Dataset

SWFSC Marine Mammal Survey, Vaquita 1997, Cruise 1608

OBIS-SEAMAP Open in mapper Explore occurrences

Original provider: NOAA Southwest Fisheries Science Center (SWFSC) Dataset credits: Marine Mammal and Turtle Division, Southwest Fisheries Science Center, NMFS, NOAA Abstract: The 1998 Vaquita Abudance Survey was a collaboration between the National Marine Fisheries Service and SEMARNAP’s Instituto Nacional de la Pesca (INP) of Mexico. This line-transect survey was designed to collect data to estimate the abundance of vaquita, or Gulf of California harbor porpoise. The study area was from the northern end of the Gulf of California south to about 30 degrees north latitude in waters less than 100 meters deep. This survey was conducted by the NOAA Southwest Fisheries Science Center aboard the NOAA ship David Starr Jordan for a total of 1,560 kilometers surveyed from mid-August to mid-September 1997. 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.

Citation: Moore, J. and D. Weller. 2021. SWFSC Marine Mammal Survey, Vaquita 1997, Cruise 1608. Version 1.0.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/c6484bb8.

Published: October 08, 2025 at 01:10

URL: http://ipt.env.duke.edu/resource?r=zd_1031

Dave Weller
NOAA Southwest Fisheries Science Center

628
occurrence records
23
taxa
16
species

Taxa

Missing and invalid fields

Field Missing Invalid
maximumDepthInMeters 628
100.0%
minimumDepthInMeters 628
100.0%

Quality flags

The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.

Flag Dropped Records
NO_DEPTH 628
100.0%

Measurement types

DNA derived data