SWFSC Cetacean Sightings during a Marine Mammal Survey in the Eastern Tropical Pacific (1508)
Entry ID: seamap213

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Summary
Abstract: This 1993 line-transect survey was designed to make abundance
estimates of the northern stock of common dolphin, Delphinus delphis, in the
eastern Pacific. This stock of dolphin is taken in the tropical tuna fishery.
The index of relative abundance for this stock, computed from sightings on tuna
vessels, has declined substantially in the last decade. However, because tuna
vessels cover only the ... View entire text

Purpose: The primary objective of the cruise was to survey the area inhabited
by the northern stock of common dolphins, and to make an estimate of its
absolute abundance in order to assess the impact of the dolphins killed by the
U. S. and international yellowfin tuna purse seine fleet in the eastern
tropical Pacific.

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
Description: Access data from the OBIS and OBIS-SEAMAP websites.
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Caption:  Cetacean Sightings
 
Geographic Coverage
Spatial coordinates   
  N: 41.94   S: 21.03   E: -106.97   W: -130.64

Data Set Citation
Dataset Originator/Creator: NOAA Southwest Fisheries Science Center (SWFSC)
Dataset Title: SWFSC Cetacean Sightings during a Marine Mammal Survey in the Eastern Tropical Pacific (1508)
Dataset Series Name: OBIS-SEAMAP
Dataset Release Date: 2004-09-16 16:02:54.425615-04
Dataset Release Place: http://seamap.env.duke.edu/
Dataset Publisher: OBIS-SEAMAP
Data Presentation Form: vector digital data
Online Resource: http://swfsc.noaa.gov/
Parent DIF
This data set description is a member of a collection. The collection is described in
OBIS-SEAMAP

Temporal Coverage
Start Date: 1993-07-28
Stop Date: 1993-11-02
Data Resolution
Latitude Resolution: 0.000167 Decimal degrees
Longitude Resolution: 0.000167 Decimal degrees
Horizontal Resolution Range: 1 meter - < 30 meters
Platform
SHIPS Ancillary Description
Access Constraints 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.
Ancillary Keywords
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Data Set Progress
COMPLETE
Data Center
OBIS Spatial Ecological Analysis of Megavertebrate Populations Supplemental Info
Data Center URL: http://seamap.env.duke.edu/

Data Center Personnel
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
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
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Publications/References
Mangels, Karl F., and Tim Gerrodette. Report on Cetacean Sightings during a
Marine Mammal Survey in the Eastern Tropical Pacific Ocean aboard the NOAA
Ships McArthur and David Starr Jordan, July 28-November 6, 1993. 1994.
NOAA-TM-NMFS-SWFSC-211.
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2007-04-11
Last DIF Revision Date: 2014-03-13
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