Satellite telemetry of King Eiders from northern Alaska 2002-2009

Steffen Oppel

doi:10.15468/uzbrdh

Satellite telemetry of King Eiders from northern Alaska 2002-2009

Citation

Oppel, S. 2013. Satellite telemetry of King Eiders from northern Alaska 2002-2009. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/487) on yyyy-mm-dd. https://doi.org/10.15468/uzbrdh accessed via GBIF.org on 2024-11-03.

Description

Original provider: University of Alaska Fairbanks and U. S. Geological Survey Dataset credits: U.S. Geological Survey Outer Continental Shelf Program U.S. Minerals Management Service U.S. Geological Survey Alaska Cooperative Fish and Wildlife Research Unit North Slope Borough ConocoPhillips Alaska Sea Duck Joint Venture U.S. Fish and Wildlife Service German Academic Exchange Service Abstract: King Eiders are large sea ducks that nest in Arctic ecosystems around the world and migrate and winter at sea. Since 2002, the University of Alaska Fairbanks has tracked the migration and movements of King Eiders from breeding grounds in northern Alaska. This dataset includes all the locations provided by satellite-tracked King Eiders between June 2002 and December 2008. King Eiders migrated from breeding grounds in northern Alaska to winter regions in the Bering Sea. Females returned to breeding grounds in Alaska, whereas males dispersed over 50% of the species global range in the summer after capture. Purpose: This study examined the migration routes and spatial distribution of King Eiders breeding in northern Alaska throughout the annual cycle. Satellite transmitters provided information on migration timing, migration distances, location of important molt, winter, and staging areas, migratory connectivity between those areas, and estimates of annual survival for adult and juvenile King Eiders. Supplemental information: The authors and field assistants captured adult and juvenile King Eiders with mist nets on breeding grounds in northern Alaska and equipped each bird with an implanted satellite transmitter (PTT 100, Microwave Telemetry Inc.). Satellite transmitters provided locations every 2-7 days for a time period of 10-20 months per individual. We used a filter program (PC-SAS Argos Filter v7.02, David Douglas, USGS Science Center) to remove implausible locations, and retained one location per duty cycle. The filter algorithm flags implausible locations based on two different filtering methods: 1. Minimum Redundant Distance (MRD): a user-defined distance threshold for determining locational redundancy; and 2. Distance, Angle and Rate (DAR): measurements that attempt to identify implausible locations based on the fact that most suspicious ARGOS locations cause an animal to incorrectly move a substantial distance and then return, resulting in a tracking-path that goes 'out-and-back' (and/or further validated by unrealistic movement rates, depending on the temporal frequency of the locations). A hybridization of the MRD and DAR filtered results is used for the data in this dataset. The hybrid was specifically developed for avian tracking that includes relatively high-speed, directional, migratory events. Locations that passed the MRD filter are retained as ‘anchor points,’ then chronologically intervening DAR locations are evaluated to determine if they adhere to directional movement when compared to the vector formed by their preceding and subsequent MRD anchor locations.

Purpose

This study examined the migration routes and spatial distribution of King Eiders breeding in northern Alaska throughout the annual cycle. Satellite transmitters provided information on migration timing, migration distances, location of important molt, winter, and staging areas, migratory connectivity between those areas, and estimates of annual survival for adult and juvenile King Eiders.

Sampling Description

Study Extent

NA

Sampling

NA

Method steps

NA

Additional info

marine, harvested by iOBIS

Taxonomic Coverages

Scientific names are based on the Integrated Taxonomic Information System (ITIS).

Somateria spectabilis
common name: King Eider rank: species

Geographic Coverages

Alaska,Siberia,arctic tundra,Prudhoe Bay,Beaufort Sea,Chukchi Sea,Bering Sea,Arctic Ocean,Victoria Island,Banks Island,Taymyr Peninsula

Bibliographic Citations

Contacts

Steffen Oppel
originator
position: Primary contact
Department of Biology and Wildlife, University of Alaska Fairbanks
email: steffen.oppel@gmail.com
homepage: http://mercury.bio.uaf.edu/kingeider

OBIS-SEAMAP
metadata author
Marine Geospatial Ecology Lab, Duke University
A328 LSRC building
Durham
27708
NC
US
email: seamap-contact@duke.edu
homepage: http://seamap.env.duke.edu

OBIS-SEAMAP
distributor
Marine Geospatial Ecology Lab, Duke University
A328 LSRC building
Durham
27708
NC
US
email: seamap-contact@duke.edu
homepage: http://seamap.env.duke.edu

Steffen Oppel
owner
position: Primary contact
Department of Biology and Wildlife, University of Alaska Fairbanks
email: steffen.oppel@gmail.com
homepage: http://mercury.bio.uaf.edu/kingeider

Steffen Oppel
administrative point of contact
position: Primary contact
Department of Biology and Wildlife, University of Alaska Fairbanks
email: steffen.oppel@gmail.com
homepage: http://mercury.bio.uaf.edu/kingeider