IMIS | Vlaams Instituut voor de Zee
 

Vlaams Instituut voor de Zee

Platform voor marien onderzoek

IMIS

Publicaties | Instituten | Personen | Datasets | Projecten | Kaarten
[ meld een fout in dit record ] Print deze pagina

Antractic whale observation on a platform of opportunity abroad krill fishing vessel "Dalmor II", April - July 2011.
Citatie
Vishnyakova K (2016): Antractic whale observation on a platform of opportunity abroad krill fishing vessel "Dalmor II", April - July 2011.. v1.9. Ukrainian Scientific Centre of Ecology of the Sea (UkrSCES). Dataset/Occurrence. http://gp.sea.gov.ua:8082/ipt/resource?r=whale_observation_ccamlr_ukrsces&v=1.9 https://doi.org/10.15468/khjvhb

Toegang tot data
Gearchiveerde data
Beschikbaarheid: CC0 Voor zover mogelijk onder de wet, heeft de persoon, die CC0 toegekend heeft aan deze dataset, afstand gedaan van alle auteurs- en aanverwante rechten.

Beschrijving
Karina Vishnyakova, an international scientific observer, conducted cetacean observations from a platform of opportunity, abroad polish trawler Dalmor II that fished Antarctic krill, during a cruise from March to July 2011. Most of the fishing season the vessel was in the CCAMLR statistical area 48.2, to the north-east of the South Orkney Islands. Observations were conducted on the vessel deck or on the bridge. The following data were recorded: observation details, time, geographical coordinates, species and number of animals in a group (or minimum abundance estimate), distance from the vessel and behavioral specific details. Also the photo material was collected. meer

Over the observation period 50 sightings of at least 280 individuals were recorded. Vast majority of recorded sightings (90%) and individuals (at least 90%) were minke whales (Balaenoptera bonaerensis); humpback whales (Megaptera novaeangliae) were recorded in 5 cases. The largest minke whale groups were recorded in first ten-day period of April. Whales in such groups demonstrated feeding behavior, actively fed on the high density krill aggregations. Probably such aggregations were later fished by vessels on those fishing grounds. Group size varied from 2-3 up to few tens individuals (in the mean 6 ± 9.23 (standard deviation), median 3 individuals). In first ten-day period of April average number of individuals in groups was 12 whales ( ± 15.75 (standard deviation), median 8 individuals). Frequency of occurrence did not correlated with the time of day. Distance to the animals also varied from few meters to 5-7 kilometers. However, direct interactions of whales with the vessel were never recorded. By late April – early May, number of sightings sharply declined, they became sporadic. During that period fast migrations of small whale groups were recorded. Also minke whales demonstrated «nervous» behavior, coming to the surface frequently and moving fast and jerky. Humpback whales were recorded in groups of 2-3 individuals at late April near the South Orkney Islands and early May near the South Shetland Islands.

Scope
Thema's:
Biologie > Zoogdieren
Kernwoorden:
Marien, Antarctica, South Shetland I., Balaenoptera bonaerensis Burmeister, 1867, Megaptera novaeangliae (Borowski, 1781)

Geografische spreiding
Antarctica, South Shetland I. [Marine Regions]

Spreiding in de tijd
1 April 2011 - 22 Juni 2011

Taxonomische spreiding
Balaenoptera bonaerensis Burmeister, 1867 [WoRMS]
Megaptera novaeangliae (Borowski, 1781) [WoRMS]

Parameter
Voorkomen van soorten

Bijdrage door
Ukrainian scientific center of Ecology of Sea (UkrSCES), meerdata creator

Gerelateerde datasets
Gepubliceerd in:
OBIS Black Sea, meer

Dataset status: Afgelopen
Data type: Data
Data oorsprong: Onderzoek: veldonderzoek
Metadatarecord aangemaakt: 2017-01-17
Informatie laatst gewijzigd: 2017-01-19
Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid