Data
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://marlin.csiro.au/geonetwork/srv/eng/catalog.search#/metadata/fc8a5e2a-c57c-3236-e043-08114f8ceaf4&rft.title=IMOS National Reference Station (NRS) - Taxonomic Change Logs&rft.identifier=Anzlic Identifier: ANZCW0306014409&rft.publisher=Integrated Marine Observing System&rft.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.Data sampling is being conducted as part of a larger IMOS monitoring program. The zooplankton samples are analysed at the Plankton Ecology Lab at CSIRO O&A, Dutton Park, Queensland. The samples are concentrated down to 100 ml in a measuring cylinder. A subsample (1 ml, 2.5 ml or 5 ml) is taken from the 100 ml concentrate using a stempel pipette. The sub sample is analysed to the lowest taxa possible. For each sample 100 adult copepods and 500 total zooplanktons must be counted. If these conditions are not met by the first sub sample analysis, a second sub sample is analysed. This continues until the two conditions are met. These counts are then converted to taxa / m3 and the data is available through AODN portal: https://portal.aodn.org.au The 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&rft.creator=Anonymous&rft.date=2014&rft.coverage=northlimit=-10; southlimit=-44; westlimit=115; eastLimit=154&rft.coverage=northlimit=-10; southlimit=-44; westlimit=115; eastLimit=154&rft_subject=biota&rft_subject=oceans&rft_subject=BACTERIA/ARCHAEA&rft_subject=EARTH SCIENCE&rft_subject=BIOLOGICAL CLASSIFICATION&rft_subject=MICROALGAE&rft_subject=PLANTS&rft_subject=PLANKTON&rft_subject=PROTISTS&rft_subject=PHYTOPLANKTON&rft_subject=PLANKTON&rft_subject=COASTAL HABITAT&rft_subject=BIOSPHERE&rft_subject=AQUATIC ECOSYSTEMS&rft_subject=PELAGIC HABITAT&rft_subject=ZOOPLANKTON&rft_subject=ALKALINITY&rft_subject=OCEANS&rft_subject=OCEAN CHEMISTRY&rft_subject=INORGANIC CARBON&rft_subject=FLUORESCENCE&rft_subject=OCEAN OPTICS&rft_subject=SECCHI DEPTH&rft_subject=TURBIDITY&rft_subject=WATER TEMPERATURE&rft_subject=OCEAN TEMPERATURE&rft_subject=SALINITY&rft_subject=SALINITY/DENSITY&rft_subject=Boats and Small Vessels&rft_subject=Optical Microscopes&rft_subject=Plankton Nets/Drop Nets&rft_subject=Zooplankton Nets&rft_subject=Countries | Australia&rft_subject=Global / Oceans | Indian Ocean&rft_subject=Global / Oceans | Pacific Ocean&rft_subject=IMOS Biogeochemical Sampling&rft_subject=Noctiluca scintillans&rft.type=dataset&rft.language=English Access the data

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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

Data sampling is being conducted as part of a larger IMOS monitoring program. The zooplankton samples are analysed at the Plankton Ecology Lab at CSIRO O&A, Dutton Park, Queensland. The samples are concentrated down to 100 ml in a measuring cylinder. A subsample (1 ml, 2.5 ml or 5 ml) is taken from the 100 ml concentrate using a stempel pipette. The sub sample is analysed to the lowest taxa possible. For each sample 100 adult copepods and 500 total zooplanktons must be counted. If these conditions are not met by the first sub sample analysis, a second sub sample is analysed. This continues until the two conditions are met. These counts are then converted to taxa / m3 and the data is available through AODN portal: https://portal.aodn.org.au
The 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

Credit
These 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.
Credit
A. Richardson
Credit
F. Coman
Credit
C. Davies
Credit
A. Slotwinski
Credit
M. Tonks
Credit
J. Uribe Palamino
Credit
F. McEnnulty
Credit
R. Eriksen

Data time period: 2008-09-01

This dataset is part of a larger collection

154,-10 154,-44 115,-44 115,-10 154,-10

134.5,-27

Other Information
AODN portal (Data Link)

uri : https://portal.aodn.org.au

National Mooring Network – Home Page (Documentation Link)

uri : https://imos.org.au/nationalmooringnetwork.html

Identifiers
  • global : fc8a5e2a-c57c-3236-e043-08114f8ceaf4
  • Local : Marlin Record Number: 14409
  • Local : Anzlic Identifier: ANZCW0306014409