Post on 25-Feb-2016
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Ecology: The BiomesYou will understand and explain the difference s between Earth’s major Biomes
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
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
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
TROPHIC PYRAMID
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)
4 Basic Land Biomes Forests - dominated by tree growth
Tropical Deciduous (Temperate) Taiga (Coniferous Trees)
Temperate Forest Biome
Tropical Forest
4 Land Biomes Grasslands- dominated by grasses
Savannah (tropical) Temperate Grassland Biome
Savannah Biome
4 Land Biomes Tundra- treeless, and cold with
permafrost year-round Arctic- Extreme Northern area Alpine- mountain regions
Tundra Biome
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
2 Basic Aquatic Biomes Freshwater- low salinity, created from
Run off from land Rivers and Streams Ponds and Lakes Wetlands Aquatic Biomes
2 Aquatic Biomes Marine- largest Biome on Earth
Intertidal/Coastal Estuaries (rivers enter oceans) Pelagic Deep Water Aquatic Biomes