Previous photo pair1976 - 2005: Toklat Basin Lowlands near Toklat Basin12/17Next photo pair
lake photo pair
Photo Credits: Fred Dean (1976), Carl Roland (2005)
Ecoregion: Alaska Range Mountains
Change Type: Shrinking ponds
Shrinking ponds
Description:
This photo pair shows two views of the shoreline of a small pond near the lower East Fork of the Toklat River in the Toklat Basin ecoregion. This is an area strongly affected by permafrost (which underlies all of the low-statured vegetation seen in these images). It appears that the level of the pond has gone down in the interval of time separating these two images because there is a wider band of strand vegetation around this lake in the later photo, particularly if you examine the far shoreline carefully. Do you agree that there appears to be a wider band of vegetation along the lakeshore in the 2005 photo? What might cause such a phenomenon to occur?