Suspended particulate matter budget for the German Bight

Puls, W.; Heinrich, Hartmut; Mayer, Bernhard

doi:10.1016/s0025-326x(96)00161-0

Cited by 47 publications

(17 citation statements)

References 10 publications

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“…Due to limited ship time, the Frisian Front was sampled only in autumn 1999 with RV 'Pelagia'. The sample sites were chosen to reflect gradients in sedimentation rates (Cadée 1984, Puls et al 1997) and in organic matter supply (Eisma & Kalf 1987, Kröncke & Knust 1995. The co-ordinates and some characteristics of the sites are given in Table 1 and Fig.…”

Section: Methodsmentioning

confidence: 99%

Phospholipid fatty acid profiles at depositional and non-depositional sites in the North Sea

Stoeck¹,

Kröncke²,

Duineveld³

et al. 2002

Mar. Ecol. Prog. Ser.

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The distribution of ester-linked phospholipid fatty acid (PLFA) in sediments of 12 sampling stations located in the German Bight, Skagerrak/northern Kattegat, Frisian Front, Oyster Ground, eastern North Sea and the Dogger Bank area was studied to compare the in situ microbial community structure of depositional and non-depositional sites. A total of 36 fatty acids in the range of C 12 to C 24 were determined. They consisted of saturated, branched, monounsaturated, polyunsaturated and hydroxy fatty acids, and variation was revealed in the relative proportions (mol %) of these fatty acids. The distribution of specific fatty acids was significantly different between depositional and non-depositional sites. Additionally, we could discriminate communities of sites which are intermediate in sedimentation regime. Highest total PLFA content was found at depositional sites. The PLFA profiles of all sites were dominated by bacteria, with highest bacterial contribution to the sedimentary PLFA pool at depositional sites. A high proportion of aerobic prokaryotes (up to 40%) at depositional sites indicated the occurrence of aerobic microniches in the corresponding anoxic sediments. Bacterial groups being a component of the degradation pathways of complex macromolecules (e.g. Cytophaga and Actinomycetes) were found in significant higher abundances at depositional sites compared to the other sites. At depositional sites, sulphate-reducing bacteria (SRB) (e.g. Desulfobacter spp.) were more abundant compared to the other stations. The relative contribution of microeukaryotes to the sedimentary PLFA pool was significantly higher at depositional sites. A nutritionally limited benthic system at non-depositional sites in the offshore is indicated by a microbial community exposed to higher physiological stress than those of the organically enriched sediments of the depositional sites.

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Section: Methodsmentioning

confidence: 99%

Phospholipid fatty acid profiles at depositional and non-depositional sites in the North Sea

Stoeck¹,

Kröncke²,

Duineveld³

et al. 2002

Mar. Ecol. Prog. Ser.

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“…From about 5 to 10 cm depth downward the color changes to dark-greenish-grey and black, reflecting the onset of a sulfidic environment, with precipitation of iron sulfides. These sediments are typical for the Wadden Sea as they make up to 70% of all coastal sediments found in the German Wadden Sea (Puls et al, 1997). Layers and lenses of finer grained deposits (up to 10% clay) may occur below approximately 2 m , which are hydraulically important as they result in a semi confining character for deeper sediments (Riedel et al, 2010).…”

Section: Study Sitementioning

confidence: 98%

Rates of trace metal and nutrient diagenesis in an intertidal creek bank

Riedel

Lettmann

Schnetger

et al. 2011

Geochimica et Cosmochimica Acta

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“…A significant export to the north occurs as a consequence of the counter-clockwise circulation pattern of the North Sea , and a significant amount of reactive nitrogen (Nr) is eliminated by denitrification in the sediments and nitrate assimilation followed by sedimentation of detritus (Lohse et al, 1993). Suspended matter concentrations in the German Bight vary between 0.3 mg L − 1 , in calm weather conditions, and 35 mg L − 1 , during stormy weather (König et al, 1994;Puls et al, 1997). A prominent depositional area in the North Sea is the Helgoland mud area, where sediments accumulate due to a small-scale eddy driven by the interaction of the longshore coastal current, tidal dynamics, and the discharge from the Elbe and Weser rivers (Hertweck, 1983).…”

Section: Study Areamentioning

confidence: 99%