Principles of Ecology

Chapter 2.1

Biotic & Abiotic Factors

Biotic = Living organisms

Abiotic = Nonliving Soil,Air,Water Substrate

Population:Number of

IndividualsSame Species In an area or

place

CommunityAll the Plants

& Animals In a given area? Community

of Del Mar

Forest Community …………..

Ecosystem: Both biotic and abiotic factors in a large area:

Habitat = Place

Niche = Role Producer,

Consumer or Decomposer

Adaptations

Do not overlapCompetition

eventually is harmful

Specialized adaptation wins out

Organism Interrelationships:

Beneficial Symbiosis=

Living together Commensalism=

Only one benefits Mutualism=

Both benefit

Harmful: Parasitism=

One benefits &

Host slowly harmed

Tape worm Parasite: You are harmed because it

lives off your intestinal fluids Segments break off to form a

new worm!

Fungi = carbon dioxide moisture

Algae = food Oxygen MUTUAL

SYMBIOSIS