CHARLES H. RACINE, (1) JAMES C. WALTERS (2) and M. TORRE JORGENSON (3) (Received 27 October 1997; accepted in revised form 7 May 1998) ABSTRACT. The use of airboats is expanding in Alaska, particularly in the interior. This study describes the nature, magnitude, and distribution of disturbances caused by airboat trails over floating mat fen wetlands in the Tanana Flats near Fairbanks, Alaska. Airphoto interpretation showed over 300 km of airboat trails by 1995, with a 15% ...