說明
Blue whale distribution in the Southern Hemisphere is poorly understood. Their survival is dependent on the ability to reliably encounter large aggregations of euphausiid prey. Therefore, documenting and protecting blue whale foraging grounds is fundamental to enhancing their recovery. Various data sources are compiled here to support the hypothesis that the South Taranaki Bight, between the north and south islands of New Zealand, is used as a foraging ground by blue whales for a common euphausiid prey that aggregate as a function of a nearby coastal upwelling system.
It is difficult to distinguish between an Antarctic and pygmy blue whale without genetic analysis and therefore sightings and strandings in the STB region were not recorded to subspecies. Hereafter, the term ‘blue whale’ refers to both subspecies in the Southern Hemisphere unless otherwise described to subspecies.
資料紀錄
此資源出現紀錄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 51 筆紀錄。
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。:
Torres L G (2024). Blue whales sighting to 2013 in the South Taranaki Bight, New Zealand. Version 1.0. The National Institute of Water and Atmospheric Research (NIWA). Occurrence dataset. https://nzobisipt.niwa.co.nz/resource?r=bluewhale_forgaging_stbnz&v=1.0
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: 1c015688-44a2-4de3-bb88-1995eac2180a。 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
Occurrence; Observation
聯絡資訊
- 元數據提供者 ●
- 出處 ●
- 連絡人
- Marine Ecologist
- Private Bay 14901, Kilbirnie
地理涵蓋範圍
South Taranaki Bight, New Zealand
| 界定座標範圍 | 緯度南界 經度西界 [-43.509, 170.23], 緯度北界 經度東界 [-34.755, 176.963] |
|---|
分類群涵蓋範圍
Blue whales
| Species | Balaenoptera musculus |
|---|
時間涵蓋範圍
| 起始日期 / 結束日期 | 1893-01-21 / 2012-05-03 |
|---|
取樣方法
Within this region, blue whale sighting and stranding records were compiled to examine the frequency, seasonality and persistence of blue whale presence. Modern (since 1979) records of blue whale sightings within the STB from the following sources of cetacean sighting records were examined: (1) a database curated by the New Zealand Department of Conservation (DOC) in which each sighting is validated; (2) sightings recorded by trained observers aboard transiting ships between New Zealand and overseas ports collated between 1979 and 1999; (3) sightings recorded by scientists and vessel captains at the National Institute of Water and Atmospheric Research Ltd (NIWA) and photo verified by the author (L. Torres unpubl. data); (4) sightings recorded during two recent seismic surveys with on-board marine mammal observers in the STB between 9 May and 22 July 2011, which consisted of 519.7 h of visual surveys (Blue Planet Marine); and (5) anecdotal sightings by a tugboat captain and a DOC ranger in October 2007, which were followed-up with personal conversations.
| 研究範圍 | The South Taranaki Bight (STB) encompasses 55,835 km2 and lies between the north and south islands of New Zealand (38°49'S to 40°53'S, 171°37'E to 175°13'E) |
|---|
方法步驟描述:
- Additionally, the distribution and density of incidental blue whale sightings from the DOC and Cawthorn datasets were compared between the STB and all of New Zealand. Geographic locations for all these sightings were recorded on-site by the observers. Also investigated were stranding records of blue whales within the STB and all of New Zealand held in the DOC whale stranding database.
引用文獻
- Torres, L. (2013). Evidence for an unrecognised blue whale foraging ground in New Zealand. New Zealand Journal of Marine and Freshwater Research, 47(2), 235–248. doi.org/10.1080/00288330.2013.773919
額外的詮釋資料
marine, harvested by iOBIS