ENGL121 Lecture Notes - Lecture 16: Snowshoe Hare, Interspecific Competition, Survivorship Curve
3 Feb 2016
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Lab 4: no assignment but, review questions for the lab exam* Interspecific competition and: rate of harvesting, selective foraging, niche overlap etc. Specialist food eater vs. generalist what happens when these two overlap: Reduction of one spp so species become non overlapping (allopatric) 3. Weaker spp gives up a resource and uses another (sympatric) Explore competition during lab using three species that compete for limited number of resources. Sometimes patterns can be easily predicted or not . Factors that influence: whether or not a factor that regulates a population is density dependent or independent. Density dependent factor: the change that this factor transmits is dependent on the number of individuals in the population. *density independent: as population density increases, mortality and birth are not affected. *density dependent: affected by the number of individuals per unit area: as. Population is increasing birth decreases and death increases (related about competition, predation).
