Data

Chlorophyll sampling in the coastal waters of south eastern Tasmania

Australian Ocean Data Network
Swadling, Kerrie, Dr ; Eriksen, Ruth, Dr ; Beard, Jason, Mr ; Crawford, Christine, Dr
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=http://catalogue-aodn.prod.aodn.org.au/geonetwork/srv/eng/search?uuid=948e4895-5be1-4a84-af35-016ced9b2245&rft.title=Chlorophyll sampling in the coastal waters of south eastern Tasmania&rft.identifier=http://catalogue-aodn.prod.aodn.org.au/geonetwork/srv/eng/search?uuid=948e4895-5be1-4a84-af35-016ced9b2245&rft.description=Chlorophyll a concentration is widely used as a proxy to describe trends in phytoplankton biomass over spatial and temporal scales. The concentration of chlorophyll a in Storm Bay showed surprisingly little variation across the seasons. There was a gradient in concentration from site 1 to site 3, where chlorophyll a decreased slightly. It was highest and most variable at the inshore sites 1 and 9, and lowest at site 3, furthest out in the bay. There was no clear annually recurrent seasonal bloom, although data suggests higher values in spring and autumn (see later time series).Maintenance and Update Frequency: notPlannedStatement: An integrated water column sample (12 m) using a weighted hose was collected for chlorophyll a analysis from February 2010. Prior to this, samples were collected from 1 m below the surface. Following the decision to include the integrated sampler, the sampling regime was revised in the following way. The contents of four sampling tube collections were mixed together and sub-sampled: 2 L samples for chlorophyll a were kept cold and dark until processing in the laboratory on return to shore. Water samples were also collected, using a 6 L or 8 L Niskin bottle, from 0.5 – 1 m below the surface, at 10 m depth, and within 5 m of the seabed. At site 3 an intermediate sample from 50 m was also collected. Chlorophyll a concentrations were determined after extraction of photosynthetic pigments using acetone 90:10 water (vol/vol), sonification and centrifuging to remove filter paper. Absorbances were measured using a Varian CBE cintra 10E spectrometer, and standard equations were applied to determine chlorophyll concentrations.&rft.creator=Swadling, Kerrie, Dr &rft.creator=Eriksen, Ruth, Dr &rft.creator=Beard, Jason, Mr &rft.creator=Crawford, Christine, Dr &rft.date=2018&rft.coverage=westlimit=147.362548828; southlimit=-43.3548230459; eastlimit=147.71685791; northlimit=-43.0123609615&rft.coverage=westlimit=147.362548828; southlimit=-43.3548230459; eastlimit=147.71685791; northlimit=-43.0123609615&rft.coverage=uplimit=90; downlimit=0&rft.coverage=uplimit=90; downlimit=0&rft_rights=The data described in this record are the intellectual property of the University of Tasmania through the Institute for Marine and Antarctic Studies. Please contact Kerrie Swadling (Principal Investigator) if you wish to use the data.&rft_rights= http://creativecommons.org/licenses/by/4.0/&rft_rights=http://i.creativecommons.org/l/by/4.0/88x31.png&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Graphic&rft_rights=Creative Commons Attribution 4.0 International License&rft_rights=http://creativecommons.org/international/&rft_rights=WWW:LINK-1.0-http--related&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Text&rft_rights=Swadling, K.M., Eriksen, R.S., Beard, J.M. and Crawford, C.M. (2018) Phytoplankton sampling in the coastal waters of south eastern Tasmania. Institute for Marine and Antarctic Studies, University of Tasmania. Data accessed at http://metadata.imas.utas.edu.au/geonetwork/srv/en/metadata.show?uuid=948e4895-5be1-4a84-af35-016ced9b2245 on (access date).&rft_rights=Please contact Kerrie Swadling (Principal Investigator) if you wish to use the data.&rft_rights=Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0&rft_subject=biota&rft_subject=AQUACULTURE&rft_subject=EARTH SCIENCE&rft_subject=AGRICULTURE&rft_subject=AGRICULTURAL AQUATIC SCIENCES&rft_subject=WATER QUALITY/WATER CHEMISTRY&rft_subject=TERRESTRIAL HYDROSPHERE&rft_subject=OCEAN CURRENTS&rft_subject=OCEANS&rft_subject=OCEAN CIRCULATION&rft_subject=DINOFLAGELLATES&rft_subject=BIOLOGICAL CLASSIFICATION&rft_subject=PROTISTS&rft_subject=FLAGELLATES&rft_subject=CHLOROPHYLL&rft_subject=OCEAN CHEMISTRY&rft_subject=PIGMENTS&rft_subject=Storm Bay&rft_subject=Marine and Estuarine Ecology (incl. Marine Ichthyology)&rft_subject=BIOLOGICAL SCIENCES&rft_subject=ECOLOGY&rft_subject=Biological Oceanography&rft_subject=EARTH SCIENCES&rft_subject=OCEANOGRAPHY&rft_subject=Temperate Reef&rft_subject=research vessel&rft_subject=Downwelling vector irradiance as photons (PAR wavelengths) in the water body&rft_subject=Sea-floor depth below surface of the water body&rft_subject=Secchi depth&rft_subject=Concentration of chlorophyll-a per unit volume of the water body&rft_subject=Concentration of chlorophyll-b per unit volume of the water body&rft_subject=Concentration of total chlorophyll-c per unit volume of the water body&rft_subject=Concentration of phaeophytin per unit volume of the water body&rft_subject=GC_CHLOROPHYLL_A_STDDEV&rft_subject=PT_CHLOROPHYLL_A_STDDEV&rft_subject=PP_CHLOROPHYLL_A_STDDEV&rft_subject=PT_CHLOROPHYLL_B_STDDEV&rft_subject=PT_CHLOROPHYLL_C_STDDEV&rft_subject=PHAEOPHYTIN_STDDEV&rft_subject=LI-COR LI-192 PAR sensor&rft_subject=spectrophotometers&rft.type=dataset&rft.language=English Access the data
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The data described in this record are the intellectual property of the University of Tasmania through the Institute for Marine and Antarctic Studies.

