Phytosphere Research

Selected Publications

A selection of papers, research reports, and websites authored or co-authored by Phytosphere Research principals Elizabeth A. Bernhardt and/or Tedmund J. Swiecki. See also Online Resources for links to our most recent publications and reports, sorted by topic area.

Report / paper title Available from:
Swiecki, T. J.; Bernhardt, E. A. 2003-date. California Oak Disease and Arthropod (CODA) database. Online database. online
Swiecki, T. J.; Bernhardt, E. A.; Aram, K.; Rizzo, D. M.; Kasuga, T.; and Bui, M. 2016. Phytophthora ramorum causes cryptic bole cankers in canyon live oak. Plant Health Prog. 17:20-26. online
Kasuga, T.; Bui, M.; Bernhardt, E. A.; Swiecki, T. J.; Aram, K.; Cano, L.M.; Webber, J.; Brasier, C.; Press, C.; Grunwald, N.J.; Rizzo, D. M.; Garbelotto. 2016. Host-induced aneuploidy and phenotypic diversification in the Sudden Oak Death pathogen Phytophthora ramorum. BMC Genomics 17:385 online
Swiecki, T.; Bernhardt, E. 2016. Sudden oak death in California. Pages 731-756. In: Paine, T.D., Lieutier, F. Eds. Insects and diseases of Mediterranean forest systems. Switzerland: Springer International Publishing. 892 p. online
Bernhardt, E.; Swiecki, T. 2015. Long-Term Performance of Minimum-Input Oak Restoration Plantings. Proceedings of the Seventh symposium on oak woodlands: Managing oak woodlands in a dynamic world. Visalia, CA. November 3-6, 2014, Visalia, California. Gen. Tech. Rep. PSW-GTR-251. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture: 397-406. online
Rooney-Latham, S.; Blomquist, C.; Swiecki, T.; Bernhardt, E. 2015. Phytophthora tentaculata. Forest Phytophthoras 5(1). online
Rooney-Latham, S.; Blomquist, C.; Swiecki, T.; Bernhardt, E., Frankel, S.J. 2015. First detection in the USA: New plant pathogen, Phytophthora tentaculata, in native plant nurseries and restoration sites in California. Native Plants Journal 16:23-25. online
Swiecki, T.; Bernhardt, E. 2015. Phytophthora ramorum canker (sudden oak death) disease risk and progress in coast live oak, 2000-2012. Proceedings of the Seventh symposium on oak woodlands: Managing oak woodlands in a dynamic world. Visalia, CA. November 3-6, 2014, Visalia, California. Gen. Tech. Rep. PSW-GTR-251. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture: 563-572 online
Bernhardt, E.; Swiecki, T.J. 2014. Visualizing Sudden Oak Death, Part 1: Disease progress in highly susceptible coast live oaks [Video file]. online
Bernhardt, E.; Swiecki, T.J. 2014. Visualizing Sudden Oak Death, Part 2: Slow decline in coast live oak - intermediate resistance [Video file]. online
Bernhardt, E.; Swiecki, T.J. 2014. Visualizing Sudden Oak Death, Part 3: Resistant reactions in coast live oak [Video file]. online
Bernhardt, E.; Swiecki, T.J. 2014. Visualizing Sudden Oak Death, Part 4: Disease progression in tanoaks [Video file]. online
Bernhardt, E.A.; Swiecki, T.J. 2013. Management of Phytophthora ramorum in tanoak and oak stands. Final Report - Forest Service Agreement No. 11-JV-11272131-076. Prepared for USDA Forest Service, Pacific Southwest Research Station, Berkeley, CA. 12 p. online
Swiecki, Tedmund J.; Bernhardt, Elizabeth A. 2013. A reference manual for managing sudden oak death in California. Gen. Tech. Rep. PSW-GTR-242. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. 129 p. online
Swiecki, T. J.; Bernhardt, E.; Aram, K.; M.; Rizzo, D.M. 2013. Diagnosis and management of Phytophthora ramorum in canyon live oak, an atypical bole canker host. Pages 80-83 in: Frankel, S.J.; Kliejunas, J.T.; Palmieri, K.M.; Alexander, J.M. tech. coords. Proceedings of the Sudden Oak Death Fifth Science Symposium. Gen. Tech. Rep. PSW-GTR-243. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. 169 p. online
Swiecki T.J.; Bernhardt, E.A. 2012. Jepson Prairie Preserve Vegetation Monitoring Transects: Analysis of data from 2001 through 2011. Vacaville CA: Phytosphere Research. Prepared for Solano Land Trust, Fairfield, CA. 31p. + Addendum 1 - Sept 2013: Analysis of additional reduced sampling scenarios. 17p. online
Aram, K.; Swiecki, T.; Bernhardt, E.; Rizzo, D.M. 2011. Canyon live oak (Quercus chrysolepis) is susceptible to bole infection by Phytophthora ramorum. (Abstract). APS-IPPC 2011 Joint Meeting in Honolulu, Hawaii, August 6–10, 2011. Phytopathology 101:S8 online
Swiecki, T. J.; Bernhardt, E.; Garbelotto, M.; Fichtner, E. 2011. The exotic plant pathogen Phytophthora cinnamomi: A major threat to rare Arctostaphylos and much more. pp. 367–371. J. W. Willoughby, B. K. Orr, K.A. Schierenbeck, and N. J. Jensen [eds.], Proceedings of the CNPS Conservation Conference: Strategies and Solutions, 17–19 Jan 2009, California Native Plant Society, Sacramento, CA.
online
Swiecki, T.J.; Bernhardt, E. 2010. Long-term trends in coast live oak and tanoak stands affected by Phytophthora ramorum canker (sudden oak death). In: Frankel, S.J.; Kliejunas, J.T.; Palmieri, K.M., tech. coords. Proceedings of the sudden oak death fourth science symposium. Gen. Tech. Rep. PSW-GTR-229. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station: 207–209. online
Bernhardt, E. A., Swiecki, T. J. 2010. Urban Forest Management Plan Toolkit. Website. http://ufmptoolkit.com online

