'' species found in the Tipton Till Plain, a Till Plain Till plains are an extensive flat plain of glacial till that forms when a sheet of i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juncus Maritimus
''Juncus maritimus'', known as the sea rush, is a species of rush that grows on coastlines. It is sometimes considered conspecific with '' Juncus kraussii''. It has a wide distribution across the western Palearctic realm (all of Europe, western Asia and the Maghreb). According to Edward Catich Edward M. Catich (1906–April 14, 1979) was an American Roman Catholic priest, teacher, and calligrapher. He is noted for the fullest development of the thesis that the inscribed Roman square capitals of the Augustan age and afterward owed their ... the ancient Egyptians used ''Juncus maritimus'' as a brush for writing. He describes the process of making one: “the end of which he rushwas cut at a slant and its fibers split by chewing to produce a small chisel-shaped ‘brush‘.”. References External links maritimus Plants described in 1789 Taxa named by Jean-Baptiste Lamarck Flora of Europe Flora of Sweden {{Poales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Festuca Rubra
''Festuca rubra'' is a species of grass known by the common name red fescue or creeping red fescue. It is widespread across much of the Northern Hemisphere and can tolerate many habitats and climates. It is best adapted to well-drained soils in cool, temperate climates; it prefers shadier areas and is often planted for its shade tolerance. Wild animals browse it, but it has not been important for domestic forage due to low productivity and palatability. It is also an ornamental plant for gardens. Description ''Festuca rubra'' is perennial and has sub-species that have rhizomes and/or form bunchgrass tufts. It mainly exists in neutral and acidic soils. It can grow between 2 and 20 cm tall. Like all fescues, the leaves are narrow and needle like, making it less palatable to livestock. The swards that it forms are not as tufted as sheep's fescue (''Festuca ovina'') or wavy hair grass (''Deschampsia flexuosa''). The tufted nature is what gives the grass its springy characterist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puccinellia Maritima
''Puccinellia maritima'' is a species of grass Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in lawns a ... known by the common names including seaside alkaligrass, common saltmarsh-grass or sea poa grass. It is native to Western Europe and it is present in most of North East North America. It grows in moist, usually saline soils. It can reach a height of 80 cm and has greyish-green leaves. References maritima Halophytes Grasses of Europe {{Pooideae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atriplex Portulacoides
''Halimione portulacoides'' or sea purslane (2n=36) is a shrub found in Eurasia. Description The plant grows to in height. It is evergreen, and in northern temperate climates it flowers from July to September. The flowers are monoecious and are pollinated by wind. Taxonomy Botanical synonyms include ''Atriplex portulacoides'' L. and ''Obione portulacoides'' (L.) Moq. Recent phylogenetic research revealed that ''Halimione'' is a distinct genus and cannot be included in ''Atriplex''. Distribution and habitat ''Halimione portulacoides'' occurs at the sea shores of western and southern Europe, and from the Mediterranean Sea to western Asia. A halophyte, it is found in salt marshes and coastal dunes, and is usually flooded at high tide. Ireland Copeland Islands ( Co. Down). Uses The edible leaves can be eaten raw in salads or cooked as a potherb. They are thick and succulent with a crunchy texture and a natural saltiness. The leaves are good for human and animal health ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spartina Anglica
''Sporobolus anglicus'' (common cordgrass) is a species of cordgrass that originated in southern England in about 1870 and is a neonative species in Britain. It was reclassified as ''Sporobolus anglicus'' after a taxonomic revision in 2014,Peterson, PM , et al (2014) A molecular phylogeny and new subgeneric classification of Sporobolus (Poaceae: Chloridoideae: Sporobolinae), Taxon 63: 1212-1243. but ''Spartina anglica'' is still in common usage. It is an allotetraploid species derived from the hybrid ''Sporobolus × townsendii'', which arose when the European native cordgrass ''Sporobolus maritimus'' (Small Cordgrass) hybridised with the introduced American ''Sporobolus alterniflorus'' (Smooth Cordgrass). It is a herbaceous perennial plant growing tall, yellowish green in spring and summer, and turning light brown in autumn and winter. The leaves are long, and broad at the base, tapering to a point. It produces flowers and seeds on only one side of the stalk. The flowers are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salt Marsh
A salt marsh or saltmarsh, also known as a coastal salt marsh or a tidal marsh, is a coastal ecosystem in the upper coastal intertidal zone between land and open saltwater or brackish water that is regularly flooded by the tides. It is dominated by dense stands of salt-tolerant plants such as herbs, grasses, or low shrubs. These plants are terrestrial in origin and are essential to the stability of the salt marsh in trapping and binding sediments. Salt marshes play a large role in the aquatic food web and the delivery of nutrients to coastal waters. They also support terrestrial animals and provide coastal protection. Salt marshes have historically been endangered by poorly implemented coastal management practices, with land reclaimed for human uses or polluted by upstream agriculture or other industrial coastal uses. Additionally, sea level rise caused by climate change is endangering other marshes, through erosion and submersion of otherwise tidal marshes. However, recent ackn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Purslane
Sea purslane is a common name for several plants and may refer to: * ''Halimione portulacoides'', in family Amaranthaceae * ''Honckenya peploides'', in family Caryophyllaceae * ''Sesuvium maritimum'', in family Aizoaceae * ''Sesuvium portulacastrum ''Sesuvium portulacastrum'' is a sprawling perennial herb that grows in coastal areas throughout much of the world. It is commonly known as shoreline purslane or (ambiguously) " sea purslane," in English, ''dampalit'' in Tagalog and 海马齿sl ...'', in family Aizoaceae {{Plant common name ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cerastoderma Glaucum
''Cerastoderma glaucum'', the lagoon cockle, is a species of saltwater clam, a marine bivalve mollusc in the family Cardiidae, the cockles. This species is found along the coasts of Europe and North Africa, including the Mediterranean and Black Seas and the Caspian Sea, and the low-salinity Baltic Sea. It is a euryhaline species living in salinities 4-100 ‰.Russell PJ, Petersen GH (1973) The use of ecological data in the elucidation of some shallow water European ''Cardium'' species. ''Malacologia'' 14:223–232Nikula R, Väinölä R (2003) Phylogeography of ''Cerastoderma glaucum'' (Bivalvia: Cardiidae) across Europe: A major break in the Eastern Mediterranean. ''Marine Biology'' 143: 339-350 In north-west Europe (including the British Isles), it typically does not live on open shores but rather in shallow burrows in saline lagoons, or sometimes on lower shores in estuaries. It cannot tolerate significant exposure to the air. The form found in lagoons is thinner-shelled than th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gammarus Chevreuxi
''Gammarus chevreuxi'' is a species of crustacean in the family Gammaridae. It was first described by Elsie Wilkins Sexton in 1913. The organism is very similar to ''Gammarus locusta'', but there are certain constant characteristic which set it apart, for example, the antennae, the fourth side-plates and the third uropods. It is found in various places in England, such as the Severn Estuary, and in Portugal. Eyes and heredity The eyes of ''G. chevreuxi'' are made up of black facets separated by white pigment. A mutation causes red facets. The recessive nature of the gene means that red-eyed populations breed true, being homozygous, while heterozygous black eyed populations may have either red-eyed or black-eyed offspring, in an illustration of Mendel's law of segregation Mendelian inheritance (also known as Mendelism) is a type of biological inheritance following the principles originally proposed by Gregor Mendel in 1865 and 1866, re-discovered in 1900 by Hugo de Vries ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
