Michael P Marchetti


Professional Overview: 

Dr. Michael P. Marchetti has degrees from Bucknell University (Biology & Chemistry 1990) and the University of California, Davis (M.S. Ecology 1994 and Ph.D. Ecology 1999).  Currently he is the Fletcher Jones Endowed Chair of Biology at St Marys College of California.  Prior to St. Marys, Dr. Marchetti was a full professor at California State University Chico for eleven years. 

Dr. Marchetti has over 28 years experience studying aquatic ecosystems, primarily in the Central Valley and Coast Range of California.  His research centers on stream ecosystems, conservation biology, invasion ecology, and food web ecology. 

Dr. Marchetti teaches courses in general ecology, aquatic ecology, biostatistics, conservation biology and ichthyology.  He has an active research lab and has worked in California, Oregon, Nevada, Mexico, Hawai’i and New Zealand.  He has authorship on more than 35 peer-reviewed publications in top ranking academic journals, and is a co-author on two college textbooks, 'Invasion Ecology' and ‘Protecting Life on Earth’.  He is also the primary author on an upcoming general ecology textbook titled: "Ecology: Accessible Quantative Reasoning for Ecological Science", to be published in 2020.

School of Science » Biology
School of Science » Environmental and Earth Science
SMC Email Address: 
Contact Information: 

Brousseau Hall - 106

Phone: 530 966 0647
Email: mpm9@stmarys-ca.edu

Curriculum Vitae: 


  • Ph. D. Graduate Group in Ecology, University of California, Davis, January 1999
  • MS Graduate Group in Ecology, University of California, Davis, June 1994
  • BA/BA Biology/Chemistry, Bucknell University, June 1990

Professional Experience

Teaching Experience:

  • Fletcher Jones Professor of Biology - St. Marys College of California (July 2011 - Present)
  • Professor - California State University, Chico (August 2000 - August 2011)

Courses Taught

Recently Taught:

  • Biology 34 Protecting Biodiversity
  • Biology 119 Research Design and Biostatistics
  • Biology 125 General Ecology
  • Biology 194 Biology of Fishes
  • Bology 113 Aquatic and Marine Ecology
  • Jan 45 Wild Mushrooms of the Bay Area
  • Jan 41 Photographig Nature
  • Seminar 1


Invited Speaker

  • Symposium on ‘Hawaii as a microcosm: mitigating the effects of invasive species on nature and society’ at North American Congress for Conservation Biology Annual Meeting. Madison WI July 2016.
  • Symposium on Biotic resistance at the The Ecological Society of America Annual Meeting. Sacramento CA. Aug 2014 "Biotic resistance in freshwater communities: what we know and where to go"
  • Lecture at Mills College Oakland CA. Oct. 2012, “The role of interspecific competition in the process of species invasion.
  • Advancing Ecological Literacy in Non-Majors, Undergraduate Courses. Marchetti, Michael (talk, speech or lecture) Ecological Society of America(August 2012)
  • Examining the paradox of invasive/endangered species conservation. Marchetti, Michael (talk, speech or lecture) Society for Conservation Biology (July 2012)
  • The ecological role of seasonal tributaries in California. Marchetti, Michael. Drexel University (May 2012)

Keynote Speaker

  • Impact of Invasive Species: Lessons from California's Fishes. Marchetti, Michael
    Canadian Aquatic Invasive Species Network
    (March 2010)

Plenary Session

  • Impact of Invasive Species: Lessons from California's Fishes. Marchetti, Michael
    Tahoe Basin Science Confrence
    (February 2010)

Other Talks

  • Joint Aquatic Sciences Meeting (ALSO, Soc. Freshwater Bio, Phycological Soc., SWS), Portland OR. May 2014. “Critical Role of seasonal tributaries for native aquatic biota in the Sacramento River”
  • Society for Conservation Biology – North American Congress. Oakland (July 2012) ‘The critical role of seasonal tributaries in California’
  • Society for Conservation Biology – North American Congress. Oakland (July 2012) ‘The impact of aquatic invaders on stream food webs in Kauai, Hawaii’
  • The Ecological Society of America Annual Meeting. Portland OR. (Aug 2012) ‘The critical role of seasonal tributaries in California’
  • 46th Annual American Fisheries Society – CALNEVA chapter meeting. March 2012. Ecological Role of Seasonal Tributaries in California. Author: M. P. Marchetti
  • 6th Biennial Bay-Delta Science Conference. September 2010.  Ecological Role of Seasonal Tributaries in California.  Contributing Authors: M. P. Marchetti, B. Walther, M. Limm, G. Benigno, H. Bowen.


