meth_2.2int IMOS sample metadata produced from integrated water column measurements

Contributor(s): IMOS

Citation: Davies, C. and Sommerville, E. (Eds.) (2017), National Reference Stations Biogeochemical Operations Manual Version 3.2.1. Integrated Marine Observing System.

DOI: 10.26198/5c4a56f2a8ae3 (http://dx.doi.org/10.26198/5c4a56f2a8ae3

AM Project ID: AM_IMOS, AM0001

The analytical methods used for Integrated Marine Observing System (IMOS) National Reference Stations (NRS) water samples are detailed in the IMOS Biogeochemical Operations manual:

https://s3-ap-southeast-2.amazonaws.com/content.aodn.org.au/Documents/IMOS/Facilities/national_mooring/IMOS_NRS_BGCManual_LATEST.pdf

This manual is maintained by the IMOS NRS BGC working group. Previous versions can be found at the DOI link in the citation.

Some sample measurements are produced from integrated water column samples.

  1. Zooplankton Abundance and Biomass – samples for zooplankton analysis are collected using a drop net which collects biomass from the surface to the bottom depth in a single sample which is preserved for analysis.
  2. TSS, Pigments, Flow Cytometry – Prior to July 2017, TSS, pigments and flow cytometry were analysed from a pooled, multi-depth sample. From mid-2017, TSS is measured from surface samples only, pigments from surface and 20 m depths, and flow cytometry from 3-6 discrete depths. Details of these changes including links to comparative reports can be found in the IMOS Biogeochemical Operations manual.

Where sample BGC metadata has been sourced from either an integrated water column or pooled, multi-depth sample, the depth in “SampleID” is represented by “wc” (water column). Therefore, for integrated water column measurements:

  1. IMOS – Combined biogeochemical (BGC) parameters. Samples are matched using the AM field “nrs_sample_code” and the Combined biogeochemical (BGC) parameters field “SampleID” to match biogeochemical parameters with samples that have DNA sequencing data available. “SampleID” consists of the NRS ID, date of sampling, depth designation of “wc” and, for Darwin NRS only, time of sampling. The metadata record for the Combined biogeochemical (BGC) parameters dataset is here: https://catalogue-imos.aodn.org.au/geonetwork/srv/eng/catalog.search#/metadata/b442c3e8-3d30-48ad-b144-680afd848167 

Data Collections Credit: “Australia’s Integrated Marine Observing System (IMOS) is enabled by the National Collaborative Research Infrastructure Strategy (NCRIS). It is operated by a consortium of institutions as an unincorporated joint venture, with the University of Tasmania as Lead Agent.”,”CSIRO Oceans and Atmosphere”,”South Australian Research and Development Institute (SARDI)”,”Sydney Institute of Marine Science (SIMS)”,”Australian Institute of Marine Science (AIMS)”,”Darwin Port”,”The University of New South Wales (UNSW)”,”Office of Environment and Heritage (OEH), New South Wales Government”,”Sydney Water”,”Oceanographic Field Services Pty Ltd”,”University of Technology, Sydney (UTS)”,”SA Water”,”Environment Protection Authority (EPA), South Australian Government”,”Deakin University”,”Department of Jobs, Tourism, Science and Innovation (DJTSI), Western Australian Government”.