Arnold J. Ammann, Co-Principal Investigator

Position/Affiliation: NMFS, Research Fisheries Biologist

Contact Info:


  • 2001: UC Santa Cruz M.S. Marine Ecology
  • 1994: UC Santa Barbara B.A. Aquatic Ecology

Research Interests: Population dynamics of marine fish. The ecology of juvenile salmonids and rockfish. The use of ultrasonic tags for determining movement and survival of salmonids.

Recent Publications & Presentations:

  • Perry, R.W., Skalski, J.R., Brandes, P.L., Sandstrom, P.T., Klimley, A.P., Ammann, A.J., and MacFarlane, R.B. (2010) Estimating survival and migration route probabilities of juvenile Chinook salmon in the Sacramento-San Joaquin River Delta. North American Journal of Fisheries Management 30:1, 142-156
  • Ammann, A.J., Michel, C.J., and MacFarlane, R.B. (2011) The effects of surgically implanted acoustic transmitters on laboratory growth, survival and tag retention in hatchery yearling Chinook salmon. Environmental Biology of Fishes DOI: 10.1007/s10641-011-9941-9
  • Chapman, E.D., Hearn, A.R., Michel, C.J., Ammann, A.J., Lindley, S.T., Thomas, M.J., Sandstrom, P.T., Singer, G.P., Peterson, M.L., MacFarlane, R.B., and Klimley, A.P. (2012) Diel movements of out-migrating Chinook salmon (Oncoryhnchus tshawytscha) and steelhead trout (Oncoryhnchus mykiss) smolts in the Sacramento/SanJoaquin watershed. Environmental Biology of Fishes DOI: 10.1007/s10641-012-0001-x
  • Michel, C.J., Ammann, A.J., Chapman, E.D., Sandstrom, P.T., Fish, H.E., Thomas, M.J., Singer, G.P., Lindley, S.T., Klimley, A.P., and MacFarlane, R.B. (2012) The effects of environmental factors on the migratory movement patterns of Sacramento River yearling Late-fall run Chinook salmon (Oncorhynchus tshawytscha) Environmental Biology of Fishes DOI: 10.1007/s10641-012-9990-8
  • Sandstrom, P.T., Ammann, A.J., Michel, C., Singer, G., Chapman, E.D., Lindley, S., MacFarlane, R.B., and Klimley, A.P. (2012) Growth, survival, and tag retention of steelhead trout (Oncorhynchus mykiss) and its application to survival estimates. Environmental Biology of Fishes DOI: 10.1007/s10641-012-0051-0
  • Ammann, A.J. 2004. SMURFs: standard monitoring units for the recruitment of temperate reef fishes. J. Exp. Mar. Bio. Ecol. 299:135-154.