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This is a collection of papers presented at a 1992 technical workshop on manatee population biology, sponsored by the U.S. Fish and Wildlife Service and the Florida Department of Natural Resources. Topics covered include manatee research programs, techniques for studying manatee population biology, and reports of completed studies. The book concludes with recommendations from the workshop and a brief synopsis of pertinent work that has been published since the workshop.
The Florida manatee (Trichechus manatus latirostris) is a unique element of the U.S. fauna. It is a distinct subspecies of the West Indian manatee (Domning and Hayek 1986) and one of the largest inshore mammals of the continent, reaching weights to 1,650 kg (Rathbun et al. 1990). Annual migratory circuits of some individuals through the intracoastal waterways of the Atlantic Coast are 1,700 km round trips at seasonal travel rates as high as 50 km/day (Reid and O'Shea 1989; Reid et al. 1991), resulting in one of the longest remaining intact mammalian migrations in the eastern United States. Manatees are the only living North American representatives of the small mammalian Order Sirenia and are therefore the only embodiment of the unique suite of biological features that define the distinctive adaptive syndrome at the ordinal level of the taxonomic hierarchy. Features of this adaptive syndrome can be directly related to the lifestyle of aquatic herbivory (O'Shea and Reep 1990). In manatees, these features include unique aspects of morphology (pachyostosis; horizontal, unilobular lungs and diaphragm; indeterminate numbers of molars undergoing continuous replacement; dexterous forelimbs and prehensile lips; and a hind-gut as long or longer than 30 m), physiology (in particular an unusually low metabolic rate and a high thermal conductance that lead to energetic stresses in winter, ameliorated by migrations and aggregations in warm-water refugia), and behavioral ecology (lack of a rigid social organization, seasonal migrations, absence of strong circadian rhythms).
A photographic guide that “focuses on the beauty, grace and vulnerability of these herbivores, but it also covers other sea mammals and their habitats” (The Biologist). Named a Choice Outstanding Academic Title In this book, manatee expert John E. Reynolds III and famed photographer Wayne Lynch join forces to reveal the clearest portrait of manatees ever published. Florida Manatees is a song for the manatee, a celebration of the lives of these majestic creatures. Reynolds’s concise, informative text shares what scientists know about manatees, while Lynch’s beautiful photographs instantly demonstrate how special these “potatoes with whiskers” really are. By encouraging an appreciation of manatees, the authors hope to help ensure a future in which Floridians can find ways to coexist with and continue to enjoy these uniquely wonderful sirenian inhabitants of their state. Included in this book: How manatees first came to Florida waters How manatees fit into the ecosystems of Florida What and how much manatees eat How manatees behave and communicate with one another Why manatees look the way they do Why manatees have whiskers How manatee mothers feed their young and much more “A lovely book that sounds as though it would appeal primarily to scientists, but which offers inviting color photos and history that make it accessible to lay audiences both within Florida and outside the state.” —Donovan’s Literary Services
From two scientists who have been at the forefront of manatee research for over three decades, The Florida Manatee offers an engaging, accessible introduction to manatee biology, including communication, diet, long-distance migration, and much more. This second edition is updated with new scientific research, as well as discussions of recent conservation efforts—largely driven by manatee injuries and deaths resulting from boat collisions—that have contributed to the robust growth of manatee numbers in Florida. It also includes the latest predictions for manatee populations and health in the future, both in Florida and worldwide. This is the perfect book for anyone seeking the most comprehensive, current information on this fascinating marine mammal.
This is a collection of papers presented at a 1992 technical workshop on manatee population biology, sponsored by the U.S. Fish and Wildlife Service and the Florida Department of Natural Resources. Topics covered include manatee research programs, techniques for studying manatee population biology, and reports of completed studies. The book concludes with recommendations from the workshop and a brief synopsis of pertinent work that has been published since the workshop.
A synthesis of the ecological and related knowledge pertinent to understanding the biology and conservation of dugongs and manatees.