説明
Historically, southern right whales were widely distributed in New Zealand waters. This population, was driven to commercial extinction following extensive exploitation during the early 19th century (Dawbin 1986). It was further depleted by illegal Soviet hunting in 1950-1970 (Tormosov et al. 1998). While right whale sightings around mainland New Zealand remain rare, up to 165 whales can be found at the Auckland Is in a single day during winter. Despite what appears to be adequate habitat along the eastern coastline, the whales' distribution is largely limited to Port Ross, Laurie Harbour and waters around Enderby I. The relatively small area where so many whales congregate means that at peak season the density of whales at the Auckland Is is very high (approximately 8 whales/km2). The residency period extends from at least early May to at least the end of September, with peak numbers in July and August.
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、546 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。:
Patenaude N (2019): Southern right whales wintering in the Auckland Islands, 1995-1998. v1.0. Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node. Dataset/Occurrence. https://nzobisipt.niwa.co.nz/resource?r=southernrightwhales_auck&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 Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node。 This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.
GBIF登録
このリソースは GBIF に登録されていません。
キーワード
Occurrence
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
Auckland Islands
| 座標（緯度経度） | 南 西 [-50.611, 166.124], 北 東 [-50.456, 166.385] |
|---|
生物分類学的範囲
Southern right whale
| Species | Eubalaena australis |
|---|
時間的範囲
| 開始日 / 終了日 | 1995-08-01 / 1998-08-31 |
|---|
収集方法
In order to determine the minimum number of southern right whales visiting the Auckland Is each winter, combined non-systematic small boat and shore-based surveys of right whales were conducted within Port Ross and surrounding areas. The boat surveys were conducted along the centre-line of the harbour, and visibility (during most surveys) allowed scanning to the extent of both coastlines. Simultaneously, other observers conducted shore-based counts from several elevated vantage points on Enderby and Auckland Is.
| Study Extent | Port Ross, Laurie Harbour and waters around Enderby Island, Auckland Islands, New Zealand |
|---|
Method step description:
- During these surveys, a sighting was considered to include only one individual unless more than one individual could be counted at the surface within one and a half whale body lengths. Thus these censuses represent a minimum estimate of the number of whales observed on each occasion
- For all observations, an animal was judged to be a calf when the portion visible at the surface was less than half of the length of an accompanying adult. The accompanying adult was assumed to be the cow.
書誌情報の引用
- Patenaude, NJ., 2000. Southern right whales wintering in the Auckland Islands. Conservation Advisory Science Notes No. 321, Department of Conservation, Wellington. https://www.doc.govt.nz/globalassets/documents/science-and-technical/casn321.pdf
追加のメタデータ
marine, harvested by iOBIS