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John Takekawa

Supvy Research Wildlife Biologist

Contact Info


Short Biography

John Y. Takekawa is a research wildlife biologist with the USGS

Western Ecological Research Center, San Francisco Bay Estuary Field

Station in Vallejo, California. He received his BS in Wildlife

Science (1979) at the University of Washington, his MS in Wildlife

Resources (1982) at the University of Idaho, and his PhD in Animal

Ecology (1987) at Iowa State University. His research interests

include application of radio telemetry in studies of migration and

wintering ecology of waterbirds and wetland restoration in the San

Francisco Bay estuary. He is currently conducting international

fieldwork on avian influenza and movements of wild birds.



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Demers-Bluso, J.D., M.A. Colwell, J.Y. Takekawa, and J.T. Ackerman.  2008.  Space use by Forster’s Terns breeding in South San Francisco Bay. Waterbirds 31: 357-364.

Ackerman, J. T., J. Y. Takekawa, J. D. Bluso, J. L. Yee, and C. A. Eagles-Smith.  In press.  Gender identification of Caspian terns using external morphology and discriminant function analysis.  Wilson Journal of Ornithology.

Ackerman, J. T., J. Y. Takekawa, C. A. Eagles-Smith, and S. A. Iverson.  In press.  Mercury contamination and effects on survival of American avocet and black-necked stilt chicks in San Francisco Bay.  Ecotoxicology.

Deuel, B. E., and J. Y. Takekawa.  In press.  Tule greater white-fronted goose (Anser albifrons elgasi).  Pages 00-00 in W. D. Shuford and T. Gardali (eds.).  California bird species of special concern 2006: a ranked assessment of species, subspecies, and distinct populations of birds of immediate conservation concern in California.  Studies in Western Birds No. 1.

Iverson, S. A., J. Y. Takekawa, S. E. Schwarzbach, C. J. Cardona, W. M. Boyce, H. Ip, and N. Warnock.  In press.  Shorebirds and avian influenza: spatial, temporal, and species varation in prevalence in North America.  Waterbirds.

Takekawa, J. Y., S. W. De La Cruz, M. T. Wilson, E. C. Palm, J. L. Yee, D. R. Nysewander, J. R. Evenson, J. M. Eadie, D. Esler, W. S. Boyd, and D. H. Ward.  In Press.  Breeding synchrony, sympatry, and nesting areas of Pacific coast surf scoters (Melanitta perspicillata) in the northern boreal forest.  Studies in Avian Biology.

Takekawa, J. Y., A. K. Miles, D. H. Schoellhamer, D. C. Tsao-Melcer, S. Fregien, and N. D. Athearn.  In press.  Dietary flexibility in three representative waterbirds across salinity and depth gradients in salt ponds of San Francisco Bay.  Hydrobiologia.

Tsao-Melcer, D. T., A.K. Miles, J.Y. Takekawa, and I.Woo.  In press.  Potential effects of mercury on threatened California black rails. Archives of Environmental Contamination and Toxicology.

Adams, J., and J. Y. Takekawa.  2008.  At-sea distribution of radio-marked ashy storm petrel (Oceanodroma homochroa) captured on the California Channel Islands.  Marine Ornithology:36:9-17.

Ackerman, J.T., C.A. Eagles-Smith, J.Y. Takekawa, J.D. Bluso, and T.L . Adelsbach.  2008.  Mercury concentrations in blood and feathers of pre-breeding Forster’s terns in relation to space use of San Francisco Bay habitats. Environmental Toxicology and Chemistry 27:897-908.

Ackerman, J.T., C.A. Eagles-Smith, J.Y. Takekawa, and S.A. Iverson.  2008.  Survival of postfledging Forster’s terns in relation to mercury exposure in San Francisco Bay. Ecotoxicology 17:789-801.

Ackerman, J.T., J.Y. Takekawa, J.D. Bluso, J.L. Yee, and C.A. Eagles-Smith.  2008.  Gender identification of Caspian terns using external morphology and discriminant function analysis. Wilson Journal of Field Ornithology 120:378-383.

