Ecology Chapters 2-5

What is Ecology? The study of interactions between organisms and their environment

Biosphere Part of Earth that supports life Abiotic factors

Organisms & Their Environments Habitat Niche

Symbiosis Mutualism Commensalism Parasitism

Mutualism Relationship between organisms in which both benefit

Commensalism Relationship between organisms where one benefits and the other is neither harmed nor helped.

Parasitism Relationship in which one member benefits and the other is harmed.

Energy Pyramid

Water Cycle

Carbon Cycle

Nitrogen Cycle

Phosphorus Cycle

3.1 Communities Limiting factors Affect the ability of an organism to survive Biotic or abiotic Tolerance

Succession Natural changes to a community over time Primary Secondary

Primary Succession Colonization of barren land that leads to a climax community

Secondary Succession

4.1 Population Dynamics Do populations grow indefinitely? What controls a population’s growth?

Population Growth Patterns Exponential Growth

Growth with limiting factors

Carrying Capacity Factors that affect carrying capacity: Limiting factors Death rate Birth rate Life history patterns Predation Competition

Threats to Biodiversity

What Can You Do?