Please contact Kerrie Swadling (Principal Investigator) if you wish to use the data.

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License Text

Swadling, K.M., Eriksen, R.S., Beard, J.M. and Crawford, C.M. (2018) Phytoplankton sampling in the coastal waters of south eastern Tasmania. Institute for Marine and Antarctic Studies, University of Tasmania. Data accessed at http://metadata.imas.utas.edu.au/geonetwork/srv/en/metadata.show?uuid=948e4895-5be1-4a84-af35-016ced9b2245 on (access date).

Please contact Kerrie Swadling (Principal Investigator) if you wish to use the data.

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Brief description

Chlorophyll a concentration is widely used as a proxy to describe trends in phytoplankton biomass over spatial and temporal scales. The concentration of chlorophyll a in Storm Bay showed surprisingly little variation across the seasons. There was a gradient in concentration from site 1 to site 3, where chlorophyll a decreased slightly. It was highest and most variable at the inshore sites 1 and 9, and lowest at site 3, furthest out in the bay. There was no clear annually recurrent seasonal bloom, although data suggests higher values in spring and autumn (see later time series).

Lineage

Maintenance and Update Frequency: notPlanned
Statement: An integrated water column sample (12 m) using a weighted hose was collected for chlorophyll a analysis from February 2010. Prior to this, samples were collected from 1 m below the surface. Following the decision to include the integrated sampler, the sampling regime was revised in the following way. The contents of four sampling tube collections were mixed together and sub-sampled: 2 L samples for chlorophyll a were kept cold and dark until processing in the laboratory on return to shore. Water samples were also collected, using a 6 L or 8 L Niskin bottle, from 0.5 – 1 m below the surface, at 10 m depth, and within 5 m of the seabed. At site 3 an intermediate sample from 50 m was also collected. Chlorophyll a concentrations were determined after extraction of photosynthetic pigments using acetone 90:10 water (vol/vol), sonification and centrifuging to remove filter paper. Absorbances were measured using a Varian CBE cintra 10E spectrometer, and standard equations were applied to determine chlorophyll concentrations.

Notes

Credit
Fisheries Research and Development Corporation (FRDC)

Created: 2018-06-25

Data time period: 2009-11-01 to 2015-04-30

This dataset is part of a larger collection

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147.71686,-43.01236 147.71686,-43.35482 147.36255,-43.35482 147.36255,-43.01236 147.71686,-43.01236

147.539703369,-43.1835920037

text: westlimit=147.362548828; southlimit=-43.3548230459; eastlimit=147.71685791; northlimit=-43.0123609615

text: uplimit=90; downlimit=0

Subjects
AGRICULTURAL AQUATIC SCIENCES | AGRICULTURE | AQUACULTURE | BIOLOGICAL CLASSIFICATION | Biological Sciences | Biological Oceanography | CHLOROPHYLL | Concentration of chlorophyll-a per unit volume of the water body | Concentration of chlorophyll-b per unit volume of the water body | Concentration of phaeophytin per unit volume of the water body | Concentration of total chlorophyll-c per unit volume of the water body | DINOFLAGELLATES | Downwelling vector irradiance as photons (PAR wavelengths) in the water body | EARTH SCIENCE | Earth Sciences | Ecology | FLAGELLATES | GC_CHLOROPHYLL_A_STDDEV | LI-COR LI-192 PAR sensor | Marine and Estuarine Ecology (Incl. Marine Ichthyology) | OCEAN CHEMISTRY | OCEAN CIRCULATION | OCEAN CURRENTS | Oceanography | OCEANS | PHAEOPHYTIN_STDDEV | PIGMENTS | PP_CHLOROPHYLL_A_STDDEV | PROTISTS | PT_CHLOROPHYLL_A_STDDEV | PT_CHLOROPHYLL_B_STDDEV | PT_CHLOROPHYLL_C_STDDEV | Sea-floor depth below surface of the water body | Secchi depth | Storm Bay | TERRESTRIAL HYDROSPHERE | Temperate Reef | WATER QUALITY/WATER CHEMISTRY | biota | research vessel | spectrophotometers |

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Other Information
(PUBLICATION - Salmon Sub-program: Marine currents, nutrients and plankton in the coastal waters of south eastern Tasmania and responses to changing weather patterns.)

uri : https://data.imas.utas.edu.au/attachments/3b002636-f1b2-441d-a135-f043df3c8c15/2014-031-DLD.pdf

global : 1ac5a95c-af8c-4eac-a81f-dec562ab44ab

Identifiers
  • global : 948e4895-5be1-4a84-af35-016ced9b2245
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