1. Ecology: The Biomes
You will understand and explain the difference s between Earth’s major Biomes

2. Recall: What is the basis for most ecosystems?
Energy derived from Sunlight is converted to food energy
Organisms that do this are called Primary Producers or Autotrophs

3. Recall: How is energy Transferred?
Food Energy transferred through predator/prey relationships
Herbivores- eat plants
Carnivores – eat animal tissue
Omnivores- eat both types of material
Scavengers- eat dead or decaying organic matter

4. Food Relationships produce a structure to the ecosystem
Structure is best known as the Trophic Pyramid
Pyramid design shows both the numbers of organisms goes down (by power of 10) as you go up pyramid
It also shows how energy is lost through each transition between levels

5. TROPHIC PYRAMID

6. So What is a Biome?
Biome – is the precise habitat of organisms as defined by its Abiotic Factors (primarily vegetation and precipitation amounts for land and amount of light, salinity, pressure and depth for aquatic environments)

7. 4 Basic Land Biomes Forests - dominated by tree growth
Tropical
Deciduous (Temperate)
Taiga (Coniferous Trees)
Temperate Forest Biome
Tropical Forest

8. 4 Land Biomes Grasslands- dominated by grasses Savannah (tropical)
Temperate
Grassland Biome
Savannah Biome

9. 4 Land Biomes Tundra- treeless, and cold with permafrost year-round
Arctic- Extreme Northern area
Alpine- mountain regions
Tundra Biome

10. 4 Land Biomes Deserts – dominated by lack of rainfall
Hot n Dry “traditional deserts”
Coastal -found near coastlines
Semi-Arid- Warm summers, cool winters
Cold- Antarctica
Desert Biome

11. 2 Basic Aquatic Biomes
Freshwater- low salinity, created from Run off from land
Rivers and Streams
Ponds and Lakes
Wetlands
Aquatic Biomes

12. 2 Aquatic Biomes Marine- largest Biome on Earth Intertidal/Coastal
Estuaries (rivers enter oceans)
Pelagic
Deep Water
Aquatic Biomes