ef606881-8949-445b-a200-1187ef5356ad custodian NIWA National Institute of Water & Atmospheric Research curator@niwa.co.nz http://www.niwa.co.nz WWW:LINK-1.0-http--link Link to NIWA website Data curator 2012-08-02T13:23:28 creation ISO 19115-3 Survey of scallops and dredge oysters in Golden Bay, Tasman Bay, and the Marlborough Sounds 2012-07-24T12:18:00 revision The Challenger Scallop Enhancement Company Ltd. (CSEC) conducts an annual stratified survey for scallops (Pecten novaezelandiae) and dredge oysters (Ostrea chilensis) in the Challenger fishery area (Golden Bay, Tasman Bay and the Marlborough Sounds). Sampling frequency: annual (Apr/May/Jun). Surveys began in 1994 and are ongoing. The nmber of sites varies depending on survey year. Three regions: 3 to 34 strata per region. Overall, between 150 and 526 dredge tows (stations) were completed per survey. The total number of samples is 6356. Extent of site: dredged area (per station) varies from 379m2 to 3960m2. Depth of sampling: 5-71 m (chart datum). Number of replicates: 1 to 70 stations per stratum. Measured variables: Scallops (counts, weights, size frequency subsample), dredge oysters (counts, weights), bycatch (counts, weights: type of data varies depending on survey year). Environmental (depth, windforce, tow geographic position, tow time, dredge fullness). Sampling protocol & QA: Sampling protocol and initial QA set by NIWA, survey conducted by industry (CSEC). Estimation of scallop and oyster biomass. Challenger Scallop Enhancement Company Ltd. (CSEC), National Institute of Water & Atmospheric Research (NIWA) onGoing principalInvestigator NIWA National Institute of Water & Atmospheric Research + 64 9 375 2050 voice + 64 9 375 2051 facsimile 41 Market Place Auckland Central 1010 New Zealand james.williams@niwa.co.nz Dr James Williams biota Golden Bay, Tasman Bay, and Marlborough Sounds 172.500 174.501 -41.500 -40.500 biodiversity benthic soft metric invertebrate epifauna subtidal marine coastal ecological dredge size frequency scallop oyster taxon TBGB voice facsimile eng utf8 https://dc.niwa.co.nz/niwa_dc/srv/metadata/ef606881-8949-445b-a200-1187ef5356ad WWW:LINK-1.0-http--metadata-URL Point of truth URL of this metadata record ftp://ftp.niwa.co.nz/os2020/TOTS/SCA7_survey_dataset.xls WWW:LINK-1.0-http--downloaddata Excel spreadsheet of the SCA7 survey data.