Ecology Lesson 7: Major Terrestrial Ecosystems page 1 of 2 A) Introduction ✓ ________________ is the most important factor in determining the location and make up of an ecosystem ✓ A biome is a large geographical region defined by climate (__________________ and ___________________) with a specific set of biotic and abiotic features B) Canada’s Biomes 1) Tundra ✓ Most __________________ biome ✓ Cold ____________, ____________ growing season, cold temperature ✓ __________________ ✓ Permanently __________________ ground ✓ Surface soil thaws, forms active growing layer for ____________ ✓ Low soil temperature, means slow __________________ and __________________ cycling ✓ Species ✓ Barren ground __________________ ✓ Travel in large herds, feed on low growing ____________ and ___________ ✓ Migrate long distances to obtain enough food for body ____________ By Paul Gierszewski - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/i ndex.php?curid=30927252 2) Boreal Forest ✓ __________________ Canadian biome ✓ __________________ and ____________ summer support tree growth ✓ __________________ soil from decomposing conifer needles ✓ Slows __________________ and limits the variety of _____________ ✓ Dominant tree is __________________ ✓ Needle leaves reduce ____________ loss, which helps the tree survive the long winter ✓ Shape, size and _____________ branches support load of snow ✓ Floor has ____________ tolerant __________________ and ____________ By Judicieux - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/i ndex.php?curid=71314574 3) Temperate Deciduous Forest ✓ Deciduous trees, including ____________, ______ and ______ ✓ ____________r growing season ✓ Temperatures don’t get as low as coniferous, faster __________________ rates ✓ Forest layers: ____________, __________________, ____________, _____-_____________ __________________ ✓ Plant variety supports ____________ variety ✓ Each species is adapted to a portion of the forest ✓ Much forest has been replaced by __________________, ____________ and ____________ By Rick Harris from Toronto, Ontario, Canada - Something This Way Comes, CC BY-SA 2.0, https://commons.wikimedia.org/w/i ndex.php?curid=54227900