Ecology of California Tiger Salamander for CDFW

Ecology of California Tiger Salamander for CDFW program image

A rare opportunity for CDFW employees to learn about the California Tiger Salamander


Monday, May 23, 2016
8:00 AM - 3:30 PM
Rush Ranch
Suisun City
Please bring your own lunch



Instructor Information

Dr. Peter Trenham
Independent Consultant


Grey Hayes



See also: California Tiger Salamander, Habitat Restoration

Overview: This will be a unique opportunity for California Department of Fish and Wildlife staff to participate in a workshop on the ecology and conservation of the California tiger salamander.  The workshop will consist of a 7 hour classroom session and a choice of one of two field sessions.  We will send out an email to those registered which field session they are assigned to by May 10.


Workshop Objectives: The workshop is designed to provide participants a working understanding of the complex biology of California tiger salamanders including discussion of published research. Participants will gain an understanding for how to identify, survey, conserve and manage habitat for the species. The information conveyed will be useful in large-scale and local conservation planning efforts.


Topics: Specific topics include:  the geographic distribution of California tiger salamanders and hybrid populations; upland and aquatic habitats and their management; species movements; population and community ecology; survey methods; methods for assessing potential project impacts, and; approaches for avoidance and minimization. Participants will receive skills-based field training in species identification, sampling techniques, and habitat requirements of the California tiger salamander.


Workshop Format:


May 23 classroom session (8:00am – 3:30pm): Overview of biology and management of the California tiger salamander.

May 23 or May 24 field sessions (site TBD): Your registration includes enrollment in one of the two field training sessions on either May 23 (4:30pm – 8:00pm) or May 24 (9:00am – 1:00pm).  In order to reduce the teacher:student ratio, we are limiting these sessions to 12 participants each.  We will attempt to accommodate your scheduling preferences but cannot guarantee registration in your preferred choice. 


Please Note:


Elkhorn Slough is subsidizing the cost of this workshop to make the event free to Department employees only.  If you sign up, please show up.  Otherwise, you will be taking the space of another Department employee, wasting funding, materials, etc.  Those who do not show up or notify us well in advance of their absence may not be offered priority enrollment at future such events.     


Due to cost constraints, we will not be serving refreshments or lunch for this event:  please bring your own lunch, coffee, water, etc.

Documents and Publications

Contact List
We encourage participants to download the contact list to assist with arranging a rideshare or to get in contact with someone you met at the workshop. Those interested in sharing a ride to the event are marked on the contact list.

