Succession
What is an example of primary succession?
-volcanic eruption
-glacial retreat
What percent of energy is lost as heat through each trophic level?
10%
an organism that only eats animals
carnivore
an organism that only eats plants
herbivore
an organism that eats both plants and animals
omnivore
What is an example of secondary succession?
-flood
-hurricane
-harvesting
-wildfire
-tornado
-any type of natural disaster
What happens to the available energy as you move up a food web?
It decreases
an organism that makes its own food
producer/autotroph
Non-native species that grow rapidly
which type of succession occurs faster?
secondary
What type of succession occurs when a newly formed area is inhabited for the first time, where no soil or organisms exist?
Primary Succession
What are food webs composed of?
many interwoven food chains
an organism in a food chain that gets energy by eating the primary consumer
secondary consumer
First species to colonize an area (algae, lichen, mosses)
pioneer species
an organism in a food chain that gets energy by eating the producers
primary consumer
What type of succession occurs when there used to be organisms in the area and a disaster takes place so the area must be rebuilt, but soil and organisms still exist?
Secondary Succession
What improves sustainability and health of organisms in ecosystems?
Increased diversity of native species
Living and non-living things interacting in an environment
ecosystem
an organism in a food chain that gets energy by eating the secondary consumer
tertiary consumer
With the organisms given below correctly order them in a food chain:
mouse, hawk, prairie grass, snake
prairie grass ----> mouse ----> snake ----> hawk
What is the pattern/order of primary succession?
1. bare rock
2. pioneer species
3. soil formation
4. intermediate species
5. forest development
6. climax community
What is the result of a food web/chain if an organism is over hunted?
The organisms prey population would increase, while the organisms predator population would decrease.
The hierarchical feeding categories of organisms in a food chain
what is the correct order of trophic levels starting from the level with the most energy/biomass to the level with the least.
1. producers
2. primary consumers
3. secondary consumers
4. tertiary consumers
how do organisms compete for resources in an ecosystem?
they compete for both biotic and abiotic resources in order to survive