Ackerman, J.T., J.Y. Takekawa, C.A. Eagles-Smith, and S.A. Iverson.  2008.  Mercury contamination and effects on survival of American avocet and black-necked stilt chicks in San Francisco Bay. Ecotoxicology 17:103-116.

Casazza,M.L., C.T. Overton, J.Y. Takekawa, T. Rohmer, and K. Navarre.  2008.  Breeding behavior and dispersal of radio-marked California Clapper Rails. Western Birds. 39:101-106.

Deuel, B. E., and J. Y. Takekawa.  2008.  Tule greater white-fronted goose (Anser albifrons elgasi).  Pages 00-00 in W. D. Shuford and T. Gardali (eds.).  California bird species of special concern 2006: a ranked assessment of species, subspecies, and distinct populations of birds of immediate conservation concern in California.  Studies in Western Birds 1.

Eagles-Smith, C.A., J.T. Ackerman, T.L. Adelsbach, J.Y. Takekawa, A.K. Miles, and R.A. Keister.  2008.  Mercury correlations among six tissues for four waterbird species breeding in San Francisco Bay, California, USA. Environmental Toxicology and Chemistry 27:2136-2153.

Gaidet, N., G. Cattoli, S. Hammoumi, S. H. Newman, W. Hagemeijer, J. Y. Takekawa, J. Cappelle, T. Dodman, T. Joannis, P. Gil1, I. Monne, A. Fusaro, I. Capua, S. Manu, P. Micheloni, U. Ottosson, J. H. Mshelbwala, J. Lubroth, J. Domenech, F. Monicat.  2008.  Evidence of Infection by H5 Highly Pathogenic Avian Influenza Viruses in Healthy Wild Waterfowl.  Plos Pathogens 4(8): e1000127. doi:10.1371/journal.ppat.1000127

Gaidet, N., S. H. Newman, W. Hagemeijer, T. Dodman, J. Cappelle, S. Hammoumi, L. De Simone, and J. Y. Takekawa.  2008.  Wild duck’s migration links past HPAI H5N1 outbreak areas.  Emerging Infectious Diseases 14: 1164-1166.

Mejia, F., M.K. Saiki, and J.Y. Takekawa.  2008.  Relation between species assemblages of fishes and water quality in salt ponds and sloughs in south San Francisco Bay. Southwestern Naturalist 53:335-345.

Schwarzbach, S.E., S.B. Muzzafar, and J.Y. Takekawa.  2008.  Avian Influenza.  Journal of Wildlife Disease 44: 1056-1058.

Shellenbarger, G.G., N.D. Athearn, J.Y. Takekawa, and A.B. Boehm. 2008. Fecal indicator bacteria and Salmonella in ponds managed as bird habitat, San Francisco Bay, California, USA. Water Research 42:2921-2930.

Ackerman, J. T., C. A. Eagles-Smith, S. A. Demers, T. L. Adelsbach, J. Y. Takekawa, J. D. Bluso, A. K. Miles, N. Warnock, T. H. Suchanek, and S. E. Schwarzbach. 2007.  Mercury concentrations and space use of pre-breeding American Avocets and Black-necked Stilts in San Francisco Bay.  Science of the Total Environment 384: 452-466.

Ely, C. R., Bollinger, K. S., Densmore, R. V., Rothe, T. C., Petrula, J. Y. Takekawa, and Orthmeyer, D. L.  2007.  Reproductive Strategies of Northern Geese: Why Wait? Auk 124: 594-605.

Foxgrover, A. C., P. Dartnell, B. E. Jaffe, J. Y. Takekawa, and N. D. Athearn.  2007.  High-resolution bathymetry and topography of south San Francisco Bay, California: U. S. Geological Survey Scientific Investigations Map 2987, 1 sheet.  [http://pubs.usgs.gov/sim/2007/2987].

Hickey, C., N. Warnock, J. Y. Takekawa, and N. Athearn.  2007.  Space use by breeding and post-breeding black-necked stilts in the San Francisco Bay estuary.  Ardea 95:275-288.

Mason, J. W., G. J. McChesney, W. R. McIver, H. R. Carter, J. Y. Takekawa, R. T. Golightly, J. T. Ackerman, D. L. Orthmeyer, W. M. Perry, J. L. Yee, M. O. Pierson, and M. D. McCrary.  2007.  Distribution and Abundance of Seabirds off Southern California: A Twenty-Year Comparison. Studies in Avian Biology 33: 1-95.

