Mingan Island Cetacean Study 84-07

Julien Delarue

doi:10.15468/uc3weh

Mingan Island Cetacean Study 84-07

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

NA

Additional info

marine, harvested by iOBIS

Taxonomic Coverages

Scientific names are based on the Integrated Taxonomic Information System (ITIS).

Balaenoptera edeni
common name: Eden's whale rank: species
Balaenoptera musculus
common name: Blue Whale rank: species
Balaenoptera physalus
common name: Fin Whale rank: species
Cyanea capillata
common name: lion's mane rank: species
Delphinus delphis
common name: Short-beaked Common Dolphin rank: species
Eschrichtius robustus
common name: Gray Whale rank: species
Globicephala macrorhynchus
common name: Short-finned Pilot Whale rank: species
Globicephala melas
common name: Long-finned Pilot Whale rank: species
Haematopus palliatus
common name: American Oystercatcher rank: species
Kogia breviceps
common name: Pygmy Sperm Whale rank: species
Kogia sima
common name: Dwarf Sperm Whale rank: species
Larus heermanni
common name: Heermann's Gull rank: species
Larus livens
common name: Yellow-footed Gull rank: species
Lagenorhynchus obliquidens
common name: Pacific White-sided Dolphin rank: species
Manta birostris
common name: Atlantic manta rank: species
Megaptera novaeangliae
common name: Humpback Whale rank: species
Oceanodroma melania
common name: Black Storm Petrel rank: species
Orcinus orca
common name: Killer Whale rank: species
Phaethon lepturus
common name: White-tailed Tropicbird rank: species
Pseudorca crassidens
common name: False Killer Whale rank: species
Pandion haliaetus
common name: Osprey rank: species
Physeter macrocephalus
common name: Sperm Whale rank: species
Pelecanus occidentalis
common name: Brown Pelican rank: species
Sula leucogaster
common name: Brown Booby rank: species
Sula nebouxii
common name: Blue-footed Booby rank: species
Sphyrna
common name: bonnethead sharks rank: genus
Tursiops truncatus
common name: Common Bottlenose Dolphin rank: species
Balaenoptera
common name: baleen whales rank: genus
Delphinidae
common name: dolphins rank: family
Cheloniidae
common name: Sea Turtles rank: family
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