Download Levels of Organization

What is Ecology?
Ecology is the scientific
study among and
between organisms and
their physical
environment
Levels of Organization
There are 6 levels of organization in Ecology
From largest to smallest….
• Biosphere: everywhere on earth life exists
• Biome: group of ecosystems that share similar climates
and organisms
• Ecosystem: A place where all organisms live together
with their physical environment
• Community: Different populations living in the same area
• Population: A group of individuals of the same species
that live in the same place
• Individual organism: a species is a group of similar
organisms that can breed an produce fertile offspring
Biotic vs. Abiotic
The Biological influences on an organism are called
BIOTIC factors. It is any living part of the environment in
which an organism might react
Physical Components of an ecosystem are called
ABIOTIC factors. Any non-living part of the environment.
Forested Stream
Biotic
Trees
Fish
Birds
Insect larvae
Decaying organisms
Logs
Eggs
Abiotic
Rocks and
boulders
Topography
Water quality
Salt/mineral
content
Oxygen level
Water/rain
Pollution
Erosion