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Red River Delta Biosphere Reserve
The Red River Delta Biosphere Reserve (established 2004) is a UNESCO biosphere reserve in the coastal region of northern Vietnam. Mangroves and intertidal habitats of the Red River Delta form wetlands of high biodiversity especially in the Xuan Thuy and Tien Hai districts. These wetlands are of global importance as migratory sites for several bird species. The reserve's surface area (terrestrial and marine) is . The core area is , of which is terrestrial and is marine, surrounded by buffer zone(s) of ( terrestrial, marine) and transition area(s) of ( terrestrial, marine). Ecological characteristics The Red River basin is shared by China, Laos and Vietnam. The main Red River is approximately in length and covers over in Vietnam. The coastal areas of the Red River Delta support a complex system of natural, semi-natural and agricultural vegetation types. The natural vegetation consists mainly of salt tolerant species and plant communities, including mangrove, salt marsh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red River Delta
The Red River Delta or Hong River Delta ( vi, Châu thổ sông Hồng) is the flat low-lying plain formed by the Red River and its distributaries merging with the Thái Bình River in northern Vietnam. ''Hồng'' (紅) is a Sino-Vietnamese word for "red" or "crimson." The delta has the smallest area but highest population and population density of all regions. The region, measuring some is well protected by a network of dikes. It is an agriculturally rich and densely populated area. Most of the land is devoted to rice cultivation. Eight provinces together with two municipalities, the capital Hanoi, and the port Haiphong form the delta. It has a population of almost 23 million in 2019. In 2021, Paul Sidwell proposed that the locus of Proto-Austroasiatic languages was in this area about 4,000–4,500 years before present.Sidwell, Paul. 2021''Austroasiatic Dispersal: the AA "Water-World" Extended'' The Hong River Delta is the cradle of the Vietnamese nation. Water puppetry ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kandelia Candel
''Kandelia candel'' is a species of mangrove in the family Rhizophoraceae, found around the coasts of South Asia and Southeast Asia, from western India to Borneo. Populations further east, from Vietnam to Japan were formerly included in ''K. candel'', but are now considered a separate species, '' K. obovata''. Description ''Kandelia candel'' grows as a shrub or small tree up to tall. Its flaky bark is lenticellate and coloured greyish to reddish brown. The flowers are white. The ovoid An oval () is a closed curve in a plane which resembles the outline of an egg. The term is not very specific, but in some areas (projective geometry, technical drawing, etc.) it is given a more precise definition, which may include either one or ... fruits measure up to long. References Mangroves Rhizophoraceae Flora of tropical Asia Plants described in 1753 Taxa named by Carl Linnaeus {{Malpighiales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ramsar Convention
The Ramsar Convention on Wetlands of International Importance Especially as Waterfowl Habitat is an international treaty for the conservation and sustainable use of Ramsar sites (wetlands). It is also known as the Convention on Wetlands. It is named after the city of Ramsar in Iran, where the convention was signed in 1971. Every three years, representatives of the contracting parties meet as the Conference of the Contracting Parties (COP), the policy-making organ of the convention which adopts decisions (resolutions and recommendations) to administer the work of the convention and improve the way in which the parties are able to implement its objectives. COP12 was held in Punta del Este, Uruguay, in 2015. COP13 was held in Dubai, United Arab Emirates, in October 2018. List of wetlands of international importance The list of wetlands of international importance included 2,331 Ramsar sites in May 2018 covering over . The countries with most sites are the United Kingdo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seacow
The Sirenia (), commonly referred to as sea-cows or sirenians, are an order of fully aquatic, herbivorous mammals that inhabit swamps, rivers, estuaries, marine wetlands, and coastal marine waters. The Sirenia currently comprise two distinct families: Dugongidae (the dugong and the now extinct Steller's sea cow) and Trichechidae (manatees, namely the Amazonian manatee, West Indian manatee, and West African manatee) with a total of four species. The Protosirenidae (Eocene sirenians) and Prorastomidae (terrestrial sirenians) families are extinct. Sirenians are classified in the clade Paenungulata, alongside the elephants and the hyraxes, and evolved in the Eocene 50 million years ago (mya). The Dugongidae diverged from the Trichechidae in the late Eocene or early Oligocene (30–35 mya). Sirenians grow to between in length and in weight. The historic Steller's sea cow was the largest known sirenian to have lived, and could reach lengths of and weights of . Sirenians have a la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crocodile
Crocodiles (family (biology), family Crocodylidae) or true crocodiles are large semiaquatic reptiles that live throughout the tropics in Africa, Asia, the Americas and Australia. The term crocodile is sometimes used even more loosely to include all extant taxon, extant members of the order (biology), order Crocodilia, which includes the alligators and caimans (family Alligatoridae), the gharial and false gharial (family Gavialidae) among other extinct taxa. Although they appear similar, crocodiles, alligators and the gharial belong to separate biological family (biology), families. The gharial, with its narrow snout, is easier to distinguish, while Morphology (biology), morphological differences are more difficult to spot in crocodiles and alligators. The most obvious external differences are visible in the head, with crocodiles having narrower and longer heads, with a more V-shaped than a U-shaped snout compared to alligators and caimans. Another obvious trait is that the upp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japanese Paradise Flycatcher
