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Sasyk Liman
__NOTOC__ Sasyk, or Kunduk (, , ), is a lagoon or liman in southern Ukraine, near the Danube Delta. It is a Ramsar listed wetland site important for migrating, breeding and moulting birds. About 25,000 pairs of wetland birds make their nests there (an increase of 15,000 since 2000) and seasonal conglomerations of birds are up to 100,000 individuals. The area of the lagoon is , and has a depth up to . Until 1978 the lagoon was separated into two parts: northern brackishwater area, including the rivers Cogâlnic and Sarata, and a southern marine area. The lagoon was separated from the sea by a wide sandbar. Dam and reduced salinity In 1978, a concrete dam was built on the sandbar and the lagoon was connected to the Danube River by a canal, through which fresh flood waters come. This has adversely changed the salinity in the lake, and this plus disturbances from recreation and commercial fishing activities have influenced the habitat for wildfowl. The aim of this Soviet dam p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Sea
The Black Sea is a marginal sea, marginal Mediterranean sea (oceanography), mediterranean sea lying between Europe and Asia, east of the Balkans, south of the East European Plain, west of the Caucasus, and north of Anatolia. It is bounded by Bulgaria, Georgia (country), Georgia, Romania, Russia, Turkey, and Ukraine. The Black Sea is Inflow (hydrology), supplied by major rivers, principally the Danube, Dnieper and Dniester. Consequently, while six countries have a coastline on the sea, its drainage basin includes parts of 24 countries in Europe. The Black Sea, not including the Sea of Azov, covers , has a maximum depth of , and a volume of . Most of its coasts ascend rapidly. These rises are the Pontic Mountains to the south, bar the southwest-facing peninsulas, the Caucasus Mountains to the east, and the Crimean Mountains to the mid-north. In the west, the coast is generally small floodplains below foothills such as the Strandzha; Cape Emine, a dwindling of the east end ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canal
Canals or artificial waterways are waterways or engineered channels built for drainage management (e.g. flood control and irrigation) or for conveyancing water transport vehicles (e.g. water taxi). They carry free, calm surface flow under atmospheric pressure, and can be thought of as artificial rivers. In most cases, a canal has a series of dams and locks that create reservoirs of low speed current flow. These reservoirs are referred to as ''slack water levels'', often just called ''levels''. A canal can be called a navigation canal when it parallels a natural river and shares part of the latter's discharges and drainage basin, and leverages its resources by building dams and locks to increase and lengthen its stretches of slack water levels while staying in its valley. A canal can cut across a drainage divide atop a ridge, generally requiring an external water source above the highest elevation. The best-known example of such a canal is the Panama Can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ramsar Sites In Ukraine ...
Ukraine has 50 Ramsar sites designated as '' Wetlands of International Importance''. Ramsar sites in Ukraine have a total surface area of approximately . The Ramsar Convention on Wetlands came into effect for Ukraine on 1 December 1991. Ukraine Wetlands of International Importance References External links The Annotated Ramsar List of Wetlands of International Importance: UkraineWetlands of Ukrainewith a list of all wetlands including recognized by the Ramsar Convention and potentially to be recognized in the future {{Wetlands of Ukraine __NOTOC__ Ukraine Ukraine is a country in Eastern Europe. It is the List of European countries by area, second-largest country in Europe after Russia, which Russia–Ukraine border, borders it to the east and northeast. Ukraine also borders Belarus to the nor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Estuaries Of Ukraine
An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environments and are an example of an ecotone. Estuaries are subject both to marine influences such as tides, waves, and the influx of saline water, and to fluvial influences such as flows of freshwater and sediment. The mixing of seawater and freshwater provides high levels of nutrients both in the water column and in sediment, making estuaries among the most productive natural habitats in the world. Most existing estuaries formed during the Holocene epoch with the flooding of river-eroded or glacially scoured valleys when the sea level began to rise about 10,000–12,000 years ago. Estuaries are typically classified according to their geomorphological features or to water-circulation patterns. They can have many different names, such as bays, ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lagoons Of Ukraine
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. restricts "l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saline Lakes Of Europe
Saline may refer to: Salt-related * Saline (medicine), a liquid with salt content to match the human body * Saline water, non-medicinal salt water * Saline, a historical term (especially American) for a salt works or saltern Places United States * Saline City, former name of ghost town Drawbridge, California * Saline, Louisiana, a village * Saline, Michigan, a city * La Saline, Missouri, an abandoned village * Saline, Texas, an unincorporated community * Saline Bayou, Winn Parish, Louisiana * Saline Branch, a tributary of the Vermilion River in Illinois * Saline City, Indiana * Saline City, Missouri * Saline County (other), several counties * Saline Creek (other), several streams in Missouri * Saline Island (Kentucky), on the National Register of Historic Places * Saline Range, a mountain range in California * Saline River (other), several rivers, all but one in the United States * Saline Township (other), several townships * Sali ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Library Of Ukraine
