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Dzierzbia River
Dzierzbia is a small river in north-eastern Poland, flowing within the administrative district of Gmina Stawiski in Kolno County, Podlaskie Voivodeship. It is being fed by several local streams. Dzierzbia is a right-tributary of another small river called Skroda, which begins near the village of Andrychy and empties into Pisa river near the town of Rudka-Skroda. In 2001, a nature reserve has been established along Dzierzbia. It is called the Rezerwat "Uroczysko Dzierzbia" (Uroczysko Dzierzbia Nature Reserve, or Dzierzbia River Wilderness Reserve), located also within Gmina Stawiski. The reserve has been created for the protection of deciduous forest with a high level of natural purity. Main ecosystems include ash-alder wetlands (Circaeo-Alnetum), chickweed-alder wetlands (Stellario - Alnetum), European Fen-Alder (Carici elongatae-Alnetum), typical broadleaf forest (Tilio-Carpinetum), mixed forest (Melitti-Carpinetum), and bright oak wood (Potentillo albae - Quercetum). The Ur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ash (tree)
''Fraxinus'' (), commonly called ash, is a genus of flowering plants in the olive and lilac family, Oleaceae. It contains 45–65 species of usually medium to large trees, mostly deciduous, though a number of subtropical species are evergreen. The genus is widespread across much of Europe, Asia, and North America. The leaves are opposite (rarely in whorls of three), and mostly pinnately compound, though simple in a few species. The seeds, popularly known as "keys" or "helicopter seeds", are a type of fruit known as a samara. Some ''Fraxinus'' species are dioecious, having male and female flowers on separate plants but sex in ash is expressed as a continuum between male and female individuals, dominated by unisexual trees. With age, ash may change their sexual function from predominantly male and hermaphrodite towards femaleness ; if grown as an ornamental and both sexes are present, ashes can cause a considerable litter problem with their seeds. Rowans or mountain ashes hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nature Reserves In Poland
Nature reserves in Poland ( pl, rezerwaty przyrody w Polsce) cover a total area of , representing 0.53% of the territory of Poland. As of 2011, Poland has 1469 nature reserves. The total area of the nature reserves in Poland has expanded since 1980 when they covered only about . By 1990 this increased to (0.37% of the territory of Poland) Their number has also expanded (in 2000 they numbered 1307). However, the area of the natural reserves under strict protection (''pod ochroną ścisłą'') has decreased from in 1990 to as of 2011. The area of nature reserves in Poland was highest around in 2008, when they approached . Nature reserves in Poland are divided into: fauna (141), landscape (108), forest (722), peat-bog (177), flora (169), water (44), inanimate nature (72), steppe (32) and halophyte (4). Another division is into the regular and strict nature reserves; the strict ones see no human activity, whereas the regular one see limited maintenance. According to Łonkiewicz, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geography Of Poland
Poland ( pl, Polska) is a country that extends across the North European Plain from the Sudetes and Carpathian Mountains in the south to the sandy beaches of the Baltic Sea in the north. Poland is the fifth-most populous country of the European Union and the ninth-largest country in Europe by area. The territory of Poland covers approximately , of which 98.52% is land and 1.48% is water. The Polish coastline was estimated at in length. Poland's highest point is Mount Rysy, at . Topographically, Poland is a diverse country; although most of the central terrain is flat, there is an abundance of lakes, rivers, hills, swamps, beaches, islands and forests elsewhere. The Baltic coast has two natural harbours, the larger situated in the Gdańsk-Gdynia region, and the smaller near Szczecin in the far northwest. The northeastern region, also known as the Masurian Lake District with more than 2,000 lakes, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Rivers Of Poland
Following is a list of rivers, which are at least partially, if not predominantly located within Poland.KSNG (2002–2014)List of Names of Flowing Waters (Wykaz nazw wód płynacych)(PDF file, direct download 1.47 MB), Komisja Standaryzacji Nazw Geograficznych poza Granicami Rzeczypospolitej Polskiej: Nazwy geograficzne. Pages: 1/348. , p. 85-86 Rivers by length ''For list of rivers in alphabetical order, please use table-sort buttons.'' |
Mixed Forest
