説明
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.
データ レコード
この オカレンス（観察データと標本) リソース内のデータは、1 つまたは複数のデータ テーブルとして生物多様性データを共有するための標準化された形式であるダーウィン コア アーカイブ (DwC-A) として公開されています。 コア データ テーブルには、51 レコードが含まれています。
この IPT はデータをアーカイブし、データ リポジトリとして機能します。データとリソースのメタデータは、 ダウンロード セクションからダウンロードできます。 バージョン テーブルから公開可能な他のバージョンを閲覧でき、リソースに加えられた変更を知ることができます。
バージョン
次の表は、公にアクセス可能な公開バージョンのリソースのみ表示しています。
引用方法
研究者はこの研究内容を以下のように引用する必要があります。:
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
権利
研究者は権利に関する下記ステートメントを尊重する必要があります。:
パブリッシャーとライセンス保持者権利者は The National Institute of Water and Atmospheric Research (NIWA)。 This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.
GBIF登録
このリソースをはGBIF と登録されており GBIF UUID: 1c015688-44a2-4de3-bb88-1995eac2180aが割り当てられています。 GBIF New Zealand によって承認されたデータ パブリッシャーとして GBIF に登録されているThe National Institute of Water and Atmospheric Research (NIWA) が、このリソースをパブリッシュしました。
キーワード
Occurrence; Observation
連絡先
- メタデータ提供者 ●
- 最初のデータ採集者 ●
- 連絡先
地理的範囲
South Taranaki Bight, New Zealand
| 座標（緯度経度） | 南 西 [-43.509, 170.23], 北 東 [-34.755, 176.963] |
|---|
生物分類学的範囲
Blue whales
| Species | Balaenoptera musculus |
|---|
時間的範囲
| 開始日 / 終了日 | 1893-01-21 / 2012-05-03 |
|---|
収集方法
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.
| Study Extent | 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) |
|---|
Method step description:
- 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.
書誌情報の引用
- 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
追加のメタデータ
marine, harvested by iOBIS