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Valkjärvi (lake)
Valkjärvi is a lake located in the Nurmijärvi municipality in Southern Finland. It is an island-free lake in the immediate vicinity of Klaukkala's urban area. The water flows from the lake along the Luhtajoki River all the way to the Vantaa River. Valkjärvi is the most lushest lake of Nurmijärvi,Jorma Keskitalo: Kasviplanktonlajisto ja –biomassa Uudenmaan seurantajärvillä 2014 – 2015. (in Finnish) and it is part of the Nurmijärvi's lake monitoring program of the Central Uusimaa Environment Centre (''Keski-Uudenmaan ympäristökeskus'') due to its poor oxygen values near the bottom of the lake, which are observed especially in summer and winter under ice.Valkjärvi - Keski-Uudenmaan ympäristökeskus (in Finnish) |
Nurmijärvi
Nurmijärvi () is a municipality in Finland, located in the southern interior of the country. Nurmijärvi is situated in the Uusimaa region. The population of Nurmijärvi is approximately . It is the most populous Municipalities of Finland, municipality in Finland and the most populous municipality without city status (). Nurmijärvi is part of the Helsinki metropolitan area, which has approximately million inhabitants. Nurmijärvi is located north of the capital, Helsinki. Nurmijärvi's neighbouring municipalities are Espoo, Vantaa, Tuusula, Hyvinkää and Vihti. In recent decades, Nurmijärvi has been one of the fastest growing municipalities in the Helsinki Metropolitan Area and in Finland as a whole because of its proximity to Helsinki. The municipality does not have a single clear residential settlement, but is divided into mainly four areas: the largest urban area in the southern part of the municipality, Klaukkala (over 20,000 inhabitants); the administrative cent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uusimaa
Uusimaa (; , ; both lit. 'new land') is a region of Finland. It borders the regions of Southwest Finland, Tavastia Proper (Kanta-Häme), Päijänne Tavastia (Päijät-Häme), and Kymenlaakso. Finland's capital and largest city, Helsinki, along with the surrounding metropolitan area, are both contained in the region, and Uusimaa is Finland's most populous region. The population of Uusimaa is 1,734,000. While predominantly Finnish-speaking, Uusimaa has the highest total number of native speakers of Swedish in Finland even at a much lower share than two other regions. History From the time of the Vikings in the 8th century, an eastern road ran along the Gulf of Finland. The first inhabitants were nomads., pp. 5-7 The place name of Nuuksio derives from the Sami word which means 'swan.'' Later Finns proper and Tavastians inhabited the area. Some place names have traces of Tavastian village names, like Konala, which likely derives from the older Tavastian village name ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luhtajoki
Luhtajoki is a long river in Southern Finland. The river starts from Hyvinkää and flows as ''Kyläjoki'' into the church village of Nurmijärvi, where it flows 23 kilometers (14 mi) into the Klaukkala and from there to the River Vantaa where it connects. The Luhtajoki River is lush and its water is clayey. The river is subject to both point and diffuse loads. The loads are caused by, for example, sewage load and agriculture. There are extensive floodplains in the area. The river has been sprouted several times. The Luhtajoki River is classified as satisfactory and the River Kyläjoki as passable. The river is also quite demanding for canoeing due to its eutrophication and sometimes its low amount of water. See also * Kuhakoski * Valkjärvi (lake) Valkjärvi is a lake located in the Nurmijärvi municipality in Southern Finland. It is an island-free lake in the immediate vicinity of Klaukkala's urban area. The water flows from the lake along the Luhtajoki River all the way ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Finland
Finland, officially the Republic of Finland, is a Nordic country in Northern Europe. It borders Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of Bothnia to the west and the Gulf of Finland to the south, opposite Estonia. Finland has a population of 5.6 million. Its capital and largest city is Helsinki. The majority of the population are Finns, ethnic Finns. The official languages are Finnish language, Finnish and Swedish language, Swedish; 84.1 percent of the population speak the first as their mother tongue and 5.1 percent the latter. Finland's climate varies from humid continental climate, humid continental in the south to boreal climate, boreal in the north. The land cover is predominantly boreal forest biome, with List of lakes of Finland, more than 180,000 recorded lakes. Finland was first settled around 9000 BC after the Last Glacial Period, last Ice Age. During the Stone Age, various cultures emerged, distinguished by differen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Klaukkala
Klaukkala (; , ) is the southern-most Urban areas in Finland, urban area () of the Nurmijärvi municipality in Uusimaa, Finland, located near Valkjärvi (lake), Lake Valkjärvi. It is the largest urban area in Nurmijärvi, and despite the fact that it officially has the status of a village, it is often mistakenly thought to be a separate List of cities in Finland, town due to its size and structure. In the 2010s, Klaukkala's urban area grew to be part of the larger Helsinki urban area. Klaukkala has a population of over 20,000 and is the fastest-growing area of Nurmijärvi; almost half of the total population of the municipality lives in Klaukkala. Its population began to rise in the 1960s, when it surpassed the Nurmijärvi (village), church village of Nurmijärvi. In the 1970s, Klaukkala also grew larger than Rajamäki (village), Rajamäki, which until then was the largest of Nurmijärvi's villages. At that time, Klaukkala's population was over 2,500. Klaukkala has significant Hu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake
A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from the ocean, although they may be connected with the ocean by rivers. Lakes, as with other bodies of water, are part of the water cycle, the processes by which water moves around the Earth. Most lakes are fresh water and account for almost all the world's surface freshwater, but some are salt lakes with salinities even higher than that of seawater. Lakes vary significantly in surface area and volume of water. Lakes are typically larger and deeper than ponds, which are also water-filled basins on land, although there are no official definitions or scientific criteria distinguishing the two. Lakes are also distinct from lagoons, which are generally shallow tidal pools dammed by sandbars or other material at coastal regions of ocean ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Finland
