This preview shows page 1. Sign up to view the full content.
Unformatted text preview: population in that certain area. The fourth factor that controls population size is emigration. This is when an individual or group of individuals migrates from one place to another. Different from immigration, emigration is the action of migration to decrease the size of a population instead of increasing. The factors affecting population size in the video are immigration and births. Since the nutrias are outside of their natural habitat they have migrated, this is why the landscape and resources are being damaged. The other issue is that the nutrias also breed as fast as rabbits; this means one female can produce up to 40 young and those offspring can start to reproduce themselves in just 6 months. The manner in which the nutrias are destroying the landscape and resources, I predict the nutria will being to die off and the population will decrease....
View Full Document
This note was uploaded on 05/24/2010 for the course SCI275 SCI275 taught by Professor Johnscott during the Spring '10 term at University of Phoenix.
- Spring '10