Overview
Name two types natural disasters
Hurricanes, tornados, drought, forest fires, floods, etc.
What the first step in primary succession?
Starts with bare rocks
What is the first step of secondary succession?
An event occurs to disturb the soil (forest fire, farming, logging etc.)
What is the difference between a biotic and abiotic factor
Biotic is living (animals and plants) biotic is non-living (sun, wind, rocks, water)
How do pioneer species seeds travel?
Wind and water
What is the second step of primary succession?
pioneer species move onto the rocks and begin to grow
What is the second step of secondary succession?
Grasses and tree seedling repopulate the soil in a short period of time
How does birth and death rate impact a population
it increases and decreases the number of organisms in the population
Define Succession
The natural, gradual change in communities over time
What is the third step of primary succession?
Pioneer species die and create soil where plants can grow
What is the third step of secondary succession?
Trees begin to grow crowding low growing plants
What is direct oberservation
Counting each organism in a space
What is a pioneer species?
small plants that grow on rocks, the first to repopulate an area (lichen, moss)
What is the fourth step of primary succession?
New plant communities grow
What is the fourth step of secondary succession?
A mature tree community becomes estabilshed
What is emigration and immigration?
Emigration- leaving a space/community
Immigration- moving to a space or community