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Four 10 cm and four 6 cm diameter sediment cores were collected at each of the study sites in the Gippsland area, Victoria. Cores were collected by hand and involved divers pushing the core into the s... moreediment to a depth of 10 cm depth and capping the core at both ends using rubber stoppers. At each site 4 cores of each size were collected for bacteria and infauna, replicated on 2 spatial scales, 1 m apart and 10 m apart.
Sediment cores have been processed and analysed for infaunal diversity and abundance (top 10 cm of caore), bacteria DNA (0-2 cm core depth and 8-10 cm core depth) and infauna DNA (top 10 cm of cores); XRD, TC/TOC/TN and particle size will be analysed for some cores. less
Assessment of MMV methodologies for subsea CCS: seabed and water column monitoring - Diver Deployed Sediment Cores - Published 07 Apr 2020
The Smith MacIntyre Grab is designed to collect ocean sediment with a sampling area of 0.1m sq. This grab is mounted on a stainless steel frame suspended from a pair of lowering cables (bridles) attac... morehed to the bucket arms. Springs activated by a trigger mechanism, released when the foot plates come into contact with the ocean floor, force the bucket jaws into the sediment in order to collect the sample. Safety features have been fitted to the grab to prevent the tripping mechanism from being triggered prematurely. Screens have also been fitted to the tops of the buckets, along with silicone flaps, to prevent sediment from being washed out during retrieval. CSIRO.
Sediment samples were collected during BLU201701. The samples were sent from Hobart, TAS to Kensington, WA for analyses on 26 February 2018. less
Assessment of MMV methodologies for subsea CCS: seabed and water column monitoring - sediment grab samples - Published 20 Jun 2018
The data encompasses a benthic survey of the East and South Alligator Rivers, Kakadu National Park. Each estuary was survey on two occasions (wet and dry), encompassing eight sites from the mouth to t... morehe road crossings.
1177.2 Estuarine Health Assessment - Experiment - Published 27 Mar 2015
eDNA metabarcoding was performed to assess the effects of copper on the establishment of the benthic eukaryote community within a series of environmentally relevant copper contaminated fresh... morewater mesocosms. The data is obtained from a recolonization experiment contained five treatments : control (C) and four sediment copper concentrations (very low (VL), low (L), high (H) and very high (VH)), each with four replicates. The data represents samples obtained on seven occasions subsequent to the experiment being established: 15, 31, 135, 161, 365, 407 and 497 days.
Details on the experimental design are available in:
Gardham, S., G. C. Hose, S. L. Simpson, C. Jarolimek, and A. A. Chariton. 2014. Long-term copper partitioning of metal-spiked sediments used in outdoor mesocosms. Environmental Science and Pollution Research 21:7130-7139.
1177.2 Estuarine Health Assessment - Experiment - Published 29 Sep 2014
Roche 454 FLX Titanium produced 18S rDNA amplicons derived from an experiment which examined the vertical migration of benthic biota through triclosan contaminated surficial sediments.
The primers u... moresed were 18S SSU_F04 (5’-GCTTGTCTCAAAGATTAAGCC-3’) and 18S SSU_R22 (5’-GCCTGCTGCCTTCCTTGGA-3’)
The study contained four treatments The treatments were: 1) Field Control with no sediment added; 2) Triclosan Control with reference sediment added from Long Island Sound (LIS); 3) Low Triclosan (30 mg triclosan/kg dry LIS sediment); and 4) High Triclosan (300 mg triclosan/kg dry LIS sediment ).
1177.2 Estuarine Health Assessment - Experiment - Published 11 Dec 2012