The Japanese paradise flycatcher (''Terpsiphone atrocaudata''), also called the black paradise flycatcher, is a medium-sized passerine bird native to southeastern Asia. It is a glossy black, chestnut and white bird, slightly smaller than either the Amur paradise flycatcher or Blyth's paradise flycatcher, but similar in appearance. Males have exceptionally long tails. Females are generally duller in appearance and have shorter tails. It is a migratory species, breeding in Japan, South Korea, Taiwan and the far north of the Philippines. Outside the breeding season it migrates to China, Thailand, Laos, Vietnam, other parts of the Philippines, Malaysia, Singapore, and Sumatra, Indonesia. Taxonomy and systematics The Japanese paradise flycatcher was previously classified with the Old World flycatcher family Muscicapidae, but the paradise-flycatchers, monarch flycatchers and Australasian fantails are now normally grouped with the drongos in the family Dicruridae, which has most of i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black-headed Ibis
The black-headed ibis (''Threskiornis melanocephalus''), also known as the Oriental white ibis, Indian white ibis, and black-necked ibis, is a species of wading bird of the ibis family Threskiornithidae which breeds in the South and Southeast Asia from India to the west and as far east as Japan. It is the only native ibis species in its range that has an overall white plumage with a black neck and head. The down-curved beak and legs are also black. Though often referred to as a wetland species, the black-headed ibis forages in a range of natural and man-made habitats. This species of ibis nests only during the rainy season. Description The black-headed ibis is one of several large waterbird species in south and south-east Asia, with adults measuring 65–76 cm in length. The white plumage is starkly contrasted against a conspicuous naked black neck and head, and black down-curved beak. Tails of adults bear light grey ornamental feathers that turn jet black during the breed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spoonbill Sandpiper
The spoon-billed sandpiper (''Calidris pygmaea'') is a small wader which breeds on the coasts of the Bering Sea and winters in Southeast Asia. This species is highly threatened, and it is said that since the 1970s the breeding population has decreased significantly. By 2000, the estimated breeding population of the species was 350–500. Taxonomy ''Platalea pygmea'' was the scientific name proposed by Carl Linnaeus in 1758. It was moved to ''Eurynorhynchus'' by Sven Nilsson in 1821. It is now classified under the calidrid sandpipers. Description The most distinctive feature of this species is its spatulate bill. The breeding adult bird is 14–16 cm in length, and has a red-brown head, neck and breast with dark brown streaks. It has blackish upperparts with buff and pale rufous fringing. Non-breeding adults lack the reddish colouration, but have pale brownish-grey upperparts with whitish fringing to the wing-coverts. The underparts are white and the legs are black.Bir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonneratia Caseolaris
''Sonneratia caseolaris'', commonly known as mangrove apple, is a species of plant in the family Lythraceae. The fruit is noted for its outward similarity to the persimmon fruit. This tree is a type of mangrove growing up to 20 m in height and with a trunk reaching a maximum diameter of 50 cm. It is present in tropical tidal mud flats from Africa to Indonesia, southwards down to northeast Australia and New Caledonia and northwards up to Hainan Island in China and the Philippines. The fruit of this tree is the subject of a legend of Maldivian folklore, ''Kulhlhavah Falhu Rani''. Kuhlhavah (ކުއްޅަވައް) is the Dhivehi name for the mangrove apple (Sonneratia caseolaris). The tree is associated with congregating fireflies throughout southeast Asia and is the food source of moth and other insects. Uses The leaves and the fruit are edible and appreciated as food in certain areas, such as Maldives. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terrestrial Ecosystem
Terrestrial ecosystems are ecosystems which are found on land. Examples include tundra, taiga, temperate deciduous forest, tropical rain forest, grassland, deserts. Terrestrial ecosystems differ from aquatic ecosystems by the predominant presence of soil rather than water at the surface and by the extension of plants above this soil/water surface in terrestrial ecosystems. There is a wide range of water availability among terrestrial ecosystems (including water scarcity in some cases), whereas water is seldom a limiting factor to organisms in aquatic ecosystems. Because water buffers temperature fluctuations, terrestrial ecosystems usually experience greater diurnal and seasonal temperature fluctuations than do aquatic ecosystems in similar climates. Terrestrial ecosystems are of particular importance especially in meeting Sustainable Development Goal 15 that targets the conservation-restoration and sustainable use of terrestrial ecosystems. Organisms and processes Organis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vietnam
Vietnam or Viet Nam ( vi, Việt Nam, ), officially the Socialist Republic of Vietnam,., group="n" is a country in Southeast Asia, at the eastern edge of mainland Southeast Asia, with an area of and population of 96 million, making it the world's sixteenth-most populous country. Vietnam borders China to the north, and Laos and Cambodia to the west. It shares maritime borders with Thailand through the Gulf of Thailand, and the Philippines, Indonesia, and Malaysia through the South China Sea. Its capital is Hanoi and its largest city is Ho Chi Minh City (commonly known as Saigon). Vietnam was inhabited by the Paleolithic age, with states established in the first millennium BC on the Red River Delta in modern-day northern Vietnam. The Han dynasty annexed Northern and Central Vietnam under Chinese rule from 111 BC, until the first dynasty emerged in 939. Successive monarchical dynasties absorbed Chinese influences through Confucianism and Buddhism, and expanded ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Ecosystem
Marine ecosystems are the largest of Earth's aquatic ecosystems and exist in waters that have a high salt content. These systems contrast with freshwater ecosystems, which have a lower salt content. Marine waters cover more than 70% of the surface of the Earth and account for more than 97% of Earth's water supply and 90% of habitable space on Earth. Seawater has an average salinity of 35 parts per thousand of water. Actual salinity varies among different marine ecosystems. Marine ecosystems can be divided into many zones depending upon water depth and shoreline features. The oceanic zone is the vast open part of the ocean where animals such as whales, sharks, and tuna live. The benthic zone consists of substrates below water where many invertebrates live. The intertidal zone is the area between high and low tides. Other near-shore (neritic) zones can include mudflats, seagrass meadows, mangroves, rocky intertidal systems, salt marshes, coral reefs, lagoons. In the deep water, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
