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Kinnaird, Margaret F.; Valade, James
(detail)
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1983 |
Manatee use of two power plant effluents on the St. Johns River in Jacksonville, Florida.
Site-Specific Reduction of Manatee Boat/Barge Mortality Research Report (Florida Cooperative Fish & Wildlife Research Unit, Univ. of Florida, Gainesville) No. 1: iii + 63. 5 tabs. 6 figs. Oct. 1983.
–Documents manatee use of the effluents in relation to air and water temperatures, and describes local and long-distance manatee movements and site fidelity as shown by recognition of individuals by scars. Concludes that the Jacksonville plants are used only by small numbers of transient manatees, mainly at the beginning and end of winter, but that these plants may nonetheless be important to the manatee population on a regional scale. Makes recommendations for research and management actions at the Jacksonville plants. Includes an appendix showing the scar patterns of 36 individually identified manatees.
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Kinnaird, Margaret F.
(detail)
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1983a |
Aerial census of manatees and boats over the lower St. Johns River and the Intracoastal Waterway in northeastern Florida.
Site-Specific Reduction of Manatee Boat/Barge Mortality Research Report (Florida Cooperative Fish & Wildlife Research Unit, Univ. of Florida, Gainesville) No. 2: iv + 56. 10 tabs. 20 figs. Oct. 1983.
–Presents and analyzes data from one full year on manatee abundance, distribution, movements, behavioral patterns, adult/calf ratios, effects of temperature and boat traffic, and population trends. Also analyzes in detail the distribution of boat traffic and its composition in terms of boat sizes. Concludes that the manatee population in northeastern Florida is likely to be unstable and declining, and makes recommendations for management.
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Kinnaird, Margaret F.
(detail)
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1983b |
Evaluation of potential management strategies for the reduction of boat-related mortality of manatees.
Site-Specific Reduction of Manatee Boat/Barge Mortality Research Report (Florida Cooperative Fish & Wildlife Research Unit, Univ. of Florida, Gainesville) No. 3: ii + 43. 2 tabs. Oct. 1983.
–Discusses pros and cons of methods of physical protection of manatees (propeller guards, artificial barriers, acoustic repellents, deeper dredging of channels) and passive detection and avoidance (boat speed zones, routing of boat traffic, marina siting policies, sonar imagery, public education). Describes some inconclusive experiments to test manatee response to high-intensity sounds (3-4) and the effectiveness of manatee detection by sonar (9-12). Recommends a combination of strategies, including public education, wise marina-siting policies, and boat speed zones, plus further research on propeller guards. Includes an appendix (20-43) illustrating numerous designs for propeller guards and related devices.
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Kinnaird, Margaret F.
(detail)
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1983c |
Site-specific analysis of factors potentially influencing manatee boat/barge mortality.
Site-Specific Reduction of Manatee Boat/Barge Mortality Research Report (Florida Cooperative Fish & Wildlife Research Unit, Univ. of Florida, Gainesville) No. 4: iv + 41. 15 tabs. 4 figs. Oct. 1983.
–Analyzes patterns of boat-related manatee deaths in relation to various measures of manatee and boat activity in Brevard County and the lower St. Johns River, Florida. In Brevard County, manatees seem to be hit more frequently while feeding than while engaged in other activities, and are killed by small boats as often as by large ones. In the lower St. Johns River, manatees are killed mainly by large vessels and barges, especially during the warmer months, and a greater proportion of adults was killed than in Brevard County. Data from scar patterns show no tendency for injured animals to avoid further boat encounters, but other evidence suggests that manatees do learn traffic patterns. Concludes with management and research recommendations for reducing boat mortality.
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Kinnaird, Margaret F.
(detail)
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1986 |
The manatee: South Carolina's summertime visitor.
South Carolina Wildlife 33(2): 6-10. 5 figs. Mar.-Apr. 1986.
–Pop. acc. of Florida manatees and their occasional occurrence in South Carolina.
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Bibliography and Index of the Sirenia and Desmostylia 