emily Chapter 53

emily Chapter 53 - Type I survivorship curve-humans who...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 53 Many populations cannot be counted due to large population size or a wide range In the mark-recapture method, individuals are marked and then let free and then re-evaluated later IMmigration-IN Clumped disperson-due to a resource, eg. a plant in one area that has lots of water and no plants in an area that lacks water; individuals have to be near each other to mate Uniform dispersion-eg. birds perched evenly spaced on a phone line Random dispersion-when dispersion isn’t really based on anything, eg. dandelions in a field; not very common Example of a cohort-students in our bio class
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Type I survivorship curve-humans, who have lots of parental care early in life Type II survivorship curve-squirrels Type III survivorship curve-mussels, who have lots of offspring because only a few will survive Agave plant lives for many years, and its environment is very arid but not extreme. After a rain storm, the plant shoots up a stalk with its seeds and then dies. Exponential growth is limited by resources such as food and space Some populations grow past the carrying capacity and then have a high death rate to reach K...
View Full Document

This note was uploaded on 01/25/2011 for the course BIO 1510 taught by Professor Unknown during the Spring '07 term at Georgia Tech.

Ask a homework question - tutors are online