Biology 2483A Lecture Notes - Lecture 8: Apomixis, Parthenogenesis, Saguaro

• School: Western University
• Department: Biology
• Course: Biology 2483A
• Professor: Graeme Taylorand Sheila Macfie

Document Summary

Unit 3: populations distribution and abundance (chapter 9) sheila. Key concept #1: populations are dynamic; vary over time and space. For example, eurasian blackbirds spend all year around europe and australia: likelihood the 2 populations interact are low. If scotland and turkey populations migrate to morocco they become one population. Distribution: geographic are where individual species are present. Abundance: number of individuals of species found in given area a. ) Migration: mass movement of individuals from one region to another ;usually seasonally: dispersal mechanisms: animal. Active (walk, swim, fly: phoresy: one organism carries another (non-parasitic); hitchhikes, dispersal mechanisms: plant. Video example: jumping seed pod when rubbed. If all individuals interact then it remains one population. If division long enough you get a different population c. ) aspen and phramites grows clonally - how do you count individual(s): genet single genetic individual, ramet physiologically independent member of a genet.