Bibliography Record
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Powell, James Arthur, Jr.; Waldron, John C.
(detail)
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1981 |
The manatee population in Blue Spring, Volusia County, Florida. In: R. L. Brownell, Jr., & K. Ralls (eds.), The West Indian manatee in Florida. Proceedings of a workshop held in Orlando, Florida 27-29 March 1978 (q.v.).
Tallahassee, Florida Dept. Nat. Res. (iv + 154): 41-51. 4 tabs. 5 figs.
–Describes manatees' use of Blue Spring as a warm-water winter refugium, based on observations from 1971 to 1978, including number of manatees present as a function of temperature, daily attendance of known individuals, population composition, number of known individuals resighted in successive years, reproductive data, feeding behavior, distribution in the St. Johns River south of Lake George, and existing protective measures. A preponderance of males in the upper St. Johns River is documented, and calving intervals of 3 and 4 years are reported for one female. The primary local food source appears to be Eichhornia, though Vallisneria is preferred.
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Related Index Records (15)
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Aerial Surveys of Distribution
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1981 |
Powell & Waldron (TM; upper St. Johns R., Florida; 42, 50.) |
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Behavior, Ingestive
(SEE ALSO: Behavior, Epimeletic; Behavior, Et-epimeletic; Food; Mastication; Milk)
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1981 |
Powell & Waldron (TM; St. Johns R., Florida; eating Eichhornia & Vallisneria; 49-50.) |
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Behavior, Shelter-seeking or Escape
(SEE ALSO: Hunting and Capture; Migration and Movements; Natural Death or Injury; Temperature, Effects of)
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1981 |
Powell & Waldron (TM; use of Blue Spring, Florida; 41-46.) |
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Birth and Breeding
(SEE ALSO: Age Determination; Behavior, Sexual; Population Biology; Urogenital System)
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1981 |
Powell & Waldron (TM; Blue Spring, Florida; calving intervals; 48-49.) |
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Florida
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1981 |
Powell & Waldron (TML; use of Blue Spring & St. Johns R.; 41-51.) |
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Food
(SEE ALSO: Behavior, Ingestive; Captivity, Sirenians in; Digestive System; Food Plants; Weed Control) (NOTE: Plants reported as part of the captive but not the natural diet of sirs. will not necessarily be found under Food Plants. Papers referring to them are, however, indexed here.)
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1981 |
Powell & Waldron (TML; Blue Spring, Florida, 49-50; detritus, wood, palmetto leaf, etc.; 49.) |
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Food Plants: Alternanthera philoxeroides
(Amaranthaceae)
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1981 |
Powell & Waldron (St. Johns R., Florida; 50.) |
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Food Plants: Eichhornia crassipes
(Pontederiaceae)
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1981 |
Powell & Waldron (St. Johns R., Florida; 49-50.) |
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Food Plants: Panicum purpurascens
(Gramineae)
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1981 |
Powell & Waldron (St. Johns R., Florida; 50.) |
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Food Plants: Phragmites communis
(Gramineae)
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1981 |
Powell & Waldron (St. Johns R., Florida; 50.) |
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Food Plants: Sabal palmetto
(Palmae)
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1981 |
Powell & Waldron (Blue Spring, Florida; 49.) |
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Food Plants: Sambucus canadensis
(Caprifoliaceae)
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1981 |
Powell & Waldron (St. Johns R., Florida; 50.) |
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Food Plants: Vallisneria americana
(Hydrocharitaceae)
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1981 |
Powell & Waldron (Blue Spring, Florida; 49-50.) |
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Temperature, Effects of
(SEE ALSO: Behavior, Shelter-seeking or Escape; Migration & Movements; Natural Death or Injury; Pollution, Effects of; Thermoregulation)
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1981 |
Powell & Waldron (TML; Blue Spring, Florida; 41-46.) |
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Trichechus manatus Linnaeus, 1758
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1981 |
Powell & Waldron (use of Blue Spring, Florida; 41-51.) |
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