Protected species bycatch in New Zealand fisheries

最新版本 由 Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node 發佈於 Feb 12, 2020 Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node

Seabirds, marine mammals, and turtles are caught during commercial fishing operations within the New Zealand Exclusive Economic Zone. In order to monitor the impacts of fishing on these species, New Zealand government observers on fishing vessels record any protected species bycatch incidents that occur. Observer data on protected species captures are maintained by the Ministry for Primary Industries, with identification of captured animals carried out by the Department of Conservation. The data have been summarised in a series of reports, with the most recent report covering the period from 2002–03 to the end of the 2008–09 fishing year (Abraham and Thompson 2011b).

This dataset provides a summary of protected species bycatch in trawl and longline fisheries, from the 2002–03 to 2012–13 fishing year (fishing years run from October 1 to September 30).

Observers are only present on some fishing vessels. To estimate total captures in a fishery, it is necessary to use statistical methods to extrapolate from the observed fishing to the unobserved fishing. The total observable captures are an estimate of the captures that would have been reported, had observers been present on all fishing vessels. There may be additional mortalities (such as birds that are struck by fishing gear but not brought on board the vessel) that are not recorded by observers. These are referred to as ‘cryptic mortalities’ and are not included in the estimates of total captures, nor is there any evaluation of potential survival of seabirds recorded as captured but subsequently released alive. The methods used for the estimation follow those described in technical reports on bycatch estimation for seabirds (Abraham and Thompson 2011a, Abraham et al. 2013), and marine mammals (Thompson et al. 2013).

####Notes about some Fields: - **fishing_year** the fishing year of the capture. Fishing years run from 1 October to 30 September; - **datetime** the date and time of the capture. All times are in New Zealand Standard Time (GMT+12); - **status** whether the animal was alive or dead; - **identification** how the identification was made (necropsy: by necropsy of the dead animal; photograph: from an expert inspection of a photograph of the capture; imputation: imputed by correcting the observer code using necropsy and photographic identifications of other captures with the same observer identification; as reported by the observer); - **method** the fishing method (surface longline; bottom longline; trawl; set net; or purse seine); - **target** the target species reported by the fisher; - **vessel_size** the length class of the vessel (a range in m).

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 10,307 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 10,307 紀錄 在 English 中 (445 KB) - Update frequency: 依其他週期更新
元數據EML檔 下載 在 English 中 (11 KB)
元數據RTF文字檔 下載 在 English 中 (10 KB)

版本

The table below shows only published versions of the resource that are publicly accessible.

如何引用

研究者應依照以下指示引用此資源。:

Abraham E R, Thompson F N (2016): Protected species bycatch in New Zealand fisheries. v1.6. Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node. Dataset/Occurrence. https://nzobisipt.niwa.co.nz/resource?r=protected_species_bycatch_nz&v=1.6

Rights

研究者應尊重以下權利聲明。:

The publisher and rights holder of this work is Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node. Crown copyright ©. Copyright material on the Protected Species Captures website is protected by copyright owned by the Ministry for Primary Industries on behalf of the Crown. Unless indicated otherwise for specific items or collections of content (either below or within specific items or collections), this copyright material is licensed for re-use under a Creative Commons Attribution (CC-BY) 4.0 License. In essence, you are free to copy, distribute and adapt the material, as long as you attribute it to Ministry for Primary Industries and abide by the other licence terms.

GBIF 註冊

此資源已向GBIF註冊,並指定以下之GBIF UUID: f55751e3-ac05-4f11-b70f-7b81cb397452。  Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node 發佈此資源,並經由Ocean Biogeographic Information System同意向GBIF註冊成為資料發佈者。

關鍵字

Occurrence; Observation

聯絡資訊

資源建立者:

E. R. Abraham
CEO
Dragonfly Data Science PO Box 27535 6141 Wellington New Zealand NZ
http://www.dragonfly.co.nz/
F. N. Thompson
co-author
Dragonfly Data Science PO Box 27535 6141 Wellington NZ
http://www.dragonfly.co.nz/

可回覆此資源相關問題者:

Edward Abraham
CEO
Dragonfly Data Science PO Box 27535 6141 Wellington New Zealand NZ
http://www.dragonfly.co.nz/

元數據填寫者:

Edward Abraham
CEO
Dragonfly Data Science PO Box 27535 6141 Wellington New Zealand NZ
http://www.dragonfly.co.nz/

與此資源的相關者:

使用者
Kevin Mackay

地理涵蓋範圍

New Zealand Exclusive Economic Zone

界定座標範圍 緯度南界 經度西界 [-57, -165], 緯度北界 經度東界 [-24, 157]

時間涵蓋範圍

起始日期 / 結束日期 2002-10-01 / 2016-09-30

引用文獻

  1. Abraham E. R., Thompson F. N. (2014). Captures of turtles in trawl fisheries, in the New Zealand Exclusive Economic Zone, from 2002–03 to 2012–18. https://data.dragonfly.co.nz/psc/v20140201/turtles/trawl/all-vessels/eez/all/
  2. Abraham E. R., Thompson F. N. (2014). Captures of all birds in trawl fisheries, in the New Zealand Exclusive Economic Zone, from 2002–03 to 2012–18. https://data.dragonfly.co.nz/psc/v20140201/birds/trawl/all-vessels/eez/all/
  3. Abraham E. R., Thompson F. N. (2014). Captures of whales and dolphins in trawl fisheries, in the New Zealand Exclusive Economic Zone, from 2002–03 to 2012–18. https://data.dragonfly.co.nz/psc/v20140201/whales-and-dolphins/trawl/all-vessels/eez/all/
  4. Abraham E. R., Thompson F. N. (2014). Captures of New Zealand sea lion in trawl fisheries, in the New Zealand Exclusive Economic Zone, from 2002–03 to 2012–18. https://data.dragonfly.co.nz/psc/v20140201/new-zealand-sea-lion/trawl/all-vessels/eez/all/
  5. Abraham E. R., Thompson F. N. (2014). Captures of New Zealand fur seal in trawl fisheries, in the New Zealand Exclusive Economic Zone, from 2002–03 to 2012–18. https://data.dragonfly.co.nz/psc/v20140201/new-zealand-fur-seal/trawl/all-vessels/eez/all/
  6. Abraham E. R., Thompson F. N. (2014). Captures of other seals in trawl fisheries, in the New Zealand Exclusive Economic Zone, from 2002–03 to 2012–18. https://data.dragonfly.co.nz/psc/v20140201/other-seals/trawl/all-vessels/eez/all/

額外的元數據

marine, harvested by iOBIS

替代的識別碼 f55751e3-ac05-4f11-b70f-7b81cb397452
https://nzobisipt.niwa.co.nz/resource?r=protected_species_bycatch_nz