What happens to an ecosystem after a volcanic eruption or a forest fire?
-some plants whose roots have survived will sprout back up -many plants whose seeds are already in the ground are activated after a fire and will sprout up soon after the fire, usually the next growing season -woodier plants and trees also start growing soon after the fire, but grow at a slower rate -after a few years, the burned forest thickens with woodier plants and sapling trees -it may take 200 years to reach a fully mature stand again
What is Primary Succession?
The development of living things that occurs where no living things or soil exist
What is Secondary Succession?
A process started by an event that reduces an already established ecosystem
What is a pioneer species?
They are the first organisms to appear in a newly made habitat
What happens as the pioneer species dies?
They add fertile nutrients to the soil and they also break up the rocks helping to create soil, so new organisms can populate the area
What is symbiosis?
A close relationship living in/on another organism
What is Ecology?
The study of the interactions of organisms with one another and with their environment
What is the Biosphere?
Thin zone of earth that supports life
What are the Ecosystems? (give examples)
Smaller units that make up the biosphere. All living and non-living parts of the environment. (Pond, Garden)
What is Biotic? (give examples)
Living factors in an ecosystem (ducks, fish, turtles, frogs, insects, dragonflies, bacteria)
What is Abiotic? (give examples)
Non-living factors in an ecosystem (water, rocks, sunlight, dirt)
What is a Community?
All biotic (living organisms) in a certain area (ecosystem) (all populations)
What is a Population?
All organisms of the same species living in an ecosystem