GEOB 102 Study Guide - Final Guide: Permafrost, Eluvium, Evapotranspiration

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GEOB 102 Full Course Notes
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Organisms and the environment (ch 21 biogeographic processes: environmental factors, resources. Consumption causes a decrease in supply of resources (less is available) Abiotic environmental factors that influence organisms but are not consumed: climatic, temperature. Metabolic processes have a certain temperature range. Influences animal physiology and need for shelter. Indirectly influences the availability of/demand on resources: light - photoperiod. = seasonal changes in light that trigger life processes. Vegetation structure in exposed locations: edaphic factors = soil. Texture, structure, organic matter, organisms, acidity and alkalinity: geomorphic factors = landforms. Slope steepness = angle relative to horizontal. Slope aspect = orientation of the slope. Environmental factors and species distribution: theory of tolerance. Each and every species is able to exist and reproduce successfully only within a definite range of values for a particular environmental factor. S = organisms survive or persist but cannot grow. T = tolerance range for that factor, beyond tolerance is lethal.

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