Dataset
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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://data.csiro.au/dap/landingpage?pid=csiro:17632&rft.title=WAMSI 2 - Dredging Node - Project 5.3 - Natural Dynamics [dataset]&rft.identifier=https://data.csiro.au/dap/landingpage?pid=csiro:17632&rft.publisher=Edith Cowan University&rft.description=The Theme 5.3 study was undertaken to improve our understanding of the spatial and temporal patterns in seagrass composition, abundance and reproductive phenology in the Pilbara region. Key environmental parameters, especially light, that influence seagrass survival and can be altered by dredging were also characterised. From August 2013 to March 2015 (18 months), surveys of seagrass abundance were undertaken in the Exmouth Gulf region. The locations surveyed (South Muiron Island, Bundegi and Exmouth Gulf) encompassed a range in water clarity from clear to turbid. Less frequent surveys were undertaken at other locations in the Pilbara: Thevenard Island, Rosemary Island and Balla. Measurements of seagrass abundance were also obtained from monitoring conducted as part of the dredging and dredge-spoil management plan for Chevron Australia’s Wheatstone Liquefied Natural Gas (LNG) Project. During each survey measurements were made in the field, photographs were taken or samples were collected in order to measure the following variables: 1. percentage cover of seagrass and other benthos; 2. above- and below-ground biomass, shoot density, leaf length, leaf width and number of flowers; 3. density of seagrass seeds; 4. sediment grain size; 5. stable isotope ratios (13C and 15N) of seagrass leaf tissue; and 6. water quality (light, conductivity, temperature, salinity, nutrients, suspended particulate matter and chlorophyll). At each site the following activities were conducted: 1. Photographic transects 2. Cores 3. Stable isotope analysis; 4. Conductivity, Temperature and Depth recorder with a Licor 192SA PAR sensor 5. Water samples Geographic bounding : North bound: -21.60000, West bound: 114.10000, East bound: 114.40000, South bound: -22.30000&rft.creator=James McLaughlin&rft.creator=Kathryn McMahon&rft.creator=Nick Mortimer&rft.creator=Roisin McCallum&rft.creator=Hector Lozano-Montes&rft.creator=Douglas Bearham&rft.creator=Mick Haywood&rft.creator=Paul Lavery&rft.creator=Mathew Vanderklift&rft.date=2017&rft.relation=http://www.wamsi.org.au/sites/wamsi.org.au/files/files/Seagrass%20Natural%20Dynamics_WAMSI%20DSN%20Report%205_3_Vanderklift%20et%20al%202017_Final.pdf&rft_rights= http://creativecommons.org/licenses/by/4.0/&rft_subject=Earth Science&rft_subject=Oceans&rft_subject=Ocean Chemistry&rft_subject=Chlorophyll&rft_subject=Nutrients&rft_subject=Organic Matter&rft_subject=Suspended Solids&rft_subject=Stable Isotopes&rft_subject=Ocean Temperature&rft_subject=Water Temperature&rft_subject=Western Australian Marine Science Institute&rft_subject=Wamsi&rft_subject=Primary Producer Response to Dredging Related Pressures&rft_subject=Ct Ds &rft_subject=Conductivity-Temperature-Depth Profilers&rft_subject=Cameras - Still - Underwater&rft_subject=Water Column Samplers&rft_subject=Western Australia&rft_subject=Australia&rft_subject=Marine Features&rft_subject=Exmouth Gulf&rft_subject=Oceanography and Atmospheric Sciences and Meteorology&rft_subject=Oceanography&rft_subject=Earth Sciences&rft.type=dataset&rft.language=English Access the data

Contact Information

This dataset is currently embargoed. To request for access, kindly contact Mat Vanderklift (CSIRO Oceans & Atmosphere) (Mat.Vanderklift@csiro.au)

Full description

The Theme 5.3 study was undertaken to improve our understanding of the spatial and temporal patterns in seagrass composition, abundance and reproductive phenology in the Pilbara region. Key environmental parameters, especially light, that influence seagrass survival and can be altered by dredging were also characterised.

From August 2013 to March 2015 (18 months), surveys of seagrass abundance were undertaken in the Exmouth Gulf region. The locations surveyed (South Muiron Island, Bundegi and Exmouth Gulf) encompassed a range in water clarity from clear to turbid. Less frequent surveys were undertaken at other locations in the Pilbara: Thevenard Island, Rosemary Island and Balla. Measurements of seagrass abundance were also obtained from monitoring conducted as part of the dredging and dredge-spoil management plan for Chevron Australia’s Wheatstone Liquefied Natural Gas (LNG) Project.

During each survey measurements were made in the field, photographs were taken or samples were collected in order to measure the following variables:

1. percentage cover of seagrass and other benthos;

2. above- and below-ground biomass, shoot density, leaf length, leaf width and number of flowers;

3. density of seagrass seeds;

4. sediment grain size;

5. stable isotope ratios (13C and 15N) of seagrass leaf tissue; and

6. water quality (light, conductivity, temperature, salinity, nutrients, suspended particulate matter and chlorophyll).

At each site the following activities were conducted:

1. Photographic transects

2. Cores

3. Stable isotope analysis;

4. Conductivity, Temperature and Depth recorder with a Licor 192SA PAR sensor

5. Water samples

Geographic bounding :

North bound: -21.60000, West bound: 114.10000, East bound: 114.40000, South bound: -22.30000

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