說明
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.
資料紀錄
此資源sampling event的資料已發佈為達爾文核心集檔案（DwC-A），其以一或多組資料表構成分享生物多樣性資料的標準格式。 核心資料表包含 61 筆紀錄。
亦存在 2 筆延伸集的資料表。延伸集中的紀錄補充核心集中紀錄的額外資訊。 每個延伸集資料表中資料筆數顯示如下。
此 IPT 存放資料以提供資料儲存庫服務。資料與資源的詮釋資料可由「下載」單元下載。「版本」表格列出此資源的其它公開版本，以便利追蹤其隨時間的變更。
版本
以下的表格只顯示可公開存取資源的已發布版本。
如何引用
研究者應依照以下指示引用此資源。:
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
權利
研究者應尊重以下權利聲明。:
此資料的發布者及權利單位為 The National Institute of Water and Atmospheric Research (NIWA)。 This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.
GBIF 註冊
此資源已向GBIF註冊，並指定以下之GBIF UUID: c023c854-3bc9-43af-af49-c2290b809710。 The National Institute of Water and Atmospheric Research (NIWA) 發佈此資源，並經由GBIF New Zealand同意向GBIF註冊成為資料發佈者。
關鍵字
Samplingevent; Samplingevent
聯絡資訊
- 元數據提供者 ●
- 出處 ●
- 連絡人
http://orcid.org/0000-0002-7372-8540
- 出處 ●
- 使用者
地理涵蓋範圍
Pelorus Sound / Te Hoiere, Admiralty Bay and French Pass. Marlborough Sounds, New Zealand
| 界定座標範圍 | 緯度南界 經度西界 [-41.089, 173.764], 緯度北界 經度東界 [-40.908, 174.076] |
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時間涵蓋範圍
| 起始日期 / 結束日期 | 2019-11-01 / 2020-07-25 |
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取樣方法
Marine Mammal Observations from a hydrographic multibeam survey
| 研究範圍 | Pelorus Sound / Te Hoiere, Admiralty Bay and French Pass. Marlborough Sounds, New Zealand |
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| 品質控管 | 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 |
方法步驟描述:
- 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.
額外的詮釋資料
marine, harvested by iOBIS
| 替代的識別碼 | c023c854-3bc9-43af-af49-c2290b809710 |
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| https://nzobisipt.niwa.co.nz/resource?r=hs66_mmo |