Temperate broadleaf and mixed forest is a temperate climate terrestrial habitat type defined by the World Wide Fund for Nature, with broadleaf tree ecoregions, and with conifer and broadleaf tree mixed coniferous forest ecoregions. These forests are richest and most distinctive in central China and eastern North America, with some other globally distinctive ecoregions in the Caucasus, the Himalayas, Southern Europe, Australasia, Southwestern South America and the Russian Far East. Ecology The typical structure of these forests includes four layers. * The uppermost layer is the canopy composed of tall mature trees ranging from high. Below the canopy is the three-layered, shade-tolerant understory that is roughly shorter than the canopy. * The top layer of the understory is the sub-canopy composed of smaller mature trees, saplings, and suppressed juvenile canopy layer trees awaiting an opening in the canopy. * Below the sub-canopy is the shrub layer, composed of low gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alder
Alders are trees comprising the genus ''Alnus'' in the birch family Betulaceae. The genus comprises about 35 species of monoecious trees and shrubs, a few reaching a large size, distributed throughout the north temperate zone with a few species extending into Central America, as well as the northern and southern Andes. Description With a few exceptions, alders are deciduous, and the leaves are alternate, simple, and serrated. The flowers are catkins with elongate male catkins on the same plant as shorter female catkins, often before leaves appear; they are mainly wind-pollinated, but also visited by bees to a small extent. These trees differ from the birches (''Betula'', another genus in the family) in that the female catkins are woody and do not disintegrate at maturity, opening to release the seeds in a similar manner to many conifer cones. The largest species are red alder (''A. rubra'') on the west coast of North America, and black alder (''A. glutinosa''), nat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chickweed
''Stellaria media'', chickweed, is an annual and perennial flowering plant in the family Caryophyllaceae.Fernald, M. L. 1950. “Gray's Manual of Botany”. Eight Edition. American Book Company, New York, NY. 1632 pp. It is native to Eurasia and naturalized throughout the world. This species is used as a cooling herbal remedy, and grown as a vegetable crop and ground cover for both human and poultry consumption. It is sometimes called common chickweed to distinguish it from other plants called chickweed. Other common names include chickenwort, craches, maruns, and winterweed. The plant germinates in autumn or late winter, then forms large mats of foliage. Description This species is an annual in colder climates, becoming evergreen and perennial in warmer zones, with weak slender stems, up to . Plants are sparsely hairy. ''Stellaria media'' has one line of fine hairs on the stem. The leaves are oval and opposite, the lower ones with stalks. Flowers are white and small with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wetland
A wetland is a distinct ecosystem that is flooded or saturated by water, either permanently (for years or decades) or seasonally (for weeks or months). Flooding results in oxygen-free (anoxic) processes prevailing, especially in the soils. The primary factor that distinguishes wetlands from terrestrial land forms or Body of water, water bodies is the characteristic vegetation of aquatic plants, adapted to the unique anoxic hydric soils. Wetlands are considered among the most biologically diverse of all ecosystems, serving as home to a wide range of plant and animal species. Methods for assessing wetland functions, wetland ecological health, and general wetland condition have been developed for many regions of the world. These methods have contributed to wetland conservation partly by raising public awareness of the functions some wetlands provide. Wetlands occur naturally on every continent. The water in wetlands is either freshwater, brackish or saltwater. The main wetland typ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alder
Alders are trees comprising the genus ''Alnus'' in the birch family Betulaceae. The genus comprises about 35 species of monoecious trees and shrubs, a few reaching a large size, distributed throughout the north temperate zone with a few species extending into Central America, as well as the northern and southern Andes. Description With a few exceptions, alders are deciduous, and the leaves are alternate, simple, and serrated. The flowers are catkins with elongate male catkins on the same plant as shorter female catkins, often before leaves appear; they are mainly wind-pollinated, but also visited by bees to a small extent. These trees differ from the birches (''Betula'', another genus in the family) in that the female catkins are woody and do not disintegrate at maturity, opening to release the seeds in a similar manner to many conifer cones. The largest species are red alder (''A. rubra'') on the west coast of North America, and black alder (''A. glutinosa''), nat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
