The mixing regime of Lake Ammersee

Authors

  • Thomas Bueche Ludwig-Maximilians-Universität München Luisenstr. 37 80333 München

DOI:

https://doi.org/10.12854/erde-147-24

Keywords:

Lake mixing, mixing depth, Lake Ammersee, physical limnology, dimictic

Abstract

Climate change affects the circulation of lakes and has already induced mixing regime shifts for 9 several sites. The pre-alpine Lake Ammersee, Germany, is usually dimictic, but exhibits rarely a 10 complete ice cover. Furthermore, it has potentially shown some monomictic years in the past. Based 11 on vertical profile data of water temperatures (WT) and dissolved oxygen (DO) the mixing behavior 12 of the lake is visualized and analyzed for the period of 1986 – 2014. The classification of mixing 13 depicts 22 dimictic years and eight monomictic years, which approves the assumption of of 14 occasional monomixis in the lake. No significance of a trend of shift in mixing pattern can be found. 15 By also deriving also the mixing depths from the vertical DO distribution, one year without complete 16 overturn (meromictic) is detected. The results show that no regime shift has set in for Lake 17 Ammersee until 2014. Considering the high percentage of monomictic years and the potential 18 occurrence of meromixis, it can be assumed that the lake’s mixing pattern will alter due to predicted 19 climate change in the future.

References

Adrian R, O'Reilly CM, Zagarese H, Baines SB, Hessen DO, Keller W, Livingstone DM, Sommaruga R, Straile D, Van Donk E, Weyhenmeyer GA, Winder M 2009: Lakes as sentinels of climate change. – Limnology and Oceanography 54 (6): 2283-2297. doi: 10.4319/lo.2009.54.6_part_2.2283

Alefs J, Muller J 1999: Differences in the eutrophication dynamics of Ammersee and Starnberger See (Southern Germany), reflected by the diatom succession in varve-dated sediments. – Journal of Paleolimnology 21 (4): 395-407

Ambrosetti W, Barbanti L 2005: Evolution towards meromixis of Lake Iseo (Northern Italy) as revealed by its stability trend. – Journal of Limnology 64 (1): 1-11

Boehrer B, Schultze M 2008: Stratification of lakes. – Reviews of Geophysics 46 (2): RG2005. doi: 10.1029/2006rg000210

Bueche T, Vetter M 2014: Influence of groundwater inflow on water temperature simulations of Lake Ammersee using a one-dimensional hydrodynamic lake model. – Erdkunde 68 (1): 19-31. doi: 10.3112/erdkunde.2014.01.03

Bueche T, Vetter M 2015: Future alterations of thermal characteristics in a medium-sized lake simulated by coupling a regional climate model with a lake model. – Climate Dynamics 44 (1-2): 371-384. doi: 10.1007/s00382-014-2259-5

Butcher J, Nover D, Johnson T, Clark C 2015: Sensitivity of lake thermal and mixing dynamics to climate change. – Climatic Change 129 (1-2): 295-305. doi: 10.1007/s10584-015-1326-1

Danis P-A, von Grafenstein U, Masson-Delmotte V, Planton S, Gerdeaux D, Moisselin JM 2004: Vulnerability of two European lakes in response to future climatic changes. – Geophysical Research Letters 31 (21): L21507. doi: 10.1029/2004gl020833

Dokulil MT 2016: Climate impacts on ecohydrological processes in aquatic systems. – Ecohydrology & Hydrobiology 16 (1): 66-70. doi: 10.1016/j.ecohyd.2015.08.001

Ernst B, Hoeger SJ, O’Brien E, Dietrich DR 2009: Abundance and toxicity of Planktothrix rubescens in the pre-alpine Lake Ammersee, Germany. – Harmful Algae 8 (2): 329-342. doi: 10.1016/j.hal.2008.07.006

Hennemuth B, Bender S, Bülow K, Dreier N, Keup-Thiel E, Krüger O, Mudersbach C, Radermacher C, Schoetter R 2013: Statistical Methods for the Analysis of Simulated and Observed Climate Data: Applied in Projects and Institutions Dealing with Climate Change Impact and Adaption. CSC Report 13. Climate Service Center, Germany,

Hetherington AL, Schneider RL, Rudstam LG, Gal G, DeGaetano AT, Walter MT 2015: Modeling climate change impacts on the thermal dynamics of polymictic Oneida Lake, New York, United States. – Ecological Modelling 300 1-11. doi: 10.1016/j.ecolmodel.2014.12.018

