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Kyrksjön
Kyrksjön () is a small lake in Bromma, a western suburb in Stockholm, Sweden. Named after its vicinity to the old Bromma Church, the lake was made part of the nature reserve Kyrksjölöten in 1997. Three other lakes are located near Kyrksjön: Judarn, Lillsjön, and Råcksta Träsk. Characteristics With an area of 6,7 hectares and average depth of 1,5 metres (maximum 2,5 metres), Kyrkosjön contains 80,000 cubic metres of water and is supplied by a drainage area of 48 hectares. The lake is thus small and shallow, with no feeder or storm water conduit connected to it. The lake is surrounded by one of the biggest broadleaf forest in Stockholm rich in various species of birds, batrachians, and bats. Levels of phosphorus and nitrogen have decreased since the 1980s. Metal levels are low and the waters are moderately clear. Two bathe are located at Kyrkosjön, which is considered to be of significant recreational and natural value. Sewers from a nearby allotment-garden a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Judarn
Judarn is a small lake in Bromma, a western suburb of Stockholm, Sweden. Surrounded by forest and the Judarskogen nature reserve, it stretches between Åkeshov and Södra Ängby. Three other lakes are found nearby: Kyrksjön, Lillsjön, and Råcksta Träsk. The name is etymologically associated to ''ljuda'', the verb "to sound". Characteristics With an area of 74,000 square metres and an average depth of 2.7 metres (maximum 3.7 m), the lake contains 180,000 cubic metres of water and is supplied by a drainage area of 0.8 km². Originally supplying lake Lillsjön, Judarn today discharges into lake Mälaren. Regarded as one of the least contaminated lakes in Stockholm, Judarn receives storm water from a nearby traffic route which gives it considerable levels of lead resulting in a bathing ban, metal content otherwise being low and phosphorus levels moderate. The lake, considered as being of great recreational and natural value, is part of the nature reserve Judarskogen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Råcksta Träsk
Råcksta Träsk (Swedish language, Swedish: "Råcksta Swamp") is a small lake in the western suburbs of Stockholm, Sweden. Notwithstanding its location in the vicinity of the Swedish capital and high levels of lead and copper, the lake is considered as an important breeding ground for frogs, of moderate interest to pleasure fishing, and of minor interest for birds.Råcksta träsk There are three other small lakes located nearby: Judarn, Kyrksjön, and Lillsjön, Ulvsunda, Lillsjön. Catchment area The catchment area is mostly composed of forest and open terrain part of the Grimsta Nature Reserve, Grimsta nature reserve, with several minor wetlands. 20 percent of the catchment area is composed of residential buildings and 10 per cent of roads. 300 metres downstream is a historical mill administrated by a society devoted to local culture and history (''Vällingby hembygdsförening'') with limited means to regulate the water level. West of the lake is a grass-grown peak compose ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stormwater
Stormwater, also written storm water, is water that originates from precipitation (storm), including heavy rain and meltwater from hail and snow. Stormwater can soak into the soil ( infiltrate) and become groundwater, be stored on depressed land surface in ponds and puddles, evaporate back into the atmosphere, or contribute to surface runoff. Most runoff is conveyed directly as surface water to nearby streams, rivers or other large water bodies (wetlands, lakes and oceans) without treatment. In natural landscapes, such as forests, soil absorbs much of the stormwater. Plants also reduce stormwater by improving infiltration, intercepting precipitation as it falls, and by taking up water through their roots. In developed environments, such as cities, unmanaged stormwater can create two major issues: one related to the volume and timing of runoff ( flooding) and the other related to potential contaminants the water is carrying (water pollution). In addition to the pollutants carr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allotment (gardening)
An allotment (British English), is a plot of land made available for individual, non-commercial gardening for growing food plants, so forming a kitchen garden away from the residence of the user. Such plots are formed by subdividing a piece of land into a few or up to several hundred parcels that are assigned to individuals or families, contrary to a community garden where the entire area is tended collectively by a group of people. The term "victory garden" is also still sometimes used, especially when a garden dates back to the World War I, First or World War II, Second World War. The individual size of a parcel typically suits the needs of a family, and often the plots include a shed for tools and shelter, and sometimes a hut for seasonal or weekend accommodation. The individual gardeners are usually organised in an allotment association, which leases or is granted the land from an owner who may be a public, private or ecclesiastical entity, and who usually stipulates that it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Myriophyllum
''Myriophyllum'' (water milfoil) is a genus of about 69 species of freshwater aquatic plants, with a cosmopolitan distribution. The centre of diversity for ''Myriophyllum'' is Australia with 43 recognized species (37 endemic). These submersed aquatic plants are perhaps most commonly recognized for having elongate stems with air canals and whorled leaves that are finely, pinnately divided, but there are many exceptions. For example, the North American species ''M''. ''tenellum'' has alternately arranged scale-like leaves, while many Australian species have small alternate or opposite leaves that lack dissection. The plants are usually heterophyllous; leaves above the water are often stiffer and smaller than the submerged leaves on the same plant and can lack dissection. Species can be monoecious or dioecious. In monoecious species, plants are hermaphrodite, while in dioecious species, plants are either male or female, the flowers are small, 4(2)-parted and usually borne in emergent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Utricularia Vulgaris
