1. Parts of the Ecosystem

2. ECOSYSTEMS
An ECOSYSTEM must provide what an organism needs to survive, or the organism must move, adapt, or die.
To stay alive, organisms need
4 things:
Energy (food)
Water
Oxygen
Living space

3. An Organism and Its Environment
Habitat: Place where organism lives which is determined by climate and adaptations.

4. LIVING THINGS AND THEIR ENVIRONMENT
Environment– all the living and nonliving things with which an organism interacts.
All the living and nonliving things in an environment are interconnected. If one factor is affected another factor is thrown off balance. Nature is always trying to stay in balance.

5. What is Ecology? Study of the interactions between organisms and
their environment

6. ECOSYSTEMS The living parts of an ecosystem are called BIOTIC factors
Examples: trees, plants, flowers,
insects, animals

7. ECOSYSTEMS The non-living things in an ecosystem are called ABIOTIC
factors
Examples : water, rocks, soil, air, temperature, wind, carbon
dioxide, nutrients, sunlight

9. Organization in the Environment
Ecologists have arranged the environment in different levels
Organism
Population
Community
Ecosystem
Biosphere

10. The 5 Levels: #1 Organism 1. An individual is a single organism.
Ex: an alligator, a human, an oak tree

11. The 5 Levels: #2 Population
A population is a group of individuals of the same
species in the same area.
Ex: group of alligators, herd of deer

12. The 5 Levels: #3 Community
A community consists of all of the populations of different species that live and interact in an area.

13. The 5 Levels: #4 Ecosystem
An ecosystem is made up of a community of organisms and its abiotic environment

14. The 5 Levels: Level #5 Biosphere
The biosphere is the part of Earth where life exists

15. ENVIRONMENTAL ORGANIZATION
Biosphere - the entire Earth
Animals & plants adapt to best survive in the conditions of each Earth region. These regions are called the biomes.

16. Salt Marsh Ecosystem
Organism- egret, Seaside sparrow, Periwinkle snail, oyster, Laughing gull
Population- Laughing gull, Codgrass
Community- Sparrows eat the crabs, algae grows on grass, snail uses grass as shelter and protection
Ecosystem- how does temp., precipitation, soil affect the organisms?, river brings in nitrogen which helps the algae grow
Biosphere- where all life lives

17. Biotic and Abiotic Factors
Biotic: Laughing gulls, seaside sparrow, codgrass, snail, algae, jellyfish (any of the animals or plants)
Abiotic: sunlight, river (water), temperature, soil, rain (weather), nutrients from the nitrogen