Billy Ernst

Curriculum vitae

Personal information

Name: Billy Ernst-Elizalde

Birth date: June 12, 1967

Citizenship: Chilean

National ID: 9.468.322-K

Marital status: Married (Veronica Sanchez-Castillo)

Local address: 3801 Brooklyn Ave NE Unit M301, Seattle, WA 98105

Home Phone: +206-6328213

Current Position: PhD candidate at the School of Aquatic and Fisheries Sciences,

University of Washington.

Work Address: Fisheries Sciences Building , Room 310.

Mail: School of Fisheries WH-10, University of Washington

Seattle, WA 98195

Work Phone: +206-221-5457

Work Fax: +206-685-7471

e-mail: bernst@fish.washington.edu

Permanent address: Los Aguilera 253 –A Concepcion, Chile.

Phone: 56-41-229370

Academic studies

B.Sc. Marine Biology, University of Concepcion, 1989.

Marine Biologist, University of Concepcion, 1990.

M. Sc. Degree in Oceanography, University of Concepcion,

1996. Thesis entitled: "Dispersion de Pleuroncodes monodon (H. Milne Edwards, 1837) en ambientes homogeneos y estimacion de sus parametros poblacionales frente a punta Achira, Chile Central". Course work emphasized mathematics, biostatistics and biological oceanography. Population dynamics of squat lobster of central Chile.

PhD candidate in Fisheries, School of Fisheries, University of Washington 1996 - . Thesis entitled: "An investigation on length based models used in fisheries population dynamics". Course work emphasis has been in quantitative science, population dynamics, modeling and mathematical and applied statistics.

Participation in research projects (Include Technical Reports)

1.- Ecological recruitment of the squat lobster (Pleuroncodes monodon) off central Chile, 1993.

2.- Annual growth, sexual maturity, and fecundity of the shrimp Heterocarpus reedi:

analysis of a time series. 1994.

3. Laboratory of Bioessays for assessment and monitoring of toxic waste of industrial

effluents. 1994-1995

4.- Spatial distribution of population structure of the squat lobster around the Biobio river

canyon. 1995-1996.

5.- Biomass assessment of the squat lobster (Pleuroncodes monodon) stock off central Chile, 1996.

Report of the Undersecretary of Fisheries, Ministery of Economy, Valparaiso (Chile) 1997.

6.- Stock assessment and risk analysis of the squat lobster population off central Chile.

December 1997.

7.- Stock assessment of the skate (Raja flavirostris) population of the southern Chile region: The

implementations of length structured models. 1998. Report of the Undersecretary of Fisheries, Ministery of

Economy, Valparaiso (Chile) 1998.

8.- Stock assessment and fishery management of the skate (Raja flavirostris) population of the X and XI

regions (south Chile). 1999. Funded by the Undersecretary of Fisheries, Ministery of Economy, Valparaiso

(Chile) 1999.

9.- Stock assessment and fishery management of the south Pacific swordfish (Xiphias gladius) population off

the chilean coast. 1999. Funded by the Undersecretary of Fisheries, Ministery of Economy, Valparaiso

(Chile) 1999.

10. Manual, maintenance and programming of the Integrated Stock Assessment and population model:

COLERAINE, under the supervision of Dr. Ray Hilborn, School of Fisheries, University of Washington

(January 1999 - March 2001).

11. Stock Assessment for the New Zealand Orange Roughy in ORH 3B. Report by Ray Hilborn, Paul Starr

and Billy Ernst. Wellington , New Zealand (January 2000).

12. Operations manual for Fisheries Research Institute Field Camps in Alaska. 2^nd Edition. June 2000.

13. Stock assessment and fishery management of the skate (Raja flavirostris) population of the X and XI

regions (south Chile). 2000. Funded by the Undersecretary of Fisheries, Ministery of Economy, Valparaiso

(Chile) 2000.

