BIOLOGY 197FH Lecture Notes - Lecture 18: Exponential Growth, Fecundity, Carrying Capacity
25 Apr 2016
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Document Summary
Disease when populations are dense, disease transmission rates increase. Predation if a prey species builds up, predators may feed preferentially on that species. Competition increasing densities intensifies competition for declining resources, resulting in lower birth rates. Toxic wastes accumulation of wastes may limit population density. Mutates more frequently ideally one will have a higher fitness. Population models: models allow us to better understand how complex interactions and processes work in population and communities. Fecundity the potential number of offspring an organism can produce in their lifetime. Survivorship- the ability to make it to sexual maturity. Carrying capacity the maximum number of individuals of a population that can be sustained with the resources available. Change in the number of individuals over time = number of individuals born (b) plus immigration (i) minus number of individuals lost to death (d) and emigration (e)