Swiecki, T. J.; Bernhardt, E.. 2008. Increasing distance from California bay reduces the risk and severity of Phytophthora ramorum canker in coast live oak. Pages 181-194 in: Frankel, S. J.; Kliejunas, J. T.; Palmieri, K. M., tech. coords. Proceedings of the sudden oak death third science symposium. Gen. Tech. Rep. PSW-GTR-214. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. 491 p. http://www.fs.fed.us/psw/publications/documents/psw_gtr214/psw_gtr214_181-194_swiecki.pdf

online proceedings

Swiecki, T. J.; Bernhardt, E. 2008. Impacts of Phytophthora ramorum canker and other agents in Sonoma County forests. Pages 209-233 in: Merenlender, A.; McCreary, D.; Purcell, K. L., Tech. eds. Proceedings of the sixth symposium on oak woodlands: today’s challenges, tomorrow’s opportunities. Gen. Tech. Rep. PSW-GTR-217. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. 677 p.
http://www.fs.fed.us/psw/publications/documents/psw_gtr217/psw_gtr217_209.pdf

online proceedings

Swiecki, T. J.; Bernhardt, E. 2008. Regeneration of oaks and tanoak in Phytophthora ramorum-affected forests. Pages 357-370 in: Merenlender, A.; McCreary, D.; Purcell, K. L., Tech. eds. Proceedings of the sixth symposium on oak woodlands: today’s challenges, tomorrow’s opportunities. Gen. Tech. Rep. PSW-GTR-217. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. 677 p.
http://www.fs.fed.us/psw/publications/documents/psw_gtr217/psw_gtr217_357.pdf

