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Acidic Grassland
Acid grassland is a nutrient-poor habitat characterised by grassy tussocks and bare ground. Habitat The vegetation is dominated by grasses and herbaceous plants, growing on soils deficient in lime (calcium). These may be found on acid sedimentary rock such as sandstone; acid igneous rock such as granite; and fluvial or glacial deposits such as sand and gravel. Typical plants of lowland acid grassland in Britain include common bent grass, ''Agrostis capillaris'', wavy hair-grass, ''Deschampsia flexuosa'', bristle bent grass, ''Agrostis curtisii'', tormentil, ''Potentilla erecta'', and flowers such as sheep's sorrel, ''Rumex acetosella'' and heath bedstraw, ''Galium saxatile''. In Britain In Britain, under 30,000 hectares of lowland acid grassland remain, often on common land and nature reserves. It is considered a nationally important habitat; areas are found in London on freely-draining sandy and gravelly soils. 271 Sites of Special Scientific Interest have been notified with acid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat
In ecology, the term habitat summarises the array of resources, physical and biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species habitat can be seen as the physical manifestation of its ecological niche. Thus "habitat" is a species-specific term, fundamentally different from concepts such as environment or vegetation assemblages, for which the term "habitat-type" is more appropriate. The physical factors may include (for example): soil, moisture, range of temperature, and light intensity. Biotic factors will include the availability of food and the presence or absence of predators. Every species has particular habitat requirements, with habitat generalist species able to thrive in a wide array of environmental conditions while habitat specialist species requiring a very limited set of factors to survive. The habitat of a species is not necessarily found in a geographical area, it can be the interior ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rumex Acetosella
''Rumex acetosella'', commonly known as red sorrel, sheep's sorrel, field sorrel and sour weed, is a species of flowering plant in the buckwheat family Polygonaceae. Native to Eurasia and the British Isles, the plant and its subspecies are common perennial weeds. It has green arrowhead-shaped leaves and red-tinted deeply ridged stems, and it sprouts from an aggressive and spreading rhizome. The flowers emerge from a tall, upright stem. Female flowers are maroon in color. Description ''Rumex acetosella'' is a perennial herb which spreads via rhizomes. It has a slender and reddish, upright stem that is branched at the top, reaching a height of . The arrow-shaped leaves are small, about long and wide, with pointed lobes at the base. It blooms during March to November, when yellowish-green (male) or reddish (female) flowers develop on separate plants at the apex of the stem, which develop into the red fruits ( achenes). It should not be confused with the similarly named ''R. a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Special Areas Of Conservation
A Special Area of Conservation (SAC) is defined in the European Union's Habitats Directive (92/43/EEC), also known as the ''Directive on the Conservation of Natural Habitats and of Wild Fauna and Flora''. They are to protect the 220 habitats and approximately 1,000 species listed in annex I and II of the directive which are considered to be of European interest following criteria given in the directive. They must be chosen from the Sites of Community Importance by the member states and designated SAC by an act assuring the conservation measures of the natural habitat. SACs complement Special Protection Areas and together form a network of protected sites across the European Union called Natura 2000. This, in turn, is part of the Emerald network of Areas of Special Conservation Interest (ASCIs) under the Berne Convention. Assessment methodology in the United Kingdom Prior to being designated as a Special Area of Conservation (SAC), sites have been assessed under a two-stage process ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wimbledon Common
Wimbledon Common is a large open space in Wimbledon, southwest London. There are three named areas: Wimbledon Common, Putney Heath, and Putney Lower Common, which together are managed under the name Wimbledon and Putney Commons totalling 460 hectares (1,140 acres). Putney Lower Common is set apart from the rest of the Common by a minimum of of the built-up western end of Putney. Wimbledon and Putney Commons Wimbledon Common, together with Putney Heath and Putney Lower Common, is protected by the Wimbledon and Putney Commons Act of 1871 from being enclosed or built upon. The common is for the benefit of the general public for informal recreation, and for the preservation of natural flora and fauna. It is the largest expanse of heathland in London, with an area of bog with a flora that is rare in the region. The western slopes, which lie on London Clay, support mature mixed woodland. The Commons are also an important site for the stag beetle. Most of the Common is a Site o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epping Forest
Epping Forest is a area of ancient woodland, and other established habitats, which straddles the border between Greater London and Essex. The main body of the forest stretches from Epping in the north, to Chingford on the edge of the London built-up area. South of Chingford the forest narrows, and forms a green corridor that extends deep into East London, as far as Forest Gate; the Forest's position gives rise to its nickname, the ''Cockney Paradise''. It is the largest forest in London. It lies on a ridge between the valleys of the rivers Lea and Roding. It contains areas of woodland, grassland, heath, streams, bogs and ponds, and its elevation and thin gravelly soil (the result of glaciation) historically made it less suitable for agriculture. The Forest was historically managed as a common; the land was held by a number of local landowners who exercised economic rights over aspects such as timber, while local commoners had grazing and other rights. It was designated a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richmond Park
