Skip to main content
Dataset Overview | National Centers for Environmental Information (NCEI)

Cetacean and sea turtle visual observations using line-transect survey methods aboard a NOAA DeHavilland DHC-6 Twin Otter (TO) aircraft in the Gulf of Mexico, during the Gulf of Mexico Marine Assessment Program for Protected Species (GoMMAPPS survey TO18Wi) from 2018-01-18 to 2018-03-14 (NCEI Accession 0242273)

browse graphicPreview graphic
As part of the Gulf of Mexico Marine Assessment Program for Protected Species (GoMMAPPS), the Southeast Fisheries Science Center (SEFSC) conducted aerial surveys of the U.S. continental shelf waters (up to the 200-m isobath) in the Gulf of Mexico from 2018-01-18 to 2018-03-14. The survey was designed for a two-team independent visual observer approach with distance sampling to estimate abundance and characterize spatial distribution of marine mammals and sea turtles. This dataset includes marine mammal and sea turtle visual observation data and effort points with surveying conditions that can be used in abundance and density modeling per visual line-transect survey protocols. This dataset also includes marine mammal photographs used to aid in species identification.
  • Cite as: Litz, Jenny; Rappucci, Gina; Aichinger Dias, Laura; Barry, Kevin; Garrison, Lance; Mullin, Keith (2021). Cetacean and sea turtle visual observations using line-transect survey methods aboard a NOAA DeHavilland DHC-6 Twin Otter (TO) aircraft in the Gulf of Mexico, during the Gulf of Mexico Marine Assessment Program for Protected Species (GoMMAPPS survey TO18Wi) from 2018-01-18 to 2018-03-14 (NCEI Accession 0242273). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/5mer-zp93. Accessed [date].
gov.noaa.nodc:0242273
Full Text · XML
Download Data
  • HTTPS (download)
    Navigate directly to the URL for data access and direct download.
  • FTP (download)
    These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP).
Distribution Formats
  • CSV
  • Word
  • JPEG
  • PDF
Ordering Instructions Contact NCEI for other distribution options and instructions.
Distributor NOAA National Centers for Environmental Information
+1-301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Time Period 2018-01-18 to 2018-03-14
Spatial Bounding Box Coordinates
West: -96.93520934
East: -82.44092755
South: 27.658528425
North: 30.412986948
Spatial Coverage Map
General Documentation
Associated Resources
  • Cetacean, sea turtle, and seabird visual observations using line-transect survey methods from ships and aircraft during the Gulf of Mexico Marine Assessment Program for Protected Species (GOMMAPPS) surveys from 2017 to 2020
    • NCEI Collection
      Navigate directly to the URL for data access and direct download.
  • GoMMAPPS Winter aerial abundance survey during January – March 2018: Summary Report
  • Project Information
  • Program Information
  • Southeast Fisheries Science Center, 2021: Cetacean and sea turtle visual observations using line-transect survey methods aboard a NOAA DeHavilland DHC-6 Twin Otter (TO) aircraft in the Gulf of Mexico, during the Gulf of Mexico Marine Assessment Program for Protected Species (GoMMAPPS survey TO18Wi) from 2018-01-18 to 2018-03-14 (NCEI Accession 0242273), https://www.fisheries.noaa.gov/inport/item/65635.
    • Parent ID (indicates this dataset is related to other data):
    • gov.noaa.nodc:GOMMAPPS
Publication Dates
  • publication: 2021-10-27
  • revision: 2021-11-22
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed
Supplemental Information
In this accession, NCEI has archived multiple versions of these data. The latest (and best) version of these data has the largest version number. Submission Package ID: M0476T
Purpose The primary goal was to collect data on the distribution and abundance of marine mammals and sea turtles in the U.S. continental shelf waters of the Gulf of Mexico (GOM) using two independent visual survey teams.
Use Limitations
  • accessLevel: Public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Dataset Citation
  • Cite as: Litz, Jenny; Rappucci, Gina; Aichinger Dias, Laura; Barry, Kevin; Garrison, Lance; Mullin, Keith (2021). Cetacean and sea turtle visual observations using line-transect survey methods aboard a NOAA DeHavilland DHC-6 Twin Otter (TO) aircraft in the Gulf of Mexico, during the Gulf of Mexico Marine Assessment Program for Protected Species (GoMMAPPS survey TO18Wi) from 2018-01-18 to 2018-03-14 (NCEI Accession 0242273). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/5mer-zp93. Accessed [date].
