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Bolboschoenus Planiculmis
''Bolboschoenus planiculmis'' is a species of flowering plant in the sedge family Cyperaceae. It sprouts from tubers or seeds from April to May and flowers between May and July, with the aboveground biomass dying back in October. It is distributed in estuaries across and throughout East Asia, Central Asia, and Central Europe with small populations reported in Western European countries such as the Netherlands. ''B. planiculmis'' can be identified by its bifid styles as opposed to the trifid styles which are found on all other Bolboschoenus species in Europe. Ecology ''Bolboschoenus planiculmis'' is a perennial clonal plant with a height of 20–100 centimeters that reproduces both sexually through seeds and asexually through vegetative propagation. As the fruits of ''B. planiculmis'' are floatable, it has been suggested that spreading after floods is a possible means of distribution. ''Bolboschoenus planiculmis'' is a key wetland plant in many areas. Although it is a glycop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Friedrich Schmidt (geologist)
Carl Friedrich Schmidt (russian: Фёдор Богданович Шмидт, Fyodor Bogdanovich Schmidt; also known as Friedrich Schmidt; in Kaisma, Livonia – in Saint Petersburg) was a Baltic German geologist and botanist in the Russian Empire. He is acknowledged as the founder of Estonian geology. In the mid-19th century, he researched Estonian oil shale, kukersite, and named it as kuckers. Main papers of Friedrich Schmidt research the stratigraphy and fauna of Lower Palaeozoic rocks in Estonia and the neighboring areas. In 1885 he became academician of St. Petersburg Academy of Sciences. He won the Wollaston Medal, awarded by the Geological Society of London, in 1902. Friedrich Schmidt was the first European to "discover" the Sakhalin Fir on the Russian island of Sakhalin in 1866, but he did not introduce it to Europe. The Schmidt Peninsula (Sakhalin) Schmidt Peninsula (russian: Полуостров Шмидта) is a peninsula in Sakhalin Oblast, Russian Federati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bolboschoenus Yagara
''Bolboschoenus yagara'' is a species of flowering plant in the sedge family Cyperaceae. It is a perennial clonal herb, 0.8 to 1.3 meters tall, and develops underground rhizomes that terminate in spherical or ellipsoid tubers that are up to 3-4 centimeters in diameter. It is able to propagate asexually through the tubers, as well as sexually by seeds. Classification ''Bolboschoenus yagara'' is predominantly found in China and East Asia, with a fossilized specimen dated from the Late Pliocene period discovered in Shanxi, China. Populations that were previously believed to be ''Bolboschoenus maritimus'' have been identified in Central Europe since 1996, with additional populations reported in Poland in 2006. The classification of ''Bolboschoenus yagara'' as a distinct species from ''Bolboschoenus maritimus'' was based on the morphology of the inflorescence, glumes, spikelets, and achenes. ''Bolboschoenus yagara'' has compound, or, rarely, head-like inflorescence with three to ei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bolboschoenus
''Bolboschoenus'' is a genus of plants in the sedge family, of nearly cosmopolitan distribution. Epipaleolithic and Neolithic peoples used ground root tubers of these plants to make the first breads. ; Accepted species * ''Bolboschoenus caldwellii'' (V.J.Cook) Soják - Australia, New Zealand * '' Bolboschoenus capensis'' (Burm.f.) Holub - Cape Province of South Africa * '' Bolboschoenus fluviatilis'' (Torr.) Soják - Australia, New Zealand, New Caledonia, Canada, United States, northeastern Mexico * '' Bolboschoenus glaucus'' (Lam.) S.G.Sm. - southern Europe, Africa, Middle East, Central Asia, India, Mongolia * '' Bolboschoenus grandispicus'' (Steud.) Lewej. & Lobin - coastal dunes in Senegal * '' Bolboschoenus laticarpus'' Marhold, Hroudová, Ducháček & Zákr - central Europe from Britain and France to Ukraine; Algeria, Turkey * '' Bolboschoenus maritimus'' (L.) Palla in W.D.J.Koch - widespread across much of temperate and subtropical Europe, Africa, Asia, North America, Sou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Asian–Australasian Flyway