  • Arndt, E., M. P. Marchetti and P. J. Schembri, 2018. Ecological impact of alien marine fishes – insights from freshwater systems based on a comparative review. Hydrobiologia
  • Howeth J.G., C. A. Gantz, P.l L. Angermeier, E. l A. Frimpong, M. Hoff, R. P. Keller, N. E. Mandrak, M. P. Marchetti, J. D. Olden, C. M. Romagosa, and D. M. Lodge, 2016. Predicting invaders from trade: climate match, trophic guild, and fecundity influence invasion success of non-native freshwater fish. Diversity & Distributions 22(2), pp.148-160.
  • M. P. Marchetti, T. Engstrom 2016 . The wattle-necked softshelled turtle (Palea steindachneri), an endangered, invasive species and a conservation paradox. Conservation Biology. 30(2), pp 434-437.
  • Bowen, H. and M. P. Marchetti. 2015. Ecomorphological plasticity of juvenile fall-run Chinook salmon (Oncorhynchus tshawytscha) in perennial and ephemeral streams.  Environmental Biology of Fish. 99(1), pp.67-78.
  • Hitt, N. P., L. K. Bonneau, K. V. Jayachandran, M. P. Marchetti. 2015. Freshwater Ecosystems and Biodiversity. Lessons in Conservation. 5: 5-16.
  • Layhee, M., M. P. Marchetti, S. Chandra, D. Pickard. 2015. Employing stable isotopes to investigate the impacts of invasive species on Hawaiian stream food webs.Pacific Conservation Biology. 20(3) Pg 252-270
  • Vander Zanden M. J., N. W. R. Lapointe, M.P. Marchetti. 2015. Non-Indigenous Fishes and their Role in Freshwater Fish Imperilment. In Olden J. ed. ‘Conservation of Freshwater Fishes’ Cambridge University Press
  • Ricciardi A., M. F. Hoopes, M. P. Marchetti, J. L. Lockwood. 2013. Progress toward understanding the ecological impacts of non-native species. Ecological Monographs. 83(3): 263–282
  • Lorig, Becky, Marchetti, Michael and Kopp, Gabriel. 2013. Spatial and Temporal Ecology of Fish Larvae in Seasonal and Perennial Tributaries of the Sacramento River, California, Journal of Freshwater Biology
  • Lockwood, Julie, Hoopes, Martha and Marchetti, Michael. 2013. Invasion Ecology, 2nd Edition, Wiley-Blackwell
  • Lockwood, J, Hoopes, M and Marchetti, M. 2011. Non-natives: pluses of invasion ecology, Nature, vol. 475, pg.36
  • Marchetti, M.P., Esteban , E., Smith, A., Richards, A., Slusark, J. and Pickard, D. 2011. Ecological assessment of a constant flow regime on the macroinvertebrate community in a large Mediterranean climate river, Journal of Freshwater Ecology, vol. 26, issue 3, pg.000
  • Marchetti, M.P. and Moyle, P. 2010. Protecting Life On Earth: An Introduction to the Science of Conservation, UC Press
  • Marr, S., Marchetti, M.P., Olden, J. and Garcia-Berthou, E. 2010. Freshwater fish introductions in Mediterranean-climate regions: are there commonalities in the conservation problem, Diversity and Distributions, vol. 16, issue 4, pg.606-619.
  • Marchetti, M.P. and Garr, M. 2010. Evaluating wetland restoration success using aquatic macroinvertebrate assemblages in the Sacramento Valley CA, Restoration Ecology, vol. 18, issue 4, pg.457-466
  • Limm, M. and Marchetti, M.P. 2009. Contrasting patterns of juvenile Chinook salmon (Oncorhynchus tshawytschaw) growth, diet, and prey densities in off-channel and main stem habitats on the Sacramento River, Environmental Biology of Fish, vol. 85, issue 2, pg.141-151
  • Lockwood, J.L., Hoopes, M.F. and Marchetti, M.P. 2007. Invasion Ecology, Blackwell Publishing
  • Marchetti, M.P., Lockwood, J.L. and Light, T.S. 2006. Effects of urbanization on Californias fish diversity: differentiation, homogenization and the influence of spatial scale., Biological Conservation, vol. 127, issue 3, pg.310-318
  • Moyle, P.B. and Marchetti, M.P. 2006. Predicting exotic fishes in freshwater systems: freshwater fishes in California as a model., BioScience, vol. 56, issue 6, pg.515-524
  • Light, T.S. and Marchetti, M.P. 2006. Invasions and habitat change as drivers of diversity loss among Californias freshwater fishes. , Conservation Biology, vol. 21, issue 2, pg.434-446
