From 1997 to 2008, a research programme to determine if fish assemblages in the New Zealand region could be classified into clearly identifiable communities based on their associations with each other and with environmental features was undertaken. This dataset is taken from the resulting fish communities database. These data have been used to show geographical and depth distributions of species from all research tows within the New Zealand EEZ since 2008.
The data in this occurrence 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 495,600 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.
The table below shows only published versions of the resource that are publicly accessible.
How to cite
Researchers should cite this work as follows:
NIWA (2014). New Zealand fish and squid distributions from research bottom trawls. Southwestern Pacific OBIS, National Institute of Water and Atmospheric Research (NIWA), Wellington, New Zealand, 486781 records, Online http://nzobisipt.niwa.co.nz/resource.do?r=obisprovider released on May 8, 2014.
Researchers should respect the following rights statement:
The publisher and rights holder of this work is The National Institute of Water and Atmospheric Research (NIWA). This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.
This resource has been registered with GBIF, and assigned the following GBIF UUID: 2a636fd6-dc73-49c0-9e5b-26bd05532313. The National Institute of Water and Atmospheric Research (NIWA) publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF New Zealand.
New Zealand EEZ
|Bounding Coordinates||South West [-57.5, -170], North East [-24, 157]|
|Start Date / End Date||1961-03-16 / 2008-07-19|
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).
|Study Extent||Fisheries research trawls since 1961 over the New Zealand EEZ area.|
|Quality Control||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.|
Method step description:
- 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.
- Anderson O.F., Bagley, N.W., Hurst, R.J., Francis, M.P., Clark, M.R., & McMillan, P.J. 1998: Atlas of New Zealand fish and squid distributions from research bottom trawls. NIWA Technical Report 42. 303 p. Anderson et al. (1998)
marine, harvested by iOBIS