Ecology

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Ecology

• Study of interactions between organisms and their
  environments

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Biotic Factors

• Biotic factors all living organisms in a
• biosphere
• Biology - study of living things
• Biosphere life-supporting layer of Earth

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Abiotic Factors

• Nonliving factors in an environment
• Examples
• Water
• Sunlight
• Oxygen
• Temperature
• Soil

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Ecological Organization
Biosphere
Ecosystems
Communities
Populations
Organisms
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3 Types of Interactions

• Competition struggle for limited resources
• Predation predator/prey
• Symbiosis living together

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Competition
Niche ecological role
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Feeding Relationships

• Autotrophs self feeder, producer
• Heterotrophs other feeder, consumer
• Carnivores
• Omnivores
• Herbivores
• Scavengers/Detritivores
• Decomposers

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Food Chains, Food Webs, Energy Pyramids

• Food chain a series of events in which one
  organism eats another and obtains energy
• Food web the pattern of overlapping food chains
  in an ecosytem
• Energy pyramid a diagram that shows the amount
  of energy that moves from one feeding level to
  another in a food web

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Symbiosis living together
Relationship Type Species A Species B
Mutualism
Commensalism 0
Parasitism -
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