''Utricularia vulgaris'' (greater bladderwort or common bladderwort) is an aquatic species of bladderwort found in Asia and Europe. The plant is free-floating and does not put down roots. Stems can attain lengths of over one metre in a single growing season, but die back and form Turion (botany), turions in winter. The leaves are finely pinnately divided, between one and eight centimetres long and carry many carnivorous plant, bladder-like traps. The yellow flowers are borne on stalks above the surface of the water between April and August. In eastern Asia and North America, its place is taken by the related species ''Utricularia macrorhiza, U. macrorhiza''. References Carnivorous plants of North America Carnivorous plants of Europe Utricularia, vulgaris Plants described in 1753 Taxa named by Carl Linnaeus {{Lentibulariaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chara Tomentosa
Chara may refer to: Places *Chara (river), a river in Russia * Chara (rural locality), a rural locality (a ''selo'') in Zabaykalsky Krai, Russia * Chara Airport, an airport in Russia near the rural locality * Chara Sands, a sanded area in Siberia, Russia Science * ''Chara'' (alga), a genus of algae in the family Characeae * ''Chara'' (moth), a genus of moths in the family Noctuidae *CHARA array, a telescope *Beta Canum Venaticorum or Chara, a star *Chara or Southern dogs, a constellation including Beta Canum Venaticorum and Cor Caroli People * Chara (given name) *Chara (singer), Japanese singer * Chara (surname) * Chara people, ethnic group in the Southern Nations, Nationalities, and Peoples' Region of Ethiopia Other uses * ''Chara'' (magazine), a Japanese Yaoi/Shōjo magazine *Chara language, the language of the Chara people * USS ''Chara'' (AKA-58), a 1944 Achernar class attack cargo ship * Chara (''Undertale''), a video game character See also *Charabanc, a type of vehicl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charales
Charales is an order of freshwater green algae in the division Charophyta, class Charophyceae, commonly known as stoneworts. Depending on the treatment of the genus '' Nitellopsis'', living (extant) species are placed into either one family ( Characeae) or two (Characeae and Feistiellaceae). Further families are used for fossil members of the order. Linnaeus established the genus '' Chara'' in 1753. Taxonomy The higher level classification of green algae was unsettled . AlgaeBase places Charales within the class Charophyceae and its circumscription of the division Charophyta. Families The number of families and their division into genera varies. , AlgaeBase accepts two families containing some extant species and four families containing only fossil species: * Characeae S.F.Gray * Feistiellaceae Schudack *† Aclistocharaceae X.G.Zhou (may be included in Characeae) *† Atopocharaceae R.E.Peck (may be included in Clavatoraceae) *† Clavatoraceae Pia *† Porocharaceae Gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquatic Plant
Aquatic plants, also referred to as hydrophytes, are vascular plants and Non-vascular plant, non-vascular plants that have adapted to live in aquatic ecosystem, aquatic environments (marine ecosystem, saltwater or freshwater ecosystem, freshwater). In lakes, rivers and wetlands, aquatic vegetations provide cover for aquatic animals such as fish, amphibians and aquatic insects, create substrate (marine biology), substrate for benthic invertebrates, produce oxygen via photosynthesis, and serve as food for some herbivorous wildlife. Familiar examples of aquatic plants include Nymphaeaceae, waterlily, Nelumbo, lotus, duckweeds, mosquito fern, floating heart, water milfoils, Hippuris, mare's tail, water lettuce, water hyacinth, and algae. Aquatic plants require special adaptation (biology), adaptations for prolonged inundation in water, and for buoyancy, floating at the water surface. The most common adaptation is the presence of lightweight internal packing cells, aerenchyma, but floa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copepod
Copepods (; meaning 'oar-feet') are a group of small crustaceans found in nearly every freshwater and saltwater habitat (ecology), habitat. Some species are planktonic (living in the water column), some are benthos, benthic (living on the sediments), several species have Parasitism, parasitic phases, and some continental species may live in limnoterrestrial habitats and other wet terrestrial places, such as swamps, under leaf fall in wet forests, bogs, springs, ephemeral ponds, puddles, damp moss, or water-filled recesses of plants (phytotelmata) such as bromeliads and pitcher plants. Many live underground in marine and freshwater caves, sinkholes, or stream beds. Copepods are sometimes used as Ecological indicator, biodiversity indicators. As with other crustaceans, copepods have a larval form. For copepods, the egg hatches into a Crustacean larvae#Nauplius, nauplius form, with a head and a tail but no true thorax or abdomen. The larva molts several times until it resembles the a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotifer
The rotifers (, from Latin 'wheel' and 'bearing'), sometimes called wheel animals or wheel animalcules, make up a phylum (Rotifera ) of microscopic and near-microscopic Coelom#Pseudocoelomates, pseudocoelomate animals. They were first described by John Harris (writer), Rev. John Harris in 1696, and other forms were described by Antonie van Leeuwenhoek in 1703. Most rotifers are around long (although their size can range from to over ), and are common in freshwater environments throughout the world with a few Seawater, saltwater species. Some rotifers are free swimming and truly planktonic, others move by inchworming along a substrate, and some are Sessility (zoology), sessile, living inside tubes or gelatinous holdfast (biology), holdfasts that are attached to a substrate. About 25 species are colonial (e.g., ''Sinantherina semibullata''), either sessile or planktonic. Rotifers are an important part of the freshwater zooplankton, being a major foodsource and with many specie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zooplankton
Zooplankton are the heterotrophic component of the planktonic community (the " zoo-" prefix comes from ), having to consume other organisms to thrive. Plankton are aquatic organisms that are unable to swim effectively against currents. Consequently, they drift or are carried along by currents in the ocean, or by currents in seas, lakes or rivers. Zooplankton can be contrasted with phytoplankton (cyanobacteria and microalgae), which are the plant-like component of the plankton community (the " phyto-" prefix comes from , although taxonomically ''not'' plants). Zooplankton are heterotrophic (other-feeding), whereas phytoplankton are autotrophic (self-feeding), often generating biological energy and macromolecules through chlorophyllic carbon fixation using sunlightin other words, zooplankton cannot manufacture their own food, while phytoplankton can. As a result, zooplankton must acquire nutrients by feeding on other organisms such as phytoplankton, which are generally smaller t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
