Description
Original provider: National Marine Mammal Laboratory Dataset credits: National Marine Mammal Laboratory Abstract: Visual line-transect surveys for cetaceans were conducted in the southeastern Bering Sea (SEBS) from 10 June to 3 July 2000, in association with a pollock stock assessment survey aboard the NOAA ship Miller Freeman. Observers scanned for cetaceans with 25x (Big Eye) binoculars from the flying bridge (platform height = 12 m) at survey speeds of 18.5-22 km h-1 (10-12 knots). Transect survey effort was 2,194 km in 2000, in a study area 158,561 km2. An additional 402 km of trackline was surveyed in 2000 while in transit to or from pollock survey way points. Fin whales (<i>Balaenoptera physalus</i>) were the most common large whale, and Dall's porpoises (<i>Phocoenoides dalli</i>) were the most common small cetacean. In the SEBS 2000, uncorrected abundance estimates were: 683 (CV = 0.32) fin whales, 102 (CV = 0.50) humpback whales (<i>Megaptera novaeangliae</i>), 1,003 (CV = 0.26) minke whales, 9,807 (CV = 0.20) Dall's porpoise, and 1,958 (CV = 0.21) harbor porpoise. Non-pollock echosigns observed near cetaceans, some of which may have been cetacean prey, were not routinely identified during trawl sampling because the research focus was on pollock abundance assessment. Clearly, additional surveys and concomitant assessment of cetacean prey are needed to better define their role in the Bering Sea ecosystem. Such surveys, combined with measures of local hydrography and prey field should be the goal of future cetacean assessments.
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 428 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.
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:
Waite, J. 2006. NMML Bering Sea Cetacean Survey 2000. Version 1.0.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/623ec599.
Droits
Les chercheurs doivent respecter la déclaration de droits suivante:
L’éditeur et détenteur des droits de cette ressource est OBIS-SEAMAP. Ce travail est sous licence Creative Commons Attribution Non Commercial (CC-BY-NC) 4.0.
Enregistrement GBIF
Cette ressource a été enregistrée sur le portail GBIF, et possède l'UUID GBIF suivante : eae32224-05a2-4e3c-90f8-77b1d22a850c. OBIS-SEAMAP publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec l'approbation du Ocean Biodiversity Information System.
Mots-clé
Occurrence; Observation; Marine Biology; Visual sighting; survey; cetacean; walleye pollock; trawl. acoustic; Vessels; Sightings; Occurrence
Données externes
Les données de la ressource sont disponibles dans d'autres formats
| OBIS-SEAMAP Dataset Page | https://seamap.env.duke.edu/dataset/122 UTF-8 Interactive map |
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| FGDC Metadata | https://seamap.env.duke.edu/dataset/122/fgdc UTF-8 XML |
| EML Metadata | https://seamap.env.duke.edu/dataset/122/eml UTF-8 XML |
Contacts
- Propriétaire ●
- Créateur ●
- Personne De Contact
- Primary contact
- Fournisseur Des Métadonnées ●
- Distributeur
- A328 LSRC building
Couverture géographique
Oceans,southeastern Bering Sea,Bering Sea,Alaska
| Enveloppe géographique | Sud Ouest [54,187, -170,296], Nord Est [58,592, -154,979] |
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Couverture taxonomique
Scientific names are based on the Integrated Taxonomic Information System (ITIS).
| Order | Cetacea (Cetaceans) |
|---|---|
| Suborder | Caniformia (Pinnipeds) |
| Genus | Mesoplodon (Beaked whales) |
| Species | Balaenoptera acutorostrata (Common minke whale), Balaenoptera borealis (Sei whale), Balaenoptera physalus (Fin whale), Berardius bairdii (Baird's beaked whale), Callorhinus ursinus (Northern fur seal), Enhydra lutris (Sea otter), Eschrichtius robustus (Gray whale), Eumetopias jubatus (Steller sea lion), Lagenorhynchus obliquidens (Pacific white-sided dolphin), Megaptera novaeangliae (Humpback whale), Odobenus rosmarus (Walrus), Orcinus orca (Killer whale), Phoca vitulina (Harbor seal), Phocoena phocoena (Harbor porpoise), Phocoenoides dalli (Dall's porpoise) |
Couverture temporelle
| Date de début / Date de fin | 2000-06-10 / 2000-07-02 |
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Données sur le projet
Pas de description disponible
| Titre | NMML Bering Sea Cetacean Survey 2000 |
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| Financement | NA |
Les personnes impliquées dans le projet:
- Propriétaire
Méthodes d'échantillonnage
NA
| Etendue de l'étude | NA |
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Description des étapes de la méthode:
- NA
Données de collection
| Nom de la collection | zd_122 |
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| Identifiant de collection | zd_122 |
| Identifiant de la collection parente | OBIS-SEAMAP |
Citations bibliographiques
- Moore, S.E., J. M. Waite, N. A. Friday and T. Honkalehto. 2002. Cetacean distribution and relative abundance on the central–eastern and the southeastern Bering Sea shelf with reference to oceanographic domains. Progress in Oceanography: 55(1-2): 249-261.
Métadonnées additionnelles
marine, harvested by iOBIS.
| Objet | Cetacean distribution and abundance in the Bering Sea is poorly described, with even recent reviews of cetaceans' role in the ecosystem reliant on data from the commercial whaling era. Commercial harvests of baleen whales (mysticetes) were extensive in the North Pacific and Bering Sea, especially between 1835 and 1850 for North Pacific right whales and between 1965 and 1979 for fin and humpback whales. The effect of these large-scale removals on the marine ecosystem is largely unknown. Similarly, some species of toothed whales (odontocetes) are sometimes killed in the course of commercial fishing operations. Pelagic dolphins and Dall's porpoise were especially vulnerable during high seas driftnet fishing in the North Pacific in the 1980s, and once again the long-term ramifications of these removals are unknown. One reason for this uncertainty is the lack of data on current cetacean distribution and estimates of abundance in pelagic environments. Surveys to determine distribution and abundance are costly and, therefore, often confined either to coastal waters where the logistics are most practical, or to areas of the ocean where marine mammal mortality associated with commercial fishing is particularly high. The pelagic waters of the Bering Sea have not met either criteria and so are comparatively undersampled for cetaceans. Cruises were undertaken in association with the Alaska Fisheries Science Center/Resource Assessment and Conservation Engineering (AFSC/RACE) division to conduct visual surveys for cetaceans during the semi-annual acoustic trawl surveys for walleye pollock (<i>Theragra chalcogramma</i>) on the Bering Sea shelf. Biologists from the AFSC/National Marine Mammal Laboratory (NMML) were able to join subsequent surveys in the southeastern Bering Sea (SEBS) in 2000, providing an opportunity to describe cetacean distribution and calculate abundance over a broad area of the Bering Sea shelf. |
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| Identifiants alternatifs | https://doi.org/10.82144/623ec599 |
| https://seamap.env.duke.edu/dataset/122 | |
| https://www.gbif.org/dataset/eae32224-05a2-4e3c-90f8-77b1d22a850c | |
| https://obis.org/dataset/4176d63d-2ac2-42c4-9010-901856b6db0e | |
| eae32224-05a2-4e3c-90f8-77b1d22a850c | |
| https://ipt.env.duke.edu/resource?r=zd_122 |