Wilcox, J. Ross: SEE ALSO Craig et al., 1997; Garrott et al., 1994, 1995; Packard, Frohlich et al., 1984, 1985; Packard et al., 1989; Reid et al., 1991; Reynolds & Wilcox; Weigle et al., 1988.
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Wilcox, J. Ross
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1979? |
Florida Power and Light Company and endangered species: examples of coexistence.
Proc. Mitigation Symposium (Colorado State Univ., Ft. Collins, July 16-20, 1979): 451-454.
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Wilcox, J. Ross
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1980 |
Endangered species: compatibility with a utility.
Proceedings of the Conference Coastal Zone '80 (Hollywood, Florida): 179-185.
–Manatee, 180-182.
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Packard, Jane M.; Frohlich, Richard Kipp; Reynolds, John E., III; Wilcox, J. Ross
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1984 |
Factors influencing indices of manatee abundance in the Fort Myers region, winter 1983/84.
Manatee Population Research Rept. (Gainesville, Fla., Florida Cooperative Fish & Wildlife Research Unit) No. 5: 1-63. 12 tabs. 12 figs.
–See also Appendix 1. Analyzes the effects of manatee density, visibility, temperature, tide, and survey techniques on aerial survey results. Concludes that the aerial survey data are not sufficient to estimate actual abundance and should instead be treated as indices of trends. Separate surveys should be designed to maximize precision and accuracy of data obtained. The "block/recount" survey technique is introduced to estimate the error associated with indices obtained from individual surveys, and calibration of observers is recommended.
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Packard, Jane M.; Frohlich, Richard Kipp; Reynolds, John E., III; Wilcox, J. Ross
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1985 |
Manatee response to interrupted operation of the Fort Myers power plant, winter 1984/85.
Manatee Population Research Rept. (Gainesville, Fla., Florida Cooperative Fish & Wildlife Research Unit) No. 8: 1-20. 1 tab. 5 figs.
–See also Appendix 1. Compares manatee abundance, distribution, and local movement patterns in winter 1984 with those in winter 1985, when the plant was temporarily shut down. Most manatees sought out the warmest water available at a given time, but the interruption in the warm-water supply apparently did not last long enough for them to suffer evident harm. Also discusses the effects of visibility and other factors on consistency of aerial counts of manatees, and some results of radiotagging 16 animals.
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Reynolds, John E., III; Wilcox, J. Ross
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1985 |
Abundance of West Indian manatees (Trichechus manatus) around selected Florida power plants following winter cold fronts, 1982-1983.
Bull. Mar. Sci. 36(3): 413-422. 4 tabs. 1 fig.
–Aerial surveys focussed on 5 Florida Power & Light Company plants revealed lower numbers of manatees than in previous years, probably reflecting unusually mild winter temperatures in 1982-83.
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Reynolds, John E., III; Wilcox, J. Ross
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1986 |
Distribution and abundance of the West Indian manatee Trichechus manatus around selected Florida power plants following winter cold fronts: 1984-85.
Biol. Conserv. 38(2): 103-113. 3 tabs.
–Aerial surveys focussed on 5 Florida Power & Light Company plants revealed generally higher numbers of manatees than in previous years, probably due to very cold temperatures in January 1985.
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Reynolds, John E., III; Wilcox, J. Ross
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1987 |
People, power plants, and manatees.
Sea Frontiers 33(4): 263-269. 6 figs. July-Aug. 1987.
–Pop. acc. of the use of power-plant discharges of warm water as cold-weather refugia by Florida manatees, and related conservation problems.
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Weigle, Bradley L.; Reynolds, John E., III; Patton, Geoffrey W.; Wilcox, J. Ross
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1988 |
Manatee (Trichechus manatus) winter use of warm water discharges in Tampa Bay. In: K. Mahadevan, R. K. Evans, P. Behrens, T. Biffar, & L. Olsen (eds.), Proc. Southeastern Workshop on Aquatic Ecological Effects of Power Generation.
Mote Marine Lab. Rept. No. 124: 153-164.
