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Crabeater seals (Lobodon carcinophaga) in the Weddell Sea during DRE1998 campaign, with link to shapefiles of filtered and unfiltered seal locations for ArcGIS visualisation (2015)

Nachtsheim, Dominik A ; Jerosch, Kerstin ; Hagen, Wilhelm ; [weitere]

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Publikationsdatum: 2023-04-21

Schlagwort(e): DrescherInlet; Marine Mammal Tracking; MMT

Materialart: Dataset

Format: application/zip, 277.8 kBytes

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Crabeater seals (Lobodon carcinophaga) in the Weddell Sea during DRE1998 campaign, with link to files of gridded seal locations and environmental parameters for Maxent analyses (2015)

Nachtsheim, Dominik A ; Jerosch, Kerstin ; Hagen, Wilhelm ; [weitere]

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Publikationsdatum: 2023-04-21

Schlagwort(e): DrescherInlet; Marine Mammal Tracking; MMT

Materialart: Dataset

Format: application/zip, 8.3 MBytes

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(Table 3) Dry mass, lipid, carbon and nitrogen content and fatty acid composition of Temora longicornis females from the field and during the experiment in 2008 (2011)

Kreibich, Tobias ; Saborowski, Reinhard ; Hagen, Wilhelm ; [weitere]

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Publikationsdatum: 2024-05-15

Schlagwort(e): 6,9,12,15-Hexadecatetraenoic acid of total fatty acids; 6,9,12-Hexadecatrienoic acid of total fatty acids; 9,12-Hexadecadienoic acid of total fatty acids; all-cis-4,7,10,13,16,19-Docosahexaenoic acid of total fatty acids; all-cis-5,8,11,14,17-Eicosapentaenoic acid of total fatty acids; all-cis-6,9,12,15-Octadecatetraenoic acid of total fatty acids; all-cis-9,12,15-Octadecatrienoic acid of total fatty acids; Carbon/Nitrogen ratio; Carbon/Nitrogen ratio, standard deviation; Carbon content per individual; cis-11-Icosenoic acid of total fatty acids; cis-11-Octadecenoic acid of total fatty acids (IUPAC: Octadec-11-enoic acid); cis-15-Tetracosenoic acid of total fatty acids; cis-9-Hexadecenoic acid of total fatty acids (IUPAC: (9Z)-hexadec-9-enoic acid); cis-9-Octadecenoic acid of total fatty acids (IUPAC: Octadec-9-enoic acid); Dry mass, standard deviation; Dry mass per individual; Experiment day; Fatty acids, standard deviation; Hexadecanoic acid of total fatty acids; Lipids, standard deviation; Lipids per individual; Monounsaturated fatty acids of total fatty acids; Nitrogen content per individual; Octadecanoic acid of total fatty acids; Octadecatetraenoic acid 18:4(n-4) of total fatty acids; Polyunsaturated fatty acids of total fatty acids; Saturated fatty acids of total fatty acids; Sex; Species; Standard deviation; Tetradecanoic acid of total fatty acids; Treatment: food

Materialart: Dataset

Format: text/tab-separated-values, 225 data points

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Spatio-temporal patterns in acoustic presence and distribution of Antarctic blue whales Balaenoptera musculus intermedia in the Weddell Sea (2016)

Thomisch, Karolin ; Boebel, Olaf ; Clark, Christopher W. ; [weitere]

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Publikationsdatum: 2022-05-25

Beschreibung: © The Author(s), 2016. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Endangered Species Research 30 (2016): 239-253, doi:10.3354/esr00739.

Beschreibung: Distribution and movement patterns of Antarctic blue whales Balaenoptera musculus intermedia at large temporal and spatial scales are still poorly understood. The objective of this study was to explore spatio-temporal distribution patterns of Antarctic blue whales in the Atlantic sector of the Southern Ocean, using passive acoustic monitoring data. Multi-year data were collected between 2008 and 2013 by 11 recorders deployed in the Weddell Sea and along the Greenwich meridian. Antarctic blue whale Z-calls were detected via spectrogram cross-correlation. A Blue Whale Index was developed to quantify the proportion of time during which acoustic energy from Antarctic blue whales dominated over background noise. Our results show that Antarctic blue whales were acoustically present year-round, with most call detections between January and April. During austral summer, the number of detected calls peaked synchronously throughout the study area in most years, and hence, no directed meridional movement pattern was detectable. During austral winter, vocalizations were recorded at latitudes as high as 69°S, with sea ice cover exceeding 90%, suggesting that some Antarctic blue whales overwinter in Antarctic waters. Polynyas likely serve as an important habitat for baleen whales during austral winter, providing food and reliable access to open water for breathing. Overall, our results support increasing evidence of a complex and non-obligatory migratory behavior of Antarctic blue whales, potentially involving temporally and spatially dynamic migration routes and destinations, as well as variable timing of migration to and from the feeding grounds.

Schlagwort(e): Passive acoustic monitoring ; Antarctic blue whale ; Balaenoptera musculus intermedia ; Baleen whale migration ; Southern Ocean

Repository-Name: Woods Hole Open Access Server

Materialart: Article

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