Articles | Volume 16, issue 10
https://doi.org/10.5194/bg-16-2095-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-16-2095-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
20 May 2019
Research article |
| 20 May 2019
| 20 May 2019
Ostracods as ecological and isotopic indicators of lake water salinity changes: the Lake Van example
Jeremy McCormack
CORRESPONDING AUTHOR
Institute for Geology, Mineralogy & Geophysics, Ruhr University Bochum,
Universitätsstraße 150, 44801 Bochum, Germany
Finn Viehberg
Institute for Geology and Mineralogy, University of Cologne,
Zülpicher Straße 49A, 50674 Köln, Germany
Institute for Geography und Geology, University of Greifswald,
Friedrich-Ludwig-Jahn Str. 16, 17487 Greifswald, Germany
Derya Akdemir
Institute for Geology and Mineralogy, University of Cologne,
Zülpicher Straße 49A, 50674 Köln, Germany
Adrian Immenhauser
Institute for Geology, Mineralogy & Geophysics, Ruhr University Bochum,
Universitätsstraße 150, 44801 Bochum, Germany
Ola Kwiecien
Institute for Geology, Mineralogy & Geophysics, Ruhr University Bochum,
Universitätsstraße 150, 44801 Bochum, Germany
Related authors
No articles found.
Onyedika Anthony Igbokwe, Jithender J. Timothy, Ashwani Kumar, Xiao Yan, Mathias Mueller, Alessandro Verdecchia, Günther Meschke, and Adrian Immenhauser
EGUsphere, https://doi.org/10.31223/X53D27, https://doi.org/10.31223/X53D27, 2023
Short summary
Short summary
We present a workflow that models the impact of stress regime change on the Latemar carbonate buildup using displacement-based linear elastic FEM and outcrop analysis. Stress-dependent heterogeneous apertures and effective permeability were calculated from boundary conditions constrained by the study area's stress directions. Our results show that simulated far-field stresses at NW-SE subsidence deformation and N-S Alpine deformation increased the overall fracture aperture and permeability.
Julia Homann, Niklas Karbach, Stacy A. Carolin, Daniel H. James, David Hodell, Sebastian F. M. Breitenbach, Ola Kwiecien, Mark Brenner, Carlos Peraza Lope, and Thorsten Hoffmann
Biogeosciences, 20, 3249–3260, https://doi.org/10.5194/bg-20-3249-2023, https://doi.org/10.5194/bg-20-3249-2023, 2023
Short summary
Short summary
Cave stalagmites contain substances that can be used to reconstruct past changes in local and regional environmental conditions. We used two classes of biomarkers (polycyclic aromatic hydrocarbons and monosaccharide anhydrides) to detect the presence of fire and to also explore changes in fire regime (e.g. fire frequency, intensity, and fuel source). We tested our new method on a stalagmite from Mayapan, a large Maya city on the Yucatán Peninsula.
Cinthya Esther Nava Fernandez, Tobias Braun, Bethany Fox, Adam Hartland, Ola Kwiecien, Chelsea Pederson, Sebastian Hoepker, Stefano Bernasconi, Madalina Jaggi, John Hellstrom, Fernando Gázquez, Amanda French, Norbert Marwan, Adrian Immenhauser, and Sebastian Franz Martin Breitenbach
Clim. Past Discuss., https://doi.org/10.5194/cp-2021-172, https://doi.org/10.5194/cp-2021-172, 2022
Manuscript not accepted for further review
Short summary
Short summary
We provide a ca. 1000 year long (6.4–5.4 ka BP) stalagmite-based reconstruction of mid-Holocene rainfall variability in the tropical western Pacific. The annually laminated multi-proxy (δ13C, δ18O, X/Ca, gray values) record comes from Niue island and informs on El Nino-Southern Oscillation and South Pacific Convergence Zone dynamics. Our data suggest that ENSO was active and influenced rainfall seasonality over the covered time interval. Rainfall seasonality was subdued during active ENSO phases
Cinthya Nava-Fernandez, Adam Hartland, Fernando Gázquez, Ola Kwiecien, Norbert Marwan, Bethany Fox, John Hellstrom, Andrew Pearson, Brittany Ward, Amanda French, David A. Hodell, Adrian Immenhauser, and Sebastian F. M. Breitenbach
Hydrol. Earth Syst. Sci., 24, 3361–3380, https://doi.org/10.5194/hess-24-3361-2020, https://doi.org/10.5194/hess-24-3361-2020, 2020
Short summary
Short summary
Speleothems are powerful archives of past climate for understanding modern local hydrology and its relation to regional circulation patterns. We use a 3-year monitoring dataset to test the sensitivity of Waipuna Cave to seasonal changes and El Niño–Southern Oscillation (ENSO) dynamics. Drip water data suggest a fast response to rainfall events; its elemental composition reflects a seasonal cycle and ENSO variability. Waipuna Cave speleothems have a high potential for past ENSO reconstructions.
