Whale sightings during POLARSTERN cruise PS124
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 Polar...
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2021
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.939124 https://doi.org/10.1594/PANGAEA.939124 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.939124 2023-05-15T15:42:15+02:00 Whale sightings during POLARSTERN cruise PS124 Burkhardt, Elke MEDIAN LATITUDE: -70.993531 * MEDIAN LONGITUDE: -33.775542 * SOUTH-BOUND LATITUDE: -76.964883 * WEST-BOUND LONGITUDE: -52.146100 * NORTH-BOUND LATITUDE: -60.448650 * EAST-BOUND LONGITUDE: -23.759683 * DATE/TIME START: 2021-02-05T20:40:13 * DATE/TIME END: 2021-03-27T20:39:20 2021-12-08 text/tab-separated-values, 192 data points https://doi.pangaea.de/10.1594/PANGAEA.939124 https://doi.org/10.1594/PANGAEA.939124 en eng PANGAEA Hellmer, Hartmut H; Holtappels, Moritz (2021): The Expedition PS124 of the Research Vessel POLARSTERN to the southern Weddell Sea in 2021. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 755, 237 pp, https://doi.org/10.48433/BzPM_0755_2021 Information for MAPS whale sighting data (2018-12-18) (URI: hdl:10013/epic.24d813e7-0158-4fc3-bc99-0f4ebb6beecc) https://doi.pangaea.de/10.1594/PANGAEA.939124 https://doi.org/10.1594/PANGAEA.939124 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Certainty of identification Cetacean sightings CT DATE/TIME GPF 19-2_039 LATITUDE LONGITUDE MAPS Marine Mammal Perimeter Surveillance from RV Polarstern Number of individuals Polarstern PS124 PS124-track South Atlantic Underway cruise track measurements Visual observation WALOG Whale species Dataset 2021 ftpangaea https://doi.org/10.1594/PANGAEA.939124 https://doi.org/10.48433/BzPM_0755_2021 2023-01-20T09:15:35Z 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 PS124 (Port Stanley – Port Stanley) 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. Dataset Berichte zur Polar- und Meeresforschung Reports on Polar and Marine Research PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-52.146100,-23.759683,-60.448650,-76.964883) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Certainty of identification Cetacean sightings CT DATE/TIME GPF 19-2_039 LATITUDE LONGITUDE MAPS Marine Mammal Perimeter Surveillance from RV Polarstern Number of individuals Polarstern PS124 PS124-track South Atlantic Underway cruise track measurements Visual observation WALOG Whale species |
spellingShingle |
Certainty of identification Cetacean sightings CT DATE/TIME GPF 19-2_039 LATITUDE LONGITUDE MAPS Marine Mammal Perimeter Surveillance from RV Polarstern Number of individuals Polarstern PS124 PS124-track South Atlantic Underway cruise track measurements Visual observation WALOG Whale species Burkhardt, Elke Whale sightings during POLARSTERN cruise PS124 |
topic_facet |
Certainty of identification Cetacean sightings CT DATE/TIME GPF 19-2_039 LATITUDE LONGITUDE MAPS Marine Mammal Perimeter Surveillance from RV Polarstern Number of individuals Polarstern PS124 PS124-track South Atlantic Underway cruise track measurements Visual observation WALOG Whale species |
description |
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 PS124 (Port Stanley – Port Stanley) 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. |
format |
Dataset |
author |
Burkhardt, Elke |
author_facet |
Burkhardt, Elke |
author_sort |
Burkhardt, Elke |
title |
Whale sightings during POLARSTERN cruise PS124 |
title_short |
Whale sightings during POLARSTERN cruise PS124 |
title_full |
Whale sightings during POLARSTERN cruise PS124 |
title_fullStr |
Whale sightings during POLARSTERN cruise PS124 |
title_full_unstemmed |
Whale sightings during POLARSTERN cruise PS124 |
title_sort |
whale sightings during polarstern cruise ps124 |
publisher |
PANGAEA |
publishDate |
2021 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.939124 https://doi.org/10.1594/PANGAEA.939124 |
op_coverage |
MEDIAN LATITUDE: -70.993531 * MEDIAN LONGITUDE: -33.775542 * SOUTH-BOUND LATITUDE: -76.964883 * WEST-BOUND LONGITUDE: -52.146100 * NORTH-BOUND LATITUDE: -60.448650 * EAST-BOUND LONGITUDE: -23.759683 * DATE/TIME START: 2021-02-05T20:40:13 * DATE/TIME END: 2021-03-27T20:39:20 |
long_lat |
ENVELOPE(-52.146100,-23.759683,-60.448650,-76.964883) |
genre |
Berichte zur Polar- und Meeresforschung Reports on Polar and Marine Research |
genre_facet |
Berichte zur Polar- und Meeresforschung Reports on Polar and Marine Research |
op_relation |
Hellmer, Hartmut H; Holtappels, Moritz (2021): The Expedition PS124 of the Research Vessel POLARSTERN to the southern Weddell Sea in 2021. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 755, 237 pp, https://doi.org/10.48433/BzPM_0755_2021 Information for MAPS whale sighting data (2018-12-18) (URI: hdl:10013/epic.24d813e7-0158-4fc3-bc99-0f4ebb6beecc) https://doi.pangaea.de/10.1594/PANGAEA.939124 https://doi.org/10.1594/PANGAEA.939124 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.939124 https://doi.org/10.48433/BzPM_0755_2021 |
_version_ |
1766375287494279168 |