[Source_Name: Short_Name='RADIO TRANSMITTERS']
Wake Forest University Satellite Tracking - Tern Island Albatrosses 1999Entry ID: seamap314
Abstract: Satellite telemetry was used to identify the foraging distributions
of two congeneric species of albatrosses that nest in the tropics / subtropics.
Breeding Black-footed albatross (Phoebastria nigripes) and Laysan albatross
(Phoebastria immutabilis) nesting in Tern Island (Northwest Hawaiian Islands)
and tracked during the 1998 breeding season (January - June) performed foraging
trips to ... continental shelves off North America. Black-footed albatross made
long trips to the west coast of North America (British Columbia to California).
Laysan albatross traveled primarily to the north of the Hawaiian Islands, and
reached the waters of the Aleutian Islands and the Gulf of Alaska. These
albatross species mixed short and long trips during the chick-rearing period
(February - June), but engaged in short foraging trips during the brooding
period (within 18 days after chick hatched, January - February). In 1999, the
breeding success of both albatross species was depressed, with a large-scale
failure for the Laysan albatross. Out of nine Black-footed albatross tracked,
two chicks died during this study. Out of sixteen Laysan albatross tracked, the
eggs of seven birds did not hatch and eight chicks died during the tracking
study. Due to this massive breeding failure, the satellite tracked birds
abandoned their colony and dispersed widely across the North Pacific Ocean.
Thus, the 1998 (central-place foraging) and 1999 (dispersal from colonies)
tracking data they should be considered separately.
Purpose: The 1999 data provided information on albatross movements during a
year of depressed reproductive success, when many birds abandoned the colony.
An understanding on the interplay between the distribution and the reproductive
success of North Pacific albatrosses has important implications for assessing
how oceanographic variability influences their population dynamics.
SUPPLEMENTAL INFORMATION: ... These albatross were tracked using PTT-100 Argos
transmitters (Microwave Telemetry, Columbia, MD) operating at a 90-second
repetition rate and programmed to operate on a 8:24 h ON:OFF duty cycle.
Transmitter bench-tests before deployment revealed that the Argos location
quality classes (lcs) had the following median position errors, expressed in
kilometers: lc B (8.46), lc A (3.29), lc 0 (4.80), lc 1 (1.96), lc 2 (0.49),
and lc 3 (0.26). The low-quality class B locations were discarded because they
mis-represented the telemetry tracks. Thus, this dataset includes 4635
high-quality locations (lc classes A or better) with median positional errors <
4 km. We thank C. Alexander, L. Carsten, P. Fernández, F. Juola, P. Sievert, A.
Viggiano and S. Wang for assistance in the field, and the U.S. Fish and
Wildlife Service for logistical support. This research was funded by National
Science Foundation grant DEB 9629539 to D. Anderson.
CURRENTNESS REFERENCE: ground condition
SPATIAL REFERENCE INFORMATION - GEODETIC MODEL
Horizontal Datum Name: D_WGS_1984
Ellipsoid Name: WGS_1984
Semi-major Axis: 6378137.000000
Denominator of Flattening Ratio: 298.257224
Data Set Citation
Dataset Originator/Creator: Wake Forest University
Dataset Title: Wake Forest University Satellite Tracking - Tern Island Albatrosses 1999
Dataset Series Name: OBIS-SEAMAP
Dataset Release Date: 2005-11-15 13:59:02.38513-05
Dataset Release Place: http://seamap.env.duke.edu/
Dataset Publisher: OBIS-SEAMAP
Data Presentation Form: vector digital dataOnline Resource: http://www.wfu.edu/~djanders/anderson.htm
This data set description is a member of a collection. The collection is described in
Start Date: 1999-01-15Stop Date: 1999-06-10
Latitude Resolution: 0.000167 Decimal degrees
Longitude Resolution: 0.000167 Decimal degrees
Horizontal Resolution Range: 1 meter - < 30 meters
Access Constraints ACCESS CONSTRAINTS: All limits on data accessibility pertaining to the
OBIS-SEAMAP system apply to this database.
DISTRIBUTION LIABILITY: Not to hold OBIS-SEAMAP liable for errors in the data.
While we have made every effort to ensure the quality of the database, we
cannot guarantee the accuracy of these datasets. Also please refer to Use
Use Constraints 1. Not to use data contained in OBIS-SEAMAP in any publication, product, or
commercial application without prior written consent of the original data
provider. 2. To cite both the data provider and OBIS-SEAMAP appropriately after
approval of use is obtained. 3. Not to hold OBIS-SEAMAP liable for errors in
the data. While we have made every effort to ensure the quality of the
database, we cannot guarantee the accuracy of these datasets.
Data Set Progress
Distribution Format: Shapefile
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Email: efujioka at duke.edu
LSRC A321 Box 90328
Province or State: NC
Postal Code: 27708
Role: TECHNICAL CONTACT
Phone: (336) 758-5319
Email: da at wfu.edu
Department of Biology Wake Forest University 246 Winston Hall
Province or State: NC
Postal Code: 27109
Fernandez P., Anderson D.J., Sievert P.R., and Huyvaert K. Foraging
destinations of three low-latitude albatross (Phoebastria) species. 2001.
Journal of Zoology. 254: 391-404.
Creation and Review Dates
DIF Creation Date: 2007-04-16
Last DIF Revision Date: 2008-01-13