Alexander Hueter, Stefan Huck, Stéphane Bodin, Ulrich Heimhofer, Stefan Weyer, Klaus P. Jochum, and Adrian Immenhauser
Clim. Past, 15, 1327–1344, https://doi.org/10.5194/cp-15-1327-2019, https://doi.org/10.5194/cp-15-1327-2019, 2019
Short summary
Short summary
In this multi-proxy study we present and critically discuss the hypothesis that during the early Aptian, platform-top hypoxia temporarily established in some of the vast epeiric seas of the central Tethys and triggered significant changes in reefal ecosystems. Data shown here shed light on the driving mechanisms that control poorly understood faunal patterns during OAE 1a in the neritic realm and provide evidence on the intricate relation between basinal and platform-top water masses.
Laura A. Casella, Erika Griesshaber, Xiaofei Yin, Andreas Ziegler, Vasileios Mavromatis, Dirk Müller, Ann-Christine Ritter, Dorothee Hippler, Elizabeth M. Harper, Martin Dietzel, Adrian Immenhauser, Bernd R. Schöne, Lucia Angiolini, and Wolfgang W. Schmahl
Biogeosciences, 14, 1461–1492, https://doi.org/10.5194/bg-14-1461-2017, https://doi.org/10.5194/bg-14-1461-2017, 2017
Short summary
Short summary
Mollusc shells record past environments. Fossil shell chemistry and microstructure change as metastable biogenic aragonite transforms to stable geogenic calcite. We simulated this alteration of Arctica islandica shells by hydrothermal treatments. Below 175 °C the shell aragonite survived for weeks. At 175 °C the replacement of the original material starts after 4 days and yields submillimetre-sized calcites preserving the macroscopic morphology as well as the original internal micromorphology.
N. Pickarski, O. Kwiecien, D. Langgut, and T. Litt
Clim. Past, 11, 1491–1505, https://doi.org/10.5194/cp-11-1491-2015, https://doi.org/10.5194/cp-11-1491-2015, 2015
Related subject area
Biogeochemistry: Limnology
Thermal stratification and meromixis in four dilute temperate zone lakes
Mercury records covering the past 90 000 years from lakes Prespa and Ohrid, SE Europe
Temporary stratification promotes large greenhouse gas emissions in a shallow eutrophic lake
The influence of carbon cycling on oxygen depletion in north-temperate lakes
Conceptual models of dissolved carbon fluxes in a two-layer stratified lake: interannual typhoon responses under extreme climates
Soil-biodegradable plastic films do not decompose in a lake sediment over 9 months of incubation
Anthropogenic activities significantly increase annual greenhouse gas (GHG) fluxes from temperate headwater streams in Germany
Role of formation and decay of seston organic matter in the fate of methylmercury within the water column of a eutrophic lake
Contrasting activation energies of litter-associated respiration and P uptake drive lower cumulative P uptake at higher temperatures
Rapidly increasing sulfate concentration: a hidden promoter of eutrophication in shallow lakes
The dominant role of sunlight in degrading winter dissolved organic matter from a thermokarst lake in a subarctic peatland
Dissolved organic matter signatures in urban surface waters: spatio-temporal patterns and drivers
Towards a history of Holocene P dynamics for the Northern Hemisphere using lake sediment geochemical records
Methane in the Danube Delta: the importance of spatial patterns and diel cycles for atmospheric emission estimates
Methane oxidation in the waters of a humic-rich boreal lake stimulated by photosynthesis, nitrite, Fe(III) and humics
Porewater δ13CDOC indicates variable extent of degradation in different talik layers of coastal Alaskan thermokarst lakes
Holocene phototrophic community and anoxia dynamics in meromictic Lake Jaczno (NE Poland) using high-resolution hyperspectral imaging and HPLC data
Changing sources and processes sustaining surface CO2 and CH4 fluxes along a tropical river to reservoir system
The relative importance of photodegradation and biodegradation of terrestrially derived dissolved organic carbon across four lakes of differing trophic status
The influences of historic lake trophy and mixing regime changes on long-term phosphorus fraction retention in sediments of deep eutrophic lakes: a case study from Lake Burgäschi, Switzerland
Ice formation on lake surfaces in winter causes warm-season bias of lacustrine brGDGT temperature estimates
Drivers of diffusive CH4 emissions from shallow subarctic lakes on daily to multi-year timescales
High organic carbon burial but high potential for methane ebullition in the sediments of an Amazonian hydroelectric reservoir
