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BioGeoChemistry of Tidal Flats Sub-Project 3:
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Goal of the Project
These questions are addressed from three viewpoints: See the
Steigenberger S, F Terjung, H-P Grossart & R Reuter
(2004) Blue-fluorescence of NADPH as an indicator of marine primary production. EARSeL eProceedings 3(1), 18-25, 2004.
Download 500 kB pdf file.
Koelsch S, Dellwig O, Grunwald M, Reuter R &
Brumsack HJ (2004) Geochemistry of DOC-rich coastal watercourses in northwest Germany.
The 227th ACS National Meeting, Anaheim, CA, March 28-April 1, 2004; Abstract Schröder M, Barth H & Reuter R (2003)
Impact of Inelastic Scattering on the Underwater Daylight in the Ocean: Model Evaluation, Validation and First Results.
Applied Optics, 42(21), 4244-4260. Download 275 kB pdf file Dellwig O, F Terjung, H-J Brumsack & R Reuter (2003)
Understanding the Bioreactor Wadden Sea: a Geochemical and Physical Approach. Berichte - Forschungszentrum Terramare, 12, 47-50.
Download 500 kB pdf file Kölsch S, S Gebhardt, F Terjung, G Liebezeit, R Reuter J Rullkötter & H-J Brumsack (2003)
Freshwater Discharge into the East Frisian Wadden Sea: Geochemistry of Humic Matter-Rich Waters.
Berichte - Forschungszentrum Terramare, 12, 71-74, 2003
Download 270 kB pdf file Koelsch S, Dellwig O,
Reuter R, Terjung F & Brumsack H-J (2002) Water column signatures of the NW German
backbarrier tidal flats: sources and processes. DMG Jahrestagung 2002, Hamburg,
Conference Proceedings; Abstract Dellwig O, Hinrichs J
& Brumsack HJ (2002) Geochemical indications for changes in sedimentation in the
German Wadden Sea from the Holocene to the present. DMG Jahrestagung 2002, Hamburg,
Conference Proceedings; Abstract Brumsack HJ,
Dellwig O, Koelsch S, Reuter R & Terjung F (2002) Are water column signatures of
the NW German backbarrier tidal flat influenced by microbial activity?
Goldschmidt Conference 2002, Davos, Conference Proceedings;
Abstract Dellwig O,
Böttcher ME, Lipinski M & Brumsack H-J (2002) Trace metals in Holocene coastal
peats and their relation to pyrite formation (NW Germany). Chemical Geology, 182,
423-442 Hinrichs J, Dellwig O & Brumsack H-J (2002) Pb in sediments
and SPM of the German Bight: natural versus anthropogenic origin. Applied Geochemistry, 17, 621-632
Barth H,
Reuter R & Schröder M (2001) Measurement and simulation of substance
specific contributions of phytoplankton, gelbstoff, and mineral particles to
the underwater light field in coastal waters. EARSeL eProceedings 1, 165-174.
Download 4.4 MB pdf file. Dellwig O,
Hinrichs J, Hild A & Brumsack H-J (2000) Changing sedimentation in tidal flat
sediments of the Southern North Sea from the Holocene to the present:
A geochemical approach. Journal of Sea Research, 44, 195-208 Gehm G,
Wilken M, Liebezeit G (2000) Temporal and spatial high resolution analysis of nutrient
dynamics in the near bottom layer of the Wadden Sea. Senckenbergiana
marit 30: 105-114 Schnetger B,
Hinrichs J, Dellwig O, Shaw T & Brumsack H-J (2000) The significance of radionuclides
and trace elements in a back barrier tidal area: Results from the German Wadden.
In: Distribution and speciation of radionuclides in the environment (Eds. J Inaba,
S Hisumatsu & Y Ohtsuka). Proc Int Workshop Distribution and Speciation of
Radionuclides in the Environment. Rokkasho, Aomori, Japan, 10/2000, pp. 99-106 Heuermann R, Reuter R & Willkomm R (1999) RAMSES: A modular multispectral radiometer
for light measurements in the UV and VIS. In: Environmental Sensing and Applications.
Proc. EUROPTO Series, SPIE Vol 3821, 279-285.
Download 1.5 MB pdf file. Liebezeit, G, Kraul T (1999) Analytical fractionation of particulate
phosphorus in the Wadden Sea, southern North Sea. Senckenbergiana marit 30:
67-72 Böttcher
ME, Oelschläger B, Höpner Th, Brumsack H-J, Rullkötter J (1998) Sulfate
reduction related to the early diagenetic degradation of organic matter and
"black spot" formation in tidal sandflats of the German Wadden Sea
(southern North Sea): stable isotope (13
Who we are
Events
Co-operation
Methods
Ship Cruises
Time-Series Station
Publications
Gallery
Welcome to the Project
Budget and States of the Backbarrier Tidal Flat Water Column
The East Frisian tidal flats are continuously influenced by open marine (from the North Sea) and on-shore processes. In this
sub-project, we want to elucidate whether the input/output of dissolved and particulate matter between the backbarrier and
offshore areas is presently in a steady state or whether the tidal flats suffer a net loss of material. We intend to study the
seasonal dynamics of seaward and landward inputs as well as their relation to the retention or mobilisation of specific
compounds.

