82eb7645-f010-855e-12c8-ce5416e15360 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 - Enhancing the benefits of New Zealand's natural resources. Data curator 2015-06-18T10:59:00 creation ISO 19115-3 urn:ogc:def:crs:EPSG::4326 OGP NZST/NZDT Add-on of suspended particulate matter (SPM) analysis to the NRWQN 2015-05-28T21:12:00 creation 2015-05-28T21:12:00 revision The National Rivers Water Quality Network (NRWQN) has never included suspended particulate matter analyses in all 26years of its existence, although optical proxies (visual clarity; turbidity) are measured routinely. The purpose of this add-on to the NRWQN was to 'calibrate' those optical proxies to total suspended sediment (TSS) in particular rivers - to confirm the original supposition in design of the NRWQN that routine, ongoing measurement of TSS would be too expensive and not sustainable when most visits to sites intercept rivers in baseflow when TSS is relatively low and sediment flux very low. The opportunity was taken during this add-on also to measure organic content of SPM in rivers (as volatile suspended sediment; VSS) and the nutrient (N and C content) of this organic matter (particulate organic carbon, POC; particulate organic nitrogen, PON). The TSS data in the dataset has already been published (along with correlating NRWQN data) by Davies-Colley et al. (2014) and Ballantine et al. (2014). [Ballantine, D.J.; Hughes,A.O.; Davies-Colley,R.J.(2014).Mutual relationships of suspended sediment, turbidity and visual clarity in New Zealand rivers. Sediment Dynamics from the Summit to the Sea Proceedings of a symposium held in New Orleans, Louisiana, USA,11–14 December 2014)(IAHS Publ. 367, 2014). doi:10.5194/piahs-367-265-2015 Davies-Colley, R.J.; Ballantine, D.J.; Elliott, S.H.; Swales, A.; Hughes, A.O.; Gall, M.P. (2014).Light attenuation - a more effective basis for the management of fine suspended sediment than mass concentration? Water Science and Technology 69(9):1867-74. doi: 10.2166/wst.2014.096.] 1. To 'calibrate' TSS to visual clarity and turbidity in particular rivers; 2. To measure organic content and organic nutrient content of suspended particuate matter Rob Davies-Colley, Deborah Ballantine onGoing pointOfContact NIWA Rob.Davies-Colley@niwa.co.nz Rob Davies-Colley Principal Scientist vector inlandWaters New Zealand 166.045609 179.053422 -46.980252 -34.379713 2011-01-01T00:00:00 total suspended sediment (TSS); volatile suspended sediment (VSS); particulate organic matter (POM); particulate organic carbon (POC); particulate organic nitrogen (PON) CESD112 CESD122 CESD132 CESD142 CESD152 theme NIWA Project Codes 2012-01-01 publication NIWA_ProjectCode NO constraints NO constraints unclassified eng https://dc.niwa.co.nz/niwa_dc/srv/metadata/82eb7645-f010-855e-12c8-ce5416e15360 WWW:LINK-1.0-http--metadata-URL Point of truth URL of this metadata record O:\CESD112\Working\Sed addon NRWQN (EIEM1204 & EIEM1302)\Data tables\2011 collation NRWQN and SS add-on dataset Add-on of suspended particulate matter analysis to NRWQN unclassified