Food Webs Within Ecosystems

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Food Webs Within Ecosystems

• Marine, Freshwater, and Terrestrial
• FOOD WEBS

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Ecosystems

• A community of organisms interacting with one
  another and their environment
• Includes all Biotic and Abiotic factors
• Biotic Factors All living things
• Plants and animals
• Abiotic Factors All nonliving things
• Water and land

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Marine Ecosystems

• Oceans

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Freshwater Ecosystems

• Lakes, ponds, rivers, streams

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Terrestrial Ecosystems

• Forests, Deserts, Grasslands, Mountains

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Habitat

• Place where an organism lives

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Population

• Group of individuals of the same species that
  live in a certain area

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Community

• All the populations that live and interact with
  each other in an area

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Niche

• The role of an organism within its community
• Coral, plankton, fish

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Food Chain

• Shows how the energy in food is passed from
  organism to organism in an ecosystem

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Food Web

• Combination of all overlapping food chains
• in an ecosystem.

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Producers

• Plants - Organisms that make their own
• food through photosynthesis

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Consumers

• Animals - Organisms that eat other organisms
• to obtain food for energy

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3 Types of Consumers

• Herbivores Animals that only eat plants
• Omnivores Animals that eat plants and other
  animals
• Carnivores Animals that only eat other animals
  (meat)

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Predator/Prey Relationships

• Predator Organism that eats another organism
• Prey Organism in which the predator eats

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Parasite/Host Relationships

• Parasite organism that feeds off other living
  creatures
• Fleas, Ticks, Worms, Lice, etc.
• Host organism that is being feed on by a
  parasite

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Decomposers

• Organisms that get their energy by breaking down
  dead organisms

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