SWFSC Marine Mammal Survey, CADDIS 1995, Cruise 1601
NOAA Southwest Fisheries Science Center (SWFSC)

Dataset credit

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

Contacts

RoleNameOrganization 
Primary contact Jay Barlow NOAA Southwest Fisheries Science Center
Data entry Benjamin Best Duke University

Citation

Abstract

The Cetacean Acoustic Detection and Dive
Interval Studies (CADDIS) survey was conducted by the NOAA Southwest Fisheries Science Center primarily in the southern Gulf of California aboard NOAA research ship McArthur from early September to early November 1995 for a total of approximately 6,000 kilometers surveyed. The project focused on two potential approaches to improve abundance estimates of long-diving whales: (1) acoustic detection of diving animals, and (2) collecting dive interval data on those species to serve as a basis for a model-based abundance correction factor. 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.

Purpose

The primary purpose of this research was to learn how to better estimate the abundance of long-diving whales during ship line-transect surveys. These whale species, including beaked whales and dwarf and pygmy sperm whales, dive for such long periods of time that there is a high probability that they will never surface within the visual range of observers searching from a moving survey vessel with 25X binoculars.

Supplemental information

N/A

References

Attributes

Overview

Attributes described below represent those in the original dataset provided by the provider.
Only minimum required attributes are visible and downlodable online. Other attributes may be obtained upon provider's permission unless otherwise noted below.

Attributes in dataset provided

Attribute (table column)Description
datasetdefinition not provided
linenodefinition not provided
cruisedefinition not provided
datedefinition not provided
timedefinition not provided
sightnodefinition not provided
spcodedefinition not provided
scientificdefinition not provided
commondefinition not provided
tsnSpecies ITIS TSN
latitudedefinition not provided
longitudedefinition not provided
schooldefinition not provided
excludeddefinition not provided
geomdefinition not provided
oidUnique ID number (generated by SEAMAP)
OBIS-SEAMAP ID217
Seabirds0
Marine mammals543
Sea turtles59
Rays and sharks0
Other species0
Non spatial0
Non species47
Total649
Date, Begin1995-09-06
Date, End1995-11-07
Temporal prec.111111
Latitude20.50 - 32.24
Longitude-117.39 - -105.30
Coord. prec.2 decimal digits
PlatformBoat
Data typeAnimal sighting
EffortYES (ID: 218)
Traveled (km)13,053
Effort hours1,488
Registered2004-09-16
Updated2004-09-16
StatusPublished
Sharing policy CC-BY-NC (Minimum)
Also availalbe from iOBIS
See metadata in static HTML
See metadata in FGDC XML
See download history / statistics
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