SAMPLINGEVENT

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

Dernière version Publié par The National Institute of Water and Atmospheric Research (NIWA) le 21 décembre 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).... plus

Description

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.

Enregistrements de données

Les données de cette ressource données d'échantillonnage 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 61 enregistrements.

2 tableurs de données d'extension existent également. Un enregistrement d'extension fournit des informations supplémentaires sur un enregistrement du cœur de standard (core). Le nombre d'enregistrements dans chaque tableur de données d'extension est illustré ci-dessous.

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

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.

Téléchargements

Téléchargez la dernière version de la ressource en tant qu'Archive Darwin Core (DwC-A), ou les métadonnées de la ressource au format EML ou RTF :

Données sous forme de fichier DwC-A (zip) télécharger 61 enregistrements dans Anglais (12 kB) - Fréquence de mise à jour: non planifié
Métadonnées sous forme de fichier EML télécharger dans Anglais (11 kB)
Métadonnées sous forme de fichier RTF télécharger dans Anglais (11 kB)

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:

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

Droits

Les chercheurs doivent respecter la déclaration de droits suivante:

L’éditeur et détenteur des droits de cette ressource est The National Institute of Water and Atmospheric Research (NIWA). This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.

Enregistrement GBIF

Cette ressource a été enregistrée sur le portail GBIF, et possède l'UUID GBIF suivante : c023c854-3bc9-43af-af49-c2290b809710.  The National Institute of Water and Atmospheric Research (NIWA) publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec l'approbation du GBIF New Zealand.

Mots-clé

Samplingevent; Samplingevent

Contacts

Personne ayant créé cette ressource:

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

Personne pouvant répondre aux questions sur la ressource:

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

Personne ayant renseigné les métadonnées:

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

Autres personnes associées à la ressource:

Utilisateur
Kevin Mackay

Couverture géographique

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

Enveloppe géographique Sud Ouest [-41,089, 173,764], Nord Est [-40,908, 174,076]

Couverture temporelle

Date de début / Date de fin 2019-11-01 / 2020-07-25

Méthodes d'échantillonnage

Marine Mammal Observations from a hydrographic multibeam survey

Etendue de l'étude Pelorus Sound / Te Hoiere, Admiralty Bay and French Pass. Marlborough Sounds, New Zealand
Contrôle qualité 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

Description des étapes de la méthode:

  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.

Métadonnées additionnelles

marine, harvested by iOBIS

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