Descripción
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.
Registros
Los datos en este recurso de registros biológicos han sido publicados como Archivo Darwin Core(DwC-A), el cual es un formato estándar para compartir datos de biodiversidad como un conjunto de una o más tablas de datos. La tabla de datos del core contiene 428 registros.
Este IPT archiva los datos y, por lo tanto, sirve como repositorio de datos. Los datos y los metadatos del recurso están disponibles para su descarga en la sección descargas. La tabla versiones enumera otras versiones del recurso que se han puesto a disposición del público y permite seguir los cambios realizados en el recurso a lo largo del tiempo.
Versiones
La siguiente tabla muestra sólo las versiones publicadas del recurso que son de acceso público.
¿Cómo referenciar?
Los usuarios deben citar este trabajo de la siguiente manera:
Waite, J. 2006. NMML Bering Sea Cetacean Survey 2000. Version 1.0.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/623ec599.
Derechos
Los usuarios deben respetar los siguientes derechos de uso:
El publicador y propietario de los derechos de este trabajo es OBIS-SEAMAP. Esta obra está bajo una licencia Creative Commons de Atribución/Reconocimiento-NoComercial (CC-BY-NC 4.0).
Registro GBIF
Este recurso ha sido registrado en GBIF con el siguiente UUID: eae32224-05a2-4e3c-90f8-77b1d22a850c. OBIS-SEAMAP publica este recurso y está registrado en GBIF como un publicador de datos avalado por Ocean Biodiversity Information System.
Palabras clave
Occurrence; Observation; Marine Biology; Visual sighting; survey; cetacean; walleye pollock; trawl. acoustic; Vessels; Sightings; Occurrence
Datos externos
Los datos del recurso también están disponibles en otros formatos
| OBIS-SEAMAP Dataset Page | https://seamap.env.duke.edu/dataset/122 UTF-8 Interactive map |
|---|---|
| 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 |
Contactos
- Propietario ●
- Originador ●
- Punto De Contacto
- Primary contact
- Proveedor De Los Metadatos ●
- Distribuidor
- A328 LSRC building
Cobertura geográfica
Oceans,southeastern Bering Sea,Bering Sea,Alaska
| Coordenadas límite | Latitud Mínima Longitud Mínima [54,187, -170,296], Latitud Máxima Longitud Máxima [58,592, -154,979] |
|---|
Cobertura taxonómica
Scientific names are based on the Integrated Taxonomic Information System (ITIS).
| Orden | Cetacea (Cetaceans) |
|---|---|
| Suborden | Caniformia (Pinnipeds) |
| Género | Mesoplodon (Beaked whales) |
| Especie | 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) |
Cobertura temporal
| Fecha Inicial / Fecha Final | 2000-06-10 / 2000-07-02 |
|---|
Datos del proyecto
No hay descripción disponible
| Título | NMML Bering Sea Cetacean Survey 2000 |
|---|---|
| Fuentes de Financiación | NA |
Personas asociadas al proyecto:
- Propietario
Métodos de muestreo
NA
| Área de Estudio | NA |
|---|
Descripción de la metodología paso a paso:
- NA
Datos de la colección
| Nombre de la Colección | zd_122 |
|---|---|
| Identificador de la Colección | zd_122 |
| Identificador de la Colección Parental | OBIS-SEAMAP |
Referencias bibliográficas
- 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.
Metadatos adicionales
marine, harvested by iOBIS.
| Propósito | 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. |
|---|---|
| Identificadores alternativos | 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 |