Lake Arendsee - a limno-geological archive
Archive: Lake Sediments
Area of Research: Lake Arend
Field: Paleolimnology
Status:
Project Coordinator:
Dr. Burkhard Scharf
UFZ Leipzig-Halle GmbH
Sektion Gewässerforschung Magdeburg
Gruppe Ökotechnologie und Sedimentologie
Brückstr. 3a
39114 Magdeburg
Tel.: ++49 391-8109-432, -101 (Sekr.)
Fax: ++49 391-8109-111
e-mail: scharf@lake.gm.ufz.de
Collaborators:
Rüdiger Röhrig
e-mail: Rueroer@aol.com
Dr. Bernhard Mayer
e-mail: bernhard@earth.geo.ucalgary.ca
Dr. K. Friese
e-mail: friese@gmac7.gm.ufz.de
Dr. G. Strauch
e-mail: strauch@hdg.ufz.de
Dr. R. Trettin
e-mail: trettin@hdg.ufz.de
Dr. Michael Hupfer
e-mail: hupfer@igb-berlin.de
Dr. A. Schwalb
e-mail: aschwal@uni-goettingen.de
Institute-Homepage:
UFZ
Abstract:
The area of Lake Arendsee is located in the eastern part of Northern Germany (fig. 1). Before the formation of Lake Arendsee, there existed two other lakes, Lake Wendischer See in the northern part and Lake Fauler See 1.5 km to the east of Lake Arendsee (historical map of 1786, fig. 2). A relic of Lake Wendischer See is the marl bench in Lake Arendsee. Lake Fauler See was drained into Lake Arendsee since 1960. The youngest profundal sediment of Lake Arendsee is varved (fig. 3), the elder is still unknown. The lake was formed due to the solution of a salt dome in the underground (sinkhole) and is now 50 m deep. The upper 2.6 m of the marl bench was dated 3,300 till 4,300 years BP. The sediment thickness of Lake Fauler See is 5 m. Beneath it there is at least 1.5 m sand. According to Hein (1931) Lake Fauler See was a bog. The profile of the peatbog was dated between Atlantikum and Subboreal.
Hydrography of Lake Arendsee (from Rönicke, 1986)
| area | 5.138 km² |
| depth max | 48.7 m echo-sounder profile (fig. 4) |
| depth average | 28.6 m (measured in 1995) |
| volume | 146.9 Mio m³ |
| catchment area | 29.8 km² |
| time of retention | 114 years |
| water exchange rate per year | 0.88 % (1974-1986) |
Aims of the project:
1. Statements about the paleotemperature of Lake Arendsee and Lake Wendischer See by d18O- and Sr/Mg-measurements of ostracod-valves
2. Reconstruction of paleotemperature of Lake Fauler See by d18O- and d13C- measurements of cellulose-extract
3. Climatic influence on the vegetation of the Altmark region
4. Development of productivity (trophic state) in a lake and a peatbog depending on climate
5. Climatic influence on the sedimentary accumulation rate of a lake and a peatbog
6. Determination of climatic changes and the reaction time of a lake and a peatbog
7. Influence of the trophic status on the phosphorus-retention
8. Effect of the climate on the trophic state and the oxygen conditions
9. Time of origin of Lake Arendsee, Lake Wendischer See, and Lake Fauler See
10. Is there a relationship between climate and the ocurrence of the lakes?
11. Did hypersaline water occur in Lake Arendsee since the collapse 822 A.D.?
12. When was the first time of freshwater?
13. Was the collapse in 1685 another solution of the salt dome or just the flattening of a steep embankment?
Distribution of ostracod species in a core of Lake Arendsee (Scharf et al. 1995)
Distribution of cladoceran species in core of Lake Arendsee (Scharf et al. 1995)
Figures:
(fig.
5: 33 kb) Distribution of ostracod species in a core of Lake Arendsee (Scharf et al. 1995)
(fig.6:
43kb): Distribution of cladoceran species in a core of Lake Arendsee (Scharf et al. 1995)
More information:
Hein, L. (1931): Beiträge zur postglazialen Waldgeschichte Nordeuropas. Pollenanalyse aus mjärkischen Mooren. - Verh. Bot. Ver. Provinz Brandenburg 73: 6-83
Meußling, O. (1993): Marginalien zur Arendsee-Forschung. In: Meußling, O. & Batt, H. (Hrsg.): Der Arendsee anno 2000? Erstes See-Symposium: 27-32
Rönicke, H. (1986): Beitrag zur Fixation des molekularen Stickstoffs durch planktische Cyanophyceen in einem dimiktischen, schwach durchflossenen Standgewässer. - Diss. A, Humbold-Univ., Berlin
Scharf, B. W.; Hollwedel, W. & Jüttner, I. (1995): Fossil (Holocene) and living Ostracoda and Cladocera (Crustacea) from Lake Arendsee, Germany. In: Ostracoda and Biostratigraphy. J. Riha. Rotterdam, Balkena: 321-332.
Scharf, B. W. (1998): Eutrophication history of Lake Arendsee (Germany). - Palaeogeogr. Palaeoclim. Palaeoecol. (in press)
DFG Priority-Programme "Changes of the Geo-Biosphere"
