USDA Forest Service

Pacific Southwest Research Station


Pacific Southwest Research Station
800 Buchanan Street
West Annex Building
Albany, CA 94710-0011

(510) 559-6300

United States Department of Agriculture Forest Service. USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.

Programs and Projects


Air Pollution and Global Change Impacts on Western Forest Ecosystems

Mark Fenn
Plant Pathologist
Employee E-mail Address Image
Phone: (951) 680-1565

Pacific Southwest Research Station
Forest Fire Laboratory
4955 Canyon Crest Drive
Riverside, CA 92507

Ph: (951) 680-1500
Fx: (951) 680-1501


University of Arizona, Tucson, AZ, Plant Pathology, B.Sc., 1981
University of California, Riverside, CA, Plant Pathology, Ph.D., 1986

Research Interests/Duties

My primary research interests are evaluating the long term effects of atmospheric nitrogen (N) deposition on sensitive biotic communities, forest health (including pests and pathogens), soil chemistry and biology, nutrient cycling processes, and water quality. I am interested in multiple stress and multiple pollutant interactions as they impinge on forest sustainability, and water quality and quantity of chronic N deposition.

Selected Publications
  • Fenn ME, Baron JS, Allen EB, Rueth HM, Nydick KR, Geiser L, Bowman WD, Sickman JO, Meixner T, Johnson DW, Neitlich P 2003 Ecological effects of nitrogen deposition in the western United States. BioScience 53:391-403.
  • Fenn ME, Poth MA, Bytnerowicz A, Sickman JO, Takemoto BK 2003 Effects of ozone, nitrogen deposition, and other stressors on montane ecosystems in the Sierra Nevada. In A Bytnerowicz, MJ Arbaugh, R Alonso (eds.), Ozone Air Pollution in the Sierra Nevada: Distribution and Effects on Forests. Development in Environmental Science 2:111-155. Elsevier. Amsterdam.
  • Fenn ME, de Bauer LI, HernŠndez-Tejeda T (eds) 2002 Urban Air Pollution and Forests: Resources at Risk in the Mexico City Air Basin. Ecol Stud Vol 156. Springer-Verlag, New York. Fenn ME, Poth MA, Arbaugh MJ 2002 A throughfall collection method using mixed bed ion exchange resin columns. In Proc., of the Internatíl Symp. on Passive Sampling of Gaseous Air Pollutants in Ecological Effects Research. April 9, 2001, Riverside, California, USA. TheScientificWorldJOURNAL 2:122-130.
  • Fenn ME, Poth MA 1999 Temporal and spatial trends in streamwater nitrate concentrations in the San Bernardino Mountains, Southern California. J Environ Qual 28:822-836. Fenn ME, Poth MA, Schilling SL, Grainger DB 2000 Throughfall and fog deposition of nitrogen and sulfur at an N-limited and N-saturated site in the San Bernardino Mountains, southern California. Can J For Res 30:1476-1488.
  • Fenn ME, Poth MA, Aber JD, Baron JS, Bormann BT, Johnson DW, Lemly AD, McNulty SG, Ryan DF, Stottlemyer R 1998 Nitrogen excess in North American ecosystems: Predisposing factors, ecosystem responses, and management strategies. Ecolo Appl 8:706-733.
  • Michalski G, Meixner T, Fenn M, Hernandez L, Sirulnik A, Allen E, Thiemens M 2004 Tracing atmospheric nitrate deposition in a complex semiarid ecosystem using d17O. Environ Sci & Technol (In Press).

Last Modified: Mar 28, 2013 02:54:58 PM