Scientific Investigations Report 2008–5201
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2008–5201
Figure 18. Clumping and mat formation of Aphanizomenon flos-aquae (AFA) at the surface showing the potential for self-shading of AFA below the surface, Upper Klamath Lake, Oregon, 2006. (Top left image shows clumping formed a mat of AFA on the surface at site MDT on August 14, 2006. Top right, middle left and middle right images show the defined border of the mat of AFA at site MDT on August 14, 2006. Bottom images show the mat disturbed by a paddle or a water quality monitor at site MDT on September 8, 2007, and July 14, 2007, respectively. [Photographs taken by field personnel, U.S. Geological Survey.])