Hofmann H, Peeters F 2013: In-situ optical and acoustical measurements of the buoyant cyanobacterium P. rubescens: spatial and temporal distribution patterns. – PLoS One 8 (11): e80913. doi: 10.1371/journal.pone.0080913

Holzner CP, Aeschbach-Hertig W, Simona M, Veronesi M, Imboden DM, Kipfer R 2009: Exceptional mixing events in meromictic Lake Lugano (Switzerland/Italy), studied using environmental tracers. – Limnology and Oceanography 54 (4): 1113-1124

Hupfer M, Nixdorf B 2011: Zustand und Entwicklung von Seen in Berlin und Brandenburg - Condition and changes of lakes in Berlin and Brandenburg. – Materialien der Interdiziplinären Arbeitsgruppen 11

Ito Y, Momii K 2015: Impacts of regional warming on long-term hypolimnetic anoxia and dissolved oxygen concentration in a deep lake. – Hydrological Processes 29 (9): 2232-2242. doi: 10.1002/hyp.10362

Joehnk KD, Umlauf L 2001: Modelling the metalimnetic oxygen minimum in a medium sized alpine lake. – Ecological Modelling 136 (1): 67-80. doi: 10.1016/s0304-3800(00)00381-1

Kerimoglu O, Rinke K 2013: Stratification dynamics in a shallow reservoir under different hydro-meteorological scenarios and operational strategies. – Water Resources Research 49 (11): 7518-7527. doi: 10.1002/2013WR013520

Kucklentz V, Hamm A, Joehnk KD, Chang T-P, Morscheid H, Roth D, Schmidt-Halewicz S, Morschied H, Mayr C 2001: Antwort bayerischer Voralpenseen auf verringerte Nährstoffzufuhr. – Informationsberichte Bayerisches Landesamt für Wasserwirtschaft 101 1-272

Lenhart B 1987: Limnologische Studien am Ammersee 1984-1986. – Informationsberichte Bayerisches Landesamt für Wasserwirtschaft 87 (2): 1-112

Livingstone DM 2003: Impact of secular climate change on the thermal structure of a large temperate central European lake. – Climatic Change 57 (1-2): 205-225

Modiri-Gharehveran M, Etemad-Shahidi A, Jabbari E 2014: Effects of climate change on the thermal regime of a reservoir. – Proceedings of the ICE-Water Management 167 (10): 601-611

Nixdorf B, Hemm M, Hoffman A, Richter P 2004: Dokumentation von Zustand und Entwicklung der wichtigsten Seen Deutschlands. Umweltbundesamt. – Berlin

Peeters F, Livingstone DM, Goudsmit GH, Kipfer R, Forster R 2002: Modeling 50 years of historical temperature profiles in a large central European lake. – Limnology and Oceanography 47 (1): 186-197

Rempfer J, Livingstone DM, Blodau C, Forster R, Niederhauser P, Kipfer R 2010: The effect of the exceptionally mild European winter of 2006-2007 on temperature and oxygen profiles in lakes in Switzerland: A foretaste of the future? – Limnology and Oceanography 55 (5): 2170-2180. doi: 10.4319/lo.2010.55.5.2170

Salmi T, Määttä A, Anttila P, Ruoho-Airola T, Amnell T 2002: Detecting trends of annual values of atmospheric pollutants by the Mann-Kendall test and Sen's slope estimates - The EXCEL template application MAKESENS. – Publications on Air Quality 13

Schwoerbel J, Brendelberger H 2005: Einführung in die Limnologie. Spektrum Akademischer Verlag. – München

Straile D, Jöhnk K, Rossknecht H 2003: Complex effects of winter warming on the physicochemical characteristics of a deep lake. – Limnology and Oceanography 48 (4): 1432-1438

Vetter M, Sousa A 2012: Past and current trophic development in Lake Ammersee - Alterations in a normal range or possible signals of climate change? – Fund Appl Limnol 180 (1): 41-57. doi: 10.1127/1863-9135/2012/0123

Von Grafenstein U, Erlenkeuser H, Kleinmann A, Müller J, Trimborn P 1994: High-frequency climatic oscillations during the last deglaciation as revealed by oxygen-isotope records of benthic organisms (Ammersee, southern Germany). – Journal of Paleolimnology 11 (3): 349-357

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Published

2016-12-30

How to Cite

Bueche, T. (2016). The mixing regime of Lake Ammersee. DIE ERDE – Journal of the Geographical Society of Berlin, 147(4), 275–283. https://doi.org/10.12854/erde-147-24

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Section

Short communications