Biology 2483A Lecture Notes - Lecture 3: Impact Factor, Basal Metabolic Rate, Turbulence
11 Dec 2017
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The actual geographic distribution of a species is also related to other factors, such as disturbance and competition. Because pla(cid:374)ts do(cid:374)"t (cid:373)ove, they are good indicators of the physical environment: ex. Aspen distribution can be predicted based on climate. Low temperatures and drought affect reproduction and survival. Physiological ecology is the study of interactions between organisms and the physical environments that influence their survival and persistence: physiological processes have optimal conditions for functioning, deviations from the optimum reduce the rate of the process. Stress- environmental change results in decreased rates of physiological processes, lowering the potential for survival, growth or reproduction. Acclimatization: adjusting to stress through behavior or physiology. Individuals with traits that enable them to cope with stress are favored. Over time, these genetic traits become more frequent in the population. Acclimatization and adaptation require investments of energy and resources representing possible trade-offs with other functions that can also affect survival and reproduction.
