habitat and niche. individuals population growth species primary secondary succession interactions...
TRANSCRIPT
Individuals
Population
Growth
Species
Primary
Secondary
SuccessionInteractions
Density
Distribution
Habitat
NicheDensity
Where an animal lives All abiotic and biotic factors
INCLUDES: Food it eats
Abiotic factors
Behavior
Same habitat and similar Niche
Competitive exclusion- 2 species compete the one better suited will push the other out or to extinction.
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.
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.
One organism captures and feeds on another organism. Eg. Snakes.
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.
# of individuals
area
3 Types:
Clumped Uniform Random
Diagram of surviving members over time from measured births.
Immigration-into from another population Emigration-out of and into another pop. Exponential growth:
Limited resources most have this type. Period of slow growth Brief exponential Levels of when stable=Also called Carrying Capacity
Population Crash- sudden decline, rapidly.
Limiting factor- factor with greatest effect in keeping population size down.
2 Types: Density-dependent Density- independent
Density-Dependent
Competition Predation Parasitism or
Disease
Unusual Weather
Natural Disasters
Human Activities
Sequence of biotic changes that regenerate damaged communities or
in a previously uninhabited area
Primary- development of uninhabited area.
Reestablishment of damaged ecosystem with soil intact.