Takekawa, J. Y., S. A. Iverson, M. A. Bishop, A. McShea, M. J. Lodes, and J. P. Dudley.  2007.  Chapter 29: Use of Rapid Analysis Technologies for the Field Identification and On-Site Confirmation of Avian Influenza.  Pages 519-529 in David Mello (ed.).  Biodetection Technologies 4th Edition.  Detection Knowledge Press.  Brookline, Massachusetts.

Williams, T.D., N. Warnock, J. Y. Takekawa, and M. A. Bishop. 2007.  Flyway scale variation in plasma triglyceride levels as an  index of refueling rate in spring migrating western sandpipers (Calidris mauri). The Auk 124: 886-897.

Bishop, M. A., N. Warnock, and J. Y. Takekawa.  2006.  Spring migration patterns in western sandpipers Calidris mauri.  Pages 545-550 in G. C. Boere, C. A. Galbraith, and D. A. Stroud.  Waterbirds around the world.  The Stationery Office.  Edinburgh, UK.

Bluso, J. D., J. T. Ackerman, J. Y. Takekawa, and J. L. Yee.  2006.  Using morphological measurements to sex Forster’s terns. Waterbirds 29: 511-516.

Brocher, T. M., M. D. Carr, D. L. Halsing, D. A. John, V. E. Langenheim, M. T. Mangan, M. C. Marvin-DiPasquale, J. Y. Takekawa, and C. R. Tiedeman.  2006.  USGS science in Menlo Park – a sciene strategy for the U. S. Geological Survey Menlo Park Science Center, 2005-2015.  U. S. Department of the Interior, U. S. Geological Survey Circular 1290.  Reston, Virginia.  42pp.

Ely, C. R., K. S. Bollinger, J. W. Hupp, D. V. Derksen, J. Terenzi, J. Y. Takekawa, D. L. Orthmeyer, T. C. Rothe, M. J. Petrula, and D. R. Yparraguirre.  2006.  Tranversing a Boreal Forest Landscape: Summer Movements of Tule Greater White-fronted Geese. Waterbirds 29: 43-55.

Ackerman, J., J. Y. Takekawa, D. L. Orthmeyer, J. P. Fleskes, J. L Yee, and K. L. Kruse. 2006. Spatial use by wintering greater white-fronted geese relative to a decade of habitat change in California's Central Valley. Journal of Wildlife Management 70(4):965-976.

Haukos, D. A., M. R. Miller, D. L. Orthmeyer, J. Y. Takekawa, J. P. Fleskes, M. L. Casazza, W. M. Perry, and J. A. Moon.  2006.  Spring migration of northern pintails from Texas and New Mexico, USA.  Waterbirds 29: 127-136.

Takekawa, J. Y., A. K. Miles, D. H. Schoellhamer, N. D. Athearn, C. Jannusch, M. K. Saiki, W. D. Duffy, and S. Kleinschmidt.  2006.  Trophic structure and avian communities across a salinity gradient in evaporation ponds of the San Francisco Bay estuary.  Hydrobiologia 567: 307-327.

Takekawa, J. Y., B. N. Sacks, I. Woo, M. L. Johnson, and G. D. Wylie.  2006.  Tidal salt marsh fragmentation and survival of San Pablo song sparrows (Melospiza melodia samuelis): assessing benefits of wetland restoration in San Francisco Bay.  Studies in Avian Biology 32: 238-246.

Takekawa, J. Y., I. Woo, H. Spautz, N. Nur, J. L. Grenier, K. Malamud-Roam, J. Cully Nordby, A. Cohen, F. Malamud-Roam, and S. E. Wainwright-De La Cruz.  2006.  Environmental threats to tidal marsh vertebrates of the San Francisco Bay estuary.  Studies in Avian Biology 32: 176-197.

Ackerman, J. T., J. Y. Takekawa, J. P. Fleskes, and D. L. Orthmeyer.  2005.  White-fronted geese respond well to Joint Venture's habitat improvements. Valley Ventures, Spring 2005: 10-13.

