Whale sightings during POLARSTERN cruise PS117
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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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.929088 2023-05-15T15:42:15+02:00 Whale sightings during POLARSTERN cruise PS117 Burkhardt, Elke MEDIAN LATITUDE: -63.887040 * MEDIAN LONGITUDE: -27.175416 * SOUTH-BOUND LATITUDE: -70.535920 * WEST-BOUND LONGITUDE: -62.067130 * NORTH-BOUND LATITUDE: -38.244000 * EAST-BOUND LONGITUDE: 11.990570 * DATE/TIME START: 2018-12-17T13:50:50 * DATE/TIME END: 2019-02-04T08:54:17 2021-03-15 text/tab-separated-values, 267 data points https://doi.pangaea.de/10.1594/PANGAEA.929088 https://doi.org/10.1594/PANGAEA.929088 en eng PANGAEA Boebel, Olaf (2019): The Expedition PS117 of the Research Vessel POLARSTERN to the Weddell Sea in 2018/2019. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 732, 205 pp, https://doi.org/10.2312/BzPM_0732_2019 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.929088 https://doi.org/10.1594/PANGAEA.929088 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Certainty of identification CT DATE/TIME Individuals LATITUDE LONGITUDE MAPS Marine Mammal Perimeter Surveillance from RV Polarstern Polarstern PS117 PS117-track South Atlantic Ocean Underway cruise track measurements Visual observation Whale species Dataset 2021 ftpangaea https://doi.org/10.1594/PANGAEA.929088 https://doi.org/10.2312/BzPM_0732_2019 2023-01-20T09:14:35Z 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 PS117 (Cape Town – Punta Arenas) 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 South Atlantic Ocean PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-62.067130,11.990570,-38.244000,-70.535920) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Certainty of identification CT DATE/TIME Individuals LATITUDE LONGITUDE MAPS Marine Mammal Perimeter Surveillance from RV Polarstern Polarstern PS117 PS117-track South Atlantic Ocean Underway cruise track measurements Visual observation Whale species |
spellingShingle |
Certainty of identification CT DATE/TIME Individuals LATITUDE LONGITUDE MAPS Marine Mammal Perimeter Surveillance from RV Polarstern Polarstern PS117 PS117-track South Atlantic Ocean Underway cruise track measurements Visual observation Whale species Burkhardt, Elke Whale sightings during POLARSTERN cruise PS117 |
topic_facet |
Certainty of identification CT DATE/TIME Individuals LATITUDE LONGITUDE MAPS Marine Mammal Perimeter Surveillance from RV Polarstern Polarstern PS117 PS117-track South Atlantic Ocean Underway cruise track measurements Visual observation 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 PS117 (Cape Town – Punta Arenas) 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 PS117 |
title_short |
Whale sightings during POLARSTERN cruise PS117 |
title_full |
Whale sightings during POLARSTERN cruise PS117 |
title_fullStr |
Whale sightings during POLARSTERN cruise PS117 |
title_full_unstemmed |
Whale sightings during POLARSTERN cruise PS117 |
title_sort |
whale sightings during polarstern cruise ps117 |
publisher |
PANGAEA |
publishDate |
2021 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.929088 https://doi.org/10.1594/PANGAEA.929088 |
op_coverage |
MEDIAN LATITUDE: -63.887040 * MEDIAN LONGITUDE: -27.175416 * SOUTH-BOUND LATITUDE: -70.535920 * WEST-BOUND LONGITUDE: -62.067130 * NORTH-BOUND LATITUDE: -38.244000 * EAST-BOUND LONGITUDE: 11.990570 * DATE/TIME START: 2018-12-17T13:50:50 * DATE/TIME END: 2019-02-04T08:54:17 |
long_lat |
ENVELOPE(-62.067130,11.990570,-38.244000,-70.535920) |
genre |
Berichte zur Polar- und Meeresforschung Reports on Polar and Marine Research South Atlantic Ocean |
genre_facet |
Berichte zur Polar- und Meeresforschung Reports on Polar and Marine Research South Atlantic Ocean |
op_relation |
Boebel, Olaf (2019): The Expedition PS117 of the Research Vessel POLARSTERN to the Weddell Sea in 2018/2019. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 732, 205 pp, https://doi.org/10.2312/BzPM_0732_2019 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.929088 https://doi.org/10.1594/PANGAEA.929088 |
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.929088 https://doi.org/10.2312/BzPM_0732_2019 |
_version_ |
1766375291998961664 |