online proceedings
Swiecki, T. J.; Bernhardt, E. A.  2008. Effects of grazing on upland vegetation at Jepson Prairie Preserve, Solano County, CA. Third year (2007) results and final report. Prepared for Solano Land Trust, Fairfield, CA. 76 p. online
Swiecki, T. J.; Bernhardt, E. A.  2008.  Phytophthora ramorum canker (sudden oak death) in coast live oak and tanoak, 2000-2006: factors affecting disease risk, disease progression, and failure potential. 2006-2007 Contract Year Annual Report.  Prepared for Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture, Berkeley, CA. 38 p. online
Meyers, K. J.; Swiecki, T. J.; Mitchell, A. E. 2007. An exploratory study of the nutritional composition of tanoak (Lithocarpus densiflorus) acorns after potassium phosphonate treatment. J. Agric. Food Chem. 55: 6186-6190. Abstract online
Swiecki, T. J.; Bernhardt, E. A.  2007.  Influence of local California bay distribution on the risk of Phytophthora ramorum canker (sudden oak death) in coast live oak. Final Report.  Prepared for Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture Berkeley, CA. 30 p. online
Swiecki, T. J.; Bernhardt, E. A.  2007. Effects of grazing on upland vegetation at Jepson Prairie Preserve, Solano County, CA. Progress report 2: second year (2006) results. Prepared for Solano Land Trust, Fairfield, CA. 50 p. online
Swiecki, T. J.; Bernhardt, E. A.  2006.  A field guide to insects and diseases of California oaks. Gen. Tech. Rep. PSW-GTR-197. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture. 151 p. USDA Forest Service - hardcopy and online
Meyers, K. J.; Swiecki, T. J.; Mitchell, A. E. 2006. Understanding the Native Californian Diet.  Identification of condensed and hydrolyzable tannins in tanoak acorns (Lithocarpus densiflorus).  Journal of Agricultural and Food Chemistry 54(20); 7686-7691 Abstract online
Swiecki, T. J.; Bernhardt, E. A.  2006. Planning for the Future of Rocklin's Urban Forest. Prepared for Community Development Department City of Rocklin, CA. 232 p. online
Swiecki, T. J.; Bernhardt, E. A.  2006.  Phytophthora ramorum canker (sudden oak death) in coast live oak and tanoak, 2000-2005: factors affecting disease risk, disease progression, and failure potential. 2005-2006 Contract Year Annual Report.  Prepared for Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture, Berkeley, CA. 39 p. online
Swiecki, T. J.; Bernhardt, E. ; Drake, C. Costello, L.R. 2006. Relationships between Phytophthora ramorum canker (sudden oak death) and failure potential in coast live oak. pp. 427-453 in: Proceedings of the sudden oak death second symposium: the state of our knowledge. 2005 January 18-21; Monterey, CA. Gen. Tech. Rep. PSW-GTR-196. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture; p. 571. http://www.fs.fed.us/psw/publications/documents/psw_gtr196/psw_gtr196_007_064Swiecki.pdf online proceedings
Swiecki, T. J.; Bernhardt, E. 2006. Disease risk factors and disease progress in coast live oak and tanoak affected by Phytophthora ramorum canker (sudden oak death). pp. 383-411 in: Proceedings of the sudden oak death second symposium: the state of our knowledge. 2005 January 18-21; Monterey, CA. Gen. Tech. Rep. PSW-GTR-196. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture; p. 571. http://www.fs.fed.us/psw/publications/documents/psw_gtr196/psw_gtr196_006_077Swiecki.pdf online proceedings
Swiecki, T. J.; Bernhardt, E. A.  2006. Effects of grazing on upland vegetation at Jepson Prairie Preserve, Solano County, CA. Progress report 1: first year (2004-2005) results. Prepared for Solano Land Trust, Fairfield, CA. 44 p. online

Swiecki, T. J.; Bernhardt, E. A.  2005.  Phytophthora ramorum canker (sudden oak death) in coast live oak and tanoak, 2000-2004: factors affecting disease risk, disease progression, and failure potential. 2004-2005 Contract Year Annual Report.  Prepared for Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture, Berkeley, CA. 41 p.