Goal of the Project
More details are found here.
Elements of Sub-project 3:
Budget and States of the
Backbarrier Tidal Flat Water Column
Project Plan Phase 1 (Oct 2000, 2.1 MB pdf-file)
Project Report Phase 1 (Sept 2003, 4.9 MB pdf-file)
Project Plan Phase 2 (Oct 2003, 480 kB pdf-file)
for a full description (in German)

Project members

Events
Weekly project meeting:
Ship cruises in 2007:
Symposia, Workshops:

Co-operation
Institutes:
Suspended particles, sediments
Substances and processes in the water column
Freshwater discharge in to the back-barrier tidal flat
Tim Shaw: Geochemistry and element analysis.
Marcel Wernand: Bio-optics of tidal flat regionsCompanies:
time-series station
Methods
Water and dissolved substances
Compound
Parameter
Method
Symbol
in situ: CAPITALS
seawater
temperature, salinity
CTD probe
CTD
oxygen, pH
CTD probe
CTD
gelbstoff absorption
multispectral transmissometer
MST
downwelling irradiance, upwelling radiance
multispectral radiometer
RAD
gelbstoff absorption
spectrophotometer
phot
gelbstoff fluorescence
spectrofluorometer
flu
Ba, Fe, Mn, Mo, U, V
ICP-MS
diss elem
alkalinity
gran-titration
alk
DOC
combustion/IR-detection
doc
inorganic nutrients (nitrite, nitrate, ammonia, reactive phosphate, silicate)
wet chemical analysis, photometry
nut
dissolved organic phosphorus
wet chemical analysis, photometry
dop
porewater
Ba, Co, Cr, Fe, Mn, Mo, Sb, U, V
ICP-MS
porewater elem
alkalinity
gran titration
alk
DOC
combustion/IR-detection
doc
freshwater
temperature, salinity
CTD probe
CTD
gelbstoff absorption
spectrophotometer
phot
gelbstoff fluorescence
spectrofluorometer
flu
major and trace elements
ICP-OES, ICP-MS
diss elem
anions
ion chromatography
anion
alkalinity
gran titration
alk
DOC
combustion/IR detection
doc
inorganic nutrients (nitrite, nitrate, ammonia, reactive phosphate, silicate)
wet chemical analysis, photometry
nut
dissolved organic phosphorus
wet chemical analysis, photometry
dop Suspended particles (>0.45 µm)
Compound
Parameter
Method
Symbol
in situ: CAPITALS
seawater/freshwater
major and trace elements (e.g. Al, Fe, P, Cd, Mn, Pb, Zr, REE)
ICP-OES, ICP-MS
part elem
stable Pb isotopes
ICP-MS
pb
TC, TIC (TOC)
coulometry
toc
suspended matter
gravimetry
spm
phosphorus fractionated (organic P, inorganic P)
wet chemical analysis, photometry
pip, pop
total chlorophyll
fluorimetry of extracts
tchl
seawater
suspended matter
multispectral transmissometer
MST
chlorophyll
multispectral transmissometer
MST Sediments
Compound
Parameter
Method
Symbol
major and trace elements (e.g. Si, Al, Ca, Fe, P, Co, Cr, Mn, Zn, Zr)
XRF
sed elem
stable Pb isotopes
ICP-MS
pb
TC, TIC (TOC)
coulometry
toc
Ship Cruises
Date
Area
Parameters
see Methods
28 Aug - 1 Sept 1999
German Bight
CTD-MST-FLU-flu-phot
diss/part elem-alk-doc
27-30 Sept 1999
Spiekeroog backbarrier tidal flat
CTD-MST-flu
diss/part elem-alk-doc
24-27 Jan 2000
Spiekeroog backbarrier tidal flat
CTD-MST-flu-phot
diss/part elem-alk-doc
17-19 Apr 2000
Spiekeroog backbarrier tidal flat
CTD-MST-flu-phot
diss/part/porewater elem-alk-doc
7-11 Aug 2000
Spiekeroog backbarrier tidal flat
CTD-MST-flu-phot
diss/part elem-alk-doc
9-22 Sept 2000
German Bight, Skagerrak
CTD-MST-FLU-flu-phot
5-13 Oct 2000
German Bight
CTD-MST-FLU-flu-phot
5-8 June 2001
Spiekeroog backbarrier tidal flat
CTD-flu
24-28 Sept 2001
