Patuxent Home

Accession Number 5004722

Title Demographic Modeling of North Pacific Albatross Populations

Project Description Breeding populations of Black-footed (Diomedea nigripes) and Laysan (Diomedea immutabilis)

albatross have experienced significant declines. These species face significant threats from

commercial longline fisheries; thousands are killed annually. Long-term banding data exist

(>170,000 records in an inefficient database and another 100,000 historic records on paper).

However, these data are not currently organized for the demographic analyses possible with

contemporary analytical models. These data could provide long-term, comparative estimates of

survival and population trends essential for management. The first need is a readily accessible,

functional database of all albatross banding data. These data can then be analyzed and a model

developed to estimate survival rates and related demographic parameters. This will assist in

population management and help to effectively interpret bycatch mortality information for these

declining species. Objectives are to: (1) Develop a database of bandings and re-sightings of

Black-footed and Laysan albatross in the North Pacific; (2) Develop a demographic model for

albatross populations from historic mark-recapture data that involves estimating survival,

movement, breeding proportions, and growth rates, and relate them to longline fisheries pressure.

Keywords albatross, breeding probability, bycatch, capture-recapture, population dynamics, survival,

Principal William Kendall, USGS Patuxent Wildlife Research Center:; James

Investigators Nichols, USGS Patuxent Wildlife Research Center:; Beth Flint, USFWS,

Pacific Remote Islands NWRC:; Paul Doherty, Universite Pierre et Marie

Curie: ; Melanie Steinkamp, USGS Patuxent Wildlife Research Center: ; Evan Cooch,

Department of Natural Resources, Cornell University:; Chandler Robbins,

USGS Patuxent Wildlife Research Center:;

Navigate PWRC SIS projects by Accession Number: First Previous Next Last

Return to SIS Projects Listing

Nav Bar link SIS List Nav Bar Link Patuxent Nav Bar Link Biological Resources Nav Bar Link USGS Nav Bar Link Interior Navigation Bar