SWFSC Marine Mammal Survey, PODS 1992, Cruise 1468

NOAA Southwest Fisheries Science Center (SWFSC)

Dataset credit

Marine Mammal and Turtle Division, Southwest Fisheries Science Center, NMFS, NOAA

Contacts

RoleNameOrganization 
Primary contact Jeffrey Moore Southwest Fisheries Science Center, NOAA
Data entry Ei Fujioka Duke University

Citation

Abstract

This 1992 line-transect survey was designed to make abundance estimates of the central stock of common dolphin, Delphinus delphis, in the eastern Pacific. This stock of dolphin is taken in the tropical tuna fishery and has suffered a substantial decline. Previous surveys covering larger areas have permitted estimates of abundance, but with low precision. This survey was conducted by the NOAA Southwest Fisheries Science Center aboard NOAA Ships David Starr Jordan and McArthur for a combined total of approximately 32,000 kilometers surveyed from late July to early November 1992. This dataset provides the time-date and geographical coordinates, by species/stock, of all cetaceans detected during the survey, as well as the daily and intra-daily start and end points of the line-transect survey by the NOAA Ship David Starr Jordan.

Purpose

The primary purpose of the cruise was to survey the area inhabited by the central 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 United States and international yellowfin tuna purse seine fleet in the eastern tropical Pacific.

Supplemental information

This dataset is supplemental to the following datasets:
SWFSC Marine Mammal Survey, PODS 1992, Cruise 1467
SWFSC Marine Mammal Survey, PODS 1993, Cruise 1508
SWFSC Marine Mammal Survey, PODS 1993, Cruise 1509
SWFSC Marine Mammal Survey, Delphinus 2009, Cruise 1640

References

Attributes

Overview

This section explains attributes included in the original dataset. OBIS-SEAMAP restricts the attributes available to the public to date/time, lat/lon and species names/counts only. Should you need other attributes described here, you are encouraged to contact the data provider.

Attributes described below represent those in the original dataset provided by the provider.
All attributes are included in the downloadable file (CSV or ESRI File Geodatabase) for "Complete Set of Dataset".

Attributes in dataset

Attribute (table column)Description
datasetdefinition not provided
linenoLine No.
cruiseCruise No.
dateDate
timeTime
sightnoSighting No.
spcodeSpecies code
scientificScientific name
commonCommon name
tsnTaxonomic Serial Number added by OBIS-SEAMAP
latitudeLatitude in decimal degrees
longitudeLongitude in decimal degrees
schooldefinition not provided
excludeddefinition not provided
geomGeometry field added by OBIS-SEAMAP
oidUnique ID number (generated by OBIS-SEAMAP)
OBIS-SEAMAP ID211
Seabirds0
Marine mammals855
Sea turtles384
Rays and sharks0
Other species0
Non spatial0
Non species1
Total1,240
Date, Begin1992-07-29
Date, End1992-11-01
Temporal prec.111111
Latitude2.00 - 30.49
Longitude-116.30 - -77.94
Coord. prec.2 decimal digits
PlatformBoat
Data typeAnimal sighting
EffortYES (ID: 212)
Traveled (km)23,275
Effort hours2,286
Contr. through
Registered2004-09-16
Updated2021-04-29
StatusPublished
Sharing policy CC0 no rights reserved
Shared with OBIS
GBIF (via DOI)
See metadata in static HTML
See metadata in FGDC XML
See download history / statistics