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6 years 44 weeks

Researcher Information


In May 2000 I started as a Geographic Information System and Remote Sensing Analyst in the research lab of Prof. Block at Stanford University . Generally my job involves working with the huge amount of data obtained from biologging devices and remote sensing techniques . I assimilate, decode, analyze, integrate and deliver the data to show the great variety of patterns and relationships detected. One way of lightening up the spatiotemporal complexity of such datasets are spatial analysis techniques; by this means it is possible to synthesize and understand the patterns and relationships which would otherwise stay undetected (see Nature publ.). Ultimately the information is used to help solve scientific and managment related questions.

Currently I am a Life Sciences Research Assistant and have a organizational and management function on the operational side of research projects like TOPP.

In autumn 2004 I started a Phd. with Prof.Block on foraging habitat modeling of Atlantic Bluefin Tuna for the development of a predictive system that will allow the implementation of dynamic area/time closures based on remotely sensed ecosystem parameters. The advantages of such novel management approaches are the protection of a critical population size, the improvement of fisheries efforts as well as decreasing the longterm financial risks of such a fishery.

My particular interest is in Environmental Data Assimilation, Management Systems and Analysis Tools. My career objectives are contributing to the improvement of today’s eco-assessment services and therefore sustainable management of natural resources.

Contact Information:
HMS Stanford University
120 Oceanview Boulevard, Pacific Grove, CA 93950-3094

Life Science Reasearch Assistant
Selected Publications

Peer Reviewed

Walli, A., Costa,D. and Block, B.A. 2007. From a phytoplankton bloom to the presence of a foraging apex predator (Thunnus thynnus): considering spatiotemporal timelags in a pelagic ecosystem. In prep.

Walli, A., Costa,D. and Block, B.A. 2007. Foraging success of bluefin tuna (Thunnus orientalis, Tunnus tynnus) estimated from visceral warming. In prep.

Hoyt S. Peckham, Andreas Walli, David Maldonado Diaz, Victor de la Toba Miranda, Georgita Ruiz, Wallace J. Nichols, Larry B. Crowder. 2007. Bycatch of Pacific loggerheads in small-scale coastal fisheries can rival that in industrial fisheries. Submitted.

H. Dewar, T. Thys, J.O.Sullivan, C. Farwell, T. Tobayama, M. Soichi, Y. Kondo, Y. Okada, T. Nakatsubo, A.Walli, S.L. Teo, J. T. Streelman, A.L. Bass, C. Puchulutegui and S.A. Karl. 2007. Satellite tracking the world’s heaviest bony fish, Mola mola. In prep. for submission in Marine Biology.

Barbara A. Block, Shana Beemer, Andreas Walli, Heidi Dewar. 2007. Tracking the Movements and Environmental Preferences of Blue Marlin with Satellite Tags. In prep. for submission in Marine Biology.

Boustany, A.,Teo, S. L. H., Walli, A., Farwell,C. and Block, B. 2007. Movements of Atlantic bluefin tuna revealed with Satellite Tags off North Carolina. Marine Biology. In press.

Block, B.A., Teo, S.L.H., Walli, A. Boustany, A., Stokesbury, M., Farwell, C.J., Weng, K., Dewar, H., and Williams, T. Electronic Tagging and Population Structure of Atlantic Bluefin Tuna. Nature 434: 1121-1127.

Steve Teo, Susanna Blackwell, Andreas Walli, Andre Boustany, James Ganong and Barbara Block. 2003. Using Sea Surface Temperature to improve latitudinal estimates from electronic tags. Marine Ecological Progress Series. 283:81-98.

Barbara A. Block, Heidi Dewar, Susanna B. Blackwell, Tom Williams, Eric D. Prince, Charles J.Farwell, Andre Boustany, Steven L.H. Teo, Andrew Seitz, Andreas Walli, and Douglas Fudge. 2001. ElectronicTags Reveal Migratory Movement, Depth Preferences and Thermal Biology of Atlantic Bluefin Tuna. Science 2001 293: 1310-1314.

Non-Peer Reviewed

Walli, A., Costa, D.P. and Block, B.A. 2007. Estimating Feeding from Visceral Warming in Pacific Bluefin Tuna: Lab and Field Measurements. 58th International Tuna Conference. Lake Arrowhead, California. South West Fisheries Center, NMFS, USA.

Walli, A., Block, B.A., Teo, S.L.H., Boustany, A., Farwell and C., Williams, T. 2007. Electronic Tagging of Bluefin Tuna: Providing for Improved Fisheries Management Approaches. Keynote Talk: GLOBEC/CLIOTOP Working Group 5, Feb.12th Santa Barbara, California, USA.

Costa, D.P., Simmons,S., Robinson,P.,Tremblay,Y., Weber,R.,Walli,A. 2007. Hydrographic Description and Habitat Use of Eddies by Northern Elephant Seals in the North East Pacific. ASLO Aquatic Sciences Meeting. Feb4th, Santa Fe, New Mexico, USA.

Teo, S.L.H, Boustany, A., Walli, A., and Block, B.A. 2006. Electronic Tags Reveal the Biophysical Interactions of Breeding Atlantic Bluefin Tuna. 13th Ocean Sciences Meeting, Honolulu, Hawaii.

Walli, A., Block, B., Teo, S. L. H., Boustany, A., Weng, K. C., Dewar, H., Farwell, C. and Williams,T.2005. Movement patterns and population structure of Atlantic bluefin tuna (Thunnus thynnus) as revealed by electronic tags. 56th International Tuna Conference. Lake Arrowhead, California. South West Fisheries Center, NMFS, USA.

Walli, A., Block, B. A., Teo, S. L.H., Boustany, A., Dewar, H., Farwell, C., Williams, T.,Prince, E.. 2004. Electronic tagging of adolescent and mature west Atlantic bluefin tuna (Thunnus thynnus).ASLO/TOS Ocean Research Conference, Honolulu, Hawaii. February, 2004.

Barbara A. Block, Andre Boustany, Steve Teo, Andreas Walli, Charles J. Farwell, Tom Williams, Eric D. Prince, Mike Stokesbury A. Seitz and K. Weng .2002. Distribution of Western Tagged Atlantic Bluefin Tuna Determined from Implantable Archival and Pop-Up Satellite Archival Tags. SCRS/02/094, ICCAT.

Farwell, C. J., Boustany, A., Weng, K., Walli, A., Sippel,T. Teo, S., Block, B. A. 2001. Pop-Up Satellite Archival Tagging of Pacific Bluefin Tuna. 52nd Annual Tuna Conference. Lake Arrowhead, CA. May 2001. South West Fisheries Center, NMFS, USA.

Walli,A. 2001. Food for the next Generation. Austrian Broadcasting Foundation (ORF).

Hopkins Marine Station, Stanford University