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Reynolds, John E., III; Wilcox, J. Ross
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1988b |
Importance of aerial surveys to assess manatee (Trichechus manatus) winter use of Florida Power and Light Company plants from 1977-1986. In: K. Mahadevan, R. K. Evans, P. Behrens, T. Biffar, & L. Olsen (eds.), Proceedings of the Southeastern Workshop on Aquatic Ecological Effects of Power Generation, December, 1986.
Mote Mar. Lab. Rept. No. 124 (546 pp.): 138-152. 2 tabs. 1 fig. May 1988.
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Packard, Jane M.; Frohlich, Richard Kipp; Reynolds, John E., III; Wilcox, J. Ross
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1989 |
Manatee response to interruption of a thermal effluent.
Jour. Wildl. Manage. 53(3): 692-700. 2 tabs. 4 figs.
–Aerial survey data on manatees near a Ft. Myers (Florida) power plant showed that they did not leave the area when the plant was shut down for 3 weeks in Jan. 1985; instead they gathered in an area of deep waters that cooled more slowly than surrounding waters. Applicable survey techniques are discussed, together with the management implications of power-plant shutdowns and the installation of warm-water wells at the plant for the manatees' benefit following the 1985 shutdown.
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Reid, James P.; Rathbun, Galen B.; Wilcox, J. Ross
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1991 |
Distribution patterns of individually identifiable West Indian manatees (Trichechus manatus) in Florida.
Mar. Mamm. Sci. 7(2): 180-190. 2 tabs. 2 figs. Apr. 30, 1991.
–Documents long-distance movements and site fidelity on the basis of photographs of distinctively scarred manatees. The migration pattern is predominantly northward in spring and southward in fall.
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Garrott, Robert A.; Ackerman, Bruce B.; Cary, John R.; Heisey, Dennis M.; Reynolds, John E., III; Rose, Patrick M.; Wilcox, J. Ross
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1994 |
Trends in counts of Florida manatees at winter aggregation sites.
Jour. Wildl. Manage. 58(4): 642-654. 2 tabs. 3 figs. Oct. 1994.
–Analyzes data from aerial surveys, 1977-1992, and correlates manatee numbers with temperature covariates. Results indicate an increase in the counts at east-coast aggregation sites, but this may not reflect a real population trend.
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Reynolds, John E., III; Wilcox, J. Ross
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1994 |
Observations of Florida manatees (Trichechus manatus latirostris) around selected power plants in winter.
Mar. Mamm. Sci. 10(2): 163-177. 3 tabs. 2 figs. Apr. 27, 1994.
–Summarizes data from aerial surveys, 1982-1992, at five Florida Power and Light Company plants, and discusses the patterns of seasonal manatee movements documented and the apparent (and worrisome) declining trend in the numbers and proportion of calves sighted.
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Garrott, Robert A.; Ackerman, Bruce B.; Cary, John R.; Heisey, Dennis M.; Reynolds, John E., III; Wilcox, J. Ross
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1995 |
Assessment of trends in sizes of manatee populations at several Florida aggregation sites. In: T. J. O'Shea, B. B. Ackerman, & H. F. Percival (eds.), Population biology of the Florida manatee (q.v.).
Information & Technology Rept. (U.S. Dept. Interior, Natl. Biological Service) (vi + 289) 1: 34-55. 8 tabs. 14 figs. 2 apps. Aug. 1995.
–Abstr. in O'Shea et al. (1992: 15-16).
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Craig, Bruce A.; Newton, Michael A.; Garrott, Robert A.; Reynolds, John E., III; Wilcox, J. Ross
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1997 |
Analysis of aerial survey data on Florida manatee using Markov chain Monte Carlo.
Biometrics 53(2): 524-541. 1 tab. 10 figs.
–French summ. Complex mathematical treatment of Atlantic Coast survey data, 1982-92, indicates that the manatee population increased during the 1980s, but the population growth rate declined in the early 1990s, while the population size was stable or slightly decreasing.
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Bibliography and Index of the Sirenia and Desmostylia 