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Mingan Island Cetacean Study 84-07

Dataset homepage

Citation

Delarue, J. 2014. Mingan Island Cetacean Study 84-07. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/460) on yyyy-mm-dd. https://doi.org/10.15468/uc3weh accessed via GBIF.org on 2025-05-22.

Description

Original provider: Richard Sears, Mingan Island Cetacean Study Dataset credits: Richard Sears, Mingan Island Cetacean Study Abstract: The sightings contained in this dataset were obtained during surveys designed to photo-identify blue whales in the Sea of Cortez during their peak abundance in February and March. The surveys were conducted between 1984 and 2007 from 25' fiberglass boats in sea state less than 3-4 and designed to maximize the number of blue whale IDs. Although focusing primarily on the areas where blue whales are most commonly sighted, they also covered most of the area accessible by boat during a day trip at least once per field season. Any marine mammal sighting was recorded using cross-bearings from 1984 to 1991 and using GPS from 1992 on. Unusual bird and fish sightings were also recorded. Supplemental information: [2015-03-24] A few records had a wrong animal count of zero. The value is replaced with a blank representing species presence only. [2014-04-16] Species identification of Kogia simus (ITIS TSN: 612590) was corrected to Kogia sima (180492). There were 10 sightings of this species. The sightings of Balaenoptera edeni were recognized as Bryde's whale by the data provider. The ITIS taxonomy database gives it the common name of Eden's whale. Thus, in our system it shows Eden's whale instead of Bryde's whale as a common name. There may seem to be duplicated records in the dataset. However, records are different, near-by sightings (within 100-200 m) recorded while the researchers were conducting photo-ID activities and for which an exact position could not be obtained. Thus, their positions were approximated as that of the animal/group the researchers were working with at that time. The records without coordinates were removed.

Purpose

Not available

Sampling Description

Study Extent

NA

Sampling

NA

Method steps

  1. NA

Additional info

marine, harvested by iOBIS

Taxonomic Coverages

Scientific names are based on the Integrated Taxonomic Information System (ITIS).
  1. Balaenoptera edeni
    common name: Eden's whale rank: species
  2. Balaenoptera musculus
    common name: Blue Whale rank: species
  3. Balaenoptera physalus
    common name: Fin Whale rank: species
  4. Cyanea capillata
    common name: lion's mane rank: species
  5. Delphinus delphis
    common name: Short-beaked Common Dolphin rank: species
  6. Eschrichtius robustus
    common name: Gray Whale rank: species
  7. Globicephala macrorhynchus
    common name: Short-finned Pilot Whale rank: species
  8. Globicephala melas
    common name: Long-finned Pilot Whale rank: species
  9. Haematopus palliatus
    common name: American Oystercatcher rank: species
  10. Kogia breviceps
    common name: Pygmy Sperm Whale rank: species
  11. Kogia sima
    common name: Dwarf Sperm Whale rank: species
  12. Larus heermanni
    common name: Heermann's Gull rank: species
  13. Larus livens
    common name: Yellow-footed Gull rank: species
  14. Lagenorhynchus obliquidens
    common name: Pacific White-sided Dolphin rank: species
  15. Manta birostris
    common name: Atlantic manta rank: species
  16. Megaptera novaeangliae
    common name: Humpback Whale rank: species
  17. Oceanodroma melania
    common name: Black Storm Petrel rank: species
  18. Orcinus orca
    common name: Killer Whale rank: species
  19. Phaethon lepturus
    common name: White-tailed Tropicbird rank: species
  20. Pseudorca crassidens
    common name: False Killer Whale rank: species
  21. Pandion haliaetus
    common name: Osprey rank: species
  22. Physeter macrocephalus
    common name: Sperm Whale rank: species
  23. Pelecanus occidentalis
    common name: Brown Pelican rank: species
  24. Sula leucogaster
    common name: Brown Booby rank: species
  25. Sula nebouxii
    common name: Blue-footed Booby rank: species
  26. Sphyrna
    common name: bonnethead sharks rank: genus
  27. Tursiops truncatus
    common name: Common Bottlenose Dolphin rank: species
  28. Balaenoptera
    common name: baleen whales rank: genus
  29. Delphinidae
    common name: dolphins rank: family
  30. Cheloniidae
    common name: Sea Turtles rank: family
  31. Zalophus californianus
    common name: California Sea Lion rank: species

Geographic Coverages

Sea of Cortez - Loreto

Bibliographic Citations

Contacts

Julien Delarue
originator
position: Primary contact
Allied Whale, College of the Atlantic
email: jdelarue@coa.edu
OBIS-SEAMAP
metadata author
Marine Geospatial Ecology Lab, Duke University
A328 LSRC building
Durham
27708
NC
US
email: seamap-contact@duke.edu
homepage: http://seamap.env.duke.edu
OBIS-SEAMAP
distributor
Marine Geospatial Ecology Lab, Duke University
A328 LSRC building
Durham
27708
NC
US
email: seamap-contact@duke.edu
homepage: http://seamap.env.duke.edu
Julien Delarue
owner
position: Primary contact
Allied Whale, College of the Atlantic
email: jdelarue@coa.edu
Julien Delarue
administrative point of contact
position: Primary contact
Allied Whale, College of the Atlantic
email: jdelarue@coa.edu
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