1. Chapter 52 – An Introduction to Ecology and the Biosphere
I am the Lorax.
I speak for the trees.
I speak for the trees,
for the trees have no tongues.

2. Ecology
The study of interactions between organisms and the environment
Subfields of Ecology:
Organismal Ecology
Population Ecology
Community Ecology
Ecosystem Ecology
Landscape Ecology
Global Ecology

3. Ecology

4. Global climate
Sunlight/Seasons

5. Global Climate cont.
Ocean Currents
Wind
Precipitation Patterns

6. Terrestrial Biomes

7. Aquatic Biomes

8. Aquatic Biomes Lakes Wetlands Streams and Rivers Estuaries
Intertital Zone
Oceanic Pelagic
Coral Reefs
Marine Benthic Zone

9. Aquatic Zonation Vertical Stratification:
Photic zone – photosynthetic light
Aphotic zone – little to no light
Benthic zone – bottom substrate
Littoral zone – well lit, open water close to shore; freshwater only
Limnetic zone – well lit, open water away from shore; freshwater only
Thermocline – narrow stratum of drastic temperature change
Benthos – a community of organisms
Detritus – dead organic matter, food for the benthos

10. Biotic and Abiotic Factors
Other species
Herbivory
Predation
Parasitism
Disease
Competition
Abiotic:
Temperature
Water
Sunlight
Wind
Rocks and soil
Climate

11. Limiting species distribution
Biogeography – area limitations
Behavior and Habitat Selection – relates to evolution, adaptation, and the concept of niche
Biotic and Abiotic Factors
Seaweed, sea urchin, and limpet example