Abiotic/ Biotic

Abiotic

• Non living factors in an ecosystem, that an organism depends on.

Air• Atmosphere – contains Nitrogen 78%

Oxygen 21% • CO2 O2 in photosynthesis

Water• Most organisms are 80% water• Greater diversity with more water

Soil• Mixture of sand, silt, clay, and organic

substance – source of nutrients• Has many layers and may contain living

things in it.

Sunlight• Life requires energy – common source is

the sun• Sunlight determines season change

Temperature• 0- 50°C – most desirable temperature• Temperature depends on elevation and

latitude

Climate• Weather over time• Allows living things a consistent and

predictable environment.

Biotic

• The living or once living things in an ecosystem.

Dead Things

• Bones, Sticks, Leaves, Grass, Etc.

Living thing cause:

• Disease

• Predation - Food

• Protection

Ecology Notes

Biosphere• entire portion of the

earth that is inhabited by life.

Ecology

• Study of interactions that occur among organisms and their environment.

Eco – Homes

Ology – Study of

Ecosystem• Interaction of

living things with their non – living environment.

• An organism’s home or shelter.

1.Individual - One single organism of a species

2. Population- All the organisms of a species in a specific area

3. Community - All the populations in a specific area

4. Ecosystem- All the living and non living things in an area

5. Biomes - major types of communities and ecosystems that

are typical of broad geographic regions

6. Biosphere- Sphere of earth that comprises of all living things

Example

Food Web – interconnection of plants and animals

Food Chain – follow a single path

Autotrophs - make their own food (plants)

Heterotrophs – can’t make their own food (animals)

Producer – food source ( Plants, Bacteria)

Consumer – Eats producers or consumers ( dog, grasshopper, humans)

Decomposers – Breaks down consumers and producers ( Maggots, Mushrooms, Vultures)

Herbivore – Eats plants only (deer, cow)

Carnivore – Eats animals only (lion)

Omnivore – Eats Plants and Animals (bear, humans, birds)