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    Author(s): Arthur W. Magill
    Date: 1989
    Source: Gen. Tech. Rep. PSW-GTR-117. Berkeley, CA: Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture; 55 p
    Publication Series: General Technical Report (GTR)
    Station: Pacific Southwest Research Station
    PDF: View PDF  (4.7 MB)

    Description

    Monitoring human impact on outdoor recreation sites and view landscapes is necessary to evaluate influences which may require corrective action and to determine if management is achieving desired goals. An inexpensive method to monitor environmental change is to establish camera points and use repeat color slides. Successful monitoring from slides requires the observer to determine if there are increases or decreases of trees, shrubs, or herbaceous plants; bare ground or duff; screening by trees; and soil erosion. Illustrated guidelines are given for land managers who must monitor human impact on recreation sites and view landscapes. Slides taken at various intervals demonstrate how to detect differences in views of timber harvesting, disturbed sites, and recreation sites, and suggests what to look for in scenes with subjects viewed from various distances. By using the process, visual sensitivity for detecting and evaluating environmental change, using repeat color photog-raphy, should be increased.

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Magill, Arthur W. 1989. Monitoring environmental change with color slides. Gen. Tech. Rep. PSW-GTR-117. Berkeley, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 55 p.

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    Keywords

    color slides, environmental change, monitoring, outdoor recreation, repeat photography, visual sensitivity

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