2007 - 2008 Centre for Environment, Fisheries & Aquaculture Science (Cefas) 2007-2008 North Sea Sediment Oxygen Profiles
This dataset records the depth to which free oxygen is available in seabed sediments; referred to as the Oxygen Penetration Depth (OPD). It also includes the original oxygen profile data, recording the depeletion of oxygen as the sediment is penetrated. Samples were collected from sites in the North Sea: Northern Dogger Bank, Oyster Ground and Sean Gasfield during various cruises on RV Cefas Endeavour throughout 2007 and 2008.
dataset
CEFASada68af3-ffa8-479d-87fb-a628fbbc4525
http://www.cefas.co.uk/
eng
OGP
urn:ogc:def:crs:EPSG::4326
revision
2011-03-25
publication
2008-06-01
2
5
55.75
53
revision
2010-05-18
2007-01-01
2008-12-31
publication
2021-12-14
notPlanned
The standard methodology comprises driving a very fine metal-in-glass oxygen probe into undisturbed core samples recovered from the seabed using a box corer (NIOZ design). The probe is driven ino the sediment in millimetre depth increments, recording the 'oxygen profile' which can be displayed graphically. The depth at which the probe first records zero oxygen is the Oxygen Penetration Depth. Records include data from Defra funded project ME3205 entitled "Marine Ecosystem Connections: carbon and nitrogen fluxes through the benthic and pelagic domains" which sampled three fixed stations in the North Sea. Semi-autonomous in situ systems were deployed at each study site to follow temporal changes in environmental conditions such as temperature, light, nutrients, and chlorophyll fluorescence. Detailed studies of pelagic and benthic food webs were carried out during 8 research cruises spaced to capture seasonal changes (February , April, May, September, and October/November 2007; January, April and September 2008). Cruise sampling was focussed on identifying ecosystem structure, in terms of seabed types, physics, chemistry, and the abundance (as numbers and/or biomass) and diversity of planktonic and benthic communities (from micro- to macro- organisms). Experimental work was carried out to obtain estimates of the rates of key processes such as primary production, zooplankton secondary production, carbon cycling, and nutrient fluxes across the sediment-seawater interface (see Painting et al. 2010) Further details of the project can be found at: `http://randd.defra.gov.uk/Default.aspx?Menu=Menu&Module=More&Location=None&Completed=0&ProjectID=13011`_ .. _`http://randd.defra.gov.uk/default.aspx?menu=menu&module=more&location=none&completed=0&projectid=13011`: http://randd.defra.gov.uk/Default.aspx?Menu=Menu&Module=More&Location=None&Completed=0&ProjectID=13011
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
Cefas Lowestoft Laboratory
Pakefield Road
Lowestoft
NR33 0HT
UK
+44 (0)1502 562244
pointOfContact
2021-12-14T12:24:59