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Mareca Falcata
The falcated duck or falcated teal (''Mareca falcata'') is a gadwall-sized dabbling duck from the east Palearctic (East Siberia and Mongolia to North Japan; wintering to India). Taxonomy The closest relative of this species is the gadwall, followed by the wigeons. The species was assigned to the proposed genus ''Mareca'' after its previous placement in the genus ''Anas'' was found to be paraphyletic in 2009. There are many species that have mitochondrial DNA lineages that are phylogenetically intermixed with other species, but studies have rarely tested the cause of such paraphyly. In a study that was conducted, there were tested two hypotheses that could explain mitochondrial paraphyly of Holarctic gadwalls (''Anas strepera'') with respect to Asian falcated ducks (''A. falcata''). First, hybridization could have resulted in falcated duck mitochondrial DNA (mtDNA) introgressing into the gadwall gene pool. Second, gadwalls and falcated ducks could have diverged so recently that m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Gottlieb Georgi
Johann Gottlieb Georgi (31 December 1729 – 27 October 1802) was a German-Russian botanist, naturalist and geographer. A native of Pomerania, Georgi accompanied both Johan Peter Falk and Peter Simon Pallas on their respective journeys through Siberia. During 1770-1774 he travelled on its behalf to Astrakhan, the Urals, Bashkir, the Barabinsk steppe, the Kolyvanskoe silver mines (to assess the ore content), Altai, Tomsk, Irkutsk, Baikal, and Dauren. In 1783 he became an academician of the Russian Academy of Sciences in St Petersburg. Georgi was particularly interested in the Baikal region. Based on collections from far eastern Russia, in his 1775 publication ''Bemerkungen einer Reise im Russischen Reich im Jahre 1772'', Georgi provided the first botanical descriptions of many of the region's flowering plants, among them the Baikal skullcap (''Scutellaria baicalensis''). Many of these plants and herbs were later collected by European botanists in China, and thereafter becam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuva
Tuva (; ) or Tyva (; ), officially the Republic of Tyva,; , is a Republics of Russia, republic of Russia. Tuva lies at the geographical center of Asia, in southern Siberia. The republic borders the Federal subjects of Russia, federal subjects of the Altai Republic, Buryatia, Irkutsk Oblast, Khakassia, and Krasnoyarsk Krai, and shares an international border with Mongolia to the south. Tuva has a population of 336,651 (Russian Census (2021), 2021 census). Its capital city is Kyzyl, in which more than a third of the population reside. Historically part of Outer Mongolia as Tannu Uriankhai during the Qing dynasty, the last imperial dynasty of China, Tuva broke away in 1911 as the Uryankhay Republic following the 1911 Revolution, Xinhai Revolution, which created the Republic of China (1912–1949), Republic of China. It became a Uryankhay Krai, Russian protectorate in 1914 and was replaced by the nominally independent Tuvan People's Republic in 1921 (known officially as Tannu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bihar
Bihar ( ) is a states and union territories of India, state in Eastern India. It is the list of states and union territories of India by population, second largest state by population, the List of states and union territories of India by area, 12th largest by area, and the List of Indian states and union territories by GDP, 14th largest by GDP in 2024. Bihar borders Uttar Pradesh to its west, Nepal to the north, the northern part of West Bengal to the east, and Jharkhand to the south. Bihar is split by the river Ganges, which flows from west to east. On 15 November 2000, a large chunk of southern Bihar was ceded to form the new state of Jharkhand. Around 11.27% of Bihar's population live in urban areas as per a 2020 report. Additionally, almost 58% of Bihari people, Biharis are below the age of 25, giving Bihar the highest proportion of young people of any Indian state. The official language is Hindi, which shares official status alongside that of Urdu. The main native languag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uttar Pradesh
Uttar Pradesh ( ; UP) is a States and union territories of India, state in North India, northern India. With over 241 million inhabitants, it is the List of states and union territories of India by population, most populated state in India as well as the List of first-level administrative divisions by population, most populous country subdivision in the world – more populous than List of countries and dependencies by population, all but four other countries outside of India (China, United States, Indonesia, and Pakistan) – and accounting for 16.5 percent of the population of India or around 3 percent of the total world population. The state is bordered by Rajasthan to the west, Haryana, Himachal Pradesh and Delhi to the northwest, Uttarakhand and Nepal to the north, Bihar to the east, Madhya Pradesh, Chhattisgarh and Jharkhand to the south. It is the List of states of India by area, fourth-largest Indian state by area covering , accounting for 7.3 percent of the total ... [...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] |
Dabbling Duck
The Anatinae are a subfamily of the family Anatidae (swans, geese and ducks). Its surviving members are the dabbling ducks, which feed mainly at the surface rather than by diving. The other members of the Anatinae are the extinct moa-nalo, a young but highly apomorphic lineage derived from the dabbling ducks. There has been much debate about the systematical status and which ducks belong to the Anatinae. Some taxonomic authorities only include the dabbling ducks and their close relatives, the extinct moa-nalos. Alternatively, the Anatinae are considered to include most "ducks", and the dabbling ducks form a tribe Anatini within these. The classification as presented here more appropriately reflects the remaining uncertainty about the interrelationships of the major lineages of Anatidae (waterfowl). Systematics The dabbling duck group, of worldwide distribution, was delimited in a 1986 study to include eight genera and some 50–60 living species. However, Salvadori's teal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kuril Islands