The East Asian–Australasian Flyway is one of the world's great flyways. At its northernmost it stretches eastwards from the Taimyr Peninsula in Russia to Alaska. Its southern end encompasses Australia and New Zealand. Between these extremes the Flyway covers much of eastern Asia, including China, Japan, Korea, South-East Asia and the western Pacific. The EAAF is home to over 50 million migratory water birds from over 250 different populations, including 32 globally threatened species and 19 near threatened species. It is especially important for the millions of migratory waders or shorebirds that breed in northern Asia and Alaska and spend the non-breeding season in South-East Asia and Australasia. Flyway Site Network During migration, water birds rely on a system of highly productive wetlands to rest and feed, building up sufficient energy to fuel the next phase of their journey. International cooperation across their migratory range is therefore essential to conserve and pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swan Goose
The swan goose (''Anser cygnoides'') is a large goose with a natural breeding range in inland Mongolia, northernmost China, and the Russian Far East. It is migratory and winters mainly in central and eastern China. Vagrant birds are encountered in Japan and Korea (where it used to winter in numbers when it was more common), and more rarely in Kazakhstan, Laos, coastal Siberia, Taiwan, Thailand and Uzbekistan. While uncommon in the wild, this species has been domesticated. Introduced and feral populations of its domestic breeds occur in many places outside its natural range. The wild form is also kept in collections, and escapes are not unusual amongst feral flocks of other ''Anser'' and ''Branta'' geese. Description The swan goose is large and long-necked for its genus, wild birds being long (the longest ''Anser'' goose) and weighing or more (the second-heaviest ''Anser'', after the greylag goose, ''A. anser''). The sexes are similar, although the male is larger, with a prop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nakdong River
The Nakdonggang River or Nakdonggang () is the longest river in South Korea, and passes through major cities such as Daegu and Busan. It takes its name from its role as the eastern border of the Gaya confederacy during Korea's Three Kingdoms Era. Geography The Nakdonggang flows from the Taebaek Mountains to the South Sea or Korean Strait, which separates Korea from Japan. The river originates from the junction of the Cheolamcheon and Hwangjicheon streams in Dongjeom-dong, Taebaek city, Gangwon province. From there to its mouth it winds for about . The width of the river ranges from only a few metres in its upper reaches, to several hundred metres towards its estuary. Major tributaries include the Yeong, Geumho, and Nam rivers. Together with its tributaries, the Nakdonggang drains most of North Gyeongsang and South Gyeongsang provinces, along with small portions of North Jeolla, South Jeolla, and Gangwon. The total watershed is . History The Nakdonggang River has played an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siberian Crane
The Siberian crane (''Leucogeranus leucogeranus''), also known as the Siberian white crane or the snow crane, is a bird of the family Gruidae, the cranes. They are distinctive among the cranes: adults are nearly all snowy white, except for their black primary feathers that are visible in flight, and with two breeding populations in the Arctic tundra of western and eastern Russia. The eastern populations migrate during winter to China, while the western population winters in Iran and (formerly) in Bharatpur, India. Among the cranes, they make the longest distance migrations. Their populations, particularly those in the western range, have declined drastically in the 20th century due to hunting along their migration routes and habitat degradation. The world population was estimated in 2010 at about 3,200 birds, mostly belonging to the eastern population with about 95% of them wintering in the Poyang Lake basin in China, a habitat that may be altered by the Three Gorges Dam. Tax ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Songnen Plain
The Songnen Plain () in Northeast China is named after the Songhua and Nenjiang Rivers and is connected to the Sanjiang Plain through the Songhua River Valley; a small plain lies north of Xingkai Lake Lake Khanka (russian: о́зеро Ха́нка) or Lake Xingkai (), is a freshwater lake on the border between Primorsky Krai, Russia and Heilongjiang province, Northeast China (at ). Etymology On the Delisle map of 1706, the lake is name ... in the east. Salinization The alkali-saline area of the western Songnen Plain is one of China's most important alkali-saline areas and have been increasing in size by 20,000 square hm per year as a result of natural and anthropogenic factors, which is impeding economic development in the area. Efforts are being made to establish and protect shelterbelt forests, improve the management techniques used in the grasslands, to raise fish and reeds in the lakes of the region, and to improve the conditions of salinized lands. References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bolboschoenus Laticarpus
