da01febb-0df5-4a55-a647-e2f9337cf933 eng utf8 dataset custodian NIWA National Institute of Water and Atmospheric Research +64 4 386 0300 voice +64 4 386 0574 facsimile 301 Evans Bay Parade Hataitai Wellington 6021 New Zealand curator@niwa.co.nz http://www.niwa.co.nz Website of the National Institute of Water and Atmospheric Research, New Zealand - experts in environmental science Data curator 2016-06-13T09:55:48 creation ISO 19115-3 urn:ogc:def:crs:EPSG::4326 OGP NZST/NZDT Catch data from New Zealand research trawls since 2008 2019-10-15T09:01:00 creation 2019-10-15T09:01:00 revision 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 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. completed resourceProvider NIWA +64 4 386 0300 voice +64 4 386 0574 facsimile kevin.mackay@niwa.co.nz Kevin Mackay Marine Data Manager vector biota oceans New Zealand Region 157,-24 200,-24 200,-57.5 157,-57.5 157,-24 157.00 180.00 -57.50 -24.00 2008-07-19T00:00:00 2019-10-15T00:00:00 https://dc.niwa.co.nz:/niwa_dc/srv/api/records/7248815b-8432-243b-f318-33dfc540680c/attachments/chilean_hoki_credit_neil_bagley_NIWA_s.png thumbnail png https://dc.niwa.co.nz:/niwa_dc/srv/api/records/7248815b-8432-243b-f318-33dfc540680c/attachments/chilean_hoki_credit_neil_bagley_NIWA.png large_thumbnail png trawl surveys unclassified eng https://dc.niwa.co.nz:/niwa_dc/srv/eng//metadata.show?uuid=da01febb-0df5-4a55-a647-e2f9337cf933 WWW:LINK-1.0-http--metadata-URL Point of truth URL of this metadata record https://nzobisipt.niwa.co.nz/resource?r=trawl Download from the Southwest Pacific OBIS server 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. 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. dataset unclassified