r and K selection

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r and K selection

Paul Andersen explains the differences between an r and a K selected species. He starts with a brief description of population growth noting the importance of; r or growth rate, N or number of individuals in the population, and K the carrying capacity. He describes three different survivorship curves found in organisms. He lists the characteristics of r-selected species like bacteria and K-selected species like humans.

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Reviews

March 2014
Good video. The video may be a little too advanced for middle school. Great for high school.
June 2013
Although I have taught carrying capacity graphs but I like how the survivorship curve ties everything together. Thanks for being so helpful.