Tahoe yellowcress is a low growing, yellow flowered member of the mustard family that grows on the beaches of Lake Tahoe in Nevada and California, and nowhere else in the world.  The species competes with fluctuating lake levels and intensive recreational beach use for the limited habitat in which it survives.  Since the late 1970s, Tahoe yellowcress has been the focus of urgent research and conservation management efforts.  The species is listed as endangered by both California and Nevada, but so far has avoided the Federal endangered species list through a broad, ongoing, cooperative multi-agency conservation strategy.

As a service to the public, and to the many groups and individuals who work with Tahoe yellowcress, we maintain the following electronic collection of relevant documents. Most are served in PDF format, and most computers already have the necessary software to read and print such documents. If yours does not, you will need to download the latest free Adobe® Acrobat® Reader plug-in first. We continue to add to this collection as documents come to our attention and are made available. Please contact the Webmaster if you know of and/or can provide any missing documents (shown below as MISSING). Recent additions are flagged as .

NOTICE: Due to conversion from old electronic copies, some of the documents linked herein may display different pagination and/or formatting than the original printed versions, and may also be missing figures or tables.

GENERAL REFERENCES

California State Lands Commission. 1998. Tahoe yellow cress draft biological assessment. Sacramento, CA. 45 pages plus appendices. Online: MISSING.

Knapp, C. M. 1979. Rorippa subumbellata Roll. Its Status on Historical and Potentially New Sites. USDA Forest Service, Lake Tahoe Basin Management Unit, South Lake Tahoe, CA. Online: http://heritage.nv.gov/reports/rosu_knapp_1979.pdf, accessed 31 October 2007.

Knapp, C. M. 1980. Rorippa subumbellata Rollins: Status in the Lake Tahoe Basin. USDA Forest Service, Lake Tahoe Basin Management Unit, South Lake Tahoe, CA. Online: MISSING.

Pavlik, B., Murphy, D., and Tahoe Yellow Cress Technical Advisory Group. 2002. Conservation Strategy for Tahoe Yellow Cress (Rorippa subumbellata). Tahoe Regional Planning Agency, Lake Tahoe, NV. Online: http://heritage.nv.gov/reports/rosu_CS.pdf, accessed 9 May 2005.

ANNUAL REPORTS (chronologic)

Stanton, A. E. and B. M. Pavlik. 2007. Implementation of the Conservation Strategy for Tahoe Yellow Cress (Rorippa subumbellata). 2006 Annual Report. BMP Ecosciences, San Francisco, CA, prepared for Tahoe Yellow Cress Adaptive Management Working Group and Executive Committee, January 2007. Online: http://heritage.nv.gov/reports/rosu_annrep_2006.pdf plus Appendix C, accessed 9 July 2007.

Stanton, A. E. and B. M. Pavlik. 2006. Implementation of the Conservation Strategy for Tahoe Yellow Cress (Rorippa subumbellata). 2005 Annual Report. BMP Ecosciences, San Francisco, CA, prepared for Tahoe Yellow Cress Adaptive Management Working Group and Executive Committee, Stateline, NV, April 2006. Online: http://heritage.nv.gov/reports/rosu_annrep_2005.pdf, accessed 7 July 2006.

Stanton, A. E. and B. M. Pavlik. 2005. Tahoe Yellow Cress (Rorippa subumbellata) 2004 Annual Report. BMP Ecosciences, San Francisco, CA, prepared for Technical Advisory Group and Executive Committee, October 2005. Online: http://heritage.nv.gov/reports/rosu_annrep_2004.pdf plus Appendix C, accessed 9 July 2007.

U.S. Fish and Wildlife Service. 2004. Tahoe Yellow Cress (Rorippa subumbellata) Final 2003 Annual Report. Reno, NV, prepared for Tahoe yellowcress Technical Advisory Group and Executive Committee, June 2004. Online: http://heritage.nv.gov/reports/rosu_annrep_2003.pdf plus Appendix A, Appendix C, and Appendix E, accessed 12 July 2006.

California State Lands Commission. 2003. Tahoe Yellow Cress (Rorippa subumbellata) 2002 Annual Survey Report. Sacramento, CA, prepared for Technical Advisory Group and Executive Committee, Zephyr Cove, NV, January 2003. Online: http://heritage.nv.gov/reports/rosu_annrep_2002.pdf, accessed 7 July 2006.

California State Lands Commission. 2002. Tahoe Yellow Cress (Rorippa subumbellata) 2001 Annual Survey Report. Sacramento, CA, prepared for Technical Advisory Group and Executive Committee, Zephyr Cove, NV, October 2002. Online: http://heritage.nv.gov/reports/rosu_annrep_2001.pdf, accessed 7 July 2006.

