es gibt global schon ein paar mehr Studien:
Bjorkman, A. W. (1996). Off-road Bicycle and Hiking Trail User Interactions: A Report to the Wisconsin Natural Resources Board. Wisconsin, Wisconsin Natural Resources Bureau of Research.
Cessford, G. R. (1995). Off-road impacts of mountain bikes: a review and discussion Off-Road Impacts of Mountain Bikes: A Review and Discussion Science & Research Series No 92. Wellington, NZ, Department of Conservation. pp: 42-70.
Chavez, D., P. Winter, et al. (1993). Recreational mountain biking: A management perspective. Journal of Park and Recreation Administration 11 1: 7.
Edger, C. O. (1997). Mountain biking and Marin Municipal Water District watershed. Trends 34 3: 5.
Fritz, S. C., J. C. Kingston, et al. (1993). Quantitative trophic reconstruction from sedimentary diatom assemblages - A cautionary tale. Freshwater Biology 30(1): 1-23.
Gander, H. and P. Ingold (1997). Reactions of Male Alpine Chamois Rupicapra r. rupicapra to Hikers, Joggers and Mountainbikers. Biological Conservation 79: 3.
Goeft, U. and J. Alder (2001). Sustainable mountain biking: A case study from the Southwest of Western Australia. Journal of Sustainable Tourism 9 3: 19.
Gruttz, J. and D. Hollingshead (1995). "Managing the Biophysical Impacts of Off-Road Bicycling" or "Shred Lightly." Environmental Ethics & Practices in Backcountry Recreation Conference, University of Calgary, Alberta.
Hammit, W. E. and D. N. Cole (1998). Wildland Recreation: Ecology and Management. New York, John Wiley and Sons, Inc.
Hellmund, P. C. (1998). Planning Trails with Wildlife in Mind: A Handbook for Trail Planners. Denver, Colorado State Parks.
Hendricks, W. W. (1997). Mountain bike management and research: An introduction. Trends, 34(3), 2-4.
Herrero, Jake, and Stephen Herrero (2000) Management Options for the Moraine Lake Highline Trail: Grizzly Bears and Cyclists. Unpublished Report for Parks Canada.
Kasworm, W. F. and T. L. Monley (1990). Road and trail influences on grizzly bears and black bears in northwest Montana. Bears: Their Biology and Management: Proceedings of the 8th International Conference, Victoria, B.C., International Association for Bear Research and Management.
Knight, R. L. and D. N. Cole (1991). Effects of recreational activity on wildlife in wildlands. Transactions of the North American Wildlife and Natural Resource Conference.
LeChevallier, M. W., M. Abbaszadegan, et al. (1999). Committee report: Emerging pathogens - viruses, protozoa, and algal toxins. Journal American Water Works Association 91(9): 110-121.
Leung, Y. F. and J. L. Marion (1996). Trail degradation as influenced by environmental factors: A state-of-the-knowledge review. Journal of Soil and Water Conservation 51(2): 130-136.
Marion, J. L. (2006). Assessing and Understanding Trail Degradation: Results from Big South Fork National River and Recreational Area. USDI, National Park Service.
Papouchis, C. M., F. J. Singer, et al. (2001). Responses of desert bighorn sheep to increased human recreation. Journal of Wildlife Management 65 3: 573-582.
Roggenbuck, J. W., D. R. Williams, et al. (1993). Defining Acceptable Conditions in Wilderness. Environmental Management 17 2: 187-197.
Schuett, M. A. (1997). State park directors' perceptions of mountain biking. Environmental Management 21(2): 239-246.
Spahr, Robin. (1990) Factors Affecting The Distribution Of Bald Eagles And Effects Of Human Activity On Bald Eagles Wintering Along The Boise River, 1990. Boise State University, Thesis.
Suk, T. J., S. K. Sorenson, et al. (1987). The relation between human presence and occurrence of Giardia Cysts in streams in the Sierra-Nevada, California. Journal of Freshwater Ecology 4(1): 71-75.
Taylor, A. R. and R. L. Knight (2003). Wildlife Responses to Recreation and Associated Visitor Perceptions. Ecological Applications 13 4: 12.
Taylor, D. N., K. T. Mcdermott, et al. (1983). Campylobacter Enteritis from untreated water in the Rocky Mountains. Annals of Internal Medicine 99 1: 38-40.
Thurston, E. and R. J. Reader (2001). Impacts of experimentally applied mountain biking and hiking on vegetation and soil of a deciduous forest. Environmental Management 27(3): 397-409.
Tyser, R. W. and C. A. Worley (1992). Alien flora in grasslands adjacent to road and trail corridors in Glacier National Park, Montana (USA). Conservation Biology 6(2): 253-262.
Van der Zande, A. N., J. C. Berkhuizen, H. C. van Latesteijn, W. J. ter Keurs, and A. J. Poppelaars (1984) Impact of outdoor recreation on the density of a number of breeding bird species in woods adjacent to urban residential areas. Biological Conservation 30: 1-39.
Vaske, J. J., M. P. Donnelly, et al. (1993). Establishing management standards - Selected examples of the normative approach. Environmental Management 17(5): 629-643.
White, D. D., M. T. Waskey, et al. (2006). A comparative study of impacts to mountain bike trails in five common ecological regions of the Southwestern U.S. Journal of Park and Recreation Administration 24(2): 20.
Wilson, J. P. and J. P. Seney (1994). Erosional impact of hikers, horses, motorcycles, and off-road bicycles on mountain trails in Montana. Mountain Research and Development 14(1): 77-88.
Wöhrstein, T. (1998). Mountainbike und Umwelt - Ökologische Auswirkungen und Nutzungskonflikte (Mountainbike and Environment - Ecological Impacts and Use Conflict). Saarbrücken-Dudweiler. Incomplete Reference, Pirrot Verlag & Druck.