Sedimentchemische Untersuchungen in Küstengewässern der Deutschen Demokratischen Republik Teil 17. Spezielle Untersuchungen zur Dynamik der Oberflächensedimente eines flachen Boddengewässers (Barther Bodden)

Nausch, Günther; Schlungbaum, G.

doi:10.1002/aheh.19840120112

Cited by 5 publications

(2 citation statements)

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“…At that time, sediment samples were taken in every lagoon part in a 500 to 1,000 m sampling grid in shallow and deep areas. Certain P hotspots were shown, often in deeper waters (e.g., Nausch and Schlungbaum, 1984). The sampling coincided with the peak of riverine TP inputs of up to 80 t a −1 during 1976 to 1980.…”

Section: Introductionmentioning

confidence: 71%

Phosphorus Contents Re-visited After 40 Years in Muddy and Sandy Sediments of a Temperate Lagoon System

et al. 2018

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Worldwide, coastal water bodies suffer from anthropogenically elevated nutrient inputs, which led to eutrophication. Sediments in eutrophic systems are assumed to be an important internal nutrient source. The total phosphorus (TP) concentration (mg g −1 dry mass) is widely used as a proxy for the sediment nutrient load. 2-D distribution maps of TP concentrations are used for management plans, where areas of high TP values are marked in red. However, the sediment density is lowered at increasing water content, which can lead to different TP stocks per g m −2 . The aim of this study was, to do a re-evaluation of TP concentrations and stocks in the model ecosystem of the Darß-Zingst Bodden chain, a typical lagoon system of the southern Baltic Sea. Sediment cores were taken at eight stations along transects from shallow to deeper parts of the lagoon. Samples were analyzed for TP, water and organic content, as well as density. This data set was compared to results from a sediment survey during the time of highest nutrient inputs (40 years ago) at the same sampling stations. TP concentrations from 40 years ago and today were in the same range. The highest TP concentrations (up to 0.6 mg TP g −1 dry mass) were found in the deeper basins and lowest concentrations in the shallow areas of the lagoon (down to 0.05 mg TP g −1 dry mass). However, normalization over dry bulk density (DBD) reversed some results. The highest TP stocks (up to 5 g TP m −2 ) were then found in the shallow areas and lowest stocks (down to 0.2 g TP m −2 ) in the deeper parts of the lagoon. Some stations did not exhibit any differences of TP at all, even after including the DBD. These findings suggest that there seems to be no up-, or downward trend in nutrient concentrations of sediments even after 25 years of reduced external nutrient inputs. Furthermore, TP stocks point to possible diffuse P entry pathways that counteract external nutrient reductions. These findings can have an impact on possible countermeasures for ecosystems rehabilitation, like sediment removal or nutrient reductions in the adjacent land.

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Section: Introductionmentioning

confidence: 71%

Phosphorus Contents Re-visited After 40 Years in Muddy and Sandy Sediments of a Temperate Lagoon System

et al. 2018

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“…In order to document the expansion of these organic sediments, extensive mapping was initialised from 1977 to 1990. Mapping included the sediments' surface structure of all Bodden within the DZBC [41]. Four repeated sampling events of the Barther Bodden clarified the very high sedimentary dynamics of the shallow Bodden waters (Fig.…”

Section: Distribution Of Sediment Structures In the Darss-zingst Boddmentioning

confidence: 99%

Nutrient accumulation and nutrient retention in coastal waters – 30 years investigation in the Darss‐Zingst Bodden chain

Selig¹,

Baudler

Krech

et al. 2006

Acta hydrochim. hydrobiol.

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Coastal waters are transitional zones between limnic waters and marine systems. The anthropogenic impact on these water bodies is high and a rapid change of trophic level was observed within the last 50 years. In the Darss-Zingst Bodden chain (southern Baltic Sea -MecklenburgWest Pomerania, Germany), the change in trophic state during the last thirty years can be reconstructed by long-term monitoring of chemical, hydrographical and biological parameters with an up to daily resolution. Until the 1980s, increased input of the anthropogenic nutrient load from the catchment area has been documented. However, with the implementation of the HELCOM recommendations the input of phosphorus and nitrogen was reduced in the 1990s. In contrast to the reduction of nutrient inputs, a decrease in nutrient concentrations and primary production could not be observed. The reasons are a high internal nutrient load and the release of nutrients out of the sediments. Numerous research projects allowed the description and quantification of these processes. Today, the internal phosphorus pool exceeds the external phosphorus load several fold. These results are the scientific basis for the development of restoration strategies of coastal waters. The development of suitable management plans is necessary for the implementation of the EU Water Framework Directive to guarantee a good ecological state by 2015. The long time acquisition of monitoring data and voluminous complementary specific research projects was enabled by the local field research conditions of the Biological Station of the University of Rostock in Zingst.

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Polychlorinated biphenyls (PCB) and organochlorine pesticides in sediments of the baltic and coastal waters of Mecklenburg-Vorpommern

Dannenberger

Lerz

1996

Deutsche Hydrographische Zeitschrift

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Sedimentchemische Untersuchungen in Küstengewässern der Deutschen Demokratischen Republik Teil 17. Spezielle Untersuchungen zur Dynamik der Oberflächensedimente eines flachen Boddengewässers (Barther Bodden)

Cited by 5 publications

References 4 publications

Phosphorus Contents Re-visited After 40 Years in Muddy and Sandy Sediments of a Temperate Lagoon System

Phosphorus Contents Re-visited After 40 Years in Muddy and Sandy Sediments of a Temperate Lagoon System

Nutrient accumulation and nutrient retention in coastal waters – 30 years investigation in the Darss‐Zingst Bodden chain

Polychlorinated biphenyls (PCB) and organochlorine pesticides in sediments of the baltic and coastal waters of Mecklenburg-Vorpommern

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