Harbour seal counts in the Elbe Estuary, Germany, between Wedel and Cuxhaven in 2018/2019, supplement to: Bundesanstalt für Gewässerkunde (2019): Seehunde im Elbeästuar von Wedel bis Cuxhaven 2018/2019. Koblenz, BfG-1996
Aerial surveys were conducted in the Elbe Estuary, Germany, to count harbour seals on their haul-out sites. Haul-out sites were located within the intertidal zone, usually close to the waterway or tidal creeks. The north-western border of the study area was located at river-km 728 (city of Cuxhaven)...
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Online Access: | https://dx.doi.org/10.1594/pangaea.907670 https://doi.pangaea.de/10.1594/PANGAEA.907670 |
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ftdatacite:10.1594/pangaea.907670 2023-05-15T16:33:36+02:00 Harbour seal counts in the Elbe Estuary, Germany, between Wedel and Cuxhaven in 2018/2019, supplement to: Bundesanstalt für Gewässerkunde (2019): Seehunde im Elbeästuar von Wedel bis Cuxhaven 2018/2019. Koblenz, BfG-1996 Bundesanstalt Für Gewässerkunde 2019 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.907670 https://doi.pangaea.de/10.1594/PANGAEA.907670 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.5675/bfg-1996 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Aerial survey Elbe Estuary Harbour Seal Phoca vitulina Seal count DATE/TIME LONGITUDE LATITUDE Phoca vitulina, adult Phoca vitulina, juvenil Aircraft Dataset dataset Supplementary Dataset 2019 ftdatacite https://doi.org/10.1594/pangaea.907670 https://doi.org/10.5675/bfg-1996 2022-02-09T13:18:14Z Aerial surveys were conducted in the Elbe Estuary, Germany, to count harbour seals on their haul-out sites. Haul-out sites were located within the intertidal zone, usually close to the waterway or tidal creeks. The north-western border of the study area was located at river-km 728 (city of Cuxhaven) and the south-eastern border was located at river-km 632 (Mühlenberger Loch). Flights were performed monthly from August 2018 until July 2019 (12 flights in total) at low tide. Within each month, a flight date in the middle of the month was chosen, depending on the tide and weather conditions. Flights were performed with a twin-engined aircraft at a height of approximately 600 feet and at an average speed of 100 knots. The flight routes were tracked via GPS. Sighted harbour seals were photographed on their haul-out sites and the corresponding geographic position was recorded. In the office, the photos were used to count the animals. In the beginning of the pupping season in June, adult and juvenile individuals were counted separately. The sizes of individual seals were used to distinguish between both age classes. Later in the year, juvenile seals could no longer visually be distinguished from adult individuals due to the pups' rapid growth. Consequently, count data of juvenile harbour seals are only available for June 2019. Dataset harbour seal Phoca vitulina DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Aerial survey Elbe Estuary Harbour Seal Phoca vitulina Seal count DATE/TIME LONGITUDE LATITUDE Phoca vitulina, adult Phoca vitulina, juvenil Aircraft |
spellingShingle |
Aerial survey Elbe Estuary Harbour Seal Phoca vitulina Seal count DATE/TIME LONGITUDE LATITUDE Phoca vitulina, adult Phoca vitulina, juvenil Aircraft Bundesanstalt Für Gewässerkunde Harbour seal counts in the Elbe Estuary, Germany, between Wedel and Cuxhaven in 2018/2019, supplement to: Bundesanstalt für Gewässerkunde (2019): Seehunde im Elbeästuar von Wedel bis Cuxhaven 2018/2019. Koblenz, BfG-1996 |
topic_facet |
Aerial survey Elbe Estuary Harbour Seal Phoca vitulina Seal count DATE/TIME LONGITUDE LATITUDE Phoca vitulina, adult Phoca vitulina, juvenil Aircraft |
description |
Aerial surveys were conducted in the Elbe Estuary, Germany, to count harbour seals on their haul-out sites. Haul-out sites were located within the intertidal zone, usually close to the waterway or tidal creeks. The north-western border of the study area was located at river-km 728 (city of Cuxhaven) and the south-eastern border was located at river-km 632 (Mühlenberger Loch). Flights were performed monthly from August 2018 until July 2019 (12 flights in total) at low tide. Within each month, a flight date in the middle of the month was chosen, depending on the tide and weather conditions. Flights were performed with a twin-engined aircraft at a height of approximately 600 feet and at an average speed of 100 knots. The flight routes were tracked via GPS. Sighted harbour seals were photographed on their haul-out sites and the corresponding geographic position was recorded. In the office, the photos were used to count the animals. In the beginning of the pupping season in June, adult and juvenile individuals were counted separately. The sizes of individual seals were used to distinguish between both age classes. Later in the year, juvenile seals could no longer visually be distinguished from adult individuals due to the pups' rapid growth. Consequently, count data of juvenile harbour seals are only available for June 2019. |
format |
Dataset |
author |
Bundesanstalt Für Gewässerkunde |
author_facet |
Bundesanstalt Für Gewässerkunde |
author_sort |
Bundesanstalt Für Gewässerkunde |
title |
Harbour seal counts in the Elbe Estuary, Germany, between Wedel and Cuxhaven in 2018/2019, supplement to: Bundesanstalt für Gewässerkunde (2019): Seehunde im Elbeästuar von Wedel bis Cuxhaven 2018/2019. Koblenz, BfG-1996 |
title_short |
Harbour seal counts in the Elbe Estuary, Germany, between Wedel and Cuxhaven in 2018/2019, supplement to: Bundesanstalt für Gewässerkunde (2019): Seehunde im Elbeästuar von Wedel bis Cuxhaven 2018/2019. Koblenz, BfG-1996 |
title_full |
Harbour seal counts in the Elbe Estuary, Germany, between Wedel and Cuxhaven in 2018/2019, supplement to: Bundesanstalt für Gewässerkunde (2019): Seehunde im Elbeästuar von Wedel bis Cuxhaven 2018/2019. Koblenz, BfG-1996 |
title_fullStr |
Harbour seal counts in the Elbe Estuary, Germany, between Wedel and Cuxhaven in 2018/2019, supplement to: Bundesanstalt für Gewässerkunde (2019): Seehunde im Elbeästuar von Wedel bis Cuxhaven 2018/2019. Koblenz, BfG-1996 |
title_full_unstemmed |
Harbour seal counts in the Elbe Estuary, Germany, between Wedel and Cuxhaven in 2018/2019, supplement to: Bundesanstalt für Gewässerkunde (2019): Seehunde im Elbeästuar von Wedel bis Cuxhaven 2018/2019. Koblenz, BfG-1996 |
title_sort |
harbour seal counts in the elbe estuary, germany, between wedel and cuxhaven in 2018/2019, supplement to: bundesanstalt für gewässerkunde (2019): seehunde im elbeästuar von wedel bis cuxhaven 2018/2019. koblenz, bfg-1996 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2019 |
url |
https://dx.doi.org/10.1594/pangaea.907670 https://doi.pangaea.de/10.1594/PANGAEA.907670 |
genre |
harbour seal Phoca vitulina |
genre_facet |
harbour seal Phoca vitulina |
op_relation |
https://dx.doi.org/10.5675/bfg-1996 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.907670 https://doi.org/10.5675/bfg-1996 |
_version_ |
1766023287549198336 |