Ely, C.R., A.D. Fox, R.T. Alisauskas, A. Andreev, R. G. Bromley, A.G. Degtyarev, B. Ebbinge, E.N. Gurtovaya, R. Kerbes, A.V. Kondratyev, I. Kostin, A. V. Krechmar, K. E. Litvin, Y. Miyabayashi, J. H. Mooij, R. M. Oates, D. L. Orthmeyer, Y. Sabano, S. G. Simpson, D. V. Solovieva, M. A. Spindler, Y. V. Syroechkovsky, J. Y. Takekawa, and A. Walsh. 2005. Circumpolar variation in morphological characteristics of Greater White-fronted Geese Anser albifrons. Bird Study 52:104-119.

Hamilton, C.D., R.T. Golightly,  and J. Y. Takekawa.  2005.  Diving characteristics of Xantus’s Murrelet foraging near Anacapa Island, California. Marine Ornithology 33:155-159.

Miller, M. R., J. Y. Takekawa, J. P. Fleskes, D. L. Orthmeyer, M. L. Casazza, D. A. Haukos, and W. M. Perry.  2005.  Flight speeds of northern pintails during migration determined by satellite telemetry. Wilson Bulletin 117(4): 364-374.

Miller, M. R., J. Y. Takekawa, J. P. Fleskes, D. L. Orthmeyer, M. L. Casazza, and W. M. Perry.  2005.  Spring migration of northern pintails from California's Central Valley wintering area tracked by satellite telemetry: routes, timing, and destinations. Canadian Journal of Zoology 83(10): 1314-1332.

Takekawa, J. Y.  2005.  Finding the Needle in a Big Haystack–Locating Surf Scoter Nests in the Northern Boreal Forest. Sound Waves, August 2005 (75): 1-2.

Takekawa, J. Y.  2005.  Identification of the tule goose.  Central Valley Birding Club Bulletin 8: 4-7.

Ackerman, J. T., J Adams, J. Y. Takekawa, H. R. Carter, D. L. Whitworth, S. H. Newman, R. T. Golightly, and D. L. Orthmeyer.  2004.  Effects of radio transmitters on the reproductive performance of Cassin’s auklets. Wildlife Society Bulletin 32(4): 1229-1241.

Ackerman, J. T., J. Y. Takekawa, K. L. Kruse, D. L., Orthmeyer, J. L. Yee, C. R. Ely, D. H. Ward, K. S. Bollinger, and D. M. Mulcahy.  2004.  Using radiotelemetry to monitor cardiac response of free-living tule greater white-fronted geese (Anser albifrons elgasi) to human disturbance. The Wilson Bulletin 116: 146–151.

Ackerman, J. T., J. W. Mason, and J. Y. Takekawa.  2004.  Seabirds off Southern California–surveys reveal patterns in abundance and distribution. Sound Waves, November 2004, Vol. FY 2005, No. 67: 6–7.

Adams, J., J. Y. Takekawa, and H. R. Carter. 2004. Foraging distance and home range of Cassin’s Auklets nesting at two colonies in the California Channel Islands. The Condor 106: 618-637.

Adams, J., J. Y. Takekawa, and H. R. Carter.  2004.  Stable foraging areas and variable chick diet in Cassin’s auklets (Ptychoramphus aleuticus) off southern California.  Canadian Journal of Zoology 82: 1578-1595.

Bishop, M.A., N. Warnock, and J. Y. Takekawa. 2004. Differential spring migration by male and female Western Sandpipers at interior and coastal stopover sites. Ardea 92(2): 185-196.

Henkel, L. A., E. E. Burkett, and J. Y. Takekawa. 2004. At-sea activity and diving behavior of a radio-tagged marbled murrelet in central California. Waterbirds 27(1): 9-12.

Poulton, V.K., J. R. Lovvorn, and J. Y. Takekawa. 2004. Spatial and overwintering changes in clam populations of San Pablo Bay, a semiarid estuary with highly variable freshwater inflow. Estuarine, Coastal, and Shelf Science, 59: 459-473.

Warnock, N., J. Y. Takekawa, and M. A. Bishop. 2004. Migration and stopover strategies of individual Dunlin along the Pacific coast of North America. Can. J. Zool. 82: 1687-1697.

