Beiträge zur Genese und Klassifizierung der Marschen. <i>I. Problematik der Marschen‐Genese und ‐Klassifizierung und Untersuchungen zum Ca/Mg‐Verhältnis</i>

Schroeder, D.; Brümmer, Gerhard W.

doi:10.1002/jpln.19691220305

Cited by 13 publications

(6 citation statements)

References 16 publications

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“…Marsh geogenesis (Giani and Landt, 2000) in the studied region of Shangyu County has been realized artificially by dam construction, pumping of suspended material into the enclosed area and drainage by artificial canals. In general natural marsh soil pedogenesis is characterized by development of soil structure due to dewatering and compaction, oxidation of reduced iron-, manganese-and sulphur compounds including the formation of accumulating horizons, decalcification, desalinisation, recharge of soil colloids and decomposition of organic matter (Schroeder and Bruemmer, 1969;Bruemmer et al, 1971;Mueller-Ahlten, 1994a,b;Giani and Landt, 2000;Giani et al, 2003). In diked and drained marshes these processes are accelerated, especially sulphide oxidation which causes change of redox conditions, decline of pH and altered mobility of phosphorus, iron and other metals (Portnoy, 1999).…”

Section: Introductionmentioning

confidence: 96%

Chemical soil properties of reclaimed marsh soil from Zhejiang Province P.R. China

Iost

Landgraf²,

Makeschin

2007

Geoderma

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Section: Introductionmentioning

confidence: 96%

Chemical soil properties of reclaimed marsh soil from Zhejiang Province P.R. China

Iost

Landgraf²,

Makeschin

2007

Geoderma

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“…Soils that undergo frequent changes from oxidizing (E H > 400 mV) via weakly reducing (E H 400 to 200 mV) and moderately reducing (E H 200 to –100 mV) to strongly reducing (E H < –100 mV) soil conditions, and vice versa , are located within diked marshes ( Mansfeldt , 1993, 2003, 2004). In these unique man‐made environments, soil‐forming processes can be studied over years to decades due to special features of the parent material ( Schroeder and Brümmer , 1969). This contrasts to many other soil environments, e.g.…”

Section: Introductionmentioning

confidence: 99%

Comparison of redox potential dynamics in a diked marsh soil: 1990 to 1993 versus 2011 to 2014

Dorau

Mansfeldt

2016

J. Plant Nutr. Soil Sci.

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As revealed by an earlier study, young diked marsh soils on the west coast of Schleswig‐Holstein (Germany) are characterized by pronounced redox potential (EH) dynamics. Since soil forming processes occur over a short period of time in these man‐made environments, the impact of pedogenesis on EH was examined by comparing the EH dynamics measured from November 1989 to October 1993 (weekly measurements) with those measured from November 2010 to October 2014 (hourly measurements) at the same study site in Polder Speicherkoog, Northern Germany. In addition, the necessity for high resolution EH measurements was assessed as well as the impact of climate change on EH. Redox potentials were determined in both monitoring campaigns with permanently installed platinum electrodes at 10, 30, 60, 100, and 150 cm soil depths. Soil properties were determined in November 1989 and in August 2013. In 24 years of soil formation, bulk density was demonstrated to increase by 28.5% and 33.3% in 10 and 20 cm depths, respectively, and the sulfide‐bearing Protothionic horizon lowered from 105 to 135 cm below surface level. Overall, EH dynamics were similar at all soil depths during both study periods with topsoil compaction not affecting EH. Annual alterations of EH were primarily driven by the variable climatic water balance (CWB) and by the corresponding water table (WT) fluctuations. These fluctuations resulted in occasional aeration of the subsoil and subsequent oxidation of sulfides. A forecast of CWB to 2100 predicts an intensified WT drawdown by elevated evapotranspiration rates that should amplify sulfide oxidation. To deduce the soil redox status on a seasonal or annual scale, readings taken at daily intervals are sufficient. To identify biogeochemical processes, it is necessary to monitor EH on an hourly basis because increases in EH values of up to 540 mV have been observed within a 24 hour period in temporarily waterlogged horizons.

