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).
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 981 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:
Ampela, K. and G. Miller-Francisco. 2017. GOALS Vessel Surveys June - July 2013. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/1165) on yyyy-mm-dd.
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: 86214182-a35a-42a4-b810-6e8a45d3e2a0. OBIS-SEAMAP publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Ocean Biodiversity Information System.
Keywords
Occurrence,Gulf of Alaska Temporary Maritime Activities Area,Marine Animal Survey,Marine Biology,Marine mammals,Visual Sighting,Aircraft; Observation; Occurrence
External data
The resource data is also available in other formats
| OBIS-SEAMAP Dataset Page | http://seamap.env.duke.edu/dataset/1165 UTF-8 Interactive map |
|---|---|
| FGDC Metadata | http://seamap.env.duke.edu/dataset/1165/xml UTF-8 XML |
Contacts
- Owner ●
- Originator ●
- Point Of Contact
- Originator
- Metadata Provider ●
- Distributor
Geographic Coverage
Pacific
| Bounding Coordinates | South West [55.675, -152.613], North East [59.526, -135.551] |
|---|
Taxonomic Coverage
Scientific names are based on the Integrated Taxonomic Information System (ITIS).
| Order | Cetacea (cetaceans), Cetacea (cetaceans) |
|---|---|
| Suborder | Odontoceti (toothed whales), Caniformia (pinnipeds) |
| Family | Delphinidae (dolphins), Phocoenidae (porpoises) |
| Genus | Balaenoptera (baleen whales) |
| Species | Berardius bairdii (Baird's Beaked Whale), Balaenoptera musculus (Blue Whale), Ziphius cavirostris (Cuvier's Beaked Whale), Phocoenoides dalli (Dall's Porpoise), Mirounga angustirostris (Northern Elephant Seal), Balaenoptera physalus (Fin Whale), Eschrichtius robustus (Gray Whale), Phocoena phocoena (Harbor Porpoise), Megaptera novaeangliae (Humpback Whale), Orcinus orca (Killer Whale), Phoebastria immutabilis (Laysan Albatross), Balaenoptera acutorostrata (Minke Whale), Callorhinus ursinus (Northern Fur Seal), Phoebastria albatrus (Short-tailed Albatross), Physeter macrocephalus (Sperm Whale) |
Temporal Coverage
| Start Date / End Date | 2013-06-23 / 2013-07-18 |
|---|
Project Data
No Description available
| Title | The U.S. Navy Marine Species Monitoring Program |
|---|---|
| Funding | The U.S. Navy Marine Species Monitoring Program |
The personnel involved in the project:
- Owner
- Originator
Sampling Methods
NA
| Study Extent | NA |
|---|
Method step description:
- NA
Collection Data
| Collection Name | zd_1165 |
|---|---|
| Collection Identifier | zd_1165 |
| Parent Collection Identifier | OBIS-SEAMAP |
Additional Metadata
marine, harvested by iOBIS
| Purpose | Not available |
|---|---|
| Alternative Identifiers | http://ipt.env.duke.edu/resource?r=zd_1165 |