Community Structure - Disturbance Flashcards
Intermediate Disturbance Hypothesis
Disturbance will keep communities from reaching equilibrium (NON EQUILIBRIUM model)
Disturbance
the indiscriminate catastrophic removal of all individuals from an area
Disturbances can be:
fires, hurricanes, tornadoes, landslide, avalance, etc
Frequent lare disturbances
forest fires, hurricanes
Community stucture, large disturbance
Community dominated by oppurtinistic fast colonizing species. Simple structure and low diversity
Rare, small disturbances
community structure depends on mechanisms like competition and predation. Low diversity if based on old relationships. Community is dominated by the few best predators
Intermediate in size and time
Some species can tolerate disturbances (colonizers) that move into an area after a disturbance. Highest level of diversity.