Protected species bycatch in New Zealand fisheries

Última versión Publicado por Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node en 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).

Registros

Los datos en este registros biológicos recurso han sido publicados como Archivo Darwin Core(DwC-A), el cual es un formato estándar para compartir datos de biodiversidad como un conjunto de una o más tablas de datos. La tabla de datos del core contiene 10,307 registros.

Este IPT archiva los datos, sirviendo así como repositorio de datos. Los datos y metadatos están disponibles para descargar en la sección de descargas. La tabla de versiones muestra otras versiones del recurso que se han hecho accesibles al público y permite el seguimiento de los cambios hechos al recurso en el tiempo.

Descargas

Descargue la última versión de los datos como un Archivo Darwin Core (DwC-A) o los metadatos como EML o RTF:

Datos como un archivo DwC-A descargar 10,307 registros en Inglés (445 KB) - Frecuencia de actualización: irregular
Metadatos como un archivo EML descargar en Inglés (11 KB)
Metadatos como un archivo RTF descargar en Inglés (10 KB)

Versiones

La siguiente tabla muestra sólo las versiones publicadas del recurso que son de acceso público.

¿Cómo referenciar?

Los usuarios deben citar este trabajo de la siguiente manera:

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

Derechos

Los usuarios deben respetar los siguientes derechos de uso:

El publicador y propietario de los derechos de este trabajo es 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.

Registro GBIF

Este recurso ha sido registrado en GBIF con el siguiente UUID: f55751e3-ac05-4f11-b70f-7b81cb397452.  Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node publica este recurso, y está registrado en GBIF como un publicador de datos avalado por Ocean Biogeographic Information System.

Palabras Clave

Occurrence; Observation

Contactos

¿Quién creó el recurso?:

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/

¿Quién puede resolver dudas acerca del recurso?:

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

¿Quién documentó los metadatos?:

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

¿Quién más está asociado con el recurso?:

Usuario
Kevin Mackay

Cobertura Geográfica

New Zealand Exclusive Economic Zone

Coordenadas límite Latitud Mínima Longitud Mínima [-57, -165], Latitud Máxima Longitud Máxima [-24, 157]

Cobertura Temporal

Fecha Inicial / Fecha Final 2002-10-01 / 2016-09-30

Referencias Bibliográficas

  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/

Metadatos Adicionales

marine, harvested by iOBIS

Identificadores Alternativos f55751e3-ac05-4f11-b70f-7b81cb397452
https://nzobisipt.niwa.co.nz/resource?r=protected_species_bycatch_nz