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Arctic Ecology
Arctic ecology is the scientific study of the relationships between biotic and abiotic factors in the arctic, the region north of the Arctic Circle (66° 33’N). This region is characterized by two biomes: taiga (or boreal forest) and tundra. While the taiga has a more moderate climate and permits a diversity of both non-vascular and vascular plants, the tundra has a limited growing season and stressful growing conditions due to intense cold, low precipitation, and a lack of sunlight throughout the winter. Sensitive ecosystems exist throughout the Arctic region, which are being impacted dramatically by global warming. The earliest hominid inhabitants of the Arctic were the Neanderthal sub-species. Since then, many indigenous populations have inhabited the region and continue to do so to this day. The Arctic is a valued area for ecological research. During the Cold War, the Arctic became a place where the United States, Canada, and the Soviet Union performed significant research ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arctic Sunset
The Arctic (; . ) is the polar region of Earth that surrounds the North Pole, lying within the Arctic Circle. The Arctic region, from the IERS Reference Meridian travelling east, consists of parts of northern Norway (Nordland, Troms, Finnmark, Svalbard and Jan Mayen), northernmost Sweden (Västerbotten, Norrbotten and Lappland), northern Finland (North Ostrobothnia, Kainuu and Lappi), Russia (Murmansk, Siberia, Nenets Okrug, Novaya Zemlya), the United States (Alaska), Canada (Yukon, Northwest Territories, Nunavut), Danish Realm (Greenland), and northern Iceland (Grímsey and Kolbeinsey), along with the Arctic Ocean and adjacent seas. Land within the Arctic region has seasonally varying snow and ice cover, with predominantly treeless permafrost under the tundra. Arctic seas contain seasonal sea ice in many places. The Arctic region is a unique area among Earth's ecosystems. The cultures in the region and the Arctic indigenous peoples have adapted to its cold and extreme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleistocene
The Pleistocene ( ; referred to colloquially as the ''ice age, Ice Age'') is the geological epoch (geology), epoch that lasted from to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in 2009 by the International Union of Geological Sciences, the cutoff of the Pleistocene and the preceding Pliocene was regarded as being 1.806 million years Before Present (BP). Publications from earlier years may use either definition of the period. The end of the Pleistocene corresponds with the end of the last glacial period and also with the end of the Paleolithic age used in archaeology. The name is a combination of Ancient Greek () 'most' and (; Latinized as ) 'new'. The aridification and cooling trends of the preceding Neogene were continued in the Pleistocene. The climate was strongly variable depending on the glacial cycle, oscillating between cold Glacial period, glacial periods and warmer Interglacial, int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Garrett Hardin
Garrett James Hardin (April 21, 1915 – September 14, 2003) was an American ecologist and microbiologist. He focused his career on the issue of human overpopulation, and is best known for his exposition of the tragedy of the commons in a 1968 paper of the same title in ''Science'', which called attention to "the damage that innocent actions by individuals can inflict on the environment". He is also known for Hardin's First Law of Human Ecology: "We can never do merely one thing. Any intrusion into nature has numerous effects, many of which are unpredictable." Hardin held hardline anti-immigrant positions as well as positions on eugenics and multiethnicism that have led multiple sources to label him a white nationalist. The Southern Poverty Law Center described his publications as "frank in their racism and quasi-fascist ethnonationalism". Biography Hardin received a BS in zoology from the University of Chicago in 1936 and a PhD in microbiology from Stanford University in 1941 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hudson's Bay Company
The Hudson's Bay Company (HBC), originally the Governor and Company of Adventurers of England Trading Into Hudson’s Bay, is a Canadian holding company of department stores, and the oldest corporation in North America. It was the owner of the namesake Hudson's Bay (department store), Hudson's Bay department stores (colloquially The Bay), and also owns or manages approximately of gross leasable real estate through its HBC Properties and Investments business unit. HBC previously owned the full-line Saks Fifth Avenue and off-price Saks Off 5th in the United States, which were spun-off into the Saks Global holding company in 2024. After incorporation by royal charter issued in 1670 by Charles II of England, King Charles II, the company was granted a right of "sole trade and commerce" over an expansive area of land known as Rupert's Land, comprising much of the Hudson Bay drainage basin. This right gave the company a monopoly, commercial monopoly over that area. The HBC functioned ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North West Company
