Brief description
This data set contains tables that document the changing taxonomic resolution of the NRS plankton analysis. Improvements are made in the resolution to which the analysts can routinely identify plankton species through training and QC events.There is a taxon change log table for both Phytoplankton and Zooplankton, both containing the same information. If a taxa is not present in the change log tables then the taxonomic resolution to which it is counted has not changed over the course of the project. If a taxa appears in the table then it has not been counted under that taxa over the course of the project. The dates will allow users to see when the taxonomic resolution was changed, what it changed from and what training led to the change. This information is particularly useful when looking at analysis such as times series or changes of distribution over time. Taxa can appear to have first been counted part way through the time series, when in reality they were being ascribed to a lower taxonomic resolution.
Lineage
Progress Code: onGoingThe phytoplankton samples are settled in a 1000 ml measuring cylinder for 24 hours. The top 900ml is siphoned off once settled and the remainder is transferred into a 100ml measuring cylinder and left to settle for 24 hours. Once settled the top 90 ml is siphoned off from these samples and the remainder is transferred into a sample jar. This is gently agitated and a 1ml sample is taken and transferred into a Segdwick rafter. The whole sample is scanned at 100x magnification to count large cells. The sample is then counted at 200x magnification to count up to 200 cells of one taxa or up to 400 squares of the Sedgwick rafter. Finally, the sample is counted at 640x magnification for small flagellates, up to 200 cells of one taxa or 20 squares on the Sedgwick rafter. These counts are then converted to cells / l and ml / l and the data is available through AODN portal: https://portal.aodn.org.au
Notes
CreditThese data are from the National Mooring Network, part of the Integrated Marine Observing System (IMOS) - IMOS is a national collaborative research infrastructure, supported by the Australian Government. Each NRS collects its own zooplankton samples and sends them to the CSIRO O&A Dutton Park laboratories for analysis.
A. Richardson
F. Coman
C. Davies
A. Slotwinski
M. Tonks
J. Uribe Palamino
F. McEnnulty
R. Eriksen
Data time period: 2008-09-01
text: westlimit=115; southlimit=-44; eastlimit=154; northlimit=-10; projection=GDA94
text: uplimit=-25; downlimit=-100
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AODN portal (Data Link)
uri :
https://portal.aodn.org.au
IMOS National Reference Station (NRS) - Phytoplankton Abundance and Biovolume (Data Link)
IMOS National Reference Station (NRS) - Zooplankton Abundance (Data Link)
National Mooring Network – Home Page (Documentation Link)
- global : fc8a5e2a-c57c-3236-e043-08114f8ceaf4
- Local : Marlin Record Number: 14409
- Local : Anzlic Identifier: ANZCW0306014409