Javed, S., H. Higuchi, M. Nagendran, and J. Y. Takekawa.  2003.  Satellite telemetry and wildlife studies in India: advantages, options, and challenges.  Current Science, 25 November 2003, 8: 1439-1443.

Kruse, K. L., J. R. Lovvorn, J. Y. Takekawa, and J. Mackay.  2003.  Long-term productivity of canvasbacks in a snowpack-driven desert marsh.  Auk 120: 107-119.

Kruse, K. L., J. R. Lovvorn, J. Y. Takekawa, and J. MacKay.  2003.  Winter distribution and survival of a high-desert breeding population of canvasbacks.  Condor 105:791-804.

Warnock, N., and J. Y. Takekawa.  2003.  Use of radio telemetry in studies of shorebirds: past contributions and future directions.  Wader Study Group Bull. 100: 138-150.

Miller, M., J. Fleskes, D. Orthmeyer, J. Takekawa, M. Casazza, and B. Perry.  2002.  Pintails on the move.  California Waterfowl (Aug/Sep): 8, 10-13.

Miller, M. R., J. P. Fleskes, J. Y. Takekawa, D. L. Orthmeyer, M. L. Casazza, and W. M. Perry.  2002.  Satellite tracking of northern pintail spring migration from California, USA: the route to Chukotka, Russia.  Casarca 7: 229-233.

Nebel, S., D. B. Lank, P. D. O’Hara, G. Fernandez, B. Haase, F. Delgado, F. A. Estela, F. Mercier, L. J. Evans Ogden, B. Harrington, B. E. Kus, J. E. Lyons, B. Ortega, J. Y. Takekawa, N. Warnock, and S. E. Warnock.  2002.  Western sandpipers during the non-breeding season: spatial segregation on a hemispheric scale.  Auk 119: 922-928.

Poulton, V. K., J. R. Lovvorn, and J. Y. Takekawa.  2002.  Clam density and scaup feeding behavior in San Pablo Bay, California.  Condor 104: 518-527. 

Takekawa, J. Y.  2002.  Teamwork sheds light on shorebird-migration mysteries.  U. S. Geological Survey (http://soundwaves.usgs.gov).  Sound Waves 40: 3-4.

Takekawa, J. Y., S. E. Wainwright-De La Cruz, R. L. Hothem, and J. Yee.  2002.  Relating body condition to inorganic contaminant concentrations of diving ducks wintering in coastal California.  Arch. Environ. Contam. Toxicol. 42: 60-70. 

Takekawa, J. Y., N. Warnock, G. M. Martinelli, A. K. Miles, and D. C. Tsao.  2002.  Waterbird use of bayland wetlands in the San Francisco Bay estuary: movements of long-billed dowitchers during the winter.  Waterbirds 25: 93-105.

Warnock, N., G. W. Page, T. D. Ruhlen, N. Nur, J. Y. Takekawa, and J. T. Hanson.  2002. Management and conservation of San Francisco Bay salt ponds: effects of pond salinity, area, tide, and season on Pacific Flyway waterbirds.  Waterbirds 25: 79-92.

Winton, B. R., and J. Y. Takekawa.  2002.  Transportation impacts to wildlife on State Route 37 in northern San Pablo Bay, California.  Trans. Western Section of the Wildlife Society 37: 55-60.

Hui, C. A., J. Y. Takekawa, and S. E. Warnock.  2001.  Trace element burdens of two species of shorebirds at three sites in south San Francisco Bay.  Environ. Monitoring and Assessment 71: 107-121.

Steere, J. T., and N. Schaefer.  2001.  Restoring the estuary: implementation strategy of the San Francisco Bay Joint Venture.  San Francisco Bay Joint Venture.  Oakland, CA.  124pp.  (contributing author).

Takekawa, J. Y., C. T. Lu, and R. Pratt.  2001.  Avian communities in salt evaporation ponds and baylands of the northern San Francisco Bay estuary.  Hydrobiologica 466: 317-328.