Direct O2 control on the partitioning between denitrification and dissimilatory nitrate reduction to ammonium in lake sediments
Spatial distribution of environmental indicators in surface sediments of Lake Bolshoe Toko, Yakutia, Russia
Reviews and syntheses: Dams, water quality and tropical reservoir stratification
Nitrogen cycling in Sandusky Bay, Lake Erie: oscillations between strong and weak export and implications for harmful algal blooms
Distinctive effects of allochthonous and autochthonous organic matter on CDOM spectra in a tropical lake
High-frequency productivity estimates for a lake from free-water CO2 concentration measurements
Nitrification and ammonium dynamics in Taihu Lake, China: seasonal competition for ammonium between nitrifiers and cyanobacteria
Quality transformation of dissolved organic carbon during water transit through lakes: contrasting controls by photochemical and biological processes
Continuous measurement of air–water gas exchange by underwater eddy covariance
Capturing temporal and spatial variability in the chemistry of shallow permafrost ponds
Organic carbon mass accumulation rate regulates the flux of reduced substances from the sediments of deep lakes
Cyanobacterial carbon concentrating mechanisms facilitate sustained CO2 depletion in eutrophic lakes
New insights on resource stoichiometry: assessing availability of carbon, nitrogen, and phosphorus to bacterioplankton
Spatio-seasonal variability of chromophoric dissolved organic matter absorption and responses to photobleaching in a large shallow temperate lake
Isotopic composition of nitrate and particulate organic matter in a pristine dam reservoir of western India: implications for biogeochemical processes
Bacterial production in subarctic peatland lakes enriched by thawing permafrost
Photochemical mineralisation in a boreal brown water lake: considerable temporal variability and minor contribution to carbon dioxide production
Are flood-driven turbidity currents hot spots for priming effect in lakes?
Organic carbon burial efficiency in a subtropical hydroelectric reservoir
Importance of within-lake processes in affecting the dynamics of dissolved organic carbon and dissolved organic and inorganic nitrogen in an Adirondack forested lake/watershed
Temperature dependence of the relationship between pCO2 and dissolved organic carbon in lakes
The nature of organic carbon in density-fractionated sediments in the Sacramento-San Joaquin River Delta (California)
Microbial nutrient limitation in Arctic lakes in a permafrost landscape of southwest Greenland
Phototrophic pigment diversity and picophytoplankton in permafrost thaw lakes
Carbon dynamics in highly heterotrophic subarctic thaw ponds
Impact of forest harvesting on water quality and fluorescence characteristics of dissolved organic matter in eastern Canadian Boreal Shield lakes in summer
Spatial distribution and sources of organic carbon in the surface sediment of Bosten Lake, China
Elizabeth D. Swanner, Chris Harding, Sajjad A. Akam, Ioan Lascu, Gabrielle Ledesma, Pratik Poudel, Heeyeon Sun, Samuel Duncanson, Karly Bandy, Alex Branham, Liza Bryant-Tapper, Tanner Conwell, Omri Jamison, and Lauren Netz
Biogeosciences, 21, 1549–1562, https://doi.org/10.5194/bg-21-1549-2024, https://doi.org/10.5194/bg-21-1549-2024, 2024
Short summary
Short summary
Four lakes were thought to be permanently stratified. Years’ worth of data indicate only one lake is permanently stratified. Strong temperature gradients keep it stratified – unusual for a lake in a temperate climate. The lake has elevated oxygen concentrations within the temperature gradient. Rapid development of the gradient in the spring traps oxygen, and oxygen production by photosynthetic organisms during the summer adds more.
Alice R. Paine, Isabel M. Fendley, Joost Frieling, Tamsin A. Mather, Jack H. Lacey, Bernd Wagner, Stuart A. Robinson, David M. Pyle, Alexander Francke, Theodore R. Them II, and Konstantinos Panagiotopoulos
Biogeosciences, 21, 531–556, https://doi.org/10.5194/bg-21-531-2024, https://doi.org/10.5194/bg-21-531-2024, 2024
Short summary
Short summary
Many important processes within the global mercury (Hg) cycle operate over thousands of years. Here, we explore the timing, magnitude, and expression of Hg signals retained in sediments of lakes Prespa and Ohrid over the past ∼90 000 years. Divergent signals suggest that local differences in sediment composition, lake structure, and water balance influence the local Hg cycle and determine the extent to which sedimentary Hg signals reflect local- or global-scale environmental changes.
