NOAA/WDS Paleoclimatology - Lake Holzmaar, Germany Holocene Carbon Isotope Data
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Lake. The data include parameters of paleolimnology with a geographic location of Germany, Western Europe. The time period coverage is from 11492 to 419 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
Dataset Citation
- Cite as: Lücke, A.; Zolitschka, B. (2008-02-02): NOAA/WDS Paleoclimatology - Lake Holzmaar, Germany Holocene Carbon Isotope Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/gbf5-1m34. Accessed [date].
- Please refer to Credit tab for full citation information.
Dataset Identifiers
- doi:10.25921/gbf5-1m34
- noaa-lake-6050
- NCEI DSI 1200_02
- NCEI DSI 1200_01
ISO 19115-2 Metadata
noaa-lake-6050
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Ordering Instructions | Contact NCEI for other distribution options and instructions. |
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NOAA National Centers for Environmental Information ncei.info@noaa.gov |
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NOAA National Centers for Environmental Information ncei.info@noaa.gov |
Dataset Point of Contact | Data Center Contact NOAA World Data Service for Paleoclimatology 828-271-4800 paleo@noaa.gov |
Coverage Description | Date Range: 11492 cal yr BP to 419 cal yr BP; |
Time Period | -9542 to 1531 |
Spatial Bounding Box Coordinates |
West: 6.8833
East: 6.8833
South: 50.1166
North: 50.1166
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Data Presentation Form | Digital table - digital representation of facts or figures systematically displayed, especially in columns |
Dataset Progress Status | Complete - production of the data has been completed |
Data Update Frequency | Data update frequency not available |
Supplemental Information | STUDY NOTES: Holocene total organic carbon and organic carbon isotope data from varved sediment from Lake Holzmaar. Measured parameters are organic carbon content (TOC) on decarbonized samples and organic matter carbon isotopes (d13Corg) calibrated vs. VPDB. Standard deviation of isotope analysis is 0.1 per mil. The composite profile (HZM 2a/b/c) was sampled with a depth resolution of 1 cm. Missing data are flagged as -9999.00 ABSTRACT SUPPLIED BY ORIGINATOR: A composite varve-dated 11.4 m long sediment sequence from Lake Holzmaar, situated in the Eifel region of western Germany, was investigated for total organic matter content, total nitrogen content and stable organic carbon isotopes. Mean time resolution is 75 years for TN and 14 years for d13Corg. On millennial time scales primary production of lacustrine algae strongly depends on the delivery of nutrients from the catchment. The respective carbon isotope record is characterized by marked variations of d13Corg ranging from -36.0 per mil to -27.0 per mil and includes a number of pronounced shifts. Reactions of the lacustrine system and the catchment to changes of environmental parameters, e.g. runoff, solar radiation and temperature, induce changes of algal associations and of lacustrine primary production which are reflected in the sediments as carbon isotope variations. Clear evidence of ecosystem reorganizations is detected by the carbon isotope record around 14,200, 10,400, 9600, 5500, 2700, 1700 and 900 varve years BP. In particular, the Holocene events of 9600, around 5500 and 2700 are interpreted as the expression of massive changes of the climate system. The steady rise of d13Corg values during the mid-Holocene is interpreted as a continuous climatic amelioration reaching an optimum around 6500 varve years BP. Rapid and large changes of d13Corg values from 2700 varve years BP to the present indicate major disturbances in the catchment area. These are most probably related to deforestation or reforestation and runoff changes, presumably in conjunction with human impact. Carbon isotopes, thus, characterize the Holzmaar ecosystem in time revealing lacustrine palaeoproductivity as well as providing palaeoenvironmental and palaeoclimatic information. |
Purpose | Records of past climate and environment derived from lake sediment records. Parameter keywords describe what was measured in this dataset. Additional summary information can be found in the abstracts of papers listed in the dataset citations. |
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Global Change Master Directory (GCMD) Science Keywords
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Last Modified: 2023-09-01
For questions about the information on this page, please email: ncei.info@noaa.gov
For questions about the information on this page, please email: ncei.info@noaa.gov