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GOALS Vessel Surveys June - July 2013

Dataset homepage

Citation

Ampela K, Miller-Francisco G, OBIS-SEAMAP (2021). GOALS Vessel Surveys June - July 2013. OBIS-SEAMAP. Occurrence dataset https://doi.org/10.15468/vh5hxv accessed via GBIF.org on 2023-09-24.

Description

Original provider: HDR Environmental, Operations and Construction, Inc. Dataset credits: The U.S. Navy Marine Species Monitoring Program Abstract: Features in this feature class represent animal sightings that occurred during a line-transect vessel survey ("GOALSII") for marine mammals. Real-time acoustic monitoring and recording effort was also conducted using a towed-hydrophone array and sonobuoys around-the-clock to detect and localize vocally active cetaceans. The survey was conducted from 23 June to 18 July 2013 in the U.S. Navy's Temporary Maritime Activities Area in the central GoA, east of Kodiak Island. Work was performed under HDR task order TO 22 (IDIQ contract award N62470-10-D-3011, NAVFAC LANT). There are some discrepancies between the sighting totals in the GOALS II project report and this GIS dataset. For example, the report lists 91 humpback whale sightings (295 count) on-effort, and 15 sightings (36 count) off-effort, while this dataset contains 92 sightings (296 count) on-effort, and 19 sightings (250 count) off-effort. The reason for this discrepancy is that a large non-cohesive group of humpbacks was encountered and individual perpendicular distances could not be estimated for each of the subgroups. The first approach was to stay on effort and complete a “total count” estimate for whales in a specific quadrant until the ship had gone through the majority of the animals. Once completed, it was agreed that perpendicular estimation was needed for every subgroup of whales and the ship altered course and reran the trackline in the opposite direction for observers to get position fixes on as many of the animals/subgroups as possible. On the second pass, the density of whales was not as high and thus the numbers may have differed when compared to the first pass that was ultimately adjusted to be an “off-effort” sighting. Minor discrepancies also exist in sighting counts for other species, in most cases this is the result of how resightings were recorded (instances where the same animal group was observed more than once).

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. Berardius bairdii
    common name: Baird's Beaked Whale rank: species
  2. Balaenoptera musculus
    common name: Blue Whale rank: species
  3. Ziphius cavirostris
    common name: Cuvier's Beaked Whale rank: species
  4. Phocoenoides dalli
    common name: Dall's Porpoise rank: species
  5. Mirounga angustirostris
    common name: Northern Elephant Seal rank: species
  6. Balaenoptera
    common name: baleen whales rank: genus
  7. Balaenoptera physalus
    common name: Fin Whale rank: species
  8. Eschrichtius robustus
    common name: Gray Whale rank: species
  9. Phocoena phocoena
    common name: Harbor Porpoise rank: species
  10. Megaptera novaeangliae
    common name: Humpback Whale rank: species
  11. Orcinus orca
    common name: Killer Whale rank: species
  12. Phoebastria immutabilis
    common name: Laysan Albatross rank: species
  13. Balaenoptera acutorostrata
    common name: Minke Whale rank: species
  14. Callorhinus ursinus
    common name: Northern Fur Seal rank: species
  15. Phoebastria albatrus
    common name: Short-tailed Albatross rank: species
  16. Physeter macrocephalus
    common name: Sperm Whale rank: species
  17. Odontoceti
    common name: toothed whales rank: suborder
  18. Delphinidae
    common name: dolphins rank: family
  19. Cetacea
    common name: cetaceans rank: order
  20. Caniformia
    common name: pinnipeds rank: suborder
  21. Phocoenidae
    common name: porpoises rank: family
  22. Cetacea
    common name: cetaceans rank: order

Geographic Coverages

Pacific

Bibliographic Citations

Contacts

Kristen Ampela
originator
position: Primary contact
HDR Environmental, Operations and Construction, Inc.
email: Kristen.Ampela@hdrinc.com
Grant Miller-Francisco
originator
position: Secondary contact
HDR Environmental, Operations and Construction, Inc.
email: Grant.Francisco@hdrinc.com
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
Kristen Ampela
owner
position: Primary contact
HDR Environmental, Operations and Construction, Inc.
email: Kristen.Ampela@hdrinc.com
Grant Miller-Francisco
originator
position: Secondary contact
HDR Environmental, Operations and Construction, Inc.
email: Grant.Francisco@hdrinc.com
Kristen Ampela
administrative point of contact
position: Primary contact
HDR Environmental, Operations and Construction, Inc.
email: Kristen.Ampela@hdrinc.com
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