The remote sensing of algaeState agencies need rapid, synoptic and inexpensive methods for lake assessment to comply with the 1972 Amendments to the Federal Water Pollution Control Act. Low altitude aerial photography may be useful in providing information on algal type and quantity. Photography must be calibrated properly to remove sources of error including airlight, surface reflectance and scene-to-scene illumination differences. A 550-nm narrow wavelength band black and white photographic exposure provided a better correlation to algal biomass than either red or infrared photographic exposure. Of all the biomass parameters tested, depth-integrated chlorophyll a concentration correlated best to remote sensing data. Laboratory-measured reflectance of selected algae indicate that different taxonomic classes of algae may be discriminated on the basis of their reflectance spectra.
Document ID
19780050951
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Thorne, J. F. (Wisconsin State, Dept. of Natural Resources, Madison Wis., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1977
Subject Category
Environment Pollution
Meeting Information
Meeting: Annual Remote Sensing of Earth Resources Conference