Product catalogue
Baseline biogeochemical data from Australia’s continental margin links seabed sediments to water column characteristics
Surficial marine sediments are an important source of nutrients for productivity and biodiversity yet the biogeochemistry of these sediments is poorly known in Australia. Seabed samples were collected at >350 locations in Australia’s western, northern and eastern continental margins during federal government surveys (2007-2014). Parameters analysed included measures of organic matter (OM) source (δ13C, δ15N and C:N-ratios), concentration (total organic carbon (%TOC) and surface area normalised TOC (OC:SA)) and bioavailability (chlorin indices, total reactive chlorins, total oxygen uptake, total sediment metabolism (TSM), sediment oxygen demand (SOD) and SOD and TSM normalised to TOC). The aim of this study is to summarise these biogeochemical ‘baseline’ data, and make contextualised inferences about processes that govern the observed concentrations. The OM was mainly from marine sources and OC:SA broadly reflected water column productivity (MODIS). Approximately 40% of sediments were organic-poor by global standards reflecting seawater oligotrophy; ~12% were organic-rich due to benthic production, high water column productivity and pockmark formation. OM freshness varied due to pigment degradation in water columns and dilution with refractory OM in reworked sediments. δ15N values confirmed the importance of N2 fixation to Timor Sea productivity, and point to recycling of fixed nitrogen within food chains in Western Australia.
<b>Citation:</b> Radke Lynda, Nicholas Tony, Thompson Peter A., Li Jin, Raes Eric, Carey Matthew, Atkinson Ian, Huang Zhi, Trafford Janice, Nichol Scott (2017) Baseline biogeochemical data from Australia’s continental margin links seabed sediments to water column characteristics. <i>Marine and Freshwater Research</i> <b>68</b>, 1593-1617.
Simple
Identification info
- Date (Creation)
- 2016-04-28
- Date (Publication)
- 2024-05-22T22:44:31
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/100112
- Cited responsible party
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Role Organisation / Individual Name Details Publisher CSIRO Publishing
External Contact Author Radke, L.
External Contact Author Nicholas, T.
External Contact Author Thompson, P.A.
External Contact Author Li, J.
External Contact Author Raes, E.
External Contact Author Carey, M.
Corporate Division Internal Contact Author Atkinson, I.
External Contact Author Huang, Z.
Place and Communities Internal Contact Author Trafford, J.
External Contact Author Nichol, S.
Place and Communities Internal Contact
- Name
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Marine and Freshwater Research
- Issue identification
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Volume 68, 2017
- Page
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1593-1617
- Purpose
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Manuscript to be submitted to Marine and Freshwater Research
- Status
- Completed
- Point of contact
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Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice Resource provider Place and Communities Division
External Contact Point of contact Huang, Z.
Place and Communities Internal Contact
- Spatial representation type
- Topic category
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- Oceans
Extent
Extent
))
- Maintenance and update frequency
- As needed
Resource format
- Title
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Product data repository: Various Formats
- Website
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Data Store directory containing the digital product files
Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes
- theme.ANZRC Fields of Research.rdf
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EARTH SCIENCES
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- Keywords
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diazotroph
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- Keywords
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particulate
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- Keywords
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organic carbon
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- Keywords
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totol nitrogen
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- Keywords
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Trichodesmium
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- Keywords
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marine, geochemistry, seabed, sediments
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- Keywords
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Published_External
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Resource constraints
- Title
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Creative Commons NonCommercial NoDerivs International Licence
- Alternate title
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CC-BY-NC-ND
- Edition
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4.0
- Access constraints
- License
- Use constraints
- License
- Other constraints
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Journal compilation CSIRO 2017
Resource constraints
- Classification
- Unclassified
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
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Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice facsimile
- OnLine resource
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Link to Journal
Link to Journal
- Distribution format
-
Resource lineage
- Statement
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Manuscript to be submitted to Marine and Freshwater Research
- Hierarchy level
- Dataset
Metadata constraints
- Classification
- Unclassified
Metadata
- Metadata identifier
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urn:uuid/521da90d-bf02-42d5-b632-34275cad2b3e
- Title
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GeoNetwork UUID
Type of resource
- Resource scope
- Document
- Name
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Journal Article
Alternative metadata reference
- Title
-
Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/100112
- Metadata linkage
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https://internal.ecat.ga.gov.au/geonetwork/srv/eng/search?uuid=521da90d-bf02-42d5-b632-34275cad2b3e
Point-of-truth metadata URL
- Date info (Creation)
- 2016-04-28T13:56:45
- Date info (Revision)
- 2017-04-07T06:09:27
Metadata standard
- Title
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AU/NZS ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-1:2014
Metadata standard
- Title
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ISO 19115-3 (Draft Schemas 2015)
- Edition date
- 2015-07-01T00:00:00
- Title
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Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
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Version 2.0, April 2015