Ecological Organization Biogeography and Biodiversity

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Ecological OrganizationBiogeography and
Biodiversity
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Environmental levels of organization
Large area containing similar ecosystems
Biome
Ecosystem
Community and abiotic factors of an area
Community
Group of different populations
Population
Group of ind. Of the same species
Organism
Individual
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Studying Populations

• Size
• Direct Observation
• Indirect Observation
• Sampling
• Mark and recapture
• Changes in Population size
• Birth rate - Death Rate
• If Birth rategt Death Rate Population
• If Birth rate lt Death Rate Population

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Studying Populations

• Migration Movement of Individuals in or out of
  Populations
• Immigration
• Emigration
• Changes are graphed.
• Limiting Factors Factors that cause populations
  to decrease.
• Population Density Individuals
• Unit Area

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Biogeography

• Studies where organisms live and why they are
  distributed this way.
• Distribution affected by
• Continenteal Drift
• Dispersal (Wind, Water, Living things)
• Limit dispersal Physical Barriers, Competition,
  climate

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BIODIVERSITY

• Variety of living things
• Differences due to adaptations
• Reasons for adaptations
• Protection from environment and enemies
• Obtaining food and water
• Locomotion
• Reproduction
• Guarantees survival

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SOME MECHANISMS OF ADAPTATION

• Camouflage
• Mimicry
• Attracting colors
• Seed dispersal mechanisms (floating, carried by
  wind, fruit, sticky substances, popping fruits)
• Different body structures
• Shapes of leaves

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DIVERSITY
Organism
Geographical
SURVIVAL
BIODIVERSITY
GEOLOGICAL
ADAPTATION
Ethnical
SPECIES
ECOSYSTEMS
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DIVERSITY OF ECOSYSTEMS

• Includes all organisms adapted to the particular
  abiotic conditions and to the other populations
  in the community
• Variety depends on geographical position
• Influenced by abiotic conditions

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BiomesEcosystems with similar abiotic conditions
and communities
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DIVERSITY IN TROPICAL SOUTH AMERICA VS. TEMPERATE
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