Estimating sighting proportions of American alligator nests during helicopter survey

Proceedings of the Annual Conference of the Southeastern Association of Fish and Wildlife Agencies
By: , and 

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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 (7?2=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<0.0001) 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.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Estimating sighting proportions of American alligator nests during helicopter survey
Series title Proceedings of the Annual Conference of the Southeastern Association of Fish and Wildlife Agencies
Volume 54
Year Published 2000
Language English
Publisher Southeaster Association of Fish and Wildlife Agencies
Contributing office(s) Southeast Ecological Science Center
Description 8 p.
First page 314
Last page 321
Online Only (Y/N) N
Additional Online Files (Y/N) N