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Bio208 Population
Population
| Question | Answer |
|---|---|
| (blank) | Patterns of Richness |
| Island Biogeology | 1. Habitat fragmentation makes " habitat ilands" 2. IMplications for wildlife "preserves" and their design |
| Population Characteristics | Dispersion, Desity, Age, size |
| Dispersion | 1. Random least common, 2. uniformalty . 3. Clumped: aggregated (most common) |
| Popoulation size | 1. function of survival vs mortality.----------------------------------- 2. (births + Immigration) - (Deaths + Emigration).--------------- 3. The Balance of these determine population size and growth. |
| Survivorship Curve 1 | "K" species, - Die of old age |
| Survivorship Curve 2 | Constant proportion die at every age |
| Survivorship Curve 2 | small mammals, birds, some are invertibrates |
| Survivorship Curve 3 | Most common, "R" species, *Lost of offspring, but die young, *little maternal care, * Plants, many invertabrates |
| "R" | Reproduce alot |
| "K" | not alot of offspring |
| Survivorship Curves | Many are combination of >1curve |
| Logrithmic Growth (RATE) | Rate = r max (b>>>>d) |
| Logrithmic Growth (Ideal) conditions | dN/dt = rN |
| "rN" | Rate of reproduction |
| "N" | Population size |
| Logrithmic Growth (Density dependent) | b >>>d(rmax), b>>d, b = d at K, dN/dt =rmax ((K-N)N/K) |
| K | carrying capacity, By enviroment w/o damage to enviroment. |
Created by:
spitsbe
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