Presentation: California tiger salamander workshop
PDF, 18.2MB
Chris Searcy and Pete Trenham
Elkhorn Slough Coastal Training Program
May 2023
Read Me: Important Preparation Guidelines for CTS Field Practica
Dan Brumbaugh
Elkhorn Slough Coastal Training Program
Supplemental Materials, Including Bibliography: California Tiger Salamander Workshop
PDF, 220KB
Chris Searcy And Pete Trenham
Elkhorn Slough Coastal Training Program
May 2023
Amphibian Upland Habitat Use & Its Consequences for Population Viability
PDF, 197KB
Peter C. Trenham & H. Bradley Shaffer
Ecological Applications 15(4):1158-1168
Calculating Biologically Accurate Mitigation Credits: Insights from the California Tiger Salamander
PDF, 415KB
Christopher Searcy and Bradley Shaffer
Conservation Biology 22(4):997-1005
Delayed life history effects, multilevel selection, and evolutionary trade-offs in the California tiger salamander
PDF, 2.4MB
Christopher A. Searcy, Levi N. Gray, Peter C. Trenham, and H. Bradley Shaffer
Ecology, 95(1):68-77
Distribution of Migrating Adults Related to the Location of Remnant Grassland around an Urban California Tiger Salamander (Ambystoma californiense) Breeding Pool
PDF, 341KB
Peter C. Trenham and David G. Cook
Urban Herpetology, Herpetological Conservation, Mitchell, J.C., and R.E. Jung Brown (Eds.). Society for the Study of Amphibians and Reptiles, Salt Lake City, Utah, USA.
Effective population size is strongly correlated with breeding pond size in the endangered California tiger salamander, Ambystoma californiense
PDF, 500KB
Ian J. Wang, Jarrett R. Johnson, Benjamin B. Johnson, H. Bradley Shaffer
Conserv Genet 12:911-920
Effects of tail-clipping on survivorship and growth of larval salamanders
PDF, 414KB
Rebecca L. Polich, Christopher A. Searcy, and H. Bradley Shaffer
The Journal of Wildlife Management 77(7):1420-1425
Life History and Demographic Variation in the California Tiger Salamander
PDF, 101KB
Peter C. Trenham, H. Bradley Shaffer, Walter D. Koenig, and Mark R. Stromberg
Copeia 2:365-377
Microhabitat use and migration distance of an endangered grassland amphibian
PDF, 475KB
Christopher A. Searcy, Emilio Gabbai-Saldate, and H. Bradley Shaffer
Biological Conservation 158:80-87
Movement Patterns and Migration Distances in an Upland Population of California Tiger Salamander (Ambystoma californiense)
PDF, 1.1MB
Susan G. Orloff
Herpetological Conservation and Biology 6(2):266-276
Retention of low-fitness genotypes over six decades of admixture between native and introduced tiger salamanders
PDF, 397KB
Jarrett R. Johnson, Benjamin M. Fitzpatrick, and H Bradley Shaffer
BMC Evolutionary Biology 10:147
Short pond hydroperiod decreases fitness of nonnative hybrid salamanders in California
PDF, 619KB
J. R. Johnson, M. E. Ryan, S. J. Micheletti, and H. B. Shaffer
Animal Conservation 16:556-565
Spatially Autocorrelated Demography and Interpond Dispersal In The Salamander Ambystoma californiense
PDF, 339KB
Peter C. Trenham, Walter D. Koenig and H. Bradley Shaffer
Ecology, 82(12):3519-3530
Sympatry in California tiger salamander and California red-legged frog breeding habitat within their overlapping range
PDF, 145KB
Jeff A. Alvarez, Mary A. Shea, Jeffery T. Wilcox, Mark A. Allaback, Sarah M. Foster, Gretchen E. Padgett-Flohr, and Jennifer L. Haire
California Fish and Game, 99(1):42-48
Terrestrial habitat use by adult California tiger salamanders
PDF, 666KB
Peter C. Trenham
Journal of Herpetology, 35(2):343-346
The effectiveness of pond-breeding salamanders as agents of larval mosquito control
PDF, 150KB
Robert Brodman Ryan Dorton
Journal of Freshwater Ecology 21(3):467-474
The molecular phylogenetics of endangerment: cryptic variation and historical phylogeography of the California tiger salamander, Ambystoma californiense
PDF, 317KB
H. Bradley Shaffer, Gregory B. Pauly, Jeffrey C. Oliver, and Peter C. Trenham
Molecular Ecology 13:3033-3049
The origin of tiger salamander (Ambystoma tigrinum) populations in California, Oregon, and Nevada: introductions or relicts?
PDF, 544KB
Jarrett R. Johnson, Robert C. Thomson, Steven J. Micheletti, and H. Bradley Shaffer
Conserv Genet 12:355-370
The polytypic species revisited: genetic differentiation and molecular phylogenetics of the tiger salamander Ambystoma tigrinum (Amphibia: Caudata) complex
PDF, 2.8MB
H. Bradley Shaffer; Mark L. McKnight
Evolution, 50(1):417-433
Feb. 1996
Ambystoma californiense Gray, 1853, California tiger salamander
Shaffer, H. B., and P. C. Trenham
M. Lannoo, editor. Amphibian Declines - The Conservation Status of United States Species. University of California Press, Berkeley


California Herps

Questions and Answers

Submit a question on this subject and we'll provide an answer. coastaltraining@elkhornslough.org