01:119:115 Lecture Notes - Lecture 24: Semelparity And Iteroparity, Exponential Growth, Paramecium

• School: Rutgers University
• Department: Biological Science
• Course: 01:119:115
• Professor: All

Document Summary

Concept 53. 1: dynamic biological processes influence population density, dispersion, and demographics. Population ecology is the study of a population in relation to its environment, including: density (number of individuals per unit area or volume) dispersion, age structure, and population size. Population density is the result of an interplay between processes that add individuals to a population (birth, immigration) and those that remove individuals (death, emigration) Environmental and social factors influence the spacing of individuals in a population (dispersion) Fig 53. 4a clumped dispersion: individuals aggregate in patches: a clumped dispersion may be influenced by resource availability (food) A uniform dispersion is one in which individuals are evenly distributed (fig. 53. 4b: it may be influenced by social interaction such as territoriality, e. g. the defense of a bounded space against other individuals during nesting (sometimes aggressive) In a random dispersion, the position of each individual is independent of other individuals it occurs in the absence of strong attractions .