The Kuril Islands or Kurile Islands are a volcanic archipelago administered as part of Sakhalin Oblast in the Russian Far East. The islands stretch approximately northeast from Hokkaido in Japan to Kamchatka Peninsula in Russia, separating the Sea of Okhotsk from the north Pacific Ocean. There are 56 islands and many minor islets. The Kuril Islands consist of the Greater Kuril Chain and, at the southwest end, the parallel Lesser Kuril Chain. The group termed the 'South Kurils' consists of those of the Lesser Kuril Chain together with Kunashir and Iturup in the Greater Kuril Chain. The Vries Strait between Iturup and Urup forms the Miyabe Line dividing the North and South Kurils. The Kuril Islands cover an area of around , with a population of roughly 20,000. The islands have been under Russian administration since their Invasion of the Kuril Islands, 1945 invasion by the Soviet Union near the end of World War II. Japan claims the four southernmost islands, including two of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aomori Prefecture
is a Prefectures of Japan, prefecture of Japan in the Tōhoku region. The prefecture's capital, largest city, and namesake is the city of Aomori (city), Aomori. Aomori is the northernmost prefecture on Japan's main island, Honshu, and is bordered by the Pacific Ocean to the east, Iwate Prefecture to the southeast, Akita Prefecture to the southwest, the Sea of Japan to the west, and Hokkaido across the Tsugaru Strait to the north. Aomori Prefecture is the List of Japanese prefectures by area, 8th-largest prefecture, with an area of , and the List of Japanese prefectures by population, 31st-most populous prefecture, with more than 1.18 million people. Approximately 45 percent of Aomori Prefecture's residents live in its two Core cities of Japan, core cities, Aomori and Hachinohe, which lie on coastal plains. The majority of the prefecture is covered in forested mountain ranges, with population centers occupying valleys and plains. Aomori is the third-most populous prefecture i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hokkaidō
is the second-largest island of Japan and comprises the largest and northernmost prefecture, making up its own region. The Tsugaru Strait separates Hokkaidō from Honshu; the two islands are connected by railway via the Seikan Tunnel. The largest city on Hokkaido is its capital, Sapporo, which is also its only ordinance-designated city. Sakhalin lies about to the north of Hokkaidō, and to the east and northeast are the Kuril Islands, which are administered by Russia, though the four most southerly are claimed by Japan. The position of the island on the northern end of the archipelago results in a colder climate, with the island seeing significant snowfall each winter. Despite the harsher climate, it serves as an agricultural breadbasket for many crops. Hokkaido was formerly known as '' Ezo'', ''Yezo'', ''Yeso'', or ''Yesso''. Nussbaum, Louis-Frédéric. (2005). "Hokkaidō" in Although Japanese settlers ruled the southern tip of the island since the 16th century, Hok ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heilongjiang
Heilongjiang is a province in northeast China. It is the northernmost and easternmost province of the country and contains China's northernmost point (in Mohe City along the Amur) and easternmost point (at the confluence of the Amur and Ussuri rivers). The province is bordered by Jilin to the south and Inner Mongolia to the west. It also shares a border with Russia ( Amur Oblast, Jewish Autonomous Oblast, Khabarovsk Krai, Primorsky Krai and Zabaykalsky Krai) to the north and east. The capital and the largest city of the province is Harbin. Among Chinese provincial-level administrative divisions, Heilongjiang is the sixth-largest by total area, the 20th-most populous, and the second-poorest by GDP per capita after only Gansu province. The province takes its name from the Amur river which marks the border between the People's Republic of China and Russia. Heilongjiang has significant agricultural production, and raw materials, such as timber, oil, and coal. Etymology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inner Mongolia
Inner Mongolia, officially the Inner Mongolia Autonomous Region, is an Autonomous regions of China, autonomous region of China. Its border includes two-thirds of the length of China's China–Mongolia border, border with the country of Mongolia. Inner Mongolia also accounts for a small section of China's China–Russia border, border with Russia (Zabaykalsky Krai). Its capital is Hohhot; other major cities include Baotou, Chifeng, Tongliao, and Ordos City, Ordos. The autonomous region was established in 1947, incorporating the areas of the former Republic of China (1912–1949), Republic of China provinces of Suiyuan, Chahar Province, Chahar, Rehe Province, Rehe, Liaobei, and Xing'an Province, Xing'an, along with the northern parts of Gansu and Ningxia. Its area makes it the List of Chinese administrative divisions by area, third largest Chinese administrative subdivision, constituting approximately and 12% of China's total land area. Due to its long span from east to west, Inn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Korea
North Korea, officially the Democratic People's Republic of Korea (DPRK), is a country in East Asia. It constitutes the northern half of the Korea, Korean Peninsula and borders China and Russia to the north at the Yalu River, Yalu (Amnok) and Tumen River, Tumen rivers, and South Korea to the south at the Korean Demilitarized Zone, Korean Demilitarized Zone (DMZ). The country's western border is formed by the Yellow Sea, while its eastern border is defined by the Sea of Japan. North Korea, like South Korea, claims to be the sole legitimate government of the entire peninsula and List of islands of North Korea, adjacent islands. Pyongyang is the capital and largest city. The Korean Peninsula was first inhabited as early as the Lower Paleolithic period. Its Gojoseon, first kingdom was noted in Chinese records in the early 7th century BCE. Following the unification of the Three Kingdoms of Korea into Unified Silla, Silla and Balhae in the late 7th century, Korea was ruled by the G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
