Biodiversity
A part of the ecosystem that is not now, and has never been, alive
Abiotic /Abiotic Factors
When one species hunts another for food
Predator-Prey Relationship (Predation)
Something that causes a population to stop growing or to decrease in size
Limiting Factor
When both species are benefitting from their interaction
Mutuallism
The packs of wolves living together in Yellowstone National Park is called a(n)
Population
All of the living and non-living things in an area is called a(n)
Ecosystem
When multiple species are trying to obtain (get and use) the same resource
Competition
Limiting factors can be ______ ______ such as predators or lack of prey, or they can be _______ _______, like fire, flood, drought, or diseases
biotic factors, abiotic factors
When one species is harmed while the other one is benefitting
Parasitism
All of the different populations that exist together in one area, NOT including the abiotic factors, is called a(n) __________.
Community
A part of the ecosystem that is alive or used to be alive.
Biotic / Biotic Factor
A close, long term relationship between two species
Symbiosis
Community interactions such as predator-prey and competition are also examples of _______ ________.
Limiting Factors
When one species is benefitting while the other is unaffected
Commensalism
Bears need berries to put on body fat before they hibernate. If the elk population is out of control and they eat too many berries, what can we expect to happen with the bear population? Why?
Decrease due to lack of food
Organization; Metabolism (energy usage); Response to Stimuli (in their environment); Growth & Development; Reproduction; Homeostasis (maintaining a balanced internal environment); and the Ability to Adapt are all examples of ________ _______ _________
While lions are hunting a water buffalo, they knock it into the water. While they try to drag the buffalo back to shore, an alligator comes and tries to steal the buffalo from the lions.
What TWO community interactions are happening in this situation?
Predation (Predator-Prey) & Competition
All organisms need these resources in order to survive:
Food, Light, Water, Shelter, & Space
a close, long term interaction between two species
Symbiosis / Symbiotic Interactions
Scientists introduced wolves to the ecosystem with the bears and elk. The wolves started hunting the elk, which reduced their population. What would we expect to see happen with the bear population? Why?
Increase, because there would be less competition for food.
The main reason an ecosystem is resilient (is able to bounce back) after a disruption like a fire or flood.
Biodiversity
How is Parastitism different from Predator-Prey Interactions?
In parasitism, the parasite is never seeking to kill its host because that would leave it homeless.
If a fire came and damaged a forest of acorn-producing oak trees, the squirrel population that lived in and ate from those trees would _____________ because _________ and _______ are limiting factors in this situation.
decrease, food & shelter
Unlike predators, parasites ________ seek to kill their host because then the parasite ____ _____ _____ and/or _____ _______.
do not, they would have no home or food source
A new species of predator is added to a biodiverse ecosystem full of other predators, prey populations, and many varieties of plant life.
What would you expect to see happen to the predator populations that were in the ecosystem before the new predator was added? Why?
Decrease, because the competition for prey (food) will increased.