Community Interactions

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Community Interactions

• BioH Chapter 40

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Basic Ecology Terminology

• Habitat
• Community
• Niche
• Community
• Interactions

• The physical, chemical and biotic features of
  where an organism is typically found
• All species within a habitat that interact with
  each other influenced by
• Abiotic conditions
• Resource availability
• Adaptive traits of organisms
• Species to species interaction
• Population size
• The sum of all activities relationships an
  organism engages in as it interact in the
  community.(The role that an organism plays)
• Relationships between communities within habitat
• Symbiotic - living together
• Harmful relationships

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Community Interactions
Complete the Community Interactions Video
Questionnaire!
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Community Interactions
Description Organism A Organism B Example
Predation
Mutualism
Commensalism
Parasitism
Most relationships are NEUTRAL (no effect on
either species)
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Community Interaction Mechanisms

• Defense Mechanisms
• Camouflage
• Warning coloration
• Mimicry
• Moment-of-truth defenses

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Ecological Succession
Primary succession succession where no soil
exists Pioneer species the first living
organisms to populate an area Secondary
succession succession to existing ecosystem
after natural disaster
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Mt. St. Helens
Before eruption May 17, 1980
After eruption May 18, 1980
Today
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Other succession examples
Tuolumne Meadows - Yosemite
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Climax Communities
Land Biomes
Complete the Climax Communities Video Worksheet
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Climate Diagrams
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World-wide land biome climate maps
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Other Biomes

• Mountain ranges
• Polar ice caps

(Greenland)
Aquatic Biomes

• Freshwater Ecosystems
• Flowing water
• Standing water
• Freshwater wetland
• Estuary

• Marine ecosystems
• Photic
• Aphotic
• Intertidal
• Coastal
• Open ocean

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Primary Productivity
A measure of energy produced per area
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