First estimates of vaquita abundance

Marine Mammal Science

Volumn 13, Issue 1, 1997, Pages 44-55

  Barlow, Jay ^a   Gerrodette, Tim ^b   Silber, Greg ^b  

^a SOUTHWEST FISHERIES SCIENCE CENTER   (United States)

^b Marine Mammal Commission   (United States)

Author keywords

abundance; endangered species; Gulf of California harbor porpoise; line transect survey; Mexico; Phocoena sinus; population; trends; vaquita

Indexed keywords

ABUNDANCE; AERIAL SURVEY; ENDANGERED MAMMAL; ENDANGERED SPECIES; FIRST ESTIMATES; MAMMALS; POPULATION ESTIMATION; POPULATION NUMBER; PORPOISES; SHIP SURVEY; TRENDS; VAQUITA;

MEXICO;

PHOCOENA SINUS;

EID: 0030621053     PISSN: 08240469     EISSN: None     Source Type: Journal    
DOI: 10.1111/j.1748-7692.1997.tb00611.x     Document Type: Article

References (32)

1. AKAIKE, H. 1973. Information theory and an extension of the maximum likelihood principle. Pages 267-281 in B. N. Petran and F. Csàaki, eds. International Symposium on Information Theory, 2nd Edition. Akadèemiai Kiadi, Budapest, Hungary.
2. BARLOW, J. 1986. Factors affecting the recovery of Phocoena sinus, the vaquita or Gulf of California harbor porpoise. Southwest Fisheries Center Administrative Report LJ-86-37. [Available from Southwest Fisheries Science Center, P. O. Box 271, La Jolla, CA 92038.] 19 pp.
3. BARLOW, J. 1988. Harbor porpoise (Phocoena phocoena) abundance estimation in California, Oregon and Washington: I. Ship surveys. Fishery Bulletin 86:417-432.
4. BARLOW, J., AND K. A. FORNEY. 1994. An assessment of the 1994 status of harbor porpoise in California. NOAA Technical Memorandum NOAA-TM-NMFS-SWFSC-205. 17 pp.
5. BARLOW, J., C. OLIVER, T. D. JACKSON AND B. L. TAYLOR. 1988. Harbor porpoise (Phocoena phocoena) abundance estimation in California, Oregon and Washington: II. Aerial surveys. Fishery Bulletin, U.S. 86:433-444.
6. BARLOW, J., L. FLEISCHER, K. A. FORNEY AND O. MARAVILLA-CHAVEZ. 1993. An experimental aerial survey for vaquita (Phocoena sinus) in the northern Gulf of California, Mexico. Marine Mammal Science 9:89-94.
7. BJØRGE, A., AND G. P. DONOVAN, EDS. 1995. Biology of the phocoenids. Report of the International Whaling Commission (Special Issue 16). 552 pp.
8. BROWNELL, R. L., JR. 1986. Distribution of the vaquita, Phocoena sinus, in Mexican waters. Marine Mammal Science 2:299-305.
9. BUCKLAND, S. T., D. R. ANDERSON, K. P. BURNHAM AND J. L. LAAKE. 1993. Distance sampling: Estimating abundance of biological populations. Chapman and Hall, London, U.K.
10. BURNHAM, K. P., D. R. ANDERSON AND J. L. LAAKE. 1980. Estimation of density from line transect sampling of biological populations. Wildlife Monograph No. 72. 202 pp.
11. CALAMBOKIDIS, J. In press. Vessel surveys for harbor porpoise off the Washington coast. In H. Kajimura, ed. Harbor porpoise interactions with Makah salmon set net fishery in coastal Washington waters, 1988-89. National Marine Mammal Laboratory, 7600 Sand Point Way, N.E., Seattle, WA 98115-0070. NOAA Technical Report.
12. CALAMBOKIDIS, J., C., EWALD, G. H. STEIGER, S. M. COOPER, I. D. SZCZEPANIAK AND M. A. WEBBER. 1990. Harbor porpoise studies in the Gulf of the Farallones. Final Contract Report to the Gulf of the Farallones National Marine Sanctuary, Fort Mason Center, Bldg. 201, San Francisco, CA 94123. 58 pp.
13. CALAMBOKIDIS, J., J. C. CUBBAGE, J. R. EVENSON, S. D. OSMEK, J. L. LAAKE, P. J. GEARIN, B. J. TURNOCK, S. J. JEFFRIES AND R. F. BROWN. 1993a. Abundance estimates of harbor porpoise in Washington and Oregon waters. Final Contract Report #40ABNF201935 available from National Marine Mammal Laboratory, 7600 Sand Point Way, N.E., Seattle, WA. 55 pp.
14. CALAMBOKIDIS, J. C., J. R. EVENSON, J. C. CUBBAGE, S. D. OSMEK, D. RUGH AND J. L. LAAKE. 1993b. Calibration of sighting rates of harbor porpoise from aerial surveys. Final Contract Report to the National Marine Mammal Laboratory, 7600 Sand Point Way, N.E., Seattle, WA. 41 pp.