Takekawa, J. Y., and D. L. Orthmeyer.  2001.  Application of radio telemetry in studies of cranes.  Pages 85-98 in  Johnson, R. L., H. Zou, and R. C. Stendell (eds.).  Cranes in east Asia: proceedings of the symposium held in Harbin, People’s Republic of China, June 9-18, 1998.  U. S. Geological Survey, Midcontinent Science Center, Fort Collins, CO.  Open File Rep. 01-403.  98pp.

Takekawa, J. Y.  2000.  Diving ducks need salt ponds.  Page 52 in A. R. Okamoto (ed.).  State of the estuary 2000 restoration primer: San Francisco Bay Sacramento-San Joaquin River Delta estuary.  U. S. EPA, San Francisco Estuary Project.  Oakland, CA.  76pp.

Carter, H. R., D. L. Whitworth, J. Y. Takekawa, T. W. Keeney, and P. R. Kelly.  2000.  At-sea threats to Xantus’ murrelets (Synthliborampus hypoleucus) in the Southern California Bight.  Pages 435-447 in D. R. Browne, K. L. Mitchell, and H. W. Chaney (eds.).  Proceedings of the fifth Channel Islands symposium.  U. S. Minerals Management Service.  Camarillo, CA.

Javed, S., J. Y. Takekawa, D. C. Douglas, A. R. Rahmani, Y. Kanai, M. Nagendran, B. C. Choudhury, and S. Sharma.  2000.  Tracking the spring migration of a bar-headed goose (Anser indicus) across the Himalaya with satellite telemetry.  Global Environ. Res. 2: 195-205.

Takekawa, J. Y., M. Kurechi, D. L. Orthmeyer, Y. Sabano, S. Uemura, W. M. Perry, and J. L. Yee.  2000.  A Pacific spring migration route and breeding range expansion for greater white-fronted geese wintering in Japan.  Global Environ. Res. 2: 155-168.

Takekawa, J. Y., and N. Warnock.  2000.  Long-billed dowitcher, Limnodromous scolopaceus.  In A. Poole and F. Gill (eds.).  Birds of North America.  No. 493.  The Birds of North America, Inc., Philadelphia. PA.

Takekawa, J. Y., R. I. Leyva-Espinosa, and E. E. Klaas.  2000.  Comparing radio and satellite telemetry to assess movements and habitat use of Arctic nesting geese in northern Mexico.  Pages 109-122 in F. A. Comin, J. A. Herrera, and J. Ramirez (eds.).  Limnology and aquatic birds: monitoring, modeling, and management.  Universidad Autonoma de Yucatan, Merida, Mexico.

Takekawa, J. Y., G. Page, J. M. Alexander, and D. Becker.  2000.  Shorebirds and waterfowl.  Pages 309-316 in M. Olufson (ed.).  Baylands ecosystem species and community profiles: life histories and environmental requirements of key plants, fish and wildlife.  San Francisco Bay Area Wetlands Ecosystem Goals Project.  San Francisco Bay Regional Water Quality Control Board, Oakland, CA.

Takekawa, J. Y., and S. Warnock.  2000.  The long-billed dowitcher.  Pages 301-305 in M. Olufson (ed.).  Baylands ecosystem species and community profiles: life histories and environmental requirements of key plants, fish and wildlife.  San Francisco Bay Area Wetlands Ecosystem Goals Project.  San Francisco Bay Regional Water Quality Control Board, Oakland, CA.

Takekawa, J. Y., and C. A. Marn.  2000.  The canvasback.  Pages 268-273 in M. Olufson (ed.). Baylands ecosystem species and community profiles: life histories and environmental requirements of key plants, fish and wildlife.  San Francisco Bay Area Wetlands Ecosystem Goals Project.  San Francisco Bay Regional Water Quality Control Board, Oakland, CA.

Whisson, D. A., and J. Y. Takekawa.  2000.  Testing the effectiveness of an aquatic hazing device on waterbirds in the San Francisco Bay estuary of California.  Waterbirds  23: 56-63.

Whitworth, D. L., J. Y. Takekawa, H. R. Carter, S. H. Newman, T. W. Keeney, and P. R. Kelly.  2000.  At-sea distribution of Xantus’ murrelets Synthliboramphus hypoleucus in the Southern California Bight, 1995-1997.  Ibis 142: 268-279.

