Description
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. 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.
Enregistrements de données
Les données de cette ressource occurrence ont été publiées sous forme d'une Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant qu'ensemble d'un ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 50 enregistrements.
Cet IPT archive les données et sert donc de dépôt de données. Les données et métadonnées de la ressource sont disponibles pour téléchargement dans la section téléchargements. Le tableau des versions liste les autres versions de chaque ressource rendues disponibles de façon publique et permet de tracer les modifications apportées à la ressource au fil du temps.
Téléchargements
Téléchargez la dernière version de la ressource en tant qu'Archive Darwin Core (DwC-A), ou les métadonnées de la ressource au format EML ou RTF :
| Données sous forme de fichier DwC-A (zip) | télécharger 50 enregistrements dans Anglais (6 kB) - Fréquence de mise à jour: non planifié |
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| Métadonnées sous forme de fichier EML | télécharger dans Anglais (11 kB) |
| Métadonnées sous forme de fichier RTF | télécharger dans Anglais (9 kB) |
Versions
Le tableau ci-dessous n'affiche que les versions publiées de la ressource accessibles publiquement.
Comment citer
Les chercheurs doivent citer cette ressource comme suit:
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
Droits
Les chercheurs doivent respecter la déclaration de droits suivante:
L’éditeur et détenteur des droits de cette ressource est Ukrainian Scientific Centre of Ecology of the Sea (UkrSCES). To the extent possible under law, the publisher has waived all rights to these data and has dedicated them to the Public Domain (CC0 1.0). Users may copy, modify, distribute and use the work, including for commercial purposes, without restriction.
Enregistrement GBIF
Cette ressource a été enregistrée sur le portail GBIF, et possède l'UUID GBIF suivante : e8e2a3e6-0225-4d37-8c66-5f00cc75c181. Ukrainian Scientific Centre of Ecology of the Sea (UkrSCES) publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec l'approbation du Ocean Biodiversity Information System.
Mots-clé
Antarctic; whales observation; occurence; Humpback whale; Minke whale; Observation
Contacts
Personne ayant créé cette ressource:
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Couverture géographique
Whale observation data was collected abroad polish trawler Dalmor II that fished Antarctic krill in the CCAMLR statistical area 48. Observation details, group size, behavioral specific details were fixed. Also photo material was collected. There were 50 sightings of at least 280 individuals from March to July 2011. Vast majority sightings (90%) were minke whales (Balaenoptera bonaerensis). Also humpback whales (Megaptera novaeangliae) were recorded.
| Enveloppe géographique | Sud Ouest [-62,08, -59,27], Nord Est [-60,16, -46,53] |
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Couverture temporelle
| Date de début / Date de fin | 2011-04-01 / 2011-06-22 |
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Méthodes d'échantillonnage
visual observations on a platform of opportunity
| Etendue de l'étude | statistical subarea 48.2, 48.1; 01.04.2011 - 25.04.2011 - 48.2, 04.05.2011 - 14.05.2011 - 48.1, 20.05.2011 - 22.06.2011 - 48.2 |
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Description des étapes de la méthode:
Métadonnées additionnelles
marine, harvested by iOBIS
| Identifiants alternatifs | http://gp.sea.gov.ua:8082/ipt/resource?r=whale_observation_ccamlr_ukrsces |
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