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.
Data Records
The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 4,899 records.
This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.
Versions
The table below shows only published versions of the resource that are publicly accessible.
How to cite
Researchers should cite this work as follows:
Delarue, J. 2014. Mingan Island Cetacean Study 84-07. Version 1.4.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/1c988d78.
Rights
Researchers should respect the following rights statement:
The publisher and rights holder of this work is OBIS-SEAMAP. This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.
GBIF Registration
This resource has been registered with GBIF, and assigned the following GBIF UUID: 85bb9817-fe01-4f6d-8ad1-3b861a7cec61. OBIS-SEAMAP publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Ocean Biodiversity Information System.
Keywords
Occurrence; Observation; Marine Biology; Visual sighting; Vessels; Sightings; Blue whale - Marine mammals - sightings; Occurrence
External data
The resource data is also available in other formats
| OBIS-SEAMAP Dataset Page | https://seamap.env.duke.edu/dataset/460 UTF-8 Interactive map |
|---|---|
| FGDC Metadata | https://seamap.env.duke.edu/dataset/460/fgdc UTF-8 XML |
| EML Metadata | https://seamap.env.duke.edu/dataset/460/eml UTF-8 XML |
Contacts
- Owner ●
- Originator ●
- Point Of Contact
- Primary contact
- Metadata Provider ●
- Distributor
- A328 LSRC building
Geographic Coverage
Oceans,Sea of Cortez - Loreto
| Bounding Coordinates | South West [22.913, -112.35], North East [26.921, -106.487] |
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Taxonomic Coverage
Scientific names are based on the Integrated Taxonomic Information System (ITIS).
| Family | Cheloniidae (Sea turtles), Delphinidae (Dolphins) |
|---|---|
| Genus | Balaenoptera (Baleen whales), Sphyrna (Bonnethead sharks) |
| Species | Balaenoptera edeni (Eden's whale), Balaenoptera musculus (Blue whale), Balaenoptera physalus (Fin whale), Cyanea capillata (Lion's mane), Delphinus delphis (Short-beaked common dolphin), Eschrichtius robustus (Gray whale), Globicephala macrorhynchus (Short-finned pilot whale), Globicephala melas (Long-finned pilot whale), Haematopus palliatus (American oystercatcher), Kogia breviceps (Pygmy sperm whale), Kogia sima (Dwarf sperm whale), Lagenorhynchus obliquidens (Pacific white-sided dolphin), Larus heermanni (Heermann's gull), Larus livens (Yellow-footed gull), Manta birostris (Atlantic manta), Megaptera novaeangliae (Humpback whale), Oceanodroma melania (Black storm petrel), Orcinus orca (Killer whale), Pandion haliaetus (Osprey), Pelecanus occidentalis (Brown pelican), Phaethon lepturus (White-tailed tropicbird), Physeter macrocephalus (Sperm whale), Pseudorca crassidens (False killer whale), Sula leucogaster (Brown booby), Sula nebouxii (Blue-footed booby), Tursiops truncatus (Common bottlenose dolphin), Zalophus californianus (California sea lion) |
Temporal Coverage
| Start Date / End Date | 1984-03-24 / 2007-03-26 |
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Project Data
No Description available
| Title | Mingan Island Cetacean Study 84-07 |
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| Funding | NA |
The personnel involved in the project:
- Owner
Sampling Methods
NA
| Study Extent | NA |
|---|
Method step description:
- NA
Collection Data
| Collection Name | zd_460 |
|---|---|
| Collection Identifier | zd_460 |
| Parent Collection Identifier | OBIS-SEAMAP |
Additional Metadata
marine, harvested by iOBIS. 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 | |
|---|---|
| Alternative Identifiers | https://doi.org/10.82144/1c988d78 |
| https://seamap.env.duke.edu/dataset/460 | |
| https://www.gbif.org/dataset/85bb9817-fe01-4f6d-8ad1-3b861a7cec61 | |
| https://obis.org/dataset/1d063315-5a15-4d9d-9a2f-b62ba744198b | |
| 85bb9817-fe01-4f6d-8ad1-3b861a7cec61 | |
| https://ipt.env.duke.edu/resource?r=zd_460 |