2009 - 2011 Centre for Environment, Fisheries & Aquaculture Science (Cefas) North Sea and English Channel Organic Carbon and Nitrogen in Sediments
sediment carbon and nitrogen
Concentration of organic carbon and organic nitrogen from CHN analysis of sediment samples collected by box core from sites in the English Channel and North Sea during three surveys on RV Cefas Endeavour (Cruise Codes CEND 15/09, CEND 11/10 and CEND 11/11), with associated summary PSA data (%gravel, %sand, %mud). Mostly UK waters in coverage but some data from the Oyster Grounds (Dutch waters). Cores were sliced and sampled at a range of depth horizons and the data compiled to provide average values for the 0-5 cm and 5-10cm depth layers. These were used to summarise profiles and describe spatial variance within four Ecohydrodynamic Units (EHUs).
dataset
CEFASb0f49537-cbce-4391-b667-2214b1306187
http://www.cefas.co.uk/
eng
OGP
urn:ogc:def:crs:EPSG::4326
revision
2011-03-25
publication
2008-06-01
-6
5
56.75
49
revision
2010-05-18
2009-01-01
2011-12-31
publication
2021-12-10
notPlanned
Samples were screened at 2mm and the <2mm fraction was then freeze dried, homogenised, and treated with sulphurous acid to remove inorganic carbon (carbonates). Organic carbon was determined by flash combustion. Organic carbon levels in the sediment indicate the amount of organic matter supplied to the bed and how rapidly it is decomposed, i.e. it reflects the balance between input and respiration/burial. Organic carbon content of sediments is also related to eutrophication and biodiversity due to the relationship between the recycling of organic matter and the availability of oxygen. Records include data from Defra funded project ME5301 entitled 'Mapping the structure, function and sensitivity of seabed sediment habitats to support assessment of the sea-floor status and the broadscale monitoring and management of the benthic environment' which sampled locations in the North Sea and western English Channel. Further details of the project can be found at: `http://randd.defra.gov.uk/Default.aspx?Menu=Menu&Module=More&Location=None&Completed=2&ProjectID=16812`_ .. _`http://randd.defra.gov.uk/default.aspx?menu=menu&module=more&location=none&completed=2&projectid=16812`: http://randd.defra.gov.uk/Default.aspx?Menu=Menu&Module=More&Location=None&Completed=2&ProjectID=16812
Public data (Crown Copyright) - Open Government Licence Terms and Conditions apply
Public data (Crown Copyright) - Open Government Licence Terms and Conditions apply
Data Manager
Centre for Environment, Fisheries & Aquaculture Science
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2021-12-10T12:46:53