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Habitat selection, reproduction and predation of wintering lemmings in the Arctic. Oecologica. 167(4): 967–980. Gauthier G, Berteaux D, Bety J, Tarroux A, Therrien J, McKinnon L, Legagneux P, Cadieux M. (2011). The tundra food web of Bylot Island in a changing climate and the role of exchanges between ecosystems1. Ecoscience. 18(3):223.
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). [1] This region is characterized by two biomes: taiga (or boreal forest ) and tundra . [ 2 ]
For example, human food webs, agricultural food webs, detrital food webs, marine food webs, aquatic food webs, soil food webs, Arctic (or polar) food webs, terrestrial food webs, and microbial food webs. These characterizations stem from the ecosystem concept, which assumes that the phenomena under investigation (interactions and feedback loops ...
With wildfires and increased warming, scientists say the Arctic’s tundra is now a carbon source. The region had been a carbon sink for thousands of years (NOAA Climate.gov; Arctic Report)
In physical geography, tundra (/ ˈ t ʌ n d r ə, ˈ t ʊ n-/) is a type of biome where tree growth is hindered by frigid temperatures and short growing seasons. There are three regions and associated types of tundra: Arctic tundra, [2] alpine tundra, [2] and Antarctic tundra. [3] Tundra vegetation is composed of dwarf shrubs, sedges, grasses ...
A focus of the latest Arctic evaluation was the effects of warmer weather and wildfires on the tundra, a far-northern biome that's typically known for extreme cold, little precipitation and a ...
Arctic cod are a keystone species in Arctic marine food webs. [10] Because Arctic cod have high lipid concentrations relative to their size, predators in the Arctic rely on this species as their main food source. [10] Arctic cod funnel more than 70% of the energy from zooplankton to higher trophic levels [11] and are the most energy-rich prey ...
The Arctic is rapidly changing from the climate crisis, with no "new normal," scientists warn.. Wildfires and permafrost thaw are making the tundra emit more carbon than it absorbs. From beaver ...