BIOL 302 Chapter Notes - Chapter 13: Population Growth, Exponential Growth, Gyrfalcon
Document Summary
Chapter 13 dynamics over space and time: Populations change over time: density dependence with time delays causes population to be inherently cyclic. Metapopulations are composed of subpopulations that can experience independent population dynamics across space. All populations fluctuate in size over time. Many factors that contribute to this, such as changes in: availability of food, nesting sites, predation, competition, disease, parasites, weather, climate. Some species are exempt from this, they remain relatively stable: example: wolverine (gulo gulo) Hunt in packs 350 700 individuals. Many factors such as: body size, surface area to volume ratio. Etc: smaller bodies have higher reproductive rates. Example of algae: can reproduce at exponential rates in a matter of hours. Are much more affected by unfavourable environmental changes. Due to high surface area to volume ratio. Rates of population decline can be very high due to this factor: larger bodies/ animals: can live for several years.
