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
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Contacts
Role | Name | Organization | |
Primary contact |
Jeffrey Moore |
Southwest Fisheries Science Center, NOAA |
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Secondary contact |
Dave Weller |
NOAA Southwest Fisheries Science Center |
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Data entry |
Benjamin Best |
Duke University |
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Citation
Barlow, J. 2004. SWFSC Marine Mammal Survey, CADDIS 1995, Cruise 1601. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/217) on yyyy-mm-dd. Halpin, P.N., A.J. Read, E. Fujioka, B.D. Best, B. Donnelly, L.J. Hazen, C. Kot, K. Urian, E. LaBrecque, A. Dimatteo, J. Cleary, C. Good, L.B. Crowder, and K.D. Hyrenbach. 2009. OBIS-SEAMAP: The world data center for marine mammal, sea bird, and sea turtle distributions. Oceanography. 22(2):104-115.
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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.
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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.
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Supplemental information
N/A
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References
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Attributes
Overview
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 |
dataset | definition not provided |
lineno | Line No. |
cruise | Cruise |
date | Date of the sighting |
time | Time of the sighting at local time zone |
sightno | Sighting number |
spcode | Species code by contributor |
scientific | Scientific name |
common | Common name |
tsn | Taxonomic Serial Number added by OBIS-SEAMAP |
latitude | Latitude in decimal degrees |
longitude | Longitude in decimal degrees |
school | definition not provided |
excluded | definition not provided |
geom | Geometry field added by OBIS-SEAMAP |
oid | Unique ID number (generated by SEAMAP) |
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OBIS-SEAMAP ID | 217 |
Seabirds | 0 |
Marine mammals | 543 |
Sea turtles | 59 |
Rays and sharks | 0 |
Other species | 0 |
Non spatial | 0 |
Non species | 47 |
Total | 649 |
Date, Begin | 1995-09-06 |
Date, End | 1995-11-07 |
Temporal prec. | 111111 |
Latitude | 20.50 - 32.24 |
Longitude | -117.39 - -105.30 |
Coord. prec. | 2 decimal digits |
Platform | Boat |
Data type | Animal sighting |
Effort | YES (ID: 218) |
if ($show_effort_stat) {
?>
Traveled (km) | 13,053 |
Effort hours | 1,488 |
}
if ($sources != null and $sources != "" and $dataset_id != 427) { // Do not show ESAS
?>
Contr. through | |
}
?>
Registered | 2004-09-16 |
Updated | 2004-09-16 |
Status | Published |
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 |
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