BIOLOGY 2F03 Chapter Notes - Chapter 12: Net Reproduction Rate, Osmotic Shock, Cactus
22 Sep 2016
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Zooplankton respond to spring blooms of diatoms by increasing numbers: decreases are corresponding to decrease in sun and nutrients. These factors may be density dependent or density independent. Birth brings new individuals to population (in case u didn"t know that: number of eggs laid, number of seeds produced, rate of cell division. Viewing size changes implies looking at per capita rates: per capita rate: rate of process, if 100 individuals in population make. 10 offspring during a time, the per capita rate is 0. 10/offspring/time: per capita rate modification, through this we can determine magnitude of population change. Biotic factors (competition, disease) density dependent. Medium ground finch was dominant in the beginning, after drought they all decreased due to starvation. After rainfall some years later, they increased again because their seeds became abundant. Researchers viewed 2 droughts and 2 wet periods.
