Search results
Results from the WOW.Com Content Network
Polar ecology is the relationship between plants and animals in a polar environment. Polar environments are in the Arctic and Antarctic regions. Arctic regions are in the Northern Hemisphere , and it contains land and the islands that surrounds it.
Arctic vegetation is largely controlled by the mean temperature in July, the warmest month. Arctic vegetation occurs in the tundra climate, where trees cannot grow.Tundra climate has two boundaries: the snow line, where permanent year-round snow and ice are on the ground, and the tree line, where the climate becomes warm enough for trees to grow. [7]
The ice within permafrost is divided into four categories: pore ice, vein ice (also known as ice wedges), buried surface ice and intrasedimental ice (from the freezing of underground waters). [58] One example of ice formation in permafrost areas is aufeis - layered ice that forms in Arctic and subarctic stream valleys. Ice, frozen in the stream ...
In an ice cap climate, no plants can grow, and ice gradually accumulates until it flows or slides elsewhere. Many high altitude locations on Earth have a climate where no month has an average temperature of 10 °C (50 °F) or higher, but as this is due to elevation, this climate is referred to as Alpine climate .
The melting of sea ice further disrupts the lives and ecological interactions of a wide range of species, including polar bears, Arctic foxes, and multiple species of seals and sea birds. This disruption can be caused by many factors, including but not limited to these species' use of sea ice for various behaviors including migration, hunting ...
Arctic vegetation has distinct postglacial development characteristics compared to the more temperate zones of lower latitudes. A study of postglacial moraines conducted in the Canadian Arctic on Ellesmere Island have found that dwarf shrubs of Dryas integrifolia and Cassiope tetragona are often good indicators of vegetation development and progression.
An ice cap climate is a polar climate where no mean monthly temperature exceeds 0 °C (32 °F). The climate generally covers areas at high altitudes and polar regions (60–90° north and south latitude), such as Antarctica and some of the northernmost islands of Canada and Russia .
Plants in temperate and polar regions adapt to winter and sub zero temperatures by relocating nutrients from leaves and shoots to storage organs. [1] Freezing temperatures induce dehydrative stress on plants, as water absorption in the root and water transport in the plant decreases. [ 2 ]