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Interactions of Living ThingsMay 2012
Living or Not Living?
• Biotic – any living thing in an ecosystem– Examples: (list our
class examples)
• Abiotic – any nonliving parts of the environment– Examples: (list our
class examples)
• Weigand took Vance and Reed to school on the court!!!
Organization in the Environment
• Organism - one member of a species
Organization in the Environment
• Population - a group composed of the same species
Organization in the Environment
• Community - all the populations in an area; includes plants
Organization in the Environment
• Ecosystem - community of organisms plus their abiotic environment
Organization in the Environment
Biosphere - where life exists on Earth
One yellow reef fish = organism
all yellow reef fish = population
all fish types, sea anemone, tube worms, coral, sea weed
= community
all fish types, sea anemone, tube worms, coral, sea weed
= community
the coral reef, water, sunken ship,….
= ecosystem
Whole Earth = Biosphere
Organization in the Environment
Example:
• Organism - yellow reef fish
• Population - all yellow reef fish
• Community - all fish types, sea anemone, tube worms, coral, sea weed
• Ecosystem - the coral reef, water, sunken ship,….
• Biosphere - Earth
Living things use energy!
Living things are divided groups by how they get their energy.– Producers: gets energy from sunlight– Consumers: gets energy from other things
• Herbivore: eats only plants• Carnivore: eats only animals• Omnivore: eats plants and animals
– Decomposers: get energy from dead things
Living things use energy!
• Food Chain - shows energy flow from one organism to another
Living things use energy!• Food Webs – interconnecting food
chains in an ecosystem
Living things use energy!
• Energy Pyramid – a triangular diagram that shows the loss of energy as it moves between organisms
In an energy pyramid, a producer is ALWAYS on the bottom, with a predator on top.
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