A Periphytic Microflora Analysis of the Colorado River and Major Tributaries in Grand Canyon National Park and Vicinity (Classic Reprint) - Hardcover

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Excerpt from A Periphytic Microflora ysis of the Colorado River and Major Tributaries in Grand Canyon National Park and Vicinity<br/><br/>The algae of this community have frequently been employed as ecological indicators. The rationale for this type of characterization is based on the fact that living organisms exist under continuous environmental conditions, normally not determined by instantaneous chemical evaluations. In this way, although fluctuations in environmental parameters may occur, their dur ation may be of such minor importance as to not affect the biota even though a chemical change may be determined. Also, minor chemical changes may go undetected, but because of their duration, will affect the biota. Therefore, in the characterization of systems where available biotic components are in sufficient quantity, it becomes evident that the utilization of these organisms will yield a more valid concept of the ecological status and nature of the system. The objectives of this study are therefore based on the importance and utilization of the algal periphyton. The identification of the algal periphyton was of prime concern. The data obtained in this identification serves as the first inventory of its kind in Grand Canyon National Park and at the same time furnishes baseline information from which, through continued monitoring, changes in the system may be determined.

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