Cited Authors
Principal Investigators
Collaborators
Contributors
Resource Providers
Points of Contact
Publishers
Acknowledgments
  • Related Funding Agency: US DOC; NOAA; NMFS; Southeast Fisheries Science Center
  • Related Funding Agency: US DOI; Bureau of Ocean Energy Management
  • This study was funded by the U.S. Department of the Interior, Bureau of Ocean Energy Management through Interagency Agreement M17PG00013 with the U.S. Department of Commerce, National Oceanic and Atmospheric Administration (NOAA).
  • This research was carried out [in part] under the auspices of the Cooperative Institute for Marine and Atmospheric Studies (CIMAS), a Cooperative Institute of the University of Miami and the National Oceanic and Atmospheric Administration, cooperative agreements NA15OAR4320064 and NA20OAR4320472.
  • Thank you to the marine mammal observers and crew who participated in the SEFSC surveys.
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Global Change Master Directory (GCMD) Science Keywords Provider Keywords Marine Mammal Common Name
  • Atlantic spotted dolphin
  • Common bottlenose dolphin
  • West Indian manatee
Provider Keywords Marine Mammal Scientific Name
  • Delphinidae
  • Stenella frontalis
  • Trichechus manatus
  • Tursiops truncatus
Provider Keywords Non-Marine Mammal Occurrences
  • Fish; Hammerhead Shark
  • Fish; Manta Ray
  • Fish; Unid. Ray
  • Fish; Unid. Shark
  • Turtles; Green Turtle
  • Turtles; Hardshell
  • Turtles; Kemp's Ridley
  • Turtles; Leatherback
  • Turtles; Loggerhead
Provider Observation Categories
  • species distribution
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS Global Change Master Directory (GCMD) Data Center Keywords
Platform keywords Global Change Master Directory (GCMD) Platform Keywords Provider Platform Names
  • DeHavilland DHC-6 Twin Otter aircraft
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords
Project keywords NODC PROJECT NAMES THESAURUS Global Change Master Directory (GCMD) Project Keywords Provider Project Names
  • University of Miami’s Cooperative Institute for Marine and Atmospheric Studies (CIMAS)
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Litz, Jenny; Rappucci, Gina; Aichinger Dias, Laura; Barry, Kevin; Garrison, Lance; Mullin, Keith (2021). Cetacean and sea turtle visual observations using line-transect survey methods aboard a NOAA DeHavilland DHC-6 Twin Otter (TO) aircraft in the Gulf of Mexico, during the Gulf of Mexico Marine Assessment Program for Protected Species (GoMMAPPS survey TO18Wi) from 2018-01-18 to 2018-03-14 (NCEI Accession 0242273). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/5mer-zp93. Accessed [date].
  • All marine mammal data and photographs were collected under the National Marine Fisheries Service (NMFS), the Marine Mammal Protection Act (MMPA) and Endangered Species Act (ESA) permit number: NMFS ESA/MMPA Permit No. 14450. If a photo displaying a marine mammal is used, please include the permit number in the captions and acknowledge NOAA Fisheries.
Access Constraints
  • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Fees
  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: dataset
Processing Steps
  • 2021-10-27T06:19:01Z - NCEI Accession 0242273 v1.1 was published.
  • 2021-11-22T21:31:27Z - NCEI Accession 0242273 was revised and v2.2 was published.
    Rationale: Updates were received for this dataset. These updates were copied into the data/0-data/ directory of this accession. These updates may provide additional files or replace obsolete files. This version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Parameter or Variable: CETACEANS, VISUAL OBSERVATIONS (measured); Units: NA; Observation Category: In Situ/Laboratory Instruments, SPECIES DISTRIBUTION MODELS, POPULATION ABUNDANCE; Sampling Instrument: AIRCRAFT, LINE-TRANSECT SURVEY, DISTANCE SAMPLING; Sampling and Analyzing Method: The goal of the survey was to conduct line-transect surveys using the distance sampling approach to estimate the abundance and spatial distribution of marine mammals and sea turtles in waters over the continental shelf in the U.S. Gulf of Mexico. A two-team independent observer approach was used to correct for perception bias in resulting abundance estimates. Survey tracklines were oriented perpendicular to the shoreline and latitudinally spaced 20 km apart.; Data Quality Method: Data auditing consisted of making corrections based on error log notes from the field, plotting trackline points to identify errors made when recording effort status, and verifying sighting data based on data sheets from the field..
Acquisition Information (collection)
Instrument
  • camera
  • Distance Sampling
  • inclinometer
  • line transect sampling
  • photograph
Last Modified: 2024-03-08T13:16:03Z
For questions about the information on this page, please email: ncei.info@noaa.gov