NATR 320 Lecture Notes - Lecture 30: Optimality Theory
6 Oct 2020
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If one was to wait longer for the fish to reproduce their population, for several generations. Each time the fish mate, their offspring gain new mix of alleles. Some of these mixes might be better suited to high temperature . A way to test this is to maintain the trout populations over several generations at the higher temperature. Simplest interpretation of the data is that a genetic change occurred in the fish population, improving their adaptation to warmer temperatures. Large hydroelectric dams have pipes deep in the reservoir behind the dam that draw in water, run it through turbines to generate electricity, and then release it downstream. Deeper water tends to stay at a fairly constant temperature year-round. Large dams tend to reduce temperatures during the summer and increase them during the winter. They have moved the inflow pipes toward the surface during the summer, and deeper in winter to try to simulate the pre-dam temperature regime.