Samuel, M. D., J. Y. Takekawa, V. V. Baranyuk, and D. L. Orthmeyer.  1999.  Effects of avian cholera on survival of lesser snow geese Anser caerulescens: an experimental approach.  Bird Study 46: 239-247.

Samuel, M. D., J. Y. Takekawa, G. Samelius, and D. R. Goldberg.  1999.  Avian cholera mortality in lesser snow geese nesting at Banks Island, Northwest Territories.  Wildl. Soc. Bull. 27:780-787.

Newman, S. H., J. Y. Takekawa, D. L. Whitworth, and E. E. Burkett.  1999.  Subcutaneous anchor attachment increases retention of radio transmitters on seabirds: Xantus’ and marbled murrelets.  J. Field Ornithol. 70: 520-534. 

Baranyuk, V. V., and J. Y. Takekawa.  1998.  Migration of the snow geese in Chukotka and St. Lawrence Island.  Casarca 4:169-187 (in Russian).

Hui, C. A., J. Y. Takekawa, V. V. Baranyuk, and K. V. Litvin.  1998.  Trace element concentrations in two subpopulations of lesser snow geese from Wrangel Island, Russia.  Arch. Environ. Contam. Toxicol. 34:197-203.

Kruse, K. L., and J. Y. Takekawa.  1998.  Tracking canvasbacks across the seasons: studying a migratory species from breeding grounds to wintering areas and back again.  Tideline. 18:1-3.

Kuznetsov, S. B, V. V. Baranyuk, and J. Y. Takekawa.  1998.  Genetic differentiation between wintering populations of lesser snow geese from Wrangel Island, Russia.  Auk. 115:1053-1057.

Ely, C. R., D. C. Douglas, A. C. Fowler, C. A. Babcock, D. V. Derksen, and J. Y. Takekawa.  1997.  Migration behavior of tundra swans from the Yukon-Kuskokwim Delta, Alaska.  Wilson Bull. 109:679-692.

Takekawa, J. Y., and C. R. Ely.  1997.  Tracking white-fronted geese from Bristol Bay, Alaska to Mexico.  California Waterfowl (October/November): 36-37.

Whitworth, D. L., J. Y. Takekawa, H. R. Carter, and W. R. McIver.  1997.  A night-lighting technique for at-sea capture of Xantus’ murrelets.  Colonial Waterbirds 20:525-531.

Ely, C. R., and J. Y. Takekawa.  1996.  Geographic variation in migratory behavior of greater white-fronted geese (Anser albifrons).  Auk 113:889-901.

Sabano, Y., S. Uemura, S. Iwabuchi, M. Kurechi, A. V. Andreev, A. V. Kondratyev, E. V. Syroechkovsky, K. E. Litvin, V. V. Baranyuk, J. Y. Takekawa, and D. L. Orthmeyer.  1996.  Restoration of lesser snow geese Anser caerulescens to East Asia, an international conservation project.  Gibier Faune Savage 13: 1181-1190.

Warnock, S. E., and J. Y. Takekawa.  1996.  Wintering site fidelity and movement patterns of western sandpipers Calidris mauri in the San Francisco Bay estuary.  Ibis 138:160-167.

Hohman, W. L., G. M. Haramis, D. G. Jorde, C. E. Korschgen, and J. Y. Takekawa.  1995.  Canvasback ducks.  Pages 40-43 in E. T. LaRoe, G. S. Farris, C. F. Puckett, P. D. Doren, and M. J. Mac (eds.).  Our living resources.  U. S. Dep. Int., Nat. Biol. Serv., Washington, D. C.

Kurechi, M. Y. Sabano, S. Iwabuchi, E. Syroechkovsky, V. V. Baranyuk, A. Andreev, A. Kondratyev, J. Y. Takekawa, and N. Mita.  1995.  Study on the restoration of snow geese to northeast Asia using a miniature satellite transmitter.  Telecommunication Advancement Foundation Res. 9:518-541 (in Japanese).

Orthmeyer, D. L., J. Y. Takekawa, C. R. Ely, M. L. Wege, and W. E. Newton.  1995.  Morphological differences in Pacific coast populations of greater white-fronted geese.  Condor 97:123-132.

