Habitat Notes

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Habitat Notes
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Species

• Interbreed and produce fertile offspring

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Hybrid

• Interbreed but do not produce fertile offspring

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Population

• Group of organism in an area

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Biological Community

• Groups of different interacting organisms (plants
  and animals) in an area.

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Ecosystem

• Ecologic System
• A community of organism
• Energy and nutrient processing system
• Has inputs and outputs
• Dynamic

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Habitat

• Where an organism lives

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Ecological Niche

• Your functional role (your job) in the ecosystem
• How you fit in, what you eat, what eats you, your
  tolerances
• Relationships with the environment

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Generalist Species

• eats anything, can live anywhere
• Rats, Weeds

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Specialist Species

• picky eater, fragile
• Koala

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Competitive Exclusion Principle

• If two or more species coexist using a limited
  resources, one will be displaced.
• Rats mice
• Grass weeds
• Humans just about everything else

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Biotic Components

• Living factors
• surrounding plants and animals
• decomposers

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Abiotic Components

• Nonliving Factors
• temp, salinity, sunlight, pH, wind, soil,
  moisture, gases, time

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Biomes

• Major regional ecological community
• It is characterized by a distinct climate and
  therefore a particular set of plants and animals
  that have adapted to it.
• Tundra, Taiga, Temperate Deciduous Forest,
  Grassland and Desert
• Tropical Rain Forest

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Aquatic Life Zones

• Aquatic equal of biome
• Marine
• Coral reefs, estuaries, deep ocean cont shelf
• Freshwater
• Lakes, rivers, ponds, marshes

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Biosphere

• Earth Biome or Earth Biological System or Global
  Biome
• Skin of life on the Earth
• bottom of ocean to top of highest mountains
• Intersection of the atmosphere, hydrosphere and
  lithosphere
• Closed (materials) System
• Nutrients, O2, CO2,

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Tolerances

• Temperature
• Sunlight
• Acidity of soil
• Air Pressure
• Pollution

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Range of Tolerances

• Optimum Range
• Range of conditions that an organism is well
  adapted
• Stress Zone
• Conditions for survival and reproduction are
  possible but not optional
• Intolerance Zone
• Conditions for survival are not possible

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Tolerances

• Different species have widely different ranges of
  tolerances.
• Cockroach, rat

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Tolerances
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Limiting Factors

• The factor that is in short supply and therefore
  limits the population size.
• Sunlight in lake, water in desert, food,
• Nutrients, Oxygen

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