Southern Finland (, ) was a province of Finland from 1997 to 2009. It bordered the provinces of Western Finland and Eastern Finland. It also bordered the Gulf of Finland and Russia. History On September 1, 1997 the Uusimaa Province, the Kymi Province and the southern parts of the Häme Province were joined to form the new Southern Finland Province. All the provinces of Finland were abolished on January 1, 2010. Administration The State Provincial Office was a joint regional authority of seven different ministries. It promoted national and regional objectives of the State central administration. The State Provincial Office of Southern Finland employed about 380 persons. Its service offices were located in the cities of Hämeenlinna, Helsinki, and Kouvola. The administrative seat was placed at Hämeenlinna. Regions Southern Finland was divided into six regions: *South Karelia (''Etelä-Karjala / Södra Karelen'') * Päijänne Tavastia (''Päijät-Häme / Päijänne T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vantaa (river)
The Vantaa (, ) is a long river in Southern Finland. The river starts from the lake in Hausjärvi and flows into the Gulf of Finland at ' in Helsinki. One of the tributaries of the Vantaa river is Keravanjoki that flows through the town of Kerava north of Helsinki. Use as water and power supply The country's capital, Helsinki, uses water from the Vantaa river as its backup water supply if the Päijänne Water Tunnel needs to be repaired. The Helsinki-based energy company Helsingin Energia has a working power station museum located at the mouth of Vantaanjoki. The Hydropower Plant produces an average of 500 MWh annually. Gallery Image:Vanhankaupunginkoski2.jpg, Vanhankaupunginkoski rapids Image:Ruutinkoski.JPG, Ruutinkoski rapids Image:Helsinki-Pitkakoski kevattalvi.jpg, Pitkäkoski rapids during winter, located between Helsinki and Vantaa Image:ADamInVantaanjoki.JPG, A dam in Vantaanjoki See also * Kaljakellunta, an annual social event on the river * Kerava Rive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blue-green Algae
Cyanobacteria ( ) are a group of autotrophic gram-negative bacteria that can obtain biological energy via oxygenic photosynthesis. The name "cyanobacteria" () refers to their bluish green (cyan) color, which forms the basis of cyanobacteria's informal common name, blue-green algae. Cyanobacteria are probably the most numerous taxon to have ever existed on Earth and the first organisms known to have produced oxygen, having appeared in the middle Archean eon and apparently originated in a freshwater or terrestrial environment. Their photopigments can absorb the red- and blue-spectrum frequencies of sunlight (thus reflecting a greenish color) to split water molecules into hydrogen ions and oxygen. The hydrogen ions are used to react with carbon dioxide to produce complex organic compounds such as carbohydrates (a process known as carbon fixation), and the oxygen is released as a byproduct. By continuously producing and releasing oxygen over billions of years, cyanobacteria ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phytoplankton
Phytoplankton () are the autotrophic (self-feeding) components of the plankton community and a key part of ocean and freshwater Aquatic ecosystem, ecosystems. The name comes from the Greek language, Greek words (), meaning 'plant', and (), meaning 'wanderer' or 'drifter'. Phytoplankton obtain their energy through photosynthesis, as trees and other plants do on land. This means phytoplankton must have light from the sun, so they live in the well-lit surface layers (euphotic zone) of oceans and lakes. In comparison with terrestrial plants, phytoplankton are distributed over a larger surface area, are exposed to less seasonal variation and have markedly faster turnover rates than trees (days versus decades). As a result, phytoplankton respond rapidly on a global scale to climate variations. Phytoplankton form the base of marine and freshwater food webs and are key players in the global carbon cycle. They account for about half of global photosynthetic activity and at least half o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptomonad
The cryptomonads (or cryptophytes) are a superclass of algae, most of which have plastids. They are traditionally considered a division of algae among phycologists, under the name of Cryptophyta. They are common in freshwater, and also occur in marine and brackish habitats. Each cell is around 10–50 μm in size and flattened in shape, with an anterior groove or pocket. At the edge of the pocket there are typically two slightly unequal flagella. Some may exhibit mixotrophy. They are classified as superclass Cryptomonada, which is divided into two classes: heterotrophic Goniomonadea and phototrophic Cryptophyceae. The two groups are united under three shared morphological characteristics: presence of a periplast, ejectisomes with secondary scroll, and mitochondrial cristae with flat tubules. Genetic studies as early as 1994 also supported the hypothesis that ''Goniomonas'' was sister to Cryptophyceae. A study in 2018 found strong evidence that the common ancestor of Crypto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beach
A beach is a landform alongside a body of water which consists of loose particles. The particles composing a beach are typically made from Rock (geology), rock, such as sand, gravel, shingle beach, shingle, pebbles, etc., or biological sources, such as mollusc shells or coralline algae. Sediments settle in different densities and structures, depending on the local wave action and weather, creating different textures, colors and gradients or layers of material. Though some beaches form on inland freshwater locations such as lakes and rivers, most beaches are in coastal areas where wind wave, wave or Ocean current, current action deposition (geology), deposits and reworks sediments. Coastal erosion, Erosion and changing of beach geologies happens through natural processes, like wave action and Extreme weather, extreme weather events. Where wind conditions are correct, beaches can be backed by coastal dunes which offer protection and regeneration for the beach. However, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