Thomas A. Davidson, Martin Søndergaard, Joachim Audet, Eti Levi, Chiara Esposito, Tuba Bucak, and Anders Nielsen
Biogeosciences, 21, 93–107, https://doi.org/10.5194/bg-21-93-2024, https://doi.org/10.5194/bg-21-93-2024, 2024
Short summary
Short summary
Shallow lakes and ponds undergo frequent stratification in summer months. Here we studied how this affects greenhouse gas (GHG) emissions. We found that stratification caused anoxia in the bottom waters, driving increased GHG emissions, in particular methane released as bubbles. In addition, methane and carbon dioxide accumulated in the bottom waters during stratification, leading to large emissions when the lake mixed again.
Austin Delany, Robert Ladwig, Cal Buelo, Ellen Albright, and Paul C. Hanson
Biogeosciences, 20, 5211–5228, https://doi.org/10.5194/bg-20-5211-2023, https://doi.org/10.5194/bg-20-5211-2023, 2023
Short summary
Short summary
Internal and external sources of organic carbon (OC) in lakes can contribute to oxygen depletion, but their relative contributions remain in question. To study this, we built a two-layer model to recreate processes relevant to carbon for six Wisconsin lakes. We found that internal OC was more important than external OC in depleting oxygen. This shows that it is important to consider both the fast-paced cycling of internally produced OC and the slower cycling of external OC when studying lakes.
Hao-Chi Lin, Keisuke Nakayama, Jeng-Wei Tsai, and Chih-Yu Chiu
Biogeosciences, 20, 4359–4376, https://doi.org/10.5194/bg-20-4359-2023, https://doi.org/10.5194/bg-20-4359-2023, 2023
Short summary
Short summary
We successfully developed conceptual models to examine how dissolved carbon distributions change with climate within a small subtropical lake, considering both physical and biochemical processes. Typhoons controlled the seasonal and interannual variation in C fluxes due to large amounts of carbon loading and rapid mixing within the whole lake, resulting in the net primary production being 3.14 times higher in typhoon years than in non-typhoon years in Yuan‒Yang Lake.
Sigrid van Grinsven and Carsten Schubert
Biogeosciences, 20, 4213–4220, https://doi.org/10.5194/bg-20-4213-2023, https://doi.org/10.5194/bg-20-4213-2023, 2023
Short summary
Short summary
Agriculture relies heavily on plastic mulch films, which may be transported to aquatic environments. We investigated the breakdown of soil-biodegradable agricultural mulch films in lake sediments. After 40 weeks, films were intact, and no significant CO2 or CH4 was produced from the biodegradable mulch films. We conclude that the mulch films we used have a low biodegradability in lake sediments. The sediment lacks the microbes needed to break down the biodegradable plastics that were used here.
Ricky Mwangada Mwanake, Gretchen Maria Gettel, Elizabeth Gachibu Wangari, Clarissa Glaser, Tobias Houska, Lutz Breuer, Klaus Butterbach-Bahl, and Ralf Kiese
Biogeosciences, 20, 3395–3422, https://doi.org/10.5194/bg-20-3395-2023, https://doi.org/10.5194/bg-20-3395-2023, 2023
Short summary
Short summary
Despite occupying <1 %; of the globe, streams are significant sources of greenhouse gas (GHG) emissions. In this study, we determined anthropogenic effects on GHG emissions from streams. We found that anthropogenic-influenced streams had up to 20 times more annual GHG emissions than natural ones and were also responsible for seasonal peaks. Anthropogenic influences also altered declining GHG flux trends with stream size, with potential impacts on stream-size-based spatial upscaling techniques.
Laura Balzer, Carluvy Baptista-Salazar, Sofi Jonsson, and Harald Biester
Biogeosciences, 20, 1459–1472, https://doi.org/10.5194/bg-20-1459-2023, https://doi.org/10.5194/bg-20-1459-2023, 2023
Short summary
Short summary
Toxic methylmercury (MeHg) in lakes can be enriched in fish and is harmful for humans. Phytoplankton is the entry point for MeHg into the aquatic food chain. We investigated seasonal MeHg concentrations in plankton of a productive lake. Our results show that high amounts of MeHg occur in algae and suspended matter in lakes and that productive lakes are hot spots of MeHg formation, which is mainly controlled by decomposition of algae organic matter and water-phase redox conditions.
Nathan J. Tomczyk, Amy D. Rosemond, Anna Kaz, and Jonathan P. Benstead
Biogeosciences, 20, 191–204, https://doi.org/10.5194/bg-20-191-2023, https://doi.org/10.5194/bg-20-191-2023, 2023
Short summary
Short summary
Warming is expected to increase rates of microbial metabolism, but the effect of warming on nutrient demand is unclear. Our experiments demonstrate that microbial nutrient uptake increases less with temperature than metabolism, particularly when environmental nutrient concentrations are low. However, our simulation models suggest that warming may actually lead to declines in ecosystem-scale nutrient uptake as warming accelerates the depletion of carbon substrates required for microbial growth.