Scientific publications

R. Roa, V.A. Gallardo, B. Ernst, M. Baltazar, J.I. Cañete, S. Enríquez-Briones. 1995. Nursery ground, age structure and abundance of juvenile squat lobster (Pleuroncodes monodon) on the continental shelf off central Chile. Marine Ecology Progress Series 116:47-54.

R. Roa, B. Ernst. 1996. Age structure, annual growth and variance of size-at-age of the shrimp Heterocarpus reedi. Marine Ecology Progress Series 137:59-70.

R. Roa, B. Ernst, F. Tapia.1999. Estimation of size at sexual maturity: evaluation of analytical and resampling procedures. Fishery Bulletin. 97(3): 570-580

Hilborn, R., Pascual, M., Gerber, L., Maunder, M., Wade, P, Ernst, B. 2000. The relationship between extinction risk, catastrophe frequency and number of populations. (submitted).

Presentations in Symposiums

• Symposium on Stock Assessment and Fisheries Management , School of Fisheries, University of

Washington, 1996. An overview of two Chilean crustacean fisheries (pandalid shrimp: Heterocarpus

reedi and squat lobster: Pleuroncodes monodon) and the estimation of natural mortality in the squat

lobster population.

• School of Fisheries 7^th Annual Graduate Student Symposium, October 1996. Using a unidirectional

diffusion model for studying the dispersion pattern of Pleuroncodes monodon (H. Milne Edwards,

1837) on the continental shelf off central Chile.

• School of Fisheries 8^th Annual Graduate Student Symposium, October 1997. Monte Carlo estimation of

size at sexual maturity.

• The Third William R. and Lenore Mote International Symposium in Fisheries Ecology: Targets, Thresholds, and the Burden of Proof. October 31-November 2, 2000 Sarasota, Florida. Bias and uncertainty of reference points derived from three different error structures.
• UW School of Aquatic & Fishery Sciences' 11th Annual Graduate Student Symposium* (GSS) was held on November 9, 2000. Assessing the performance of Jones's Length Cohort Analysis.
• 13th International Pectinid Workshop, Coquimbo (Chile), 18-24 April 2001. An integrated dynamic model for estimating growth and natural mortality of Zygochlamys patagonica. Juan L. Valero, Billy Ernst, Mario Lasta.

Scholarships and awards

1990 University of Concepcion award as best Marine Biology undergraduate student.

1991-1993 DAAD Scholarship (Deutscher Akademischer Austauschdienst) of the German Government for finanzing my Master studies at the University of Concepcion.

1996-1998 Scholarship from the National Scholarship Program of the Chilean Government (President of the Republic Scholarship) for finanzing my doctoral studies at the School of Fisheries, University of Washington.

1999. Galen and Helen Maxfield Scholarship. School of Fisheries, University of Washington.

RA/TA at the UW :

- FISH 456 Fundamentals of fish population dynamics and management. (Fall 1997)

- Research Assistant for a project of Dr. Ray Hilborn (since Winter 1999)

- FISH 458 Fisheries stock assessment. (Spring 1998, 1999 and 2000)

(put together and maintained the Webpage for the class, http://www.fish.washington.edu/classes/fish458/index.htm).

- Hired also in Spring of 1998 and 1999 to give a quarter of lectures on population dynamics and stock assessment to a group of 5 and 6 Mexican researchers at the School of Fisheries, University of Washington.

International courses

Course title: "Introduction to population dynamics and parameter estimation, with

applications for the conservation and management of marine mammals".

Instructors: Billy Ernst and Carlos Alvarez-Flores, School of Fisheries, University of Washington

Location: La Paz, Baja California Sur, Mexico

Dates: 4-6 May 2000

Languages

Speaks and writes fluent English, German, Spanish.

Programming skills

Excel, Word and PowerPoint. A variety of graphical software.

Fortran 90, ADMB, Visual Basic, C++, S-Plus

Other activities

Fine woodworking , wooden sailboat and kayak construction, coastal and open ocean cruising (sailboat) and dinghy racing (Laser, Thistle and Lightning).