The Vernadsky National Library of Ukraine, VNLU () is the main academic library and main scientific information centre in Ukraine, one of the world's largest national libraries. Its main building is located in the capital of the country—Kyiv, in the Demiivka neighborhood. The library contains about 15 million items. The library has the most complete collection of Slavic writing, archives of outstanding world and Ukrainian scientists and cultural persons. The holdings include the collection of the presidents of Ukraine, archive copies of Ukrainian printed documents from 1917, and the archives of the National Academy of Sciences of Ukraine. History The Vernadsky National Library of Ukraine was established on 2 August 1918 by Hetman Pavlo Skoropadskyi as the "National Library of the Ukrainian State" (''Natsionalna biblioteka Ukrayinskoyi Derzhavy''). On 23 August 1918 the Provisional Committee on creation of the National Library was established; it was headed by Vladimi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bird Migration
Bird migration is a seasonal movement of birds between breeding and wintering grounds that occurs twice a year. It is typically from north to south or from south to north. Animal migration, Migration is inherently risky, due to predation and mortality. The Arctic tern holds the long-distance migration record for birds, travelling between Arctic breeding grounds and the Antarctic each year. Some species of Procellariiformes, tubenoses, such as albatrosses, circle the Earth, flying over the southern oceans, while others such as Manx shearwaters migrate between their northern breeding grounds and the southern ocean. Shorter migrations are common, while longer ones are not. The shorter migrations include altitudinal migrations on mountains, including the Andes and Himalayas. The timing of migration seems to be controlled primarily by changes in day length. Migrating birds navigate using celestial cues from the Sun and stars, the Earth's magnetic field, and mental maps. Histor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heavy Metals
upright=1.2, Crystals of lead.html" ;"title="osmium, a heavy metal nearly twice as dense as lead">osmium, a heavy metal nearly twice as dense as lead Heavy metals is a controversial and ambiguous term for metallic elements with relatively high density, densities, atomic weights, or atomic numbers. The criteria used, and whether metalloids are included, vary depending on the author and context and it has been argued that the term "heavy metal" should be avoided. A heavy metal may be defined on the basis of density, atomic number or chemical behaviour. More specific definitions have been published, none of which have been widely accepted. The definitions surveyed in this article encompass up to 96 out of the 118 known chemical elements; only mercury, lead and bismuth meet all of them. Despite this lack of agreement, the term (plural or singular) is widely used in science. A density of more than 5 g/cm3 is sometimes quoted as a commonly used criterion and is used in the b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pesticides
Pesticides are substances that are used to pest control, control pest (organism), pests. They include herbicides, insecticides, nematicides, fungicides, and many others (see table). The most common of these are herbicides, which account for approximately 50% of all pesticide use globally. Most pesticides are used as plant protection products (also known as crop protection products), which in general protect plants from weeds, fungi, or insects. In general, a pesticide is a Chemical substance, chemical or biological agent (such as a virus, bacterium, or entomopathogenic fungus, fungus) that deters, incapacitates, kills, or otherwise discourages pests. Target pests can include insects, plant pathogens, weeds, mollusca, molluscs, birds, mammals, fish, nematodes (roundworms), and microbes that destroy property, cause nuisance, spread disease, or are disease Vector (epidemiology), vectors. Along with these benefits, pesticides also have drawbacks, such as Pesticide poisoning, potent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anatidae
The Anatidae are the biological family (biology), family of water birds that includes ducks, goose, geese, and swans. The family has a cosmopolitan distribution, occurring on all the world's continents except Antarctica. These birds are adapted for aquatic locomotion, swimming, floating on the water surface, and, in some cases, diving in at least shallow water. The family contains around 174 species in 43 genus, genera (the magpie goose is no longer considered to be part of the Anatidae and is now placed in its own family, Anseranatidae). They are generally herbivorous and are monogamy in animals, monogamous breeders. A number of species undertake bird migration, annual migrations. A few species have been domesticated for agriculture, and many others are hunted for food and recreation. Five species have become extinct since 1600, and many more are threatened with extinction. Description and ecology The ducks, geese, and swans are small- to large-sized birds with a broad and elo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
