Abstract:
From 13 July to 24 August, 1993, a part of a larger study, waters off the Alaskan Peninsula were surveyed for killer whales (Orcinus orca) from the NOAA Glorita using line transect methodology. To provide adequate coverage throughout the area, the study was limited to areas of known killer whale concentrations. The vessel was 44.8 m (147 ft) long and had a bridge height of 8.8 m (29 feet).
Purpose:
The objectives of this study were as follows: 1) Develop a photographic identification catalogue of each killer whale encountered, and its pod, to determine pod identity, distribution, and movements relative to annual survey effort. 2) Obtain minimum population estimated of killer whales in the southeastern Bering Sea, central/eastern Aleutian Islands, western Gulf of Alaska (including Prince William Sound), and southeastern Alaska. 3) Establish baseline data for detecting annual changes in abundance.
SUPPLEMENTAL INFORMATION: Note: This dataset and associated effort data was updated on Sept 8, 2005. Those who downloaded them before that date should renew them.
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
Related URL
Link:
GET DATA
Link:
GET DATA
Description:
Access data from the OBIS and OBIS-SEAMAP websites.
Link:
VIEW PROJECT HOME PAGE
Description:
Ocean Biogeographic Information System - Spatial Ecological Analysis of Megavertebrate Populations (OBIS-SEAMAP)
ACCESS CONSTRAINTS: Open public unless otherwise noted.
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 Constraints.
Use Constraints
Not to use data contained in OBIS-SEAMAP in any publication, product, or commercial application without prior written consent of the original data provider. To cite both the data provider and OBIS-SEAMAP appropriately after approval of use is obtained. Also please refer to Distribution Liability.
Name:
PATRICK
N.
HALPIN Phone:
919-613-8062
Email:
phalpin at duke.edu
Contact Address:
Duke University
Box 90328 City:
Durham
Province or State:
NC
Postal Code:
27708
Country:
USA
Distribution
Distribution_Format:
Shapefile
Personnel
EI
FUJIOKA Role:
TECHNICAL CONTACT
Role:
DIF AUTHOR
Phone:
919-613-8021
Fax:
919-684-8741
Email:
efujioka at duke.edu
Contact Address:
LSRC A321
Box 90328 City:
Durham
Province or State:
NC
Postal Code:
27708
Country:
USA
MARILYN
DAHLHEIM Role:
TECHNICAL CONTACT
Phone:
206-526-4020
Email:
marilyn.dahlheim at noaa.gov
Contact Address:
NATIONAL MARINE MAMMAL LABORATORY
7600 Sand Point Way NE City:
Seattle
Province or State:
Washington
Postal Code:
98115
Country:
USA
Publications/References
Abundance and distribution of Killer Whales (Orcinus orca) in Alaska, 1993.
Creation and Review Dates
DIF Creation Date:
2007-01-22
Last DIF Revision Date:
2008-01-13
