12Carrying Capacity Example Australia originally did not have rabbits until they were introduced in 1859no competition, no predators, & plenty of food led to rapid growthpopulation eventually crashed because of disease & starvation
13Resource Limitsplant growth is limited by water supplies, sunlight, & mineral nutrientsa species reaches its carrying capacity when it consumes a particular natural resource at the same rate at which the ecosystem produces the resource
14Competitionmembers of the same population compete for the same resources as the carrying capacity nearscan also compete for social dominance, territory, mates, etc.
15Density Dependent or Independent cause of death is density dependent when populations are crowded (limited resources, predation, disease)ex. = disease carrying beetle can spread quickly through dense pine forests
17Density Dependent or Independent cause of death is density independent when a certain # of individuals die regardless of densityex. = severs weather, flooding, storms, etc. that affect all populations in that area equally