Ecology
- Eco, from Greek oikos = family, household
- The science of relationships among living things and their environment
- Relationships (interactions) among living things and their environment
- Links individual to globe
- Linked to evolution
- Global Ecology > Landscape Ecology > Ecosystem Ecology > Community Ecology > Population Ecology > Organismal Ecology
Biological Organization: Scales and Hierarchy

Ecology: A hierarchy of interactions
- Global Ecology > Landscape Ecology > Ecosystem Ecology > Community Ecology > Population Ecology > Organismal Ecology

Congo Basin of Central Africa - Dense forests (Height of Trees)
- Landscapes: interactions among ecosystems; spatial patterns
- Ecosystems: living and non-living things; the flow of energy and cycling of matter

Ecosystem and Landscape
- Community: all of the species in an ecosystem; trophic relationships, richness, and diversity (tree of life)

Community Ecology
- Population: all of the individuals in opne species in an area; demographics, density, dispersion

Clumped distribution of a population