SAMPLINGEVENT

Pelorus Sound / Te Hoiere (HS66) Hydrographic Survey Marine Mammal Observations

Última versión Publicado por The National Institute of Water and Atmospheric Research (NIWA) en 21 de diciembre de 2021 The National Institute of Water and Atmospheric Research (NIWA)
Discovery Marine Ltd (DML) and iXBlue were contracted in 2019 by Land Information New Zealand (LINZ) to undertake hydrographic surveying services for the Pelorus Sound / Te Hoiere Hydrographic Survey (HS66).... Más

Descripción

Discovery Marine Ltd (DML) and iXBlue were contracted in 2019 by Land Information New Zealand (LINZ) to undertake hydrographic surveying services for the Pelorus Sound / Te Hoiere Hydrographic Survey (HS66).

Marine mammals, in particular dolphins are a regular occurrence in the Marlborough Sounds. The species are important both nationally and internationally. There are eight marine mammal species known to frequent the Sounds (Davidson et al., 2011). Two of these are classified as nationally endangered (Hectors and Bottlenose) and one is considered nationally critical (Killer whale or Orca).

DML and iXBlue were contracted to map the seabed in the Marlborough Sounds (Pelorus Sound / Te Hoiere, Admiralty Bay and Te Aumiti (French Pass)) using multibeam sounders. The frequency of the sound emitted by a multibeam echo sounder is outside the hearing range of marine mammals in the Sounds, however as a precaution, best practice for minimising survey activities in the immediate proximity of marine mammals was used, including logging all sightings while on multibeam effort.

Mulitbeam operators and surveyors logged marine mammal sightings. Blue Planet Marine (BPM) was contracted prior to the Queen Charlotte Sound / Tōtaranui and Tory Channel / Kura Te Au Hydrographic Survey (HS51) in 2016/7 to provide a review of the potential efforts of a multibeam survey and make suggestions as to best practice to minimise disturbance. Overall they concluded the survey was in the category of ‘minimal disturbance’ hence not requiring a dedicated MMO onboard (Blue Planet Marine, 2016). This report also gave some recommendations, including survey teams to log sightings, that NIWA adopted in the survey plan used by DML and iXBlue.

Registros

Los datos en este recurso de evento de muestreo 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 61 registros.

también existen 2 tablas de datos de extensiones. Un registro en una extensión provee información adicional sobre un registro en el core. El número de registros en cada tabla de datos de la extensión se ilustra a continuación.

  • Event (core)
    61
  • ExtendedMeasurementOrFact 
    546
  • Occurrence 
    61

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.

Descargas

Descargue la última versión de los datos como un Archivo Darwin Core (DwC-A) o los metadatos como EML o RTF:

Datos como un archivo DwC-A descargar 61 registros en Inglés (12 kB) - Frecuencia de actualización: no planeado
Metadatos como un archivo EML descargar en Inglés (11 kB)
Metadatos como un archivo RTF descargar en Inglés (11 kB)

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:

Davey N, Mackay K (2021): Pelorus Sound / Te Hoiere (HS66) Hydrographic Survey Marine Mammal Observations. v1.3. The National Institute of Water and Atmospheric Research (NIWA). Dataset/Samplingevent. https://nzobisipt.niwa.co.nz/resource?r=hs66_mmo&v=1.3

Derechos

Los usuarios deben respetar los siguientes derechos de uso:

El publicador y propietario de los derechos de este trabajo es The National Institute of Water and Atmospheric Research (NIWA). This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.

Registro GBIF

Este recurso ha sido registrado en GBIF con el siguiente UUID: c023c854-3bc9-43af-af49-c2290b809710.  The National Institute of Water and Atmospheric Research (NIWA) publica este recurso, y está registrado en GBIF como un publicador de datos avalado por GBIF New Zealand.

Palabras clave

Samplingevent; Samplingevent

Contactos

¿Quién creó el recurso?:

Niki Davey
Marine Mammal Observer
NIWA
P.O. Box 893
Nelson
NZ
Kevin Mackay
Principal Technician
NIWA
Private Bag 14-901
6022 Wellington
2721
NZ

¿Quién puede resolver dudas acerca del recurso?:

Niki Davey
Marine Mammal Observer
NIWA
P.O. Box 893
Nelson
NZ

¿Quién documentó los metadatos?:

Niki Davey
Marine Mammal Observer
NIWA
P.O. Box 893
Nelson
NZ

¿Quién más está asociado con el recurso?:

Usuario
Kevin Mackay

Cobertura geográfica

Pelorus Sound / Te Hoiere, Admiralty Bay and French Pass. Marlborough Sounds, New Zealand

Coordenadas límite Latitud Mínima Longitud Mínima [-41,089, 173,764], Latitud Máxima Longitud Máxima [-40,908, 174,076]

Cobertura temporal

Fecha Inicial / Fecha Final 2019-11-01 / 2020-07-25

Métodos de muestreo

Marine Mammal Observations from a hydrographic multibeam survey

Área de Estudio Pelorus Sound / Te Hoiere, Admiralty Bay and French Pass. Marlborough Sounds, New Zealand
Control de Calidad The crew on board survey vessels underwent a briefing with NIWA’s senior experienced trained Marine Mammal Observer (MMO) Niki Davey. MMO sightings were matched against photography and WORMS for validation of species identification. Positions were plotted within a GIS to ensure geographic integrity

Descripción de la metodología paso a paso:

  1. The crew on board the survey vessels underwent a briefing with NIWA’s senior experienced trained Marine Mammal Observer (MMO) Niki Davey. Marine mammal observations and subsequent sightings are only required when the multibeam is in operation (on effort). However any opportunistic sightings made at any other time were encouraged to be recorded as well. During this meeting the crew were briefed in the following areas to ensure a rigorous as possible approach to recording marine mammal sightings is being taken: * Identification: An identification booklet outlining the features of the 8 important marine mammal species known in the Marlborough Sounds was provided to each vessel. This includes notes on fin shape, beak presence/absence, colouration and an indication of adult size. The species we can expect the crew to encounter are Bottlenose, Dusky, Hectors, common dolphins, and Killer (Orca), humpback, southern right whales. Also to be recorded was the New Zealand fur seal. * Logsheets: These were provided for the crew and covered the general areas of animal number and species, environment at sea, location and animal details. The priority fields included GPS location (of vessel when sighting made), species to best of ability, number of animals and whether a photo was taken. Each log sheet field was discussed during the briefing. * Photography: A camera was provided for the crew on the survey vessels. Images of the animals were encouraged when it was possible. Emphasis was made on beaks and fins. * Environmental: Laminated sheets covering the Beaufort scale was provided for additional information in the environmental section. * Observations: The crew were also briefed on the difficulties in spotting marine mammals up against a coastal back drop such as the Sounds and recommendations were to look using both the naked eye and with binoculars. Also vigilance was emphasised when the vessels enter bays and come around headlands. Also known areas of resident populations have been noted with extra vigilance encouraged here also. * Reporting: The logsheets were scanned and sent to the MMO on a weekly basis.

Metadatos adicionales

marine, harvested by iOBIS

Identificadores alternativos c023c854-3bc9-43af-af49-c2290b809710
https://nzobisipt.niwa.co.nz/resource?r=hs66_mmo