BIOA01H3 Lecture Notes - Population Connection, Dendroctonus, Wildfire Suppression

• School: UTSC
• Department: Biological Sciences
• Course: BIOA01H3
• Professor: Monica Sauer

Document Summary

In real life, it"s not usually tidy (logistic and exponential): Time lags in population response to increased density. Carrying capacity is an example of population regulation (a way which allows species to coexist) Many factors regulate populations: change the size and growth rate of populations. Some factors are density dependent factors: the importance of the factor in changing the population depends on the size (density) of the population. Usually: density = overall impact: resource consumption (provided w/ x amount of resources, predation, health: starvation, disease spread, parasites, territoriality / mating, waste accumulation. Intrinsic (behavioural) factors (ie killing each other off for space) Some factors in the environment are (extrinsic) density- independent: they are external to the population and the impact does not depend on the size of the population (these are abiotic processes: availability of many resources, climate variation. Escaping regulation how some species boom (suspectible to decline in resources leading to a.