The North West Company was a Fur trade in Canada, Canadian fur trading business headquartered in Montreal from 1779 to 1821. It competed with increasing success against the Hudson's Bay Company in the regions that later became Western Canada and Northwestern Ontario. With great wealth at stake, tensions between the companies increased to the point where several minor armed skirmishes broke out, and the two companies were forced by the British government to merge. Before the Company After the French landed in Quebec in 1608, independent French-Canadian traders commonly known as spread out and built a fur trade empire in the St. Lawrence River, St. Lawrence basin. The French competed with the Dutch (from 1614) and English (1664) in New York and the English in Hudson Bay (1670). Unlike the French who traveled into the northern interior and traded with First Nations in their camps and villages, the English made bases at trading posts on Hudson Bay, inviting the indigenous people t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Little Ice Age
The Little Ice Age (LIA) was a period of regional cooling, particularly pronounced in the North Atlantic region. It was not a true ice age of global extent. The term was introduced into scientific literature by François E. Matthes in 1939. Matthes described glaciers in the Sierra Nevada (U.S.), Sierra Nevada of California that he believed could not have survived the hypsithermal; his usage of "Little Ice Age" has been superseded by "Neoglaciation". The period has been conventionally defined as extending from the 16th to the 19th centuries, (noted in Grove 2004: 4). but some experts prefer an alternative time-span from about 1300 to about 1850. The NASA Earth Observatory notes three particularly cold intervals. One began about 1650, another about 1770, and the last in 1850, all of which were separated by intervals of slight warming. The Intergovernmental Panel on Climate Change IPCC Third Assessment Report, Third Assessment Report considered that the timing and the areas affecte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inuit
Inuit (singular: Inuk) are a group of culturally and historically similar Indigenous peoples traditionally inhabiting the Arctic and Subarctic regions of North America and Russia, including Greenland, Labrador, Quebec, Nunavut, the Northwest Territories, Yukon (traditionally), Alaska, and the Chukotsky District of Chukotka Autonomous Okrug. The Inuit languages are part of the Eskaleut languages, also known as Inuit-Yupik-Unangan, and also as Eskimo–Aleut. Canadian Inuit live throughout most of Northern Canada in the territory of Nunavut, Nunavik in the northern third of Quebec, the Nunatsiavut in Labrador, and in various parts of the Northwest Territories and Yukon (traditionally), particularly around the Arctic Ocean, in the Inuvialuit Settlement Region. These areas are known, by Inuit Tapiriit Kanatami and the Government of Canada, as Inuit Nunangat. In Canada, sections 25 and 35 of the Constitution Act of 1982 classify Inuit as a distinctive group of Abo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thule People
The Thule ( , ) or proto-Inuit were the ancestors of all modern Inuit. They developed in coastal Alaska by 1000 AD and expanded eastward across northern Canada, reaching Greenland by the 13th century. In the process, they replaced people of the earlier Dorset culture who had previously inhabited the region. The appellation " Thule" originates from the location of Thule (relocated and renamed Qaanaaq in 1953) in northwest Greenland, facing Canada, where the archaeological remains of the people were first found at Comer's Midden. Evidence supports the idea that the Thule (and, to a lesser degree, the Dorset) were in contact with the Vikings, who had reached the shores of Canada in the 11th century as part of the Norse colonization of North America. In Viking sources, these peoples are called the '' Skrælingjar''. Some Thule migrated southward, in the "Second Expansion" or "Second Phase". By the 13th or 14th century, the Thule had occupied an area inhabited until then by the D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pre-Dorset
The Pre-Dorset is a loosely defined term for a Paleo-Eskimo culture or group of cultures that existed in the Eastern Canadian Arctic from c. 3200 to 850 cal BC, and preceded the Dorset culture. Due to its vast geographical expanse and to history of research, the Pre-Dorset is difficult to define. The term was coined by Collins (1956, 1957) who recognised that there seemed to be people that lived in the Eastern Canadian Arctic prior to the Dorset, but for whose culture it was difficult to give the defining characteristics. Hence, for Collins and others afterward, the term is a catch-all phrase for all occupations of the Eastern Canadian Arctic that predated the Dorset. To Taylor (1968) and Maxwell (1973), however, the Pre-Dorset were a distinct cultural entity, ancestral to the Dorset, and that lived in the Low Arctic of Canada with a number of incursions into High Arctic. At the site of Port Refuge on the Grinnell Peninsula, Devon Island, McGhee distinguished two sets of occup ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saqqaq Culture
The Saqqaq culture was a Paleo-Eskimo culture in southern Greenland. It was named after the settlement of Saqqaq, the site of many archaeological finds. The Saqqaq were the longest-residing residents of Greenland in all of history. Timeframe The earliest known archaeological culture in southern Greenland, the Saqqaq existed from around 2500 BCE until about 800 BCE.Saqqaq culture profile — from the Greenland Research Centre at the National Museum of Denmark. This culture coexisted with the Independence I culture of nort ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