Warnock, S. E., and J. Y. Takekawa.  1995.  Habitat preferences of wintering shorebirds in a temporally changing environment: western sandpipers in the San Francisco Bay estuary.  Auk 112:920-930.

Brault, S., S. Boyd, F. Cooke, and J. Y. Takekawa.  1994.  Population models as tools for research cooperation and management: the Wrangel Island snow geese.  Trans. N. Am. Wildl. Natur. Resour. Conf. 59:79-90.

Takekawa, J. Y., and H. R. Carter.  1994.  Conserving Beringia’s avian legacy.  Coast and Ocean (Autumn): 28-37.

Takekawa, J. Y., M. Kurechi, E. Syroechkovsky, V. V. Baranyuk, A. Andreev, D. L. Orthmeyer, Y. Sabano, and K. Litvin.  1994.  Restoration of lesser snow geese to East Asia: a North Pacific Rim conservation project.  Trans. N. Am. Wildl. Natur. Resour. Conf. 59:132-145.

Ely, C. R., J. Y. Takekawa, and M. L. Wege.  1993.  Distribution, abundance, and age ratios of Wrangel Island lesser snow geese Anser caerulescens during autumn migration on the Yukon-Kuskokwim Delta, Alaska.  Wildfowl 44:24-32.

Greenier, J. L., and J. Y. Takekawa.  1992.  Growth models and food conversion of cultured juvenile red abalone (Haliotis rufescens).  Pages 527-537 in S. A. Shepherd, M. J. Tegner, and S. A. Guzman del Proo (eds.).  Abalone of the world.  Blackwell Scientific Publ. Ltd. Oxford.

Frederick, R. B., W. R. Clark, and J. Y. Takekawa.  1992.  Application of a computer simulation model to migrating white-fronted geese in the Klamath Basin.  Pages 696-706 in D. R. McCollough and R. H. Barrett (eds.).  Wildlife 2001: populations.  Elsevier, NY.

Mensik, G. R., and J. Y. Takekawa.  1991.  White-fronts...on the way back!  California Waterfowl 17(2):36-38.

Miller, M. R., J. Y. Takekawa, and J. P. Fleskes.  1987.  Follow that bird!  California Waterfowl 13(2):5.

Takekawa, J. Y.  1987.  Energetics of canvasbacks staging on an upper Mississippi River pool during fall migration.  Ph.D. Dissertation.  Iowa State University.  Ames.  189pp.

Garton, E. O., L. A. Langelier, and J. Y. Takekawa.  1984.  Insects may develop immunity to pesticides--not to being eaten.  Focus on Renewable Resources 9:7.

Takekawa, J. Y., and E. O. Garton.  1984.  How much is an evening grosbeak worth?  J. Forestry 82(7):426-427.

Takekawa, J. Y.  1982.  The potential for biological control management of forest insects with avian predators.  Unpubl. Master’s Thesis.  University of Idaho.  Moscow.  88pp.

Takekawa, J. Y., E. O. Garton, and L. A. Langelier.  1982.  Biological control of forest insect outbreaks: the use of avian predators.  Trans. N. Am. Wild. Conf. 47:393-409.




                           

My Science Topics


Science Topic
Subtopic
Ecology and Environmentaquatic ecosystems
Ecology and Environmentbenthic ecosystems
Ecology and Environmentbiodiversity
Ecology and Environmentbiogeography
Ecology and Environmentecological processes
Ecology and Environmentecosystem diversity
Ecology and Environmentecosystems
Ecology and Environmentestuarine ecosystems
Ecology and Environmenthabitat alteration
Ecology and Environmenthabitats
Ecology and Environmentisland ecosystems
Ecology and Environmentwetlands



My USGS Science Strategy Areas

Understanding Ecosystems & Predicting Ecosystems Change

The Role of Environment and Wildlife in Human Health

Climate Variability & Change

Waterbirds and Wetland Ecology

Technical expertise in radio and satellite telemetry


Contact Information

John Takekawa
505 Azuar Drive
Vallejo, CA 94592
john_takekawa@usgs.gov
707-562-2000
707-562-3001 - Fax
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