de.pangaea.dataset993399 und dataset PANGAEA

info@pangaea.de

https://www.pangaea.de/ information pointOfContact 2026-04-01T11:22:54Z https://doi.pangaea.de/10.1594/PANGAEA.993399 2026-04-01T11:22:52 publication Burkhardt, Elke

Elke.Burkhardt@awi.de

https://orcid.org/0000-0002-5128-4176 information author PANGAEA

info@pangaea.de

https://www.pangaea.de/ information publisher tableDigital Data on whale distribution and abundance in the polar oceans is rather sparse, as implementing the standard surveying method, line-transect surveys, is challenging and costly. To overcome this problem, we initiated a program to electronically log all opportunistic cetacean sightings during all Polarstern expeditions through the nautical officer on watch. Opportunistic (visual) sightings by naked eye were logged during Polarstern Cruise PS122/3 (Arctic Ocean Drift) by the nautical officer on duty using a customized Software package (WALOG, WhAleLOGger) installed on a touch screen laptop located on the ship's bridge. Species were identified by naked eye or handheld binoculars (7x50) to the lowest possible taxonomical level and assigned a "certainty" level of identification. The number of animals were counted if possible or estimated for larger groups. Whenever identification to species level was not possible, the next identifiable taxonomical category was assigned. Information on sighting position, date and time are automatically transferred from the ship's DAVIS-Ship System (https://dship.awi.de/) to the WALOG software at the time of logging. Photographs were taken, if possible, for retrospective analysis. All data of acquired sightings were retrospectively validated by a marine biologist and converted to a standard format. To this end, plausibility of sighting time, location, standardization of species names, eventual comments added at the time of sighting, as well as additional information such as photographs (if available) were checked either to verify or improve species identification. Datasets are used in species distribution modelling and to inform interested parties about occurrences. completed Burkhardt, Elke

Elke.Burkhardt@awi.de

https://orcid.org/0000-0002-5128-4176 information principalInvestigator Cetacean sightings WALOG theme 1995-01-01 creation PANGAEA

info@pangaea.de

https://www.pangaea.de/ information pointOfContact MAPS Marine Mammal Perimeter Surveillance from RV Polarstern MOSAiC Multidisciplinary drifting Observatory for the Study of Arctic Climate theme 1995-01-01 creation PANGAEA

info@pangaea.de

https://www.pangaea.de/ information pointOfContact copyright copyright CC-BY-4.0: Creative Commons Attribution 4.0 International textTable und geoscientificInformation 15.624074 55.585572 78.234121 88.591064 2020-02-24T09:20:00 2020-06-04T06:29:59 Date/Time is given in UTC. Certainty of identification: definite if observer clearly identified the species. The number of individuals is binned according to the options given in the data acquisition software: 1, 2, 3, less equal 5, less equal 10, greater than 10, greater than 20. More precise values may exist, due to observer comments. Data on visual cetacean sightings are collected systematically during all Polarstern expeditions by the nautical officer on duty, rendering WALOG to be on effort continuously. To log sightings, nautical officers are provided with the customized Software package (WALOG, WhAleLOGger) installed on a touch screen laptop located on the ship's bridge. During Polarstern expedition PS122/3 WALOG was on effort, but no sightings were logged, i.e. a null sample. DATE/TIME thematicClassification start LATITUDE thematicClassification start LONGITUDE thematicClassification start DATE/TIME thematicClassification end LATITUDE thematicClassification end LONGITUDE thematicClassification end Individuals physicalMeasurement Visual inspection # # Comment thematicClassification text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.993399?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: PS122/3-track * LATITUDE START: 88.591064 * LONGITUDE START: 55.585572 * LATITUDE END: 78.234121 * LONGITUDE END: 15.624074 * DATE/TIME START: 2020-02-24T09:00:00 * DATE/TIME END: 2020-06-04T06:30:00 * LOCATION: Arctic Ocean * CAMPAIGN: PS122/3 * BASIS: Polarstern * METHOD/DEVICE: Underway cruise track measurements 2020-02-24T09:00:00 Documentation hdl:10013/epic.00a6eec8-6a93-40d5-a628-94c3d4c0efda documentDigital