Quiz 8/21 Flashcards
What is an exponential graph?
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What is a logistic graph?
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The form of environmental resistance
Limiting factor
It limits population and increase population
Natural disasters
Disasters caused by nature
Density
Organisms per unit area
Toxic
Poisonous
Tail races
Area of water located behind a dam
Aquatic
Taking place in or on the water
Penetrate
To enter or force a way into
Depletion
The use or consumption of a resource
Turbid
Degree of cloudiness of water
Tributaries
A stream that flows into a larger stream or other body of water
Invasive
Moves in without right or permission, intrusive
Can affect a population no matter what it's density is Natural disasters Temperature Sunlight Human activities Physical characteristics Behaviors of organisms Density doesn't matter
Density Independent factors
Things can cause species to die out or move locations
Warm water holds less oxygen
Temperature
Organisms have adapted and evolved to increase survival
Physical characteristics
Travel to mate or find new food sources
Behaviors
Can only affect a population when it reaches a certain density Competition Predation Disease Parasitism Crowding Stress
Density dependent factors
When species fight for resources
This only happens when northern pike and walleye have high densities or the population of yellow perch is low
Competition
When population of density is high
Predation
High densities make it easier for parasites
When the population of this increases with he density of that population
Disease
When one species benefits at the expense of the other
Parasitism
Certain amount for an organism to live
Space availability
Has a negative effect on population
Stress
Lake Winnipeg is a shallow lake composed of two basins
A wide north and a narrow south basin
Yellow perch prefer temperature of
18-20 degrees Celsius
They will move or die
