The study of theexchanges of materials,energy or organismsamong ecosystems
Boreal or Taiga
dominated by black spruce; cold climate;moist soils)
(small plants & no trees, poorly developedsoils
hot, low soil moisture, sandy soils
Tropical Rain Forest
wet, warm; very biologically diverse
is defined as the average weatherpattern over a long period of time at a particularlocation, normally in terms of temperature andprecipitation.Toronto’s climate: cold winters, warm summers,approx.
900 mm of precipitation per year.
is defined as the meteorologicalconditions at a point in time (weather forecast fortoday is cloudy, warm, windy, with 30% chanceof precipitation, etc)
What affects distribution ofclimate around the earth?
Spherical shape of the earth and tilt of earth’saxis cause uneven heating of earth’s surface.Uneven heating drives major global aircirculation patterns and consequentlyprecipitation and biome distribution patterns.
Tropical Hadley Cell in northern hemisphere
Circulation pattern in cell caused by:• Warm, moist air rises.• Moisture cools, condenses, and falls asrain.• Some of the dry ascending air travelsnorthward. Then cooler, dry air falls back to surface.Once air has been set in motion, it undergoes anapparent deflection from its path, as seen by anobserver on the earth. This apparent deflectionis called the “Coriolis force” and is a result of the earth’s rotation or daily spin.
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