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Burkhardt, Elke (2023): Whale sightings during POLARSTERN cruise PS133/2 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.963426

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Published: 2023-12-01 • DOI registered: 2023-12-30

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Abstract:
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 PS133/2 (Punta Arenas – Cape Town) 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.
Keyword(s):
Cetacean sightings; WALOG
Documentation:
Information for MAPS whale sighting data (2018-12-18). hdl:10013/epic.24d813e7-0158-4fc3-bc99-0f4ebb6beecc
Project(s):
Marine Mammal Perimeter Surveillance from RV Polarstern (MAPS)
Coverage:
Median Latitude: -53.700520 * Median Longitude: -37.769142 * South-bound Latitude: -54.960280 * West-bound Longitude: -70.815780 * North-bound Latitude: -39.485920 * East-bound Longitude: 6.278150
Date/Time Start: 2022-11-20T17:02:29 * Date/Time End: 2022-12-16T18:20:46
Event(s):
PS133/2-track * Latitude Start: -53.178083 * Longitude Start: -70.891813 * Latitude End: -34.248478 * Longitude End: 17.708918 * Date/Time Start: 2022-11-19T06:00:00 * Date/Time End: 2022-12-19T05:59:59 * Campaign: PS133/2 (Island Impact) * Basis: Polarstern * Method/Device: Underway cruise track measurements (CT) * Comment: Punta Arenas - Cape Town
Comment:
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.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 DATE/TIMEDate/TimeBurkhardt, ElkeGeocode
2 LATITUDELatitudeBurkhardt, ElkeGeocode
3 LONGITUDELongitudeBurkhardt, ElkeGeocode
4 Whale speciesWhaleBurkhardt, ElkeVisual observation
5 Certainty of identificationCertaintyBurkhardt, Elke
6 IndividualsInd#Burkhardt, ElkeVisual observation
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
174 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Date/Time		2 
Latitude		3 
Longitude		4 
Whale		5 
Certainty		6 
Ind [#]
2022-11-20T17:02:29-53.14943-70.81578Dolphins, unidentifieddefinite>5
2022-11-20T17:38:09-53.04320-70.63440Dolphins, unidentifieddefinite5
2022-11-21T20:41:42-53.05788-63.14433Balaenoptera physaluspossible1
2022-11-22T22:31:25-53.52600-55.69698Baleen whale, unidentifieddefinite1
2022-11-23T17:22:44-53.86215-50.16192Large whale, unidentifieddefinite1
2022-11-24T07:16:20-54.33788-46.13748Small whale, unidentifieddefinite5
2022-11-25T14:51:48-53.16595-41.23658Megaptera novaeangliaedefinite5
2022-11-25T15:07:22-53.17605-41.21220Megaptera novaeangliaedefinite2
2022-11-25T15:35:11-53.19380-41.16950Megaptera novaeangliaeprobable2
2022-11-25T17:37:30-53.27348-40.97698Megaptera novaeangliaedefinite3
2022-11-25T18:11:05-53.28963-40.84343Megaptera novaeangliaedefinite2
2022-11-25T18:15:26-53.29202-40.82322Megaptera novaeangliaepossible1
2022-11-25T18:22:03-53.29580-40.79187Megaptera novaeangliaedefinite1
2022-11-25T20:46:32-53.37717-40.11100Megaptera novaeangliaedefinite1
2022-11-25T21:55:30-53.41647-39.78113Megaptera novaeangliaepossible3
2022-11-28T17:10:12-54.40082-37.56938Megaptera novaeangliaedefinite2
2022-11-30T14:28:54-54.40160-37.56825Megaptera novaeangliaeprobable2
2022-12-01T06:47:51-53.86823-38.27715Megaptera novaeangliaedefinite5
2022-12-01T06:55:31-53.85642-38.26075Megaptera novaeangliaedefinite1
2022-12-01T12:43:15-53.80913-37.77232Megaptera novaeangliaedefinite1
2022-12-03T07:41:48-54.22330-36.39722Megaptera novaeangliaedefinite3
2022-12-05T21:11:09-54.23122-36.44202Megaptera novaeangliaedefinite1
2022-12-06T22:02:51-53.92915-36.32992Megaptera novaeangliaedefinite1
2022-12-06T22:17:11-53.96053-36.31283Megaptera novaeangliaedefinite2
2022-12-06T22:30:19-53.99383-36.29720Megaptera novaeangliaedefinite3
2022-12-07T05:38:49-54.20835-36.44312Megaptera novaeangliaeprobable2
2022-12-07T05:45:40-54.20833-36.44215Megaptera novaeangliaeprobable2
2022-12-07T07:02:40-54.20863-36.44210Megaptera novaeangliaedefinite2
2022-12-07T09:06:27-54.20847-36.44237Megaptera novaeangliaedefinite1
2022-12-07T10:59:04-54.13658-36.28550Megaptera novaeangliaedefinite2
2022-12-07T11:42:38-54.08830-36.11408Megaptera novaeangliaedefinite3
2022-12-07T12:39:40-54.00270-35.90858Large whale, unidentifieddefinite4
2022-12-07T12:48:31-53.98790-35.87640Megaptera novaeangliaedefinite>5
2022-12-07T12:52:38-53.98200-35.86402Megaptera novaeangliaedefinite2
2022-12-07T12:58:17-53.97287-35.84463Megaptera novaeangliaedefinite1
2022-12-07T13:01:45-53.96745-35.83327Megaptera novaeangliaedefinite2
2022-12-07T16:03:09-53.92460-35.82909Megaptera novaeangliaedefinite2
2022-12-07T21:35:03-54.06525-36.14230Megaptera novaeangliaepossible>5
2022-12-07T22:27:50-54.06518-36.14178Megaptera novaeangliaedefinite2
2022-12-08T05:36:47-54.79358-35.50192Balaenoptera aff. bonaerensispossible2
2022-12-08T06:05:08-54.85918-35.53877Megaptera novaeangliaeprobable2
2022-12-08T06:30:39-54.91375-35.61942Megaptera novaeangliaedefinite2
2022-12-08T06:32:44-54.91832-35.62607Megaptera novaeangliaepossible2
2022-12-08T15:04:47-54.96028-35.77195Megaptera novaeangliaedefinite>10
2022-12-08T16:11:06-54.90067-35.47912Balaenoptera physalusprobable1
2022-12-08T16:41:48-54.86852-35.34288Large whale, unidentifieddefinite4
2022-12-08T16:45:19-54.86488-35.32793Large whale, unidentifieddefinite2
2022-12-08T17:10:35-54.83958-35.22083Megaptera novaeangliaedefinite1
2022-12-08T17:52:07-54.79378-35.02660Megaptera novaeangliaedefinite3
2022-12-08T18:00:39-54.78735-34.99957Megaptera novaeangliaedefinite1
2022-12-09T06:46:53-54.04547-31.89017Megaptera novaeangliaedefinite1
2022-12-09T06:54:31-54.03870-31.86140Megaptera novaeangliaepossible1
2022-12-09T07:17:14-54.01705-31.77240Whale, unidentifieddefinite1
2022-12-09T07:43:10-53.99317-31.67263Megaptera novaeangliaedefinite4
2022-12-09T09:45:48-53.87852-31.19853Whale, unidentifieddefinite2
2022-12-09T15:10:47-53.56998-29.92612Large whale, unidentifieddefinite1
2022-12-11T18:54:03-49.94372-18.73887Whale, unidentifieddefinite1
2022-12-16T18:20:46-39.485926.27815Large whale, unidentifieddefinite1