Descripción
Original provider: Marijke N. de Boer Dataset credits: Marijke N. de Boer Abstract: Minke whales and other marine mammals were recorded in the central North Sea in an area characterised by frontal features and high productivity northeast of the Dogger Bank (4677 km2). Survey efforts were carried out from 28 March to 2 July 2007, at a finer scale than in earlier studies in the region, using 2 vessels as platforms of opportunity and a dedicated line- transect survey vessel following distance sampling methods. The high density of whales indicated that this offshore bank slope is an important spring habitat for minke whales in the North Sea. In total, 77 sightings of minke whales comprising 130 individuals were recorded. The peak density of minke whales was estimated to be 0.029 whales km–2 (minimum estimate, 95% CI: 0.012 to 0.070) in May. During peak abundance, the minke whales temporarily congregated in the area, suggesting that the whales were taking advantage of the local spring abundance of sandeels. The density found was higher than previous studies have suggested for the central North Sea. The results correspond to recent observations of minke whale redistribution within the North Sea, and these may be related to a decline in sandeel availability elsewhere in the North Sea. Offshore banks that aggregate prey may therefore become increasingly important feeding habitats for minke whales and other top predators in the North Sea. The observed habitat preference of minke whales along this offshore bank appeared to be similar to that observed in coastal areas, and this suggests some degree of generality regarding the preference for this type of habitat. Purpose: As part of a geophysical seismic survey, marine mammals observations were carried out from three vessels: one seismic vessel, one supply vessel operating well ahead from the seismic vessel. The third vessel, MV ‘Andfjord’, carried out a dedicated Line Transect (LT) survey (23 April to 17 May). The LT vessel was surveying at distances of ≥20 km away from the geophysical vessel and followed predetermined line transects placed randomly in a zigzag pattern in the central (German) part of the survey area.
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 165 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:
Marijke N. de Boer. 2010. Spring distribution and density of minke whale Balaenoptera acutorostrata along an offshore bank in the central North Sea. Marine Ecology Progress Series. Vol. 408: 265–274.
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: 943e8915-6a32-47bf-afc5-a8f26f21e69f. OBIS-SEAMAP publica este recurso y está registrado en GBIF como un publicador de datos avalado por Ocean Biodiversity Information System.
Palabras clave
Occurrence,Marine Animal Survey,Marine Biology,Marine mammals,Visual Sighting,Vessel; Observation; Occurrence
Datos externos
Los datos del recurso también están disponibles en otros formatos
| OBIS-SEAMAP Dataset Page | https://seamap.env.duke.edu/dataset/2257 UTF-8 Interactive map |
|---|---|
| FGDC Metadata | https://seamap.env.duke.edu/dataset/2257/xml UTF-8 XML |
Contactos
- Propietario ●
- Originador ●
- Punto De Contacto
- Proveedor De Los Metadatos ●
- Distribuidor
Cobertura geográfica
North Sea
| Coordenadas límite | Latitud Mínima Longitud Mínima [53,155, 3,084], Latitud Máxima Longitud Máxima [56,264, 4,581] |
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Cobertura taxonómica
Scientific names are based on the Integrated Taxonomic Information System (ITIS).
| Orden | Cetacea (Cetaceans), Cetacea (Cetaceans) |
|---|---|
| Familia | Phocidae (Earless seals), Delphinidae (Dolphins) |
| Género | Lagenorhynchus (White-beaked dolphins) |
| Especie | Lagenorhynchus acutus (Atlantic white-sided dolphin), Tursiops truncatus (Common bottlenose dolphin), Phoca vitulina (Harbor seal), Halichoerus grypus (Atlantic gray seal), Phocoena phocoena (Harbor porpoise), Megaptera novaeangliae (Humpback whale), Balaenoptera acutorostrata (Common minke whale), Lagenorhynchus albirostris (White-beaked dolphin) |
Cobertura temporal
| Fecha Inicial / Fecha Final | 2007-03-31 / 2007-07-02 |
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Datos del proyecto
No hay descripción disponible
| Título | Cetacean sigthings in North Sea |
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| Fuentes de Financiación | NA |
Personas asociadas al proyecto:
- Propietario
Métodos de muestreo
NA
| Área de Estudio | NA |
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Descripción de la metodología paso a paso:
- NA
Datos de la colección
| Nombre de la Colección | zd_2257 |
|---|---|
| Identificador de la Colección | zd_2257 |
| Identificador de la Colección Parental | OBIS-SEAMAP |
Metadatos adicionales
marine, harvested by iOBIS
| Propósito | As part of a geophysical seismic survey, marine mammals observations were carried out from three vessels: one seismic vessel, one supply vessel operating well ahead from the seismic vessel. The third vessel, MV ‘Andfjord’, carried out a dedicated Line Transect (LT) survey (23 April to 17 May). The LT vessel was surveying at distances of ≥20 km away from the geophysical vessel and followed predetermined line transects placed randomly in a zigzag pattern in the central (German) part of the survey area. |
|---|---|
| Identificadores alternativos | https://ipt.env.duke.edu/resource?r=zd_2257 |