Richmond Park, in the London Borough of Richmond upon Thames, is the largest of Royal Parks of London, London's Royal Parks, and is of national and international importance for wildlife conservation. It was created by Charles I of England, Charles I in the 17th century as a Deer park (England), deer park. It is now a national nature reserves in England, national nature reserve, a Site of Special Scientific Interest and a Special Area of Conservation and is included, at Grade I, on Historic England's Register of Historic Parks and Gardens of special historic interest in England. Its landscapes have inspired many famous artists and it has been a location for several films and TV series. Richmond Park includes many buildings of architectural or historic interest. The Listed building, Grade I-listed White Lodge was List of British royal residences#Current royal residences, formerly a royal residence and is now home to the Royal Ballet School. The park's boundary walls and te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sites 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] |
Nature Reserve
A nature reserve (also known as a wildlife refuge, wildlife sanctuary, biosphere reserve or bioreserve, natural or nature preserve, or nature conservation area) is a protected area of importance for flora, fauna, or features of geological or other special interest, which is reserved and managed for purposes of conservation and to provide special opportunities for study or research. They may be designated by government institutions in some countries, or by private landowners, such as charities and research institutions. Nature reserves fall into different IUCN categories depending on the level of protection afforded by local laws. Normally it is more strictly protected than a nature park. Various jurisdictions may use other terminology, such as ecological protection area or private protected area in legislation and in official titles of the reserves. History Cultural practices that roughly equate to the establishment and maintenance of reserved areas for animals date bac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Land
Common land is land owned by a person or collectively by a number of persons, over which other persons have certain common rights, such as to allow their livestock to graze upon it, to collect Wood fuel, wood, or to cut turf for fuel. A person who has a right in, or over, common land jointly with another or others is usually called a commoner. In the New Forest, the New Forest Commoner is recognised as a minority cultural identity as well as an agricultural vocation, and members of this community are referred to as Commoners. In Great Britain, common land or former common land is usually referred to as a common; for instance, Clapham Common and Mungrisdale Common. Due to enclosure, the extent of common land is now much reduced from the millions of acres that existed until the 17th century, but a considerable amount of common land still exists, particularly in upland areas. There are over 8,000 registered commons in England alone. Origins Originally in medieval England the co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galium Saxatile
''Galium saxatile'' or heath bedstraw is a plant species of the genus ''Galium''. It is related to cleavers. ''Galium saxatile'' is a perennial mat-forming herb, found on grassland, moors, heaths and woods. It can reach a height of , and flowers in the UK from May to August. The stems are hairless and four sided. Its leaves are long, with 6–8 per whorl, and are lanceolate or obovate in shape. The mountain ringlet butterfly uses the plant for nectar. ''Galium saxatile'' is widespread across much of northern and central Europe from Portugal and Ireland to Scandinavia, France, Germany, Poland, Ukraine and Russia. It is also reportedly sparingly naturalized in Quebec, California and the Falkland Islands The Falkland Islands (; es, Islas Malvinas, link=no ) is an archipelago in the South Atlantic Ocean on the Patagonian Shelf. The principal islands are about east of South America's southern Patagonian coast and about from Cape Dubouzet .... Gallery Image:Galium sa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potentilla Erecta
''Potentilla erecta'' (syn. ''Tormentilla erecta'', ''Potentilla laeta'', ''Potentilla tormentilla'', known as the (common) tormentil, septfoil or erect cinquefoil ) is a herbaceous perennial plant belonging to the rose family (Rosaceae). Description ''Potentilla erecta'' is a low, clump-forming plant with slender, procumbent to arcuately upright stalks, growing tall and with non-rooting runners. It grows wild predominantly in Europe and western Asia mostly on acid soils and in a wide variety of habitats such as mountains, heaths, meadows, sandy soils and dunes. This plant flowers from May to August/September. There is one yellow, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sedimentary Rock
Sedimentary rocks are types of rock that are formed by the accumulation or deposition of mineral or organic particles at Earth's surface, followed by cementation. Sedimentation is the collective name for processes that cause these particles to settle in place. The particles that form a sedimentary rock are called sediment, and may be composed of geological detritus (minerals) or biological detritus (organic matter). The geological detritus originated from weathering and erosion of existing rocks, or from the solidification of molten lava blobs erupted by volcanoes. The geological detritus is transported to the place of deposition by water, wind, ice or mass movement, which are called agents of denudation. Biological detritus was formed by bodies and parts (mainly shells) of dead aquatic organisms, as well as their fecal mass, suspended in water and slowly piling up on the floor of water bodies (marine snow). Sedimentation may also occur as dissolved minerals precipitate from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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