Parts of the Ecosystem

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Parts of the Ecosystem
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What is Ecology?

• Study of the interactions between organisms and
• their environment

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ECOSYSTEMS

• An ECOSYSTEM is made of all the living
  nonliving things that interact in a particular
  area
• Ecosystems can be
• large or small

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ECOSYSTEMS

• The living parts of an ecosystem are called
  BIOTIC factors
• Examples trees, plants, flowers,
• insects, animals

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ECOSYSTEMS

• The non-living things in an
• ecosystem are called ABIOTIC
• factors
• Examples water, rocks, soil, air,
  temperature, wind, carbon
• dioxide, nutrients, sunlight

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Organization in the Environment

• Ecologists have arranged the environment in
  different levels
• Organism
• Population
• Community
• Ecosystem
• Biosphere

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The 5 Levels 1 Organism

• 1. An individual is a single organism.

Ex an alligator, a human, an oak tree
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The 5 Levels 2 Population
A population is a group of individuals of the
same species in the same area. Ex group of
alligators, herd of deer
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The 5 Levels 3 Community
A community consists of all of the populations of
different species that live and interact in an
area.
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The 5 Levels 4 Ecosystem
An ecosystem is made up of a community of
organisms and its abiotic environment
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The 5 Levels Level 5 Biosphere
The biosphere is the part of Earth where life
exists
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Salt Marsh Ecosystem

• Organism- egret, Seaside sparrow, Periwinkle
  snail, oyster, Laughing gull
• Population- Laughing gull, Codgrass
• Community- Sparrows eat the crabs, algae grows on
  grass, snail uses grass as shelter and protection
• Ecosystem- how does temp., precipitation, soil
  affect the organisms?, river brings in nitrogen
  which helps the algae grow
• Biosphere- where all life lives

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Biotic and Abiotic Factors

• Biotic Laughing gulls, seaside sparrow,
  codgrass, snail, algae, jellyfish (any of the
  animals or plants)
• Abiotic sunlight, river (water), temperature,
  soil, rain (weather), nutrients from the nitrogen