Succession Trophic Levels Food Webs Biomes

 Series of predictable changes that occur over time in response to disturbances.  Two types Primary –Occurs on “new” ground (little/no soil)  Glacier melt  Volcanic lava/ash Secondary  Disturbance over existing soil (ex. old farmland)

 Occurs where no ecosystem was before.  On rocks, cliffs  Soil building occurs

 Soil particle sizes: how they are classified:

 Volcano adding new land to Hawaii

 Lichens begin growing

 Primary succession can be seen happening on the sidewalks.  If left alone, even NYC would return to a cement filled woodland.

 Grasses and other species begin to cover in subsequent years

Decomposers (bacteria and fungi) Producers (Plants) Primary Consumers (Herbivores – eat plants) Secondary Consumers (Carnivores – eat herbivores) Tertiary Consumers (Carnivores – eat carnivores) Top two also contain Omnivores (Eat plants and animals)

How the numbers of these type organisms actually compare to each other.

An example of a Food Web Shows how many organisms are interconnected by different paths.

Food chains are different from food webs. Chains only show ONE path of energy flow.

 Tropical Rain Forest

 Tropical Dry Forest

 Tropical Rain Forest  Tropical Dry Forest  Savannah

 Tropical Rain Forest  Tropical Dry Forest  Savannah  Desert

 Tropical Rain Forest  Tropical Dry Forest  Savannah  Desert  Grassland

 Tropical Rain Forest  Tropical Dry Forest  Savannah  Desert  Grassland  Temperate Woodland/shrubland

 Tropical Rain Forest  Tropical Dry Forest  Savannah  Desert  Grassland  Temperate Woodland/shrubland  Temperate Forest

 Tropical Rain Forest  Tropical Dry Forest  Savannah  Desert  Grassland  Temperate Woodland/shrubland  Temperate Forest  NW Coniferous Forest

 Tropical Rain Forest  Tropical Dry Forest  Savannah  Desert  Grassland  Temperate Woodland/shrubland  Temperate Forest  NW Coniferous Forest  Taiga

 Tropical Rain Forest  Tropical Dry Forest  Savannah  Desert  Grassland  Temperate Woodland/shrubland  Temperate Forest  NW Coniferous Forest  Taiga  Tundra