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SWFSC Marine Mammal Survey, CADDIS 1995, Cruise 1601
Citation
Barlow, Jay, Karin A. Forney, A.V. Saunder, J. Urban-Ramirez. 1997. A report of cetacean acoustic detection and dive interval studies (CADDIS) conducted in the southern Gulf of California, 1995. NOAA-TM-NMFS-SWFSC-250
Contact: Barlow, Jay

Access data
Archived data
Availability: Creative Commons License This dataset is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Description
Data of acoustic detection and dive interval of cetacean in the southern Gulf of California to improve abundance estimates of long-diving whales (1995). more

This study 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.

Scope
Themes:
Biology > Mammals, Biology > Reptiles
Keywords:
Marine, I, Pacific, Cetacea, Testudines

Geographical coverage
I, Pacific [Marine Regions]

Temporal coverage
6 September 1995 - 7 November 1995

Taxonomic coverage
Cetacea [WoRMS]
Testudines [WoRMS]

Contributors
National Oceanic and Atmospheric Administration; Fisheries Service; Southwest Fisheries Science Center (SWFSC), moredata owner

Related datasets
Published in:
OBIS-SEAMAP: Spatial Ecological Analysis of Megavertebrate Populations, more

Publication
Based on this dataset:
Barlow, J. et al. (1997). A report of cetacean acoustic detection and dive interval studies (CADDIS) conducted in the southern Gulf of California, 1995. NOAA Technical Memorandum, 250. National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Southwest Fisheries Center: California. 10 + tables + figures + appendices pp., more

Dataset status: Completed
Data type: Data
Data origin: Research
Metadatarecord created: 2012-11-14
Information last updated: 2015-04-13
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