Communities

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Communities Biomes

• Ch3 Guide

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Biotic Abiotic Factors

• Biotic
• 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 Factor

• Limits Growth
• Biotic or
• Abiotic
• Too much or
• Too little

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Ranges of Tolerance

• 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
3. Climax community
2. Intermediate species

• Pioneer
• species

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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 Succession

• Secondary
• After a blowout
• Re-establish a community
• Already had living organisms
• Fire, flood, human disruption

• Primary
• 1st time plants
• or animals are
• established
• New island
• Volcanoes
• Bare soil, rock

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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
3. Climax community
2. Intermediate species

• Pioneer
• species

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• Biome
• biotic community
• dominant plants and animals
• unique climate

Biomes of the World
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BIOMES

• Tundra
• Coniferous Forest
• Deciduous Forest
• Desert
• Grassland
• Rainforest
• See Biome PP for examples