Estimating Sighting Proportions of American Alligator Nests during Helicopter Survey

Rice, Kenneth G. and Percival, H. Franklin and Woodward, Allan R. (2000) Estimating Sighting Proportions of American Alligator Nests during Helicopter Survey. Proceedings of the Southeastern Association of Fish and Wildlife Agencies, 54, pp. 314-321.

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Abstract

Proportions of American alligator (Alligator mississippiensis) nests sighted during aerial survey in Florida were estimated based upon multiple surveys by different observers. We compared sighting proportions across habitats, nesting seasons, and observer experience levels. The mean sighting proportion across all habitats and years was 0.736 (SE=0.024). Survey counts corrected by the mean sighting proportion reliably predicted total nest counts (R2=0.933). Sighting proportions did not differ by habitat type (P=0.668) or year P=0.328). Experienced observers detected a greater proportion of nests (P<O.OOOl) than did either less experienced or inexperienced observers. Reliable estimates of nest abundance can be derived from aerial counts of alligator nests when corrected by the appropriate sighting proportion.

Item Type: Article
Title: Estimating Sighting Proportions of American Alligator Nests during Helicopter Survey
Personal Creator/Author:
CreatorsEmail
Rice, Kenneth G.
Percival, H. Franklin
Woodward, Allan R.
Journal or Publication Title: Proceedings of the Southeastern Association of Fish and Wildlife Agencies
Volume: 54
Page Range: pp. 314-321
Date: 2000
ISSN: 0276-7929
Issuing Agency: Florida Cooperative Fish and Wildlife Research Unit
Uncontrolled Keywords: American alligator; Alligator mississippiensis; aerial surveys; nesting; Florida
Subjects: Biology
Management
Item ID: 5061
Depositing User: Stephanie Haas
Date Deposited: 17 Apr 2011 15:09
Last Modified: 29 Sep 2011 15:29
URI: http://aquaticcommons.org/id/eprint/5061

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