GEOB 102 Lecture Notes - Lecture 21: Banff National Park, African Buffalo, Biogeography

• School: UBC
• Department: Geographical Biogeosciences
• Course: GEOB 102
• Professor: Simon Donner

Document Summary

Geob 102 (october 26, 2016) biogeography: dispersal & Some definitions: habitat biophysical factors where species live that match niche requirements, geographical range entire extent of species distribution (on map) Species physiological requirements (ex. what makes up fundamental niche: 2. Biotic interactions (ex. competition, predation something that keeps a species from where it otherwise could be: 3. Dispersal: dispersal, dispersal ability to move from birth site to a new site, 1. Ecological dispersal within the local geographic range due to random change/crowding: 2. Geographical dispersal expansion of range moves beyond niche: a. Jump dispersal long-distance dispersal (infrequent: b. diffusion slow extension of range over time ex. trees moving with climate. Emigration: size changes in populations occur due to interactions between individuals & environment. Logistic growth model: result of adding carrying capacity to exponential growth model, carrying capacity makes population stay the same, at k, growth rate = 0 (number of births = number of deaths)