An improved procedure for detection and enumeration of walrus signatures in airborne thermal imagery

International Journal of Applied Earth Observation and Geoinformation

Volumn 11, Issue 5, 2009, Pages 324-333

  Burn, Douglas M ^a   Udevitz, Mark S ^b   Speckman, Suzann G ^a   Benter, R Bradley ^a  

^a Marine Mammals Management   (United States)

^b U S GEOLOGICAL SURVEY   (United States)

Author keywords

Aerial survey; Airborne thermal imagery; Alaska; Bering Sea; Pacific walrus

Indexed keywords

AERIAL SURVEY; AIRBORNE SENSING; CLUSTER ANALYSIS; DETECTION METHOD; MARINE MAMMAL; PIXEL; POPULATION ESTIMATION; SATELLITE IMAGERY; SATELLITE SENSOR; SPATIAL RESOLUTION;

ALASKA; BERING SEA; EURASIA; NORTH AMERICA; PACIFIC OCEAN; RUSSIAN FEDERATION; UNITED STATES;

ANIMALIA; MAMMALIA; ODOBENIDAE; ODOBENUS ROSMARUS DIVERGENS;

EID: 67650744228     PISSN: 15698432     EISSN: 1872826X     Source Type: Journal    
DOI: 10.1016/j.jag.2009.05.004     Document Type: Article

References (21)

1. Anderberg M.R. Cluster Analysis for Applications (1973), Academic Press, New York
2. Barber D.G., Richard P.R., Hochheim R.P., and Orr J. Calibration of aerial thermal infrared imagery for walrus population assessment. Arctic 44 Suppl. 1 (1991) 58-65
3. Burn D.M., Webber M.A., and Udevitz M.S. Application of airborne thermal imagery to surveys of Pacific walrus. Wildlife Society Bulletin 34 (2006) 51-58
4. Burnham K.P., and Anderson D.R. Model Selection and Multimodel Inference (2002), New York, Springer
5. Fay F.H. Ecology and biology of the Pacific walrus, Odobenus rosmarus divergens Illiger. North American Fauna 74 (1982) 1-279
6. Fay F.H., and Burns J.J. Maximal feeding depth of walruses. Arctic 41 3 (1988) 239-240
7. Fay, F.H., Kelly, B.P., Gehnrich, J.L., Sease, J.L., Hoover, A.A., 1984. Modern populations, migrations, demography, trophics, and historical status of the Pacific walrus. Final Report R.U. #611. NOAA Outer Continental Shelf Environmental Assessment Program, Anchorage, AK.
8. Garlich-Miller, J., Jay, C.V., 2000. Proceedings of a Workshop Concerning Walrus Survey Methods. USFWS R7/MMM Technical Report 00-2. 92 pp.
9. Gilbert, J.R., Fedoseev, G.A., Seagars, D., Razlivalov, E., LaChugin, A., 1992. Aerial census of Pacific walrus, 1990. USFWS R7/MMM Technical Report 92-1. 33 pp.
10. Gilbert J.R. Review of previous Pacific walrus surveys to develop improved survey designs. In: Garner G.W., Amstrup S.C., Laake J.L., Manly B.F.J., McDonald L.L., and Robertson D.G. (Eds). Marine Mammal Survey and Assessment Methods (1999), A.A. Balkema, Rotterdam 75-84
11. Hills S., and Gilbert J.R. Detecting Pacific walrus population trends with aerial surveys-a review. Transactions of the Fifty-ninth North American Wildlife and Natural Resources Conference (1994) 201-210
12. Hosmer D.W., and Lemeshow S. Applied Logistic Regression. second ed. (2000), John Wiley and Sons, New York
13. Hunt Jr. G.L., and Stabeno P.J. Ecosystem responses to weather patterns in the Southeastern Bering Sea. Arctic Research of the United States 14 (2000) 17-24
14. Jay C.V., Heide-Jørgensen M.P., Fischbach A.S., Jensen M.V., Tessler D.F., and Jensen A.V. Comparison of remotely deployed satellite radio transmitters on walruses. Marine Mammal Science 22 (2006) 226-236
15. Maslanik J.A., Fowler C., Stroeve J., Drobot S., Zwally J., Yi D., and Emery W. A younger, thinner Arctic ice cover: increased potential for rapid, extensive sea-ice loss. Geophysical Research Letters 34 (2007) L24501
16. McCullagh P., and Nelder J.A. Generalized Linear Models. second ed. (1999), Chapman and Hall, Boca Raton
17. Ray C., and Fay F.H. Influence of climate on the distribution of walruses, Odobenus rosmarus (Linnaeus). II. Evidence from physiological characteristics. Zoologica 53 (1968) 19-32
18. Russ J.C. The Image Processing Handbook. fourth ed. (2002), CRC Press, Boca Raton
19. Speckman, S.G., Chernook, V., Burn, D.M., Udevitz, M.S., Kochnev, A., Vasilev, A., Benter, R.B., Lisovsky, A., 2009. Range-wide survey of Pacific walruses in 2006: estimated number of walruses on sea ice. Progress Report. U.S. Fish and Wildlife Service and U.S. Geological Survey, Anchorage, AK, 55 pp.
20. Udevitz M.S., Burn D.M., and Webber M.A. Estimation of walrus populations on sea ice with infrared imagery and aerial photography. Marine Mammal Science 24 (2008) 57-70
21. Wartzok, D., Ray, G.C., 1980. The hauling-out behavior of the Pacific walrus. U.S. Marine Mammal Commission Report MMC-75/15, Bethesda, MD.