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4.02 The Biosphere - Arctic Tundra
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4.02 The Biosphere - Arctic Tundra
Research websites: http://www.windows2universe.org/earth/polar/arctic_marine_life.html
http://apassionforscience.pbworks.com/w/page/37237512/1E1_2011%20Group%209%20-%20Arctic%20Tundra
http://www.livescience.com/28406-arctic-tundra-turning-green.html
http://www.cotf.edu/ete/modules/msese/earthsysflr/tundra.html
Location
The arctic tundra's are located in northern Alaska, Canada, and Siberia.
Geography in the Arctic Tundra
Predictions on the climate change to the Arctic Tundra
They get less than ten inches of rain per year and have dry winds. It's a desert-like climate, but in the Arctic. There is also a lot of permafrost on the ground like in this picture.
One prediction was that they expect the arctic tundra to get alot warmer by 2050. They expect at that time trees will be growing, meaning that they will be able to develop and deeper root system and the weather will accommodate that. They also said there's a possibility of extreme weather conditions like Hurricane Sandy, the tsunami/earthquake in Japan,and etc., could become normal.
Effects of sunlight/temperature and aquatic life in the Arctic Tundra
Most plants in the area are low growing, have shallow root systems and are capable of carrying out photosynthesis in low light and with low temperatures. The aquatic life in the tundra is algae, zoo plankton, amphipods, and etc. They survive in the extreme temperature and water conditions.
Depths/Salinity and the seasonal changes in the Arctic Tundra
The winter temperature is around -28 degrees Celsius and can get to -50 degrees or lower. Permafrost freezes the water most of the time, atleast until the summer. The salinity level is very low and you can identify the levels by looking at the permafrost.