BIO205H5 Lecture Notes - Lecture 11: Carrying Capacity
Document Summary
The carrying capacity estimates for method 1 (median nearest neighbor) and method 2 (50% of population with a pod within this radius) Populations don"t always grow at the same rate - always a limit - called the carrying capacity. Carrying capacity of humans - a couple decades ago, scientists said earth was at carrying capacity for humans. Whales are called pods when in a group. On average each pod is 1. 7 whales. Take area and multiple by number of whales which gives density. An integrated approach on the whales and sighting histories - photos of free sighted individuals. Multiple pictures of same individual - mark-recapture study. Nt = population at a given time. Z = measure of how much individuals can be caught in population without endangering the growth of pop. Ct = number of captures per year. Catches; early 1820"s - australia and new zealand caught 4-6 whales every year. New zealand caught about 200 every year.
