Techniques for shipboard surveys of marine birds
Fish and Wildlife Technical Report
25
By: Patrick J. Gould and Douglas J. Forsell
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Abstract
We describe shipboard and small boat techniques used by the US Fish and Wildlife Service in Alaska to survey marine birds at sea. The basis is a 10-min, 300-m-wide, strip transect taken from a platform moving at a constant speed in a constant direction. Special routines, such as instantaneous counts of traveling birds, are explained to help reduce biases caused by factors such as varying flight patterns, ship-following and avoidance, and patchy distributions. Data recording and coding techniques and formats, based on those developed for the National Oceanic Data Center, are described.
| Publication type | Report |
|---|---|
| Publication Subtype | Federal Government Series |
| Title | Techniques for shipboard surveys of marine birds |
| Series title | Fish and Wildlife Technical Report |
| Series number | 25 |
| Year Published | 1989 |
| Language | English |
| Publisher | U.S. Fish and Wildlife Service |
| Publisher location | Washington, D.C. |
| Contributing office(s) | Alaska Science Center |
| Description | iii, 22 p. |