INTERACTIONS BETWEEN ORGANISMS . AND …

INTERACTIONS BETWEEN ORGANISMS . AND ENVIRONMENT 2 1 FUNCTIONAL RELATIONSHIPS An understanding of the relationships BETWEEN an organism and its environment can be attained only when the environmental factors that can be experienced by the organism are considered. This is difficult because it is first necessary for the ecologist to have some knowledge of the neurological and physiological detection abilities of the organism. Sound, for example, should be measured with an instrument that responds to sound energy in the same way that the organism being studied does. Snow depths should be measured in a manner that reflects their effect on the animal. If six inches of snow has no more effect on an animal than three inches, a distinction BETWEEN the two depths is meaningless.

organisms will have identical neurological or physiological thresholds at which stimuli are detected and responses made. The individuality of the relationships between an animal and its environment is illustrated in Figure 2-2. Certain conditions exist in the environment: the wind blows from a certain direction,

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  Organisms, Between, Interactions, Interactions between organisms

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