Communities & Biomes Biotic & Abiotic Factors Biotic = Living organisms Abiotic = Nonliving...

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Communities & Biomes

Transcript of Communities & Biomes Biotic & Abiotic Factors Biotic = Living organisms Abiotic = Nonliving...

Page 1: Communities & Biomes Biotic & Abiotic Factors Biotic = Living organisms Abiotic = Nonliving Soil,Air,Water Substrate.

Communities & Biomes

Page 2: Communities & Biomes Biotic & Abiotic Factors Biotic = Living organisms Abiotic = Nonliving Soil,Air,Water Substrate.

Biotic & Abiotic FactorsBiotic = Living organisms

Abiotic = Nonliving Soil,Air,Water Substrate

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1.Community: Biotic factors

All the Plants & Animals

In a given area? Community

of Del Mar

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Forest Community …………..

•Deciduous trees•Deer•Fox•Skunks•Insects•Shrubs•Grasses

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Ecosystem: Both biotic and abiotic factors in a large area:

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2. Limiting FactorLimits GrowthBiotic or AbioticToo much orToo little

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Ranges of Tolerance

0

20

40

60

80

100

10 15 20 25 30snail

Range over which a population or organism can successfully survive & grow

Too much or too little of an environmental factor can be limiting

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3. Succession Orderly

change Over time Natural Species

Replacement In a

community or ecosystem

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Succession communities:

1. Pioneer species

2. Intermediate species

3. Climax community

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Pioneer species:

Lichens (algae & fungi) break apart rock to make soil

Grasses Annual flowers Mosses

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Climax Community: final set of organisms suited to that climate

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Deciduous Climax Forest

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San Diego Coastal Sage & Chaparral Climax Community

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Types of SuccessionPrimary 1st time plants

or animals are

established New island Volcanoes Bare soil, rock

Secondary After a “blowout” Re-establish a

community Already had

living organisms Fire, flood,

human disruption

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New island= Primary Succession

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Secondary Succession will follow!

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Primary Or Secondary?

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BOTH PRIMARY & SECONDARY have

these Succession communities:

1. Pioneer species

2. Intermediate species

3. Climax community

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Biome biotic

community

dominant plants and animals

unique climateBiomes of the World

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BIOMESTundraConiferous ForestDeciduous ForestDesertGrasslandRainforestSee Biome PP for examples