online
Swiecki, T. J.; Bernhardt, E. A.  2005.  2004 Resurvey of permanent plots for monitoring Phytophthora ramorum canker (sudden oak death) in Sonoma County.  Prepared for Department of Plant Pathology, UC Davis.  40 p. online
Swiecki, T. J.; Bernhardt, E. A.; Garbelotto, M. 2005. Distribution of Phytophthora cinnamomi within the range of Ione manzanita (Arctostaphylos myrtifolia).  Prepared for California Department of Fish and Game.  Vacaville CA: Phytosphere Research and University of California, Berkeley. online
Swiecki, T. J.; McCreary, D. D. 2005. Oak and oak woodland ordinances. Chapter 8, pages 88-97 in: Guisti, G.A., McCreary, D.D.;, Standiford, R.B. (editors). A Planners Guide for Oak Woodlands. Second Edition. ANR Publication 3491. Oakland: Agriculture and Natural Resources, University of California. UC ANR Publications
Swiecki, T. J.; Bernhardt, E. 2004. Phytophthora ramorum canker (sudden oak death) in coast live oak and tanoak: factors affecting disease risk, disease progression, and failure potential. 2003-2004 contract year annual report.. Prepared for USDA Forest Service Pacific Southwest Research Station, Berkeley, CA. 35 pp. online
Swiecki, T. J.; Bernhardt, E. 2003. Phytophthora ramorum canker: Factors affecting disease progression and failure potential. 2002-2003 Contract Year Annual Report. Prepared for USDA Forest Service Pacific Southwest Research Station, Berkeley, CA. 38 pp. online
Swiecki, T. J.; Bernhardt, E. 2003. Relationships between Phytophthora ramorum canker (sudden oak death) and failure potential in coast live oak. Prepared for USDA Forest Service Pacific Southwest Research Station, Berkeley, CA. 57 pp. online
Swiecki, T. J.; Bernhardt, E. A.; Garbelotto,.M. 2003. First report of root and crown rot caused by Phytophthora cinnamomi affecting native stands of Arctostaphylos myrtifolia and A. viscida in California. Plant Disease 87 (11): 1395. Journal article
Swiecki, T. J.; Bernhardt, E. A. 2003. Effects of stand thinning on water relations, growth, and condition of three tree species in a riparian restoration planting. Pages 280-289 in: California Riparian Systems: Processes and Floodplain Management, Ecology, and Restoration. 2001 Riparian Habitat and Floodplains Conference Proceedings. Sacramento, CA: Riparian Habitat Joint Venture. online proceedings
Swiecki, T. J.; Bernhardt, E. A. 2003. Diseases threaten the survival of Ione manzanita (Arctostaphylos myrtifolia). Prepared for San Francisco State University / California Department of Fish and Game. 49 pp. online
Swiecki, T. J.; Bernhardt, E. A. 2002. Factors related to Phytophthora canker (sudden oak death) disease risk and disease progress in coast live oak and tanoak. Prepared for USDA Forest Service Pacific Southwest Research Station, Berkeley, CA. 36 pp. online
Swiecki, T. J.; Bernhardt, E. A. 2002. Effects of fire on naturally occurring blue oak (Quercus douglasii) saplings. Pages 251-259 in: Proceedings of the fifth symposium on oak woodlands: oaks in California’s changing landscape. Gen. Tech. Rep. PSW-GTR-184. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture. online
Swiecki, T. J.; Bernhardt, E. A. 2002. Evaluation of Stem Water Potential and Other Tree and Stand Variables as Risk Factors for Phytophthora ramorum Canker Development in Coast Live Oak. Pages 787-798 in: Proceedings of the fifth symposium on oak woodlands: oaks in California’s changing landscape. Gen. Tech. Rep. PSW-GTR-184. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture. http://www.treesearch.fs.fed.us/pubs/6199 online

Swiecki, T. J.; Bernhardt, E. A. 2002. (paper abstract). Factors Related to Phytophthora ramorum Canker (Sudden Oak Death) Disease Risk in Coast Live Oak and Tanoak. Sudden Oak Death Science Symposium, December 15-18, 2002, Monterey, California.

