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Northwestern Coniferous Forest Biome Project
Transcript of Northwestern Coniferous Forest Biome Project
Description of Northwestern
Biotic and Abiotic Factors
Trees like redwood, fir, and spruce
Birds like woodpeckers and hawks
Animals like black bears, weasels, lynxes, foxes, deer, hares, and flying squirrels
Relatively cool, dry summers
Rocky, nutrient-poor, and acidic soil
20 inches of precipitation per year
Threats to Biodiversity
exploration and development of oil and natural gas reserves
release of carbon dioxide and methane (both greenhouse
acid rain caused by the chemicals that humans release into the air
logging, mining, piping, hunting, polluntants, and urbinization (all caused by humans)
Snowshoe rabbits and Canada lynx are in a predator-prey relationship
The snowshoe rabbit population increases when the Canada lynx population is small
The snowshoe rabbit population decreases when the Canada lynx population is large
Sudden drops in snowshoe rabbit population are due to hunting
About the Northwestern Coniferous Forest
Temperature ranges from 5°C to 15°C
Abundant precipitation during fall, winter, and spring
Summers are relatively cool and dry
Growing period is about 130 days
Soil is rocky, nutrient-poor, and acidic
Has lakes and bogs (lakes filled with mineral and organic matter)
Population Fluctuation Over Time
Carbon and Nutrient Cycling
Old-growth forests of the Pacific Northwest store more carbon per unit area than any other biome
Regional temperate climate creates ideal soil conditions and properties which allow trees to grow bigger
Carbon, nitrogen, calcium, and other key nutrients are transferred from plant to soil to air and back to plant again.
logging companies and enivironmental groups agree to protect over 300,000 square kilometers of Canadian boreal forest
385,000 square kilometers under strict protection guidelines
the Canadian Boreal Forest Agreement (CBFA) has members of the Forests Products Association of Canada (FPAC) and other environmental groups working together to make necessary changes such as establishing new protected areas, protect habitats of species at risk, regulate the climate
Beldin, S.I., and Perakis, S.S., 2009, Unearthing the secrets of the forest: U.S. Geological Survey Fact Sheet 2009-3078, 4 p.
"Habitat Awareness Coniferous Forest." Habitat Awareness Coniferous Forest. Make Mine Magic Inc., 2009. Web. 29 Apr. 2014.
"Implementing the Canadian Boreal Forest Agreement." CPAWS. Canadian Parks and Wilderness Society, n.d. Web. 29 Apr. 2014.
Miller, Kenneth R., and Joseph S. Levine. Prentice Hall Biology. Upper Saddle River, NJ: Prentice Hall, 2004. Print.
"Northern Coniferous Forest Biome." Forestry Outreach Site. Virginia Tech, 2 June 2005. Web. 25 Apr. 2014.
"Pact Protects Canadian Forests." Nature. Nature Publishing Group, 18 May 2010. Web. 29 Apr. 2014.
"Report: The Carbon the World Forgot." Report: The Carbon the World Forgot. Boreal Songbird Initiative, n.d. Web. 30 Apr. 2014.
Rogers, Kara. "The Rise and Fall of the Canada Lynx and Snowshoe Hare." Britannica. Encyclopædia Britannica, Inc., 25 Apr. 2014. Web. 22 June 2011.
"The Forest Biome." The World's Biomes. UCMP, Apr. 2004. Web. 25 Apr. 2014.
"The Taiga or Boreal Forest." Biomes of the World. Marietta College, 14 Oct. 2013. Web. 25 Apr. 2014.
Boreal forests store more carbon than any other terrestrial ecosystem on earth
-twice as much per area as tropical forests.
Much of the world's terrestrial carbon is stored in boreal forest soil
-one of the world’s largest and most important terrestrial carbon storehouse
-when logged or when soil disturbed, carbon and methane greenhouse gasses are released, accelerating global warming.
Boreal Forests and its peatlands have a cooling effect on the climate due to their ability to remove atmospheric CO2 (carbon dioxide) and store it underground in the soil for thousands of years.
However, when boreal forests are logged or soils are disturbed, carbon and methane greenhouse gasses are released, accelerating global warming.
Keeping the boreal carbon reservoir in place is essential to avoid accelerating climate change.
Cold temperature reduces decomposition rates which allows productive carbon storing
Canada's boreal forest stores an estimated 208 billion tons of carbon.
-Roughly 56% of all this carbon stored in peat. (Peat is an accumulation of partially decayed vegetation or organic matter.)
1000 kilocalories. 100%.
100 kilocalories. 10%.
10 kilocalories. 1%.
1 kilocalorie. 0.1%.
Boreal conifers have adapted strategies to cope with the reduced availability of Nitrogen.
Increases photosynthesis and leaf area and thus increases growth and wood formation
Nitrogen disturbances (i.e. wild fires and wood harvesting) can alter the Nitrogen cycle in soil and consequently affect forest growth
(i.e. Boreal Forest, Tundra) Nitrogen limited due to slow mineralization rate of the soil