15. D'AGROSA, C. E. 1995. Mortalidad incidental de la vaquita (Phocoena sinus) en actividades pesqueras del alto Golfo de California, México, 1993-94. Tesis de Maestra en Ciencias, Instituto Technológico y de Estudios Superiores de Monterrey, Guaymas, Sonora, México. 112 pp.
16. FORNEY, K. A., D. A. HANAN AND J. BARLOW. 1991. Detecting trends in harbor porpoise abundance from aerial surveys using analysis of covariance. Fishery Bulletin, U.S. 89:367-377.
17. GERRODETTE, T. 1993. Trends: Software for a power analysis of linear regression. Wildlife Society Bulletin 21:515-516.
18. GERRODETTE, T., L. A. FLEISCHER, H. PERÉZ-CORTÉS AND B. VILLA-R. 1995. Distribution of the vaquita, Phocoena sinus, based on sightings from systematic surveys. Report of the International Whaling Commission (Special Issue 16):273-281.
19. HOHN, A. A., A. J. READ, S. FERNÁNDEZ, O. VIDAL AND L. T. FINDLEY. 1996. Life history of the vaquita, Phocoena sinus (Phocoenidae, Cetacea). Journal of Zoology, London 239:235-251.
20. KLINOWSKA, M., ED. 1991. Dolphins, porpoises and whales of the world. The IUCN Red Data Book. International Union for the Conservation of Nature and Natural Resources, Gland, Switzerland and Cambridge, United Kingdom.
21. LAAKE, J. L., S. T. BUCKLAND, D. R. ANDERSON AND K. P. BURNHAM. 1993. DISTANCE user's guide. Colorado Cooperative Fish and Wildlife Research Unit, Colorado State University, Fort Collins, CO 80523.
22. MANGELS, K. F., AND T. GERRODETTE. 1994. Report of cetacean sightings during a marine mammal survey in the eastern Pacific Ocean and the Gulf of California aboard the NOAA ships McArthur and David Starr Jordan July 28-November 6, 1993. NOAA Technical Memorandum NOAA-TM-NMFS-SWFSC-221. 88 pp.
23. PALKA, D. 1995. Abundance estimate of the Gulf of Maine harbor porpoise. Report of the International Whaling Commission (Special Issue 16):27-50.
24. SILBER, G. K. 1990a. Distributional relations of cetaceans in the northern Gulf of California with special reference to the vaquita, Phocoena sinus. Ph.D. thesis, University of California, Santa Cruz. 145 pp.
25. SILBER, G. K. 1990b. Occurrence and distribution of the vaquita Phocoena sinus in the northern Gulf of California. Fishery Bulletin, U.S. 88:339-346.
26. SILBER, G. K., AND K. S. NORRIS. 1991. Geographic and seasonal distribution of the vaquita, Phocoena sinus. Anales Instituto Biología de Universidad Nacional Autónoma, Mexico, Seria Zoologia 6(2):263-268.
27. SILBER, G. K., M. W. NEWCOMER AND G. J. BARROS. 1988. Observations on the behavior and ventilation cycles of the vaquita, Phocoena sinus. Marine Mammal Science 4:62-67.
28. TAYLOR, B. L., AND T. GERRODETTE. 1993. The uses of statistical power in conservation biology: The vaquita and northern spotted owl. Conservation Biology 7:489-500.
29. TURNOCK, B. J., S. J. JEFFRIES AND R. F. BROWN. In press. Population abundance of harbor porpoise (Phocoena phocoena) from aerial surveys off the coast of Oregon, Washington, Strait of Juan de Fuca, and Vancouver Island. In H. Kajimura, ed. Harbor porpoise interactions with Makah salmon set net fishery in coastal Washington waters, 1988-89. National Marine Mammal Laboratory, 7600 Sand Point Way, NE., Seattle, WA. NOAA Technical Report.
30. VIDAL, O. 1993. Aquatic mammal conservation in Latin America: Problems and perspectives. Conservation Biology 7:788-795.
31. VIDAL, O. 1995. Population biology and incidental mortality of the vaquita, Phocoena sinus. Report of the International Whaling Commission (Special Issue 16):247-272.
32. VILLA-R, B. 1993. Recovery plan for the vaquita, Phocoena sinus. NTIS Report PB93-169415. Report to the U.S. Marine Mammal Commission, 1825 Connecticut Ave. N.W., Washington, DC 20009. 36 pp.