habitat and niche. individuals population growth species primary secondary succession interactions...
TRANSCRIPT
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Individuals
Population
Growth
Species
Primary
Secondary
SuccessionInteractions
Density
Distribution
Habitat
NicheDensity
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Where an animal lives All abiotic and biotic factors
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INCLUDES: Food it eats
Abiotic factors
Behavior
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Same habitat and similar Niche
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Competitive exclusion- 2 species compete the one better suited will push the other out or to extinction.
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Niche partitioning= 2 squirrel species naturally divided resources based on competitive advantage.
Evolutionary response= 2 species could have experienced divergent evolution resulting in different teeth size.
Both outcomes allow coexistence.
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Competition: 2 organisms fight for the same limited resources.
Interspecific-competition between different species. Eg. lawn different weeds.
Intraspecific-competition between members of same species. Eg. Birds in breeding season, males tolerate birds of different species in territory.
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One organism captures and feeds on another organism. Eg. Snakes.
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3 Main types: Mutualism- interspecies interaction where
both organisms benefit from relationship. Commensalism- relationship between 2
organisms in which one receives an ecological benefit.
Parasitism- relationship where one species directly harms the other.
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# of individuals
area
3 Types:
Clumped Uniform Random
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Diagram of surviving members over time from measured births.
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Immigration-into from another population Emigration-out of and into another pop. Exponential growth:
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Limited resources most have this type. Period of slow growth Brief exponential Levels of when stable=Also called Carrying Capacity
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Population Crash- sudden decline, rapidly.
Limiting factor- factor with greatest effect in keeping population size down.
2 Types: Density-dependent Density- independent
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Density-Dependent
Competition Predation Parasitism or
Disease
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Unusual Weather
Natural Disasters
Human Activities
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Sequence of biotic changes that regenerate damaged communities or
in a previously uninhabited area
Primary- development of uninhabited area.
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Reestablishment of damaged ecosystem with soil intact.