Descripción
Original provider: Duke University Marine Laboratory Dataset credits: Duke University Marine Laboratory Abstract: Four stocks of bottlenose dolphins (<i>Tursiops truncatus</i>) have been described in the waters of North Carolina: the Northern Migratory (NM); Southern Migratory (SM); Northern NC Estuarine System (NNCES); and Southern NC Estuarine System (SNCES) stocks (Waring et al. 2013). The two migratory stocks occur in coastal shelf waters, but dolphins from the two estuarine stocks also occur in near-shore coastal waters. During summer, dolphins from both the SM and NNCES stocks are vulnerable to by-catch in small-mesh gill nets set in coastal waters, primarily gill nets set for Spanish mackerel very close to shore along the Outer Banks. Little is currently known about the degree of overlap of dolphins from these two stocks along the Outer Banks, which hampers our ability to assess the true impact of these by-catches. In this research project we photographed and collected biopsy samples of bottlenose dolphins from both the SM and NNCES stocks in coastal waters along the Outer Banks during the summer and early autumn of 2011 and 2012. We sampled dolphins from both stocks to determine: (1) their distribution patterns; (2) the degree of overlap between NNCES and SM stocks; and (3) specifically, how far from shore the NNCES animals are found. Almost all of the groups we encountered were from the SM stock; we only encountered four groups of NNCES dolphins during these surveys. In general, estuarine animals were observed in relatively small groups, close to shore, in shallow water and in relatively close proximity to an inlet. Sighting and biopsy locations were significantly closer to shore (p=0.00278 and p=0.00091, respectively) and shallower (p=0.00117) for the NNCES stock than the SM stock. We note, however, that these conclusions should be tempered by the small sample of estuarine animals we observed. Nevertheless, all four sightings of estuarine dolphins occurred within 500-m of shore and in waters less than 4-m deep. The distribution of the two stocks overlapped in waters very close to shore, but we did not observe any estuarine groups beyond 500 m. from shore.<br><br> This work was funded by the North Carolina Sea Grant Bycatch Reduction Marine Mammal Project. This research was conducted under General Authorization Number 16185 from the NMFS held by Dr. Andrew Read, allowing the close approach to bottlenose dolphins for research purposes.<br><br> Reference: <a href="http://www.nmfs.noaa.gov/pr/sars/pdf/ao2012.pdf">Waring G.T., E. Josephson, K. Maze-Foley and P.E. Rosel (eds.) 2013. U.S. Atlantic and Gulf of Mexico Marine Mammal Stock Assessments – 2012.</a> Accessed 28 September 2013.
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 57 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:
Urian, K. 2013. DUML surveys for the stock discrimination of bottlenose dolphins along the Outer Banks of North Carolina 2011-2012. Version 1.0.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/9ff3d8a2.
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: fca29e62-2331-4860-abf8-8615d8328d52. 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; 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/1010 UTF-8 Interactive map |
|---|---|
| FGDC Metadata | https://seamap.env.duke.edu/dataset/1010/fgdc UTF-8 XML |
| EML Metadata | https://seamap.env.duke.edu/dataset/1010/eml UTF-8 XML |
Contactos
- Propietario ●
- Originador ●
- Punto De Contacto
- Primary contact
- Proveedor De Los Metadatos ●
- Distribuidor
- A328 LSRC building
Cobertura geográfica
Oceans
| Coordenadas límite | Latitud Mínima Longitud Mínima [35,063, -75,975], Latitud Máxima Longitud Máxima [35,943, -75,429] |
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Cobertura taxonómica
Scientific names are based on the Integrated Taxonomic Information System (ITIS).
| Especie | Tursiops truncatus (Common bottlenose dolphin) |
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Cobertura temporal
| Fecha Inicial / Fecha Final | 2011-07-01 / 2012-09-30 |
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Datos del proyecto
No hay descripción disponible
| Título | DUML surveys for the stock discrimination of bottlenose dolphins along the Outer Banks of North Carolina 2011-2012 |
|---|---|
| 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_1010 |
|---|---|
| Identificador de la Colección | zd_1010 |
| Identificador de la Colección Parental | OBIS-SEAMAP |
Metadatos adicionales
marine, harvested by iOBIS. One record did not have a group size estimate available, so "1" was used to be conservative and noted in the "Notes" column.
| Propósito | |
|---|---|
| Identificadores alternativos | https://doi.org/10.82144/9ff3d8a2 |
| https://seamap.env.duke.edu/dataset/1010 | |
| https://www.gbif.org/dataset/fca29e62-2331-4860-abf8-8615d8328d52 | |
| https://obis.org/dataset/9381239f-3d64-48b4-80c9-b9ebb674edc2 | |
| fca29e62-2331-4860-abf8-8615d8328d52 | |
| https://ipt.env.duke.edu/resource?r=zd_1010 |