Swiecki, T. J.; Bernhardt, E. A. 2002. (poster abstract) Disease progress and changes in stem water potentials of coast live oak and tanoak affected by Phytophthora ramorum canker (sudden oak death). Sudden Oak Death Science Symposium, December 15-18, 2002, Monterey, California.
Swiecki, T. J.; Bernhardt, E. A. 2002. A delicate balance: Impacts of diseases and insects on the health of California oaks. Western Arborist 29(1): 24-29. online
Swiecki, T.; Bernhardt, E. 2002. Exotic and native plant monitoring at Jepson Prairie Preserve, 2002. Prepared for Solano Land Trust, Fairfield, CA. 51 pages. online
Swiecki, T. J.; Bernhardt, E. A. 2001. Guidelines for Developing and Evaluating Tree Ordinances. Website. http://www.isa-arbor.com/publications/ordinance.aspx online
Little, R.; Swiecki, T. J.; Tietje, W. 2001. Oak woodland invertebrates: the little things count. Publication 21598. Oakland, CA: Univ. of California, Agriculture and Natural Resources, Communication Services. 14 pp. UC ANR Publications
Swiecki, T. J.; Bernhardt, E. A. 2001. Evaluating and monitoring effects of Phytophthora ramorum canker (sudden oak death) in Sonoma County woodlands and forests. Phytosphere Research, Vacaville, CA. Prepared for: Sonoma County Fish and Wildlife Advisory Board, Santa Rosa, CA. 32 pp. online
Swiecki, T. J.; Bernhardt, E. A. 2001. Evaluation of stem water potential and other tree and stand variables as risk factors for Phytophthora canker development in coast live oak and tanoak. Phytosphere Research, Vacaville, CA. Prepared for State and Private Forestry, USDA - Forest Service, Vallejo, CA. 31 pp. online
Swiecki, T.; Bernhardt, E. 2001. Exotic and native plant monitoring at Jepson Prairie Preserve, 2001. Prepared for Solano Land Trust, Fairfield, CA. 46 pages. online
Swiecki, T. J.; Bernhardt, E. 2000. Effects of Stand Thinning on Water Relations, Growth, and Condition of Three Tree Species in the Downtown Guadalupe River Contract 1A Riparian Planting. Prepared for Santa Clara Valley Water District, San Jose, CA. 42pp.  
Swiecki, T. J.; Bernhardt, E. A. 1999. PG&E line clearance efficiency study: effects of pruning method on pruning efficiency, pruning cycle length, and long-term line clearance costs. Final project report. Prepared for Technical and Ecological Services, Pacific Gas and Electric Company, San Ramon, CA. 78 pp.  
Swiecki, T. J; Bernhardt, E. A. 1998. Understanding blue oak regeneration. Fremontia 26:19-26. Journal article, online
Swiecki, T. J; Bernhardt, E. A. 1998. The Role of Local Ordinances in Protecting Oaks and Oak Woodlands. online
Bernhardt, E. A.; Swiecki, T. J. 1997. Effects of cultural inputs on survival and growth of direct seeded and naturally occurring valley oak seedlings on hardwood rangeland. Pages 301-311 in: Proceedings of the Symposium on Oak Woodlands: Ecology, Management, and Urban Interface Issues. Gen. Tech. Rep. PSW-160. Albany, CA: USDA Forest Service Pacific Southwest Forest and Range Exp. Stn. online proceedings
Swiecki, T. J.; Bernhardt, E. A.; Drake, C. 1997. Stand-level status of blue oak sapling recruitment and regeneration. Pages 147-156 in: Proceedings of the Symposium on Oak Woodlands: Ecology, Management, and Urban Interface Issues. Gen. Tech. Rep. PSW-160. Albany, CA: USDA Forest Service Pacific Southwest Forest and Range Exp. Stn. online proceedings
Swiecki, T. J.; Bernhardt, E. A.; Drake, C. 1997. Factors affecting blue oak sapling recruitment. Pages 157-167 in: Proceedings of the Symposium on Oak Woodlands: Ecology, Management, and Urban Interface Issues. Gen. Tech. Rep. PSW-160. Albany, CA: USDA Forest Service Pacific Southwest Forest and Range Exp. Stn. online proceedings
Swiecki, T. J.; Bernhardt, E. A.; Arnold, R. A. 1997. The California oak disease and arthropod (CODA) database. Pages 543-552 in: Proceedings of the Symposium on Oak Woodlands: Ecology, Management, and Urban Interface Issues. Gen. Tech. Rep. PSW-160. Albany, CA: USDA Forest Service Pacific Southwest Forest and Range Exp. Stn. online proceedings
Bernhardt, E.; Swiecki, T. J. 1993. The State of Urban Forestry in California - 1992. Prepared for CDF Urban Forestry Program, Riverside, CA. 61pp. CDF-UCFP
Swiecki, T. J.; Bernhardt, E.; Drake, C. 1993. Factors Affecting Blue Oak Sapling Recruitment and Regeneration. Prepared for CDF Strategic Planning Program, Sacramento, CA. 131pp. online
Gubler, W. D.; Bernhardt, E. A. 1992. Cavity rot of winter melon caused by Verticillium dahliae. Plant Disease 76:416-417. Journal article
