Description
Original provider: NOAA Southwest Fisheries Science Center (SWFSC) Dataset credits: NOAA Southwest Fisheries Science Center (SWFSC) Abstract: This 1993 line-transect survey was designed to make abundance estimates of the northern stock of common dolphin, <i>Delphinus delphis</i>, in the eastern Pacific. This stock of dolphin is taken in the tropical tuna fishery. The index of relative abundance for this stock, computed from sightings on tuna vessels, has declined substantially in the last decade. However, because tuna vessels cover only the southern portion of the stock's range, the declines in the index may be due to a northward shift in distribution, rather than an actual decline in abundance. The 1993 survey was designed to produce the first range-wide estimates of abundance for the northern common dolphin and its recently described congener, <i>Delphinus capensis</i>. This survey was conducted by the NOAA Southwest Fisheries Science Center aboard NOAA Ships <i>McArthur</i> and <i>David Starr Jordan</i> for a combined total of approximately 32,000 kilometers surveyed from late July to early November 1993. This dataset provides the time-date and geographical coordinates, by species/stock, of all cetaceans detected during the survey, as well as the daily and intra-daily start and end points of the line-transect survey by the NOAA Ship <i>McArthur</i>.
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 652 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:
Moore, J. and D. Weller. 2021. SWFSC Marine Mammal Survey, PODS 1993, Cruise 1508. Version 2.0.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/6c53f5bc.
Rights
Researchers should respect the following rights statement:
The publisher and rights holder of this work is OBIS-SEAMAP. To the extent possible under law, the publisher has waived all rights to these data and has dedicated them to the Public Domain (CC0 1.0). Users may copy, modify, distribute and use the work, including for commercial purposes, without restriction.
GBIF Registration
This resource has been registered with GBIF, and assigned the following GBIF UUID: e7742aab-883c-49ad-bb12-ddb6dff6129e. 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; Cetaceans; Whales; Dolphins; Delphinus; Population; Abundance; Survey; Census; PODS; Occurrence
External data
The resource data is also available in other formats
| OBIS-SEAMAP Dataset Page | https://seamap.env.duke.edu/dataset/213 UTF-8 Interactive map |
|---|---|
| FGDC Metadata | https://seamap.env.duke.edu/dataset/213/fgdc UTF-8 XML |
| EML Metadata | https://seamap.env.duke.edu/dataset/213/eml UTF-8 XML |
Contacts
- Owner ●
- Originator ●
- Point Of Contact
- Primary contact
- Metadata Provider ●
- Distributor
- A328 LSRC building
Geographic Coverage
Oceans,Pacific,California Current,California,Mexico,Gulf of California
| Bounding Coordinates | South West [21.034, -130.643], North East [41.938, -106.969] |
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Taxonomic Coverage
Scientific names are based on the Integrated Taxonomic Information System (ITIS).
| Order | Cetacea (Cetaceans) |
|---|---|
| Suborder | Caniformia (Pinnipeds) |
| Family | Cheloniidae (Sea turtles), Hyperoodontidae (Beaked whales), Phocidae (Earless seals) |
| Genus | Balaenoptera (Baleen whales), Delphinus (Common dolphins), Kogia (Pygmy sperm whales), Mesoplodon (Beaked whales) |
| Species | Balaenoptera acutorostrata (Common minke whale), Balaenoptera borealis (Sei whale), Balaenoptera edeni (Eden's whale), Balaenoptera musculus (Blue whale), Balaenoptera physalus (Fin whale), Berardius bairdii (Baird's beaked whale), Callorhinus ursinus (Northern fur seal), Caretta caretta (Loggerhead sea turtle), Delphinus capensis (Long-beaked common dolphin), Delphinus delphis (Short-beaked common dolphin), Globicephala macrorhynchus (Short-finned pilot whale), Grampus griseus (Risso's dolphin), Kogia breviceps (Pygmy sperm whale), Lagenorhynchus obliquidens (Pacific white-sided dolphin), Lepidochelys olivacea (Olive ridley), Lissodelphis borealis (Northern right whale dolphin), Megaptera novaeangliae (Humpback whale), Mesoplodon densirostris (Blainville's beaked whale), Mirounga angustirostris (Northern elephant seal), Orcinus orca (Killer whale), Phocoena phocoena (Harbor porpoise), Phocoenoides dalli (Dall's porpoise), Physeter macrocephalus (Sperm whale), Stenella attenuata (Pantropical spotted dolphin), Stenella coeruleoalba (Striped dolphin), Steno bredanensis (Rough-toothed dolphin), Tursiops truncatus (Common bottlenose dolphin), Zalophus californianus (California sea lion), Ziphius cavirostris (Cuvier's beaked whale) |
| Subspecies | Stenella longirostris orientalis |
Temporal Coverage
| Start Date / End Date | 1993-07-28 / 1993-11-02 |
|---|
Project Data
No Description available
| Title | SWFSC Marine Mammal Survey, PODS 1993, Cruise 1508 |
|---|---|
| Funding | NA |
The personnel involved in the project:
- Owner
- Originator
Sampling Methods
NA
| Study Extent | NA |
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Method step description:
- NA
Collection Data
| Collection Name | zd_213 |
|---|---|
| Collection Identifier | zd_213 |
| Parent Collection Identifier | OBIS-SEAMAP |
Bibliographic Citations
- Mangels, K.F., and T. Gerrodette. 1994. Report on cetacean sightings during a marine mammal survey in the Eastern Tropical Pacific Ocean aboard the NOAA Ships McArthur and David Starr Jordan, July 28-November 6, 1993. NOAA-TM-NMFS-SWFSC-211. https://repository.library.noaa.gov/view/noaa/3357/
Additional Metadata
marine, harvested by iOBIS. SWFSC MMTD Cruise Number: 1508 Perpendicular distance will be released upon permission by the contributor. Please contact the contributor if needed. Attribute descriptions for effort data: dist: Length of the segment (km) Mode: Effort mode type (C = closing mode; P = passing mode).
| Purpose | The primary objective of the cruise was to survey the area inhabited by the northern stock of common dolphins, and to make an estimate of its absolute abundance in order to assess the impact of the dolphins killed by the United States and international yellowfin tuna purse seine fleet in the eastern tropical Pacific. |
|---|---|
| Alternative Identifiers | https://doi.org/10.82144/6c53f5bc |
| https://seamap.env.duke.edu/dataset/213 | |
| https://www.gbif.org/dataset/e7742aab-883c-49ad-bb12-ddb6dff6129e | |
| https://obis.org/dataset/39aa2775-5188-4b85-9b5a-896d7263ad03 | |
| e7742aab-883c-49ad-bb12-ddb6dff6129e | |
| https://ipt.env.duke.edu/resource?r=zd_213 |