Descrição
This dataset contains data from research trawls that have occurred since 2008 and are stored the NIWA/MPI Trawl database These data results from data collected by research trawl surveys on research vessels and chartered commercial fishing vessels. Trawl surveys are a major tool used by research scientists for stock assessment. They are used to estimate basic parameters of commercial fish populations, including biomass, sex ratio, and the proportion of sexually mature fish, and the distribution of ages and lengths in the population. These parameters may be used in estimating mortality and growth rates.
This dataset is a continuation of data from the NIWA/MPI Trawl database that was initially released as the New Zealand fish and squid distributions from research bottom trawls 1964-2008 available at https://nzobisipt.niwa.co.nz/resource?r=obisprovider
Registros de Dados
Os dados deste recurso de evento de amostragem foram publicados como um Darwin Core Archive (DwC-A), que é o formato padronizado para compartilhamento de dados de biodiversidade como um conjunto de uma ou mais tabelas de dados. A tabela de dados do núcleo contém 13.583 registros.
Também existem 2 tabelas de dados de extensão. Um registro de extensão fornece informações adicionais sobre um registro do núcleo. O número de registros em cada tabela de dados de extensão é ilustrado abaixo.
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.
Versões
A tabela abaixo mostra apenas versões de recursos que são publicamente acessíveis.
Como citar
Pesquisadores deveriam citar esta obra da seguinte maneira:
SWPRON (2017). Catch data from New Zealand research trawls. Southwestern Pacific OBIS, National Institute of Water and Atmospheric Research (NIWA), Wellington, New Zealand, 15157 records, Online http://nzobisipt.niwa.co.nz/resource.do?r=trawl released on April 19, 2017.
Direitos
Pesquisadores devem respeitar a seguinte declaração de direitos:
O editor e o detentor dos direitos deste trabalho é Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node. This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.
GBIF Registration
Este recurso foi registrado no GBIF e atribuído ao seguinte GBIF UUID: 421890f7-e909-40ed-a573-b1c9529a55fa. Southwestern Pacific Ocean Biogeographic Information System (OBIS) Node publica este recurso, e está registrado no GBIF como um publicador de dados aprovado por Ocean Biodiversity Information System.
Palavras-chave
Occurrence
Contatos
- Provedor Dos Metadados ●
- Originador ●
- Usuário
- Ponto De Contato
Cobertura Geográfica
New Zealand region
| Coordenadas delimitadoras | Sul Oeste [-57, -176,3], Norte Leste [-24, 157] |
|---|
Cobertura Temporal
| Data Inicial | 2008-01-01 |
|---|
Métodos de Amostragem
Most records are from random bottom trawls, but there are also records from midwater trawls, scampi trawls and non-random tows (such as gear trials and target tows).
| Área de Estudo | Fisheries research trawls since 2008 over the New Zealand EEZ area |
|---|---|
| Controle de Qualidade | The scientific names have been mapped to the World Register of Marine Species (WoRMS), using the online taxon match tool. All sampling locations have been plotted on a map to perform a visual check. The most important check would be to see if all sampling locations are (1) in the marine and/or brackish environment and (2) within the described sampling area. |
Descrição dos passos do método:
- Only successful trawl records were selected. All "foul" shots are excluded as the net may have ripped and some species may have escaped on hauling. All species identification have been validated and outliers based on geographic and depth distributions have been checked.
- Catch weights (kg) are added to the "occurrenceRemarks" field. -Sea temperature recorded by trawl headline sensors are added to the "dynamicProperties" field.
Metadados Adicionais
marine, harvested by iOBIS
| Identificadores alternativos | 421890f7-e909-40ed-a573-b1c9529a55fa |
|---|---|
| https://nzobisipt.niwa.co.nz/resource?r=trawl |