RESEARCH (alphabetic)

California State Lands Commission. 1999. Synopsis of 1999 Tahoe yellow cress annual surveys. Sacramento, CA. Online: MISSING.

DeWoody, J.and V. D. Hipkins. 2004. Final report: Expanded evaluation of genetic diversity in Tahoe yellow cress (Rorippa subumbellata), revised 14 March 2004. U.S.D.A. Forest Service, National Forest Genetic Electrophoresis Laboratory, Service Agreement 14320-2-H401, Placerville, CA. Online: http://heritage.nv.gov/reports/rosu_gen_2004.pdf, accessed 15 July 2005.

DeWoody, J.and V. D. Hipkins. 2006. Genetic monitoring of Rorippa subumbellata (Tahoe yellow cress):
Analyzing northeast populations and monitoring south shore populations. U.S.D.A. Forest Service, National Forest Genetic Electrophoresis Laboratory project 194, Service Agreements 0519-05-607, 0519-06-601, Placerville, CA. Online: http://heritage.nv.gov/reports/rosu_gen_2006.pdf, accessed 9 July 2007.

Ferreira, J. E. 1987. The population status and phenological characteristics of Rorippa subumbellata Roll. at Lake Tahoe, California and Nevada. M.A. Thesis, California State University, Sacramento. Online: MISSING.

Ingolia, M. 2006. Germination ecology of Rorippa subumbellata (Tahoe yellow cress), an endangered, endemic species of Lake Tahoe. M.S. Thesis, University of California, Davis. Online: MISSING (pending permission).

Pavlik, B. M., A. E. Stanton, and J. Childs. 2002. Implementation of the Conservation Strategy for Tahoe Yellow Cress (Rorippa subumbellata) I. Seed Collection, Assessment of Reproductive Output, and Propagation for Reintroduction. BMP Ecosciences, San Francisco, CA, prepared for the Tahoe Yellow Cress Technical Advisory Group and the Tahoe Regional Planning Agency, Zephyr Cove, NV, December 2002. Online: http://heritage.nv.gov/reports/rosu_impl01_2002.pdf, accessed 3 July 2007.

Pavlik, B.M. and A.N. O'Leary. 2002. Implementation of the Conservation Strategy for Tahoe Yellow Cress (Rorippa subumbellata) II. Key Management Questions as a Framework for Research. BMP Ecosciences, San Francisco, CA. Online: http://heritage.nv.gov/reports/rosu_impl02_2002.pdf, accessed 3 July 2007.

Pavlik, B., and A. Stanton. 2004. Implementation of the Conservation Strategy for Tahoe Yellow Cress (Rorippa subumbellata) III. Pilot Project to Support Reintroduction Experiments. BMP Ecosciences, San Francisco, CA, prepared for the Tahoe Yellow Cress Technical Advisory Group and the Tahoe Regional Planning Agency, Stateline, NV. Online: http://heritage.nv.gov/reports/rosu_impl03_2004.pdf, accessed 3 July 2007.

Pavlik, B., and A. Stanton. 2005. Implementation of the Conservation Strategy for Tahoe Yellow Cress (Rorippa subumbellata) IV. Experimental Reintroductions, Year One. BMP Ecosciences, San Francisco, CA, prepared for the Tahoe Yellow Cress Technical Advisory Group and the Tahoe Regional Planning Agency, Stateline, NV. Online: http://heritage.nv.gov/reports/rosu_impl04_2005.pdf, accessed 3 July 2007.

Pavlik, B. M. and A. E. Stanton. 2006. Implementation of the Conservation Strategy for Tahoe Yellow Cress (Rorippa subumbellata) V. Experimental Reintroductions, Year Two. BMP Ecosciences, San Francisco, CA, prepared for the Tahoe Yellow Cress Adaptive Management Working Group, c/o Tahoe Regional Planning Agency, Stateline, NV, July 2006. Online: http://heritage.nv.gov/reports/rosu_impl05_2006.pdf, accessed 30 January 2007.

Saich, R. C. and V. D. Hipkins. 2000. Evaluation of genetic diversity in Tahoe yellow cress (Rorippa subumbellata). National Forest Genetic Electrophoresis Laboratory, USDA Forest Service, Camino, CA. Online: http://heritage.nv.gov/reports/rosu_gen_2000.pdf, accessed 6 August 2007.

SITE-SPECIFIC PLANS

SURVEY METHODS (chronologic)

2006 NNHP supplemental guidelines for TYC survey data. PDF version.

2005 field survey form. PDF and Word versions.

2005 field survey form for ranked sites. PDF and Word versions.

2004 field survey form. PDF and Word versions.

2004 field survey protocols. PDF and Word versions.

2003 field survey form. PDF and Word versions.

CURRENT DRAFTS