Cucuzza, J. D.; Watterson, J. C.; Bernhardt, E. A. 1992. Foot rot of tomato caused by Fusarium solani in California. Plant Disease 76:101. Journal article
Bernhardt, E. A.; Swiecki, T. J. 1991. Guidelines for Developing and Evaluating Tree Ordinances. Prepared for: CDF Urban Forestry Program, Sacramento, CA. 76pp. CDF-UCFP
Swiecki, T. J. 1991. Fungi among the oaks. Pages 70-71 in: Pavlik, B.; Muick, P; Johnson, S.; Popper, M. Oaks of California. Los Olivos, CA. Cachuma Press. Book section
Bernhardt, E. A.; Swiecki, T. J. 1991. Minimum input techniques for restocking valley oaks. Pages 1-8 in: Proceedings of the Symposium for Oak Woodlands and Hardwood Rangeland Management. Gen. Tech. Rep. PSW-126. Berkeley, CA: USDA Forest Service Pacific Southwest Forest and Range Exp. Stn. online proceedings
Swiecki, T. J.; Bernhardt, E. 1991. Minimum Input Techniques for Restoring Valley Oaks on Hardwood Rangeland. Prepared for CDF Forest and Rangeland Resource Assessment Program, Sacramento, CA. 71pp. CDF-FRAP
Swiecki, T. J.; Bernhardt, E. A.; Arnold, R. A. 1991. Insect and disease impacts on blue oak acorns and seedlings. Pages 149-155 in: Proceedings of the Symposium for Oak Woodlands and Hardwood Rangeland Management. Gen. Tech. Rep. PSW-126. Berkeley, CA: USDA Forest Service Pacific Southwest Forest and Range Exp. Stn. online proceedings
Swiecki, T. J.; Bernhardt, E. A.; Arnold, R. A. 1991. Monitoring insect and disease impacts on rangeland oaks in California. Pages 208-213 in: Proceedings of the Symposium for Oak Woodlands and Hardwood Rangeland Management. Gen. Tech. Rep. PSW-126. Berkeley, CA: USDA Forest Service Pacific Southwest Forest and Range Exp. Stn.
online proceedings
Swiecki, T. J.; MacDonald, J. D. 1991. Soil salinity enhances Phytophthora root rot of tomato but hinders asexual reproduction by Phytophthora parasitica. J. Amer. Soc. Hort. Sci. 116:471-477. Journal article
Swiecki, T. J. 1990. Oak diseases and insects: a delicate balance. Fremontia 18:58-63. Journal article, online (updated version)
Swiecki, T. J.; Bernhardt, E. A.; Arnold, R. A. 1990. Impacts of diseases and arthropods on California's rangeland oaks. Prepared for CDF Forest and Rangeland Resource Assessment Program, Sacramento, CA. 94pp.
CDF-FRAP
Bernhardt, E.; Swiecki, T. J. 1989. The State of Urban Forestry in California. Prepared for CDF Urban Forestry Program, Sacramento, CA. 68pp.
CDF-UCFP
Bernhardt, E.; Dodson, J.; Watterson, J. 1988. Cucurbit Diseases: A Practical Guide for Seedsmen, Growers and Agricultural Advisors. Petoseed Co., Inc., Saticoy, CA. 48pp.  
Swiecki, T. J.; MacDonald, J. D. 1988. Histology of chrysanthemum roots exposed to salinity stress and Phytophthora cryptogea. Can. J. Bot. 66:280-288. Journal article
Bernhardt, E. A.; Duniway, J. M. 1986. Decay of pondweed and hydrilla hibernacula by fungi. J. Aquat. Plant Manage. 24:20-24. Journal article
Bernhardt, E. A.; Duniway, J. M. 1984. A new Papulaspora species from the pondweeds Potamogeton nodosus and P. crispus in California. Can J. Bot. 63:429-431. Journal article
Bernhardt, E. A.; Duniway, J. M. 1984. Root and stem rot of parrotfeather (Myriophyllum brasiliense) caused by Pythium carolinianum. Plant Disease 168:999-1003. Journal article
Bernhardt, E.A.; Grogan, R.G. 1982. Effect of water potential on the formation and indirect germination of sporangia of Phytophthora parasitica, P. capsici and P. cryptogea. Phytopathology 72:507-511. Journal article
MacDonald, J. D.; Swiecki, T. J.; Blaker, N. S.; Shapiro, J. D. 1984. Effects of salinity stress on the development of Phytophthora root rots. Calif. Agr. 38:23-24. Journal article
Swiecki, T. J.; Endress, A. G.; Taylor, O. C. 1982. Histological effects of aqueous acids and gaseous hydrogen chloride on bean leaves. Amer. J. Bot. 69:141-149. Journal article
Swiecki, T. J.; Endress, A. G.; Taylor, O. C. 1982. The role of surface wax in the susceptibility of plants to air pollution injury. Can. J. Bot. 60:316-319. Journal article
Swiecki, T. J.; Endress, A. G.; Taylor, O. C. 1978. Foliar and microscopic observations of bean leaves exposed to hydrogen chloride gas. Environ. Exper. Bot. 18:139-149. Journal article

Reports available from:
CDF-FRAP: California Dept. of Forestry & Fire Protection, Forest Resource Assessment Program, Sacramento
CDF-UCFP: California Dept. of Forestry & Fire Protection, Urban & Community Forestry Program, Riverside