Southern right whales wintering in the Auckland Islands, 1995-1998

最新版本 由 Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node 發佈於 Dec 29, 2019 Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node

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.

Data Records

The data in this 出現紀錄 resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 546 records.

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.

下載

下載最新版本的Darwin Core Archive (DwC-A)資源,或資源元數據的EML或RTF文字檔。

DwC-A資料集 下載 546 紀錄 在 English 中 (18 KB) - Update frequency: 無計畫更新
元數據EML檔 下載 在 English 中 (7 KB)
元數據RTF文字檔 下載 在 English 中 (10 KB)

版本

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如何引用

研究者應依照以下指示引用此資源。:

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

Rights

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The publisher and rights holder of this work is Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node. This work is licensed under a Creative Commons Attribution (CC-BY) 4.0 License.

GBIF 註冊

此資源尚未向GBIF註冊

關鍵字

Occurrence

聯絡資訊

資源建立者:

Nathalie Patenaude
Researcher
School of Biological Sciences, University of Auckland Auckland NZ

可回覆此資源相關問題者:

Nathalie Patenaude
Researcher
School of Biological Sciences, University of Auckland Auckland NZ

元數據填寫者:

Nathalie Patenaude
Researcher
School of Biological Sciences, University of Auckland Auckland NZ

地理涵蓋範圍

Auckland Islands

界定座標範圍 緯度南界 經度西界 [-50.611, 166.124], 緯度北界 經度東界 [-50.456, 166.385]

分類群涵蓋範圍

Southern right whale

Species  Eubalaena australis

時間涵蓋範圍

起始日期 / 結束日期 1995-08-01 / 1998-08-31

取樣方法

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.

研究範圍 Port Ross, Laurie Harbour and waters around Enderby Island, Auckland Islands, New Zealand

方法步驟描述:

  1. 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
  2. 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.

引用文獻

  1. 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

額外的元數據

marine, harvested by iOBIS

替代的識別碼 https://nzobisipt.niwa.co.nz/resource?r=southernrightwhales_auck