Bibliography and Index of the Sirenia and Desmostylia  

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"Shepherd, R."

Shepherd, R.: SEE Marsh et al., 1994; Preen et al., 1997. (detail)
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 Marsh, Helene D.; Prince, Robert I. T.; Saalfeld, W. Keith; Shepherd, R. (detail)
   
1994
The distribution and abundance of the dugong in Shark Bay, Western Australia.
Wildl. Res. 21(2): 149-161. 4 tabs. 4 figs.
–Aerial surveys in winter 1989 gave a minimum population estimate of 10,146ñ1,665 (s.e.) dugongs at an overall density of 0.71ñ0.12 (s.e.) dugongs/kmý, the highest density ever recorded on a large-scale survey. The high proportion of calves (19%) suggested an exceptionally high calving rate in 1988. Dugong density was highest in relatively deep water (12-16 m). Surveys in summer 1990 and 1991 confirmed that dugong distribution in Shark Bay varies seasonally with water temperature.
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 Preen, Anthony R.; Marsh, Helene D.; Lawler, Ivan R.; Prince, Robert I. T.; Shepherd, R. (detail)
   
1997
Distribution and abundance of dugongs, turtles, dolphins and other megafauna in Shark Bay, Ningaloo Reef and Exmouth Gulf, Western Australia.
Wildl. Res. 24(2): 185-208. 5 tabs. 10 figs.
–Aerial surveys in 1989 and 1994 estimated populations of about 10,000 dugongs at Shark Bay and about 1,000 each at Ningaloo Reef and Exmouth Gulf. Extension of the Shark Bay Marine Park to coincide with the marine section of the Shark Bay World Heritage Area is recommended.
Daryl P. Domning, Research Associate, Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, D.C. 20560, and Laboratory of Evolutionary Biology, Department of Anatomy, College of Medicine, Howard University, Washington, D.C. 20059.
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