The record of climatic change in the geological archives of shallow marine, coastal, and adjacent lowland areas of Northern Germany

Gerdes, Gisela; Petzelberger, B.E.M; Scholz‐Böttcher, Barbara M.; Streif, Hansjörg

doi:10.1016/s0277-3791(02)00183-x

Cited by 30 publications

(20 citation statements)

References 8 publications

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“…Biogeochemical studies of recent sediments which include biomarkers for the same purpose are less common (e.g. Ficken and Farrimond, 1995;Zimmerman and Canuel, 2000;Pinturier-Geiss et al, 2002;Gerdes et al, 2003;Smittenberg et al, 2004b), even though this is a widely used method in paleoceanographic research (e.g. Brassell et al, 1986).…”

Section: Introductionmentioning

confidence: 99%

Pre- and post-industrial environmental changes as revealed by the biogeochemical sedimentary record of Drammensfjord, Norway

et al. 2005

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The biogeochemical sedimentary record of the anoxic Drammensf jord, Norway, was investigated on a decadal to centennial time scale over the last millennium, in order to reconstruct the pre-industrial f jord environment and ecosystem and humaninduced environmental changes. The sediments were dated by a combination of 14 C and 210 Pb analysis and varve counting. Analysis of the bulk sedimentary parameters and of the biomarker distribution revealed that the sedimentary organic matter of the f jord is primarily of terrigenous origin, indicating that the f jord was oligotrophic or mesotrophic. The f jord's bottom water has been continuously euxinic since at least 1000 AD, but photic zone euxinia occurred only irregularly in the f jord. The organic matter flux and composition remained virtually invariable until the 18th century. After that time, the flux of material derived from coniferous trees started to increase, indicated by elevated concentrations of dehydroabietic acid and related compounds, but also by raising levels of C 24 n-alcohols and fatty acids. This marked the onset of sawmill activities in the hinterland. After the beginning of the industrial revolution, around 1850, the flux of organic waste from sawmills and paper mills increased substantially. It is suggested that slow bacterial degradation of this relatively nutrient-poor organic waste caused a gradual eutrophication trend, which is reflected in substantial increased bacterial and moderately increased other aquatic biomarker accumulation rates. After the industrial revolution, this trend accelerated and was possibly enhanced by a growing population of the area with accompanying agricultural and domestic waste. This promoted primary productivity and changed the phytoplankton composition in the f jord. D

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Section: Introductionmentioning

confidence: 99%

Pre- and post-industrial environmental changes as revealed by the biogeochemical sedimentary record of Drammensfjord, Norway

et al. 2005

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“…In exchange, the shape of the longshore bar controls the amount of energy that reaches the beachface and thus controls sediment erosion or accumulation. Preserved mid-Holocene peat deposits (6,725 ± 87 cal yr BP) at the base of the longshore bar (C3.1) archive information about associated paleo-landscapes, pre-existing floodplains, habitat migration, sediment stability and its seasonal equilibrium morphology (Gerdes et al, 2003;Westley and Dix, 2006;Plets et al, 2007). The sub-marine extension and formation time of the peat deposits is discussed in the following section.…”

Section: Geomorphological Settingmentioning

confidence: 99%

“…A former sub-marine extension of the peat layer in the northern part of the study area is further supported by core C5. The core contains alternating layers of minerogenic lake sediments and fine sand, with a corresponding sediment sequence found below the peat deposits in core B4 (Gerdes et al, 2003).…”

