| Front page | | Contents | | Back | | Printing instructions |
Pulse Effects of Herbicides on Periphyton in Streams and Recovery

Figure 4. Effect of metribuzin on the different phytoplankton groups during exposure and recovery. Circles: 2 hours of exposure. Squares: 23 hours of exposure, triangles: 48 hours of exposures.
| Front page | | Contents | | Back | | Printing instructions |
Version 1.0 October 2005, © Danish Environmental Protection Agency
|