BIOSC 0370 Study Guide - Midterm Guide: Metapopulation, 1918 Flu Pandemic, Measles Virus
10 Apr 2018
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E(cid:4666)lx (cid:2912)x(cid:4667: estimating the intrinsic rate of natural increase, =r(cid:882)(cid:2869)/(cid:2904) if modeling geometric growth, r(cid:2911)= log(cid:2902)(cid:2868)(cid:2904) if modeling exponential growth. Nicholson: experiment 1: cycles reflect delay in responding to density dependent factors, adults were given unlimited food, adults overfeed and crash but lay a few eggs before dying, few larvae + small amount of food. Population growth new cycle: delay between the time that the adults produced a large # of eggs and the time it took the larvae to die from. Australia: introduced a cactus moth, left large holes and lesions in cacti which led to parasites and infections and a decrease in cacti populations. K: when predators were added, prey died out rapidly and so did the predators shortly after, huffaker artificially generated predator-prey cycles by adding barriers to predation. Predators disperse more slowly between food patches than their prey: 2. 21: producing a chemical defense to prevent herbivory fewer seeds (cost)
