In most parts of the West, mountain biking is increasing rapidly (Chavez 1999). ... Mountain biking can be divided into on-trail and off-trail use for purposes of discerning environmental impacts. ... McPherson and Simpson (1998) have quantified this problem at sites outside the basin and are experimenting with tree shade to reduce vehicle temperatures and evaporation. Water-based Use: Impacts of Motorized Watercraft a Trends in motorized watercraft use affect most residents andanbsp;...
|Title||:||Lake Tahoe Watershed Assessment: Untitled|
|Author||:||Dennis D. Murphy, Christopher M. Knopp, Pacific Southwest Research Station|