PowerPoint_Ecosystem Organization and Limiting Factors
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Transcript PowerPoint_Ecosystem Organization and Limiting Factors
Inquiry Activity
Put an L next to all of the things you think are
living and an N next to the things you think are
nonliving:
___ Plant
___ Sunlight
___ Wind
___ Frog
___ Mold
___ Oxygen
___ Human
___ Flower
___Yeast
___ Bird
___ Temperature
___ Humidity
___ Water
___ Minerals
___ Rock
___ Rain
___ Bacteria
___ Fire
What is Ecology?
Ecology- studies interactions
between organisms and their
environments.
It is a science of relationships.
What do you mean by environment?
The environment is made up of two factors:
Biotic factors- all living organisms inhabiting the
Earth
Abiotic factors- nonliving parts of the
environment (i.e. temperature, soil, light,
moisture, air currents)
Levels of Organization in Ecology
A range of all surroundings in an
environment.
Listed from smallest to largest.
Biosphere
Ecosystem
Community
Population
Organism
Level or Organization Notes
You will be moving around to the descriptions of
each level of the walls around the classroom
You will have 8 minutes to get all 5 levels of
organization and an example for each one (SO
MOVE QUICKLY)!
Once you are done head back to your assigned seat
Organism- any unicellular or
multicellular living thing.
•The smallest level of organization
•Example: 1 Fish or 1 Bear
Population-a group of one species
of organisms living in the same
place and breeding.
Example: Group of Bears or a
School of Fish.
Community- several different
populations that live in a common
environment.
Example:
Bears AND Fish
Living in the SAME
PLACE
Ecosystem- Made up of
communities and abiotic
factors.
Biosphere- ALL life supporting
portions of Earth composed of air,
land, fresh water, and salt water.
•The largest level of organization
What is a Limiting Factor?
Limits the SIZE of a population and prevents it from
growing FAST
Examples include: stress (overcrowding), starvation,
disease, parasites and predation, poor reproductive
success, and damage to the habitat.
Limiting Factors can be both BIOTIC and ABIOTIC
Carrying Capacity
Carrying capacity is the maximum population that
the environment can support
Limiting factors effect carrying capacity
The amount of food, habitat (living space), water etc.