Section: Sub-marine Extension Of the Peat Depositsmentioning

confidence: 99%

Sub-marine Continuation of Peat Deposits From a Coastal Peatland in the Southern Baltic Sea and its Holocene Development

et al. 2018

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Coastal low-lying areas along the southern Baltic Sea provide good conditions for coastal peatland formation. At the beginning of the Holocene, the Littorina Sea transgression caused coastal flooding, submergence and erosion of ancient coastlines and former terrestrial material. The present Heiligensee and Hütelmoor peat deposits (located near Rostock in Northern Germany) were found to continue more than 90 m in front of the coastline based on on-and offshore sediment cores and geo-acoustic surveys. The seaward areal extent of the coastal peatland is estimated to be around 0.16-0.2 km 2 . The offshore boundary of the former peatland roughly coincides with the offshore limit of a dynamic coast-parallel longshore bar, with peat deposits eroded seawards. While additional organic-rich layers were found further offshore below a small sand ridge system, no connection to the former peatlands can be established based on 14 C age and C/N ratios. The preserved submerged peat deposits with organic carbon contents of 37% in front of the coastal peatland Heiligensee and Hütelmoor was radiocarbondated to 6725 ± 87 and 7024 ± 73 cal yr BP, respectively, indicating an earlier onset of the peatland formation as presently published. The formation time of the peat layers reveals information about the local sea level rise. The local sea level curve derived from our 14 C-dated organic-rich layers is in general agreement to nearby sea level reconstructions (North Rügen and Fischland, Northern Germany), with differences explained by slightly varying local isostatic movements.

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“…The existence of these interrelations can be deduced from the outcome of numerous studies based both on an analysis of direct measurements (the last 200-300 yr) and on indirect analyses based on a signal recorded, for instance, in lake and deep-sea sediments, corals, calcareous tufa, or ice cores, projecting changes taking place in the entire Quaternary or solely Late Glacial and Holocene periods (e.g. Boryczka 1993;Ralska-Jasiewiczowa 1993;Starkel 1999Starkel , 2001Starkel , 2005bAlley 2000;Wagner and Melles 2002;Gerdes et al 2003;Zolitschka et al 2003;Vlag et al 2004). …”

Section: Introductionmentioning

confidence: 99%

The Formation of Deluvial and Alluvial Cones as a Consequence of Human Settlement on a Loess Plateau: An Example from the Chroberz Area (Poland)

Szwarczewski¹

2009

Radiocarbon

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ABSTRACT. The area of Chroberz (southern Poland) poses questions of an interdisciplinary character comprising geomorphologic, sedimentation, and archaeological-historical problems. The main aim of this study was to identify the geomorphologic response to changes in the natural environment that took place in the area of the loess plateau (and its close vicinity) as a result of its settlement by man and of climate change. Periods of particularly intense human activity (land-use changes, deforestation, and agriculture) were recorded as changes in the type of sedimentation, i.e. organic sedimentation substituted for mineral one; it was extremely intensive during the Neolithic Age, Iron Age, and Early Middle Ages. The conducted fieldwork research, analysis of available archaeological materials, and radiocarbon dating results show that there is a direct connection between human economic activity in primeval and historic times and between soil erosion and accumulation of colluvial/alluvial fans in the surroundings of the locality of Chroberz. 14 C dates documenting the age of colluvial sediment formation show that individual areas of the upland were settled by humans asynchronously. On the basis of a low facial variability, or, occasionally, even homogeneity, of individual colluvia (from soil erosion) and their considerable thickness, it can be concluded that the land was in constant use or that the intervals with no human activity were relatively short. The progressing human impact process is visible both in the form progradation recorded as the changes in 14 C ages (e.g. from 1440 ± 100 to 780 ± 80 BP) and in textural (e.g. chemical) features of sediments of which the examined fans are composed.

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The record of climatic change in the geological archives of shallow marine, coastal, and adjacent lowland areas of Northern Germany

Cited by 30 publications

References 8 publications

Pre- and post-industrial environmental changes as revealed by the biogeochemical sedimentary record of Drammensfjord, Norway

Pre- and post-industrial environmental changes as revealed by the biogeochemical sedimentary record of Drammensfjord, Norway

Sub-marine Continuation of Peat Deposits From a Coastal Peatland in the Southern Baltic Sea and its Holocene Development

The Formation of Deluvial and Alluvial Cones as a Consequence of Human Settlement on a Loess Plateau: An Example from the Chroberz Area (Poland)

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