Data

Chlorophyll a and Phaeophytin a data for surface seabed sediments in Jervis Bay, NSW (June and August 2008 and February 2009)

Australian Ocean Data Network
CSIRO O&A, Information & Data Centre (Point of contact) Geoscience Australia Marine Data Manager, (Point of contact)
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://marlin.csiro.au/geonetwork/srv/eng/catalog.search#/metadata/bc1b3741-e768-5039-e044-00144f7bc0f4&rft.title=Chlorophyll a and Phaeophytin a data for surface seabed sediments in Jervis Bay, NSW (June and August 2008 and February 2009)&rft.identifier=Marlin Record Number: 8915&rft.publisher=Australian Ocean Data Network&rft.description=Geoscience Australia carried out marine surveys in Jervis Bay (NSW) in 2007, 2008 and 2009 (GA303, GA305, GA309, GA312) to map seabed bathymetry and characterise benthic environments through colocated sampling of surface sediments (for textural and biogeochemical analysis) and infauna, observation of benthic habitats using underwater towed video and stills photography, and measurement of ocean tides and wavegenerated currents. Data and samples were acquired using the Defence Science and Technology Organisation (DSTO) Research Vessel Kimbla. Bathymetric mapping, sampling and tide/wave measurement were concentrated in a 3x5 km survey grid (named Darling Road Grid, DRG) within the southern part of the Jervis Bay, incorporating the bay entrance. Additional sampling and stills photography plus bathymetric mapping along transits was undertaken at representative habitat types outside the DRG. This 126 sample dataset comprises chlorophyll a and pheophytin a measurements on surface seabed sediments (~0 to 2 cm) from Jervis Bay. This dataset is a contribution to the CERF Marine Biodiversity Hub.Progress Code: completedMaintenance and Update Frequency: notPlannedStatement: Bottom sediments were collected using a small Shipek type grab sampler.This device can collect an intact sample of sediment up to 5 cm by 12 cm in area, and 5 cm thick. Upon triggering, the grab immediately covers the sample, preventing washout of fine sediment during retrieval to the surface. The surface 0.5 cm of sediment within the grab was sampled using a cutoff syringe.The subsample was wrapped in Al foil and immediately frozen.Chl_a concentrations in sediment extracts (90% acetone) were calculated from spectrophotometric readings at wavelengths of 664 nm and 750 nm before and after the addition of 0.1 mol/L HCl using the equation derived by Lorenzen (1967). Pheophytin a concentrations are determined as part of the process. Data are presented in ug/g, both as wet and dry weights.&rft.creator=Anonymous&rft.date=2008&rft.coverage=westlimit=150.67724999999999; southlimit=-35.130000000000003; eastlimit=150.78; northlimit=-35&rft.coverage=westlimit=150.67724999999999; southlimit=-35.130000000000003; eastlimit=150.78; northlimit=-35&rft_rights=This material is released under the Creative Commons Attribution 3.0 Australia Licence.&rft_subject=oceans&rft_subject=Commonwealth Environment Research Facilities&rft.type=dataset&rft.language=English Access the data
Cite Saved to MyRDA Save to MyRDA

Licence & Rights:

view details

This material is released under the Creative Commons Attribution 3.0 Australia Licence.

Access:

Other

Brief description

Geoscience Australia carried out marine surveys in Jervis Bay (NSW) in 2007, 2008 and 2009 (GA303, GA305, GA309, GA312) to map seabed bathymetry and characterise benthic environments through colocated sampling of surface sediments (for textural and biogeochemical analysis) and infauna, observation of benthic habitats using underwater towed video and stills photography, and measurement of ocean tides and wavegenerated currents. Data and samples were acquired using the Defence Science and Technology Organisation (DSTO) Research Vessel Kimbla. Bathymetric mapping, sampling and tide/wave measurement were concentrated in a 3x5 km survey grid (named Darling Road Grid, DRG) within the southern part of the Jervis Bay, incorporating the bay entrance. Additional sampling and stills photography plus bathymetric mapping along transits was undertaken at representative habitat types outside the DRG. This 126 sample dataset comprises chlorophyll a and pheophytin a measurements on surface seabed sediments (~0 to 2 cm) from Jervis Bay. This dataset is a contribution to the CERF Marine Biodiversity Hub.

Lineage

Progress Code: completed
Maintenance and Update Frequency: notPlanned
Statement: Bottom sediments were collected using a small Shipek type grab sampler.This device can collect an intact sample of sediment up to 5 cm by 12 cm in area, and 5 cm thick. Upon triggering, the grab immediately covers the sample, preventing washout of fine sediment during retrieval to the surface. The surface 0.5 cm of sediment within the grab was sampled using a cutoff syringe.The subsample was wrapped in Al foil and immediately frozen.Chl_a concentrations in sediment extracts (90% acetone) were calculated from spectrophotometric readings at wavelengths of 664 nm and 750 nm before and after the addition of 0.1 mol/L HCl using the equation derived by Lorenzen (1967). Pheophytin a concentrations are determined as part of the process. Data are presented in ug/g, both as wet and dry weights.

Notes

Credit
Geoscience Australia undertook a series of field campaigns in Jervis Bay (Dec 2007 to present) as part of the Surrogates Program in the Commonwealth (Australia) Environmental Research Facilities (CERF) Marine Biodiversity Hub. Thanks are owning to a range of people for there generous contributions to this study. Scott Corson (the master of the M.V. Kimbla)
Credit
Matthew Carey
Credit
Peter Harris
Credit
Mike Hughes
Credit
Jodie Smith and Anna Potter provided field support. Janice Trafford undertook the chlorophyll analyses. Billie Poignand and Kylia Wall calculated wet and dry weights on replicate subsamples. This dataset is also available online via the OzCoasts (www.ozcoasts.org.au) and MARS (http://www.ga.gov.au/oracle/mars/) databases.

This dataset is part of a larger collection

Click to explore relationships graph
Help

Related Organisations

Related People

Related Services

150.78,-35 150.78,-35.13 150.67725,-35.13 150.67725,-35 150.78,-35

150.728625,-35.065

text: westlimit=150.67724999999999; southlimit=-35.130000000000003; eastlimit=150.78; northlimit=-35

Subjects
Commonwealth Environment Research Facilities | oceans |

User Contributed Tags    

Login to tag this record with meaningful keywords to make it easier to discover

Identifiers
  • Local : Marlin Record Number: 8915
  • global : bc1b3741-e768-5039-e044-00144f7bc0f4
Similar data you may be interested in: