1. Section 1 Community Ecology
Chapter 3
Section 1
Community Ecology

2. Main Idea
All living organisms are limited by factors in their environment.
We are limited by temperature
We need certain clothing types
We need certain types of housing (shelter)
What about food???
What types of food do we eat that is NOT assessable in other states or other countries.
Try to image our resources without importing/exporting

3. Main Ideas
Constantly changing communities of plants and animals drive a process called succession.
Limiting factors and Ranges of Tolerance are factors that determine where terrestrial biomes and aquatic ecosystems exist.

4. Community
Lets Review – A community is a group of interacting populations that occupy the same area at the same time.
What are populations?
One single species of organisms that share the same geographic location at the same time.

5. Limiting Factors
Even humans are limited like all other organisms by factors in our environment.
Anything that restricts the number of organisms, reproduction and distribution of organisms is considered a limiting factor.
Limiting Factors can be both:
Abiotic
Biotic

6. Abiotic Factors How do the non-living factors impact organisms?
Sunlight
Climate
Temperature
Water
Nutrients
Fire
Soil Chemistry
Space

7. Biotic Factors How do living things impact organisms?
Disease in populations
Predation from organisms
Native or Invasive species

8. Range of Tolerance
Range of Tolerance - Is affected by both abiotic and biotic factors.
Tolerance means – the ability to survive in conditions that are not perfect.
Temperature we have a range we can survive in
60 – 100 degrees Fahrenheit
Upper Limit - 100
Lower Limit - 60

9. Range of Tolerance