  • Marchetti, M.P., Moyle, P.B. and Levine, R. 2004. Invasive species profiling: exploring the characteristics of exotic fishes across invasion stages in California, Freshwater Biology, vol. 49, issue 5, pg.646-661
  • Marchetti, M.P., Light, T.S., Moyle, P.B. and Viers, J. 2004. Invasion and extinction in California fish assemblages: testing hypotheses using landscape patterns, Ecological Applications, vol. 14, issue 5, pg.1507-1525
  • Marchetti, M.P., Moyle, P.B. and Levine, R. 2004. Alien fishes in California watersheds: characteristics of successful and failed invaders, Ecological Applications, vol. 14, issue 2, pg.587-596
  • Marchetti, M.P. and Nevitt, G.A. 2002. Effects of habitat enrichment on brain structures in rainbow trout (Oncorhynchus mykiss), Environmental Biology of Fish, vol. 66, pg.9-14
  • Golet G.H, D.L. Brown, E.E. Crone, G.R. Geupel, S.E. Greco, K.D. Holl, K.A. Hoover, D.E. Jukkola, G.M. Kondolf, E.W. Larsen, F.K. Ligon, R.A. Luster, M.P. Marchetti, N..Nur, B.K. Orr, D.R. Peterson, M.E. Power, W.E. Rainey, M.D. Roberts, J.G. Silveira, S.L. Small, J.C. Vick, D.S. Wilson, and D.M. Wood. 2001. Using science to evaluate restoration efforts and ecosystem health on the Sacramento River Project, California. in PM Faber ed. Proceedings of the Riparian Habitat and Floodplains Conference.
  • Marchetti, M.P. and P.B. Moyle, 2001. Effects of flow regime and habitat structure on fish assemblages in a regulated California stream. Ecological Applications, 11(2):530-539.
  • Marchetti M.P., T. S. Light, J. Feliciano, T.W. Armstrong and Z. Hogan., P.B. Moyle. 2001.  Physical Homogenization and Biotic Homogenization in Aquatic Systems. Pages 259-278.  in Lockwood J.L. and M. L. McKinney. Editors. Biotic Homogenization: The Loss of Diversity through Invasion and Extinction. Kluwer Academic/Plenum Publishers. N.Y.
  • Marchetti, M.P. and P.B. Moyle, 2000. Spatial and temporal ecology of native and introduced larval fish in Lower Putah Creek (Yolo Co. CA). Environmental Biology of Fishes, 58(1):73-87.
  • Marchetti, M.P., 1999, An experimental study of competition between the native Sacramento perch (Archoplites interruptus) and introduced bluegill (Lepomis macrochirus), Biological Invasions 1:55-65.
  • Marchetti, M.P. 1999. Ecological Effects of Non-native Fish Species in Low Elevation Streams of the Central Valley, California. Ph.D. Dissertation. University of California, Davis. Davis California.
  • Moyle P.B., M.P. Marchetti, J. Baldridge, T.L. Taylor, 1998. Fish Health and Diversity: Justifying Instream Flows. Fisheries. 23(7):6-15.
  • Moyle P.B., and M. P. Marchetti, 1998. Applications of Indices of Biotic Integrity to California streams and watersheds. in Simpson T.P., editor. Assessing the sustainability and biological integrity of water resource quality using fish assemblages. CRC press. pp. 367-380.
  • Marchetti, M.P. and P.B. Moyle, 1995. Conflicting Values Complicate Stream Protection. California Agriculture, 49(6), 73-78.
  • Marchetti, M.P. 1994. Suspended Sediment Effects on the Aquatic Fauna of Humbug Creek. Masters Thesis. University of California, Davis. Davis California.

Active Research Projects

- Ecology and Life History Variation in the Califonria Newt (Taricha torosa) (2013- Present)

- Origin of Tetrodotoxin in California Newt food webs (collaboration with Dr G. Buccarelli UCLA)

- Ecohydrology and fisheries management of the Russian River Watershed (2012- Present)

- Writing a Textbook for Norton Publishing - "Ecology: Accessible Quantitative Resasoning for Ecological Science"



Scholarly Interests: 


  • Aquatic Ecology & Conservation
  • Fish Biology
  • Invasion Ecology
  • Stream Ecology
  • Herpetology - amphibians
  • Aquatic Macroinvertebrates
  • Conservation Biology
  • General Ecology pedagogy
Personal Interests: 
  • wildlife photography
  • bicycles
  • Mycology
  • fly fishing
  • lp records from the 60's and 70's
  • gourmet cooking