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WAMSI Node 1.1.3 - Marmion Benthic Survey 2007

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About this Collection

WAMSI Node 1.1.3 - Marmion Benthic Survey 2007


In May-June 2007, an "autumn bloom cruise" was conducted on the National Marine Facility, Southern Surveyor, led by Peter Thompson. The voyage was conducted in three legs, with a the first conducted from May 10th to May 15th focused on benthic habitats. Benthic based operations were performed over two transects near Perth at 31.71ºS ... more


Biological Oceanography


http://doi.org/10.4225/08/51145B02F20A8


CSIRO Enquiries
CSIROEnquiries@csiro.au
1300 363 400

Biosphere Ecological Dynamics Community Structure Oceans Bathymetry/Seafloor Topography Seafloor Topography Australia > Western Australia Coast Indian Ocean


The dredges were by a large heavy epibenthic sled, 1.2m wide with net catch 15mm stretched mesh. Thirteen dredges comprised 6 over reef or rock sediment (from 30-75m depth) and 7 over soft sediment (from 40-150m depth). Animal and plant samples were photographed, identified, catalogued, counted and weighed. Thirteen videos were captured- 1 at each station of 30, 40 and 150m depth and 2 continuous tows from 50-100m depth. Extra videos were also performed between 35-50m depth to target a range of habitat heterogeneity identified from the swath imagery. The series of towed videos ranged from a distance of 470m to 5.9km, with a total distance of 32.5km of benthic footage. Video was manually described into 15 categories based on sea-bed type and associated plants and animals and their densities. Data Details of operation deployments and results of benthic dredges reside in an Oracle database; extracts have been saved as Excel spreadsheets with further analysis. Videos are stored on original DVCAM tapes and as .wmv files; analysis is in an Excel spreadsheet. Swath data is a series of .xyz, .all and .txt files.


Tennille Irvine


Creative Commons Attribution 3.0 Unported Licence


CSIRO (Australia), Western Australian Marine Science Institution (WAMSI) (Australia)


Keesing, John; Irvine, Tennille (2012): WAMSI Node 1.1.3 - Marmion Benthic Survey 2007. v1. CSIRO. Data Collection. http://doi.org/10.4225/08/51145B02F20A8


All Rights Reserved (including copyright) CSIRO Australia 2012.


The metadata and files are available to the public.

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Location Details

31°42′36″ S


31°45′36″ S


115°37′48″ E


115°9′0″ E


WGS84


More about this Collection

Hiski Kippo, CSIRO Division of Marine and Atmospheric Research - Floreat


Scitentific Programmer - Data Manager


-150 m


-30 m






eng


utf8


Oceans


About this Project

CLSD WAMSI 1.1: SW Aus Shelf Biogeochem


WAMSI Node 1 Project 1: Southwest Australian Coastal Biogeochemistry To characterise the South West Australian marine coastal and shelf ecosystem.


John Keesing


Oceanic survey- dredge


Observed Data - field Acoustic swath mapping, benthic sled dredges, sediment grabs, benthic video and CTD casts.


Observation


John Keesing


Tennille Irvine


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