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“…The titanium/calcium (Ti/Ca) ratio is a common indicator for weathering since easily soluble calcium carbonate is leached during soil formation, while rather immobile Ti is relatively enriched (Fischer et al, 2012;Kabata-Pendias, 2011). Iron (Fe) and sulphur (S) are used as indicators for reducing conditions and/or soil formation processes as both elements are associated with mineral formation by microbial activity (Croudace et al, 2006;Kabata-Pendias, 2011;Schroeder & Brümmer, 1968). Iron also correlates well with clayey sediments, frequently enriched in marsh soils (Reineck, 1982).…”

Section: Palaeoenvironmental Parameters (Peps): Sedimentary Geochemical and Microfaunal Analysesmentioning

confidence: 99%

“…At the very base, sediments contain abundant calcium sulphate minerals (gypsum, anhydrite) that are known to precipitate where calcareous seawater is mixed with sulphuric acid (e.g., from decay of organic matter in [semi-]terrestrial environments; Hecht, 1933). An increased basal S content may reflect a relative enrichment by microbial reduction of sea water sulphides (Schroeder & Brümmer, 1968), decreasing towards the top.…”

Section: Unit a (Recent Lower To High Salt Marsh)mentioning

confidence: 99%

“…To sum up, unit E reflects a distinct shift from a subtidal marine shallow water lagoonal environment to intertidal pioneer zone conditions, characterized by increased salinity or salinity fluctuations and accumulation of organic-rich mud (Reineck, 1982). Microbial reduction of sea water sulphides is known to significantly enrich S in freshly deposited muds (Schroeder & Brümmer, 1968). The distinct mottling along the upper boundary indicates the development of a characteristic monosulphide and disulphide zonation (Reineck, 1982).…”

Section: Unit a (Recent Lower To High Salt Marsh)mentioning

confidence: 99%

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Automated facies identification by Direct Push‐based sensing methods (CPT, HPT) and multivariate linear discriminant analysis to decipher geomorphological changes and storm surge impact on a medieval coastal landscape

Hadler

Vött

Willershäuser

et al. 2021

Earth Surf Processes Landf

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In AD 1362, a major storm surge drowned wide areas of cultivated medieval marshland along the north-western coast of Germany and turned them into tidal flats. This study presents a new methodological approach for the reconstruction of changing coastal landscapes developed from a study site in the Wadden Sea of North Frisia.Initially, we deciphered long-term as well as event-related short-term geomorphological changes, using a geoscientific standard approach of vibracoring, analyses of sedimentary, geochemical and microfaunal palaeoenvironmental parameters and radiocarbon dating. In a next step, Direct Push (DP)-based Cone Penetration Testing (CPT) and the Hydraulic Profiling Tool (HPT) were applied at vibracore locations to obtain in situ high-resolution stratigraphic data. In a last step, multivariate linear discriminant analysis (LDA) was successfully applied to efficiently identify different sedimentary facies (e.g., fossil marsh or tidal flat deposits) from the CPT and HPT test dataset, to map the facies' lateral distribution, also in comparison to reflection seismic measurements and test their potential to interpolate the borehole and CPT/HPT data. The training dataset acquired for the key site from coring and DP sensing finally allows an automated facies classification of CPT/HPT data obtained elsewhere within the study area. The new methodological approach allowed a detailed reconstruction of the local coastal landscape development in the interplay of natural marsh formation, medieval land reclamation and storm surge-related land losses.

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Beiträge zur Genese und Klassifizierung der Marschen. I. Problematik der Marschen‐Genese und ‐Klassifizierung und Untersuchungen zum Ca/Mg‐Verhältnis

Cited by 13 publications

References 16 publications

Chemical soil properties of reclaimed marsh soil from Zhejiang Province P.R. China

Chemical soil properties of reclaimed marsh soil from Zhejiang Province P.R. China

Comparison of redox potential dynamics in a diked marsh soil: 1990 to 1993 versus 2011 to 2014

Automated facies identification by Direct Push‐based sensing methods (CPT, HPT) and multivariate linear discriminant analysis to decipher geomorphological changes and storm surge impact on a medieval coastal landscape

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