''Bolboschoenus'' is a genus of plants in the sedge family, of nearly cosmopolitan distribution. Epipaleolithic and Neolithic peoples used ground root tubers of these plants to make the first breads. ; Accepted species * ''Bolboschoenus caldwellii'' (V.J.Cook) Soják - Australia, New Zealand * '' Bolboschoenus capensis'' (Burm.f.) Holub - Cape Province of South Africa * ''Bolboschoenus fluviatilis'' (Torr.) Soják - Australia, New Zealand, New Caledonia, Canada, United States, northeastern Mexico * '' Bolboschoenus glaucus'' (Lam.) S.G.Sm. - southern Europe, Africa, Middle East, Central Asia, India, Mongolia * '' Bolboschoenus grandispicus'' (Steud.) Lewej. & Lobin - coastal dunes in Senegal * '' Bolboschoenus laticarpus'' Marhold, Hroudová, Ducháček & Zákr - central Europe from Britain and France to Ukraine; Algeria, Turkey * ''Bolboschoenus maritimus'' (L.) Palla in W.D.J.Koch - widespread across much of temperate and subtropical Europe, Africa, Asia, North America, Sout ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dimitri Ivanovich Litvinov
Dmitry Ivanovich Litvinov (russian: Дмитрий Иванович Литвинов; – 5 July 1929) was a Russian botanist responsible for the naming of a large variety of East European and Asian plants. He is known as the author of the concept of glacial refugia for the plants growing on chalk and limestone slopes of the banks of rivers in the European part of Russia. Together with Vasily Zinger, he discovered the natural monument Galichya Gora in Central Russia ( river Don) inhabited by relict plants. He graduated from the Imperial Moscow Technical School in 1879, receiving the degree of a construction mechanic specialist. Interested in botany, in 1898 he quit his job as a teacher at a technical school and became a curator and later a senior botanist at the Botanical Museum of the Academy of Sciences, where he worked until the end of his life. Alternative spelling of the names: Dimitri Ivanovitch Litvinov (in French); Dmitrij Iwanowitsch Litwinow (in German). [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glycophyte
A halophyte is a salt-tolerant plant that grows in soil or waters of high salinity, coming into contact with saline water through its roots or by salt spray, such as in saline semi-deserts, mangrove swamps, marshes and sloughs and seashores. The word derives from Ancient Greek ἅλας (halas) 'salt' and φυτόν (phyton) 'plant'. Halophytes have different anatomy, physiology and biochemistry than glycophytes.Physiology of halophytes, T. J. FLOWERS, Plant and Soil 89, 41-56 (1985) An example of a halophyte is the salt marsh grass ''Spartina alterniflora'' (smooth cordgrass). Relatively few plant species are halophytes—perhaps only 2% of all plant species. Information about many of the earth's halophytes can be found in thehalophdatabase. The large majority of plant species are glycophytes, which are not salt-tolerant and are damaged fairly easily by high salinity. Classification Halophytes can be classified in many ways. According to Stocker (1933), it is mainly of 3 kind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vegetative Propagation
Vegetative reproduction (also known as vegetative propagation, vegetative multiplication or cloning) is any form of asexual reproduction occurring in plants in which a new plant grows from a fragment or cutting of the parent plant or specialized reproductive structures, which are sometimes called vegetative propagules. Many plants naturally reproduce this way, but it can also be induced artificially. Horticulturists have developed asexual propagation techniques that use vegetative propagules to replicate plants. Success rates and difficulty of propagation vary greatly. Monocotyledons typically lack a vascular cambium, making them more challenging to propagate. Background Plant propagation is the process of plant reproduction of a species or cultivar, and it can be sexual or asexual. It can happen through the use of vegetative parts of the plants, such as leaves, stems, and roots to produce new plants or through growth from specialized vegetative plant parts. While man ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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