BIO SCI 94 Chapter Notes - Chapter 53: Survivorship Curve, Exponential Growth, Carrying Capacity

• School: UC-Irvine
• Department: Biological Sciences
• Course: BIO SCI 94
• Professor: Nancy Aguilar- Roca

Document Summary

Density- number of individuals pre unit area or volume. Sometimes we could al individuals, other times , not so much . Or use number of nests , burrows and tracks. Mark recapture method -estimate size of wildlife populations. Density isn"t a static property, it changes when individuals are added or subtracted from a population. Immigration - when an individual moves into a population. Uniform - evenly spaced out ( this seems quite subjective) Territoriality - defense of bounded physical space against encroachment by other individuals. Random - is unpredictable , it just happens 9 wind blowing seeds) Factors that affect population density are: ecological needs of a species, structure of the environment, and interactions among individuals within the population. Demography - is the study of vital statistics of populations and how they change over time. birth rater and death rates.