BIO120H1 Lecture Notes - Lecture 17: Pink Salmon, Little Brown Bat, Natural Resource Management
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BIO120H1 Full Course Notes
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A population is a collection of individuals living in an area: population size, n, is the number of individuals, population density is n/area. Little brown bats (myotis lucifugus); white patches are a pathogenic (disease- causing) fungus that leads to white nose syndrome . Population declines in myotis lucifugus bats due to white-nose syndrome (wns) Nt + 1: so, the general model is nt + 1 = f ( nt , challenge: choosing simple but realistic parameters for f. ): use iterated recursion equations; growth is stepwise and bumpy; best suited for episodic reproduction: also called continuous-time and discrete-time approaches, di erent organisms might be better t by one or the other. Some notational matters: time steps are classically indexed by subscripts, but parentheses are seen also: Nt is population size at time t, alternatively designated as n(t); N3 = n(3); etc: by convention, population growth starts at t = 0, so starting population size is.