Spiekeroog backbarrier tidal flat
CTD-MST-flu
7-12 Oct 2001
north of Spiekeroog
rivers Elbe and WeserCTD-MST-FLU-flu-phot
diss/part elem-alk-doc
8-10 Oct 2001
Spiekeroog backbarrier tidal flat
CTD-MST-flu
diss/part/porewater elem-alk-doc
13-15 Feb 2002
Spiekeroog backbarrier tidal flat
CTD-MST-flu
diss/part/porewater elem-alk-doc
27-31 May 2002
Spiekeroog backbarrier tidal flat
CTD-MST-flu
diss/part elem-alk-doc
20-23 August 2002
Spiekeroog backbarrier tidal flat
CTD-MST-flu
diss/part/porewater elem-alk-doc
7-11 October 2002
north of Spiekeroog
German BightCTD-MST-FLU-flu-phot
diss/part/porewater elem-alk-doc
18-22 November 2002
Spiekeroog backbarrier tidal flat
CTD-MST-flu
diss/part/porewater elem-alk-doc
10-13 February 2003
Spiekeroog backbarrier tidal flat
CTD-flu
diss/part/porewater elem-alk-doc
22-23 July 2003
Spiekeroog backbarrier tidal flat
CTD-MST-flu
diss/part/porewater elem-alk-doc
11-14 July 2003
Spiekeroog backbarrier tidal flat
CTD-MST-flu
diss/part/porewater elem-alk-doc
10-14 November 2003
Spiekeroog backbarrier tidal flat
CTD-MST-flu
diss/part/porewater elem-alk-doc
19-22 January 2004
Spiekeroog backbarrier tidal flat
CTD-MST-flu
diss/part/porewater elem-alk-doc
03-07 May 2004
north of Spiekeroog
German BightCTD-MST-FLU-flu-phot
diss/part elem-alk-doc
04-09 October 2004
north of Spiekeroog
German BightCTD-MST-FLU-flu-phot
diss/part elem-alk-doc
08-12 November 2004
Spiekeroog backbarrier tidal flat
CTD-MST-flu
diss/part/porewater elem-alk-doc
07-13 January 2005
Spiekeroog backbarrier tidal flat
CTD-flu
diss/part/porewater elem-alk-doc
16-20 March 2005 (1)
north of Spiekeroog
German BightFLU-flu-phot
diss/part elem-alk-doc
21-23 March 2005 (2)
north of Spiekeroog
German BightCTD-MST-FLU-flu-RAD
diss/part elem-alk-doc
25-28 April 2005
Spiekeroog backbarrier tidal flat
flu
diss/part/porewater elem-alk-doc
18-22 July 2005
north of Spiekeroog
German BightFLU-flu-RAD
diss/part elem-alk-doc
18-22 July 2005
Spiekeroog backbarrier tidal flat
MST-flu-RAD
diss/part/porewater elem-alk-doc
14-18 November 2005
Spiekeroog backbarrier tidal flat
CTD-MST-flu
diss/part/porewater elem-alk-doc
15-19 November 2005
north of Spiekeroog
German BightCTD-MST-FLU-flu-RAD
diss/part elem-alk-doc
27-30 March 2006
north of Spiekeroog
German BightCTD-MST-FLU-flu-RAD-phot
02-05 May 2006
Spiekeroog backbarrier tidal flat
CTD-MST-FLU-flu-RAD
10-14 July 2006
Spiekeroog backbarrier tidal flat
CTD-MST-FLU-flu-RAD
15-21 August 2006
north of Spiekeroog
German BightCTD-MST-FLU-flu-RAD-phot
18-22 Sept 2006
north of Spiekeroog
German BightCTD-MST-FLU-flu-RAD
23-27 Sept 2006
Spiekeroog backbarrier tidal flat
CTD-MST-FLU-flu-RAD
Publications
Hild A (1997) Geochemie der Sedimente und Schwebstoffe im
Rückseitenwatt von Spiekeroog und ihre Beeinflussung durch biologische
Aktivität. Forschungszentrum Terramare Berichte Nr 5, 33 S und Anhang. Dissertation, Universität Oldenburg
Barth H,
Grisard K, Holtsch K, Reuter R, Stute U (1997) A polychromatic transmissometer
for in situ measurements of suspended particles and gelbstoff in water. Appl
Optics 36: 7919-7928
Liebezeit
G, Behrends B, Kraul T (1996) Variability of nutrients and particulate matter
in backbarrier tidal flats of the East Frisian Wadden Sea. Senckenbergiana
marit 26: 195-202
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