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TROPHIC CLASSIFICATION OF SELECTED COLORADO LAKES
Citation:
Blackwell, R. AND D. Boland. TROPHIC CLASSIFICATION OF SELECTED COLORADO LAKES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/4-79/0057 (NTIS N7922591).
Description:
Multispectral scanner data, acquired over several Colorado lakes using LANDSAT-1 and aircraft, were used in conjunction with contact-sensed water quality data to determine the feasibility of assessing lacustrine trophic levels. A trophic state index was developed using contact-sensed data for several trophic indicators. Relationships between the digitally processed multispectral scanner data, several trophic indicators, and the trophic index were examined using a supervised multispectral classification technique and regression techniques. Statistically significant correlations exist between spectral bands, several of the trophic indicators and the trophic state index. Color-coded photomaps were generated which depict the spectral aspects of trophic state.