Biology Presentation

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Slide 1: 

Boreal Coniferous Forest (Tiaga)

Slide 2: 

Abiotic Factors

Slide 3: 

Precipitation 40 to 100 cm (15.7 to 39.4 inches)

Slide 4: 

Average Temperature The winter months average 32F (0C) and the summer months average 72F (22C).

Slide 5: 

Soil Trees are acidic which makes the water runoff acidic which makes the soil acidic.

Slide 6: 

Abiotic factors: Mild temperatures Abundant precipitation during fall, winter, spring Relatively cool, dry summer Rocky, acidic soils

Slide 7: 

Spring

Slide 8: 

Summer

Slide 9: 

Autumn

Slide 10: 

Winter

Slide 11: 

Biotic Factors

Slide 12: 

Coniferous trees (or conifers) Dominate the Boreal Coniferous Forest The majority are evergreen (keep their needles in the winter Conifers do drop some needles (a few at a time, all year round) Conifers grow new needles every spring

Slide 13: 

Dominant Trees

Slide 14: 

Dominant Trees Sitka Spruce Sitka Spruce Douglas Fir

Slide 15: 

Dominant Trees Western Hemlock Redwood

Slide 16: 

Dominant Trees Eastern Hemlock

Slide 17: 

Dominant Trees Tamarack

Slide 18: 

Dominant Trees

Slide 19: 

Jack Pine is the dominant tree in burn areas. The cone releases seeds after a fire. The seeds will germinate and colonize.

Slide 20: 

Some Deciduous trees that flourish in burn areas. Poplars White Birch Alders

Slide 21: 

Ways that Conifers have adapted: Cope with poor soil, low temperatures and limited precipitation Low humidity (not much moisture from the air) Tolerate long, dormant periods when water is unavailable Needles reduce water lost to evaporation Shaped for harsh winters Needles do not allow snow to accumulate on branches Branches are flexible to allow bending

Slide 22: 

Other Plants Sphagnum Moss Wintergreen Ferns Bunchberry Blueberry

Slide 23: 

Animals that are dormant in the winter: Black Bear Deer Fly Mosquito Black Fly

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Animals that are adapted to harsh winters: Snowshoe Hare Lynx

Slide 25: 

Animals that live in protected areas: Red Squirrel Shrew Marmot

Slide 26: 

Animals that migrate south for the winter: Chickadee Woodpecker

Slide 27: 

Birds of Prey Owl Eagle Hawk Falcon Osprey

Slide 28: 

Adaptations to capture prey: Claws Mouth parts adapted to grab, hold, bite Size and strength Concealing coloration Acute senses Behavioral strategies: stealth, cunning, confusion, surprise

Slide 29: 

Adaptations for avoiding capture: Speed Hiding Freezing in position Withdrawal into shell or burrow Counterattack (hooves, horns, biting, stinging, concealing color, acute senses Behavioral strategies (large herds)

Slide 30: 

The End

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