Dataset

Chlorophyll sampling in the coastal waters of south eastern Tasmania

University of Tasmania, Australia
Swadling, Kerrie, 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=https://metadata.imas.utas.edu.au:443/geonetwork/srv/en/metadata.show?uuid=948e4895-5be1-4a84-af35-016ced9b2245&rft.title=Chlorophyll sampling in the coastal waters of south eastern Tasmania&rft.identifier=https://metadata.imas.utas.edu.au:443/geonetwork/srv/en/metadata.show?uuid=948e4895-5be1-4a84-af35-016ced9b2245&rft.publisher=Institute for Marine and Antarctic Studies, University of Tasmania&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).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.date=2018&rft.relation=https://data.imas.utas.edu.au/attachments/3b002636-f1b2-441d-a135-f043df3c8c15/2014-031-DLD.pdf&rft.coverage=northlimit=-43.0123609615; southlimit=-43.3548230459; westlimit=147.362548828; eastLimit=147.71685791&rft_rights=Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/&rft_rights=Please contact Kerrie Swadling (Principal Investigator) if you wish to use the data.&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_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.type=dataset&rft.language=English Access the data

Licence & Rights:

Open Licence view details
CC-BY

Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/

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

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.

Access:

Open

Full 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

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.

Created: 2018-06-25

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

This dataset is part of a larger collection

Click to explore relationships graph

147.71685791,-43.0123609615 147.71685791,-43.3548230459 147.362548828,-43.3548230459 147.362548828,-43.0123609615 147.71685791,-43.0123609615

147.539703369,-43.1835920037

Other Information
DATA ACCESS - Chlorophyll sampling [direct download]

uri : https://geoserver.imas.utas.edu.au/geoserver/wfs

URI : https://geoserver.imas.utas.edu.au/geoserver/wfs?version=1.0.0&request=GetFeature&typeName=ECP_GEOSERVER_CHLOROPHYLL&outputFormat=csv

MAP - Chlorophyll sampling locations (imas:ECP_GEOSERVER_CHLOROPHYLL)

uri : https://geoserver.imas.utas.edu.au/geoserver/wms

This OGC WFS service returns the data in subsettable CSV format. (imas:ECP_GEOSERVER_CHLOROPHYLL)

uri : https://geoserver.imas.utas.edu.au/geoserver/wfs

View and download this data through the interactive IMAS Data Portal.

uri : https://data.imas.utas.edu.au/portal/search

URI : https://data.imas.utas.edu.au/portal/search?uuid=948e4895-5be1-4a84-af35-016ced9b2245