Chuanqiao Zhou, Yu Peng, Li Chen, Miaotong Yu, Muchun Zhou, Runze Xu, Lanqing Zhang, Siyuan Zhang, Xiaoguang Xu, Limin Zhang, and Guoxiang Wang
Biogeosciences, 19, 4351–4360, https://doi.org/10.5194/bg-19-4351-2022, https://doi.org/10.5194/bg-19-4351-2022, 2022
Short summary
Short summary
The dramatical increase in SO42- concentration up to 100 mg L-1 in eutrophic lakes has aroused great attention. It enhanced the sulfate reduction to release a large amount of ΣS2- during cyanobacteria decomposition. The Fe2+ released from the iron reduction process is captured by ΣS2-, and finally the combination of iron and P was reduced, promoting the release of endogenous P. Therefore, increasing sulfate concentrations are shown to be a hidden promoter of eutrophication in shallow lakes.
Flora Mazoyer, Isabelle Laurion, and Milla Rautio
Biogeosciences, 19, 3959–3977, https://doi.org/10.5194/bg-19-3959-2022, https://doi.org/10.5194/bg-19-3959-2022, 2022
Short summary
Short summary
Dissolved organic matter collected at the end of winter from a peatland thermokarst lake was highly transformed and degraded by sunlight, leading to bacterial stimulation and CO2 production, but a fraction was also potentially lost by photoflocculation. Over 18 days, 18 % of the incubated dissolved organic matter was lost under sunlight, while dark bacterial degradation was negligible. Sunlight could have a marked effect on carbon cycling in organic-rich thermokarst lakes after ice-off.
Clara Romero González-Quijano, Sonia Herrero Ortega, Peter Casper, Mark O. Gessner, and Gabriel A. Singer
Biogeosciences, 19, 2841–2853, https://doi.org/10.5194/bg-19-2841-2022, https://doi.org/10.5194/bg-19-2841-2022, 2022
Short summary
Short summary
Despite today's diversity of methods to measure dissolved organic matter (DOM), its potential to give ecological information about urban surface waters has been underused. We found DOM from urban lakes and ponds to differ greatly from that of urban streams and rivers in composition as well as temporal turnover. Urban land use (the percentage of green space), nutrient supply and point source pollution were the principal drivers of DOM. We suggest including DOM composition in regular monitoring.
Madeleine Moyle, John F. Boyle, and Richard C. Chiverrell
Biogeosciences, 18, 5609–5638, https://doi.org/10.5194/bg-18-5609-2021, https://doi.org/10.5194/bg-18-5609-2021, 2021
Short summary
Short summary
We reconstruct Holocene landscape P yield and lake water TP concentration for 24 sites across the Northern Hemisphere by applying a process model to published lake sediment geochemical records. We find sites with the same landscape development history show similar geochemical profiles depending on climate, human impact, and other local factors. Our reconstructions can be used to understand present-day terrestrial P cycling, lake water nutrient status, and export of terrestrial P to the oceans.
Anna Canning, Bernhard Wehrli, and Arne Körtzinger
Biogeosciences, 18, 3961–3979, https://doi.org/10.5194/bg-18-3961-2021, https://doi.org/10.5194/bg-18-3961-2021, 2021
Short summary
Short summary
Inland waters are usually not well restrained in terms of greenhouse gas measurements. One of these regions is the Danube Delta, Romania. Therefore, we measured continuously with sensors to collect high-resolution data for CH4 and O2 throughout the Delta. We found significant variation for all concentrations over the day and night and between regions, as well as large spatial variation throughout all regions, with large CH4 concentrations flowing in from the reed beds to the lakes.
Sigrid van Grinsven, Kirsten Oswald, Bernhard Wehrli, Corinne Jegge, Jakob Zopfi, Moritz F. Lehmann, and Carsten J. Schubert
Biogeosciences, 18, 3087–3101, https://doi.org/10.5194/bg-18-3087-2021, https://doi.org/10.5194/bg-18-3087-2021, 2021
Short summary
Short summary
Lake Lovojärvi is a nutrient-rich lake with high amounts of methane at the bottom, but little near the top. Methane comes from the sediment and rises up through the water but is consumed by microorganisms along the way. They use oxygen if available, but in deeper water layers, no oxygen was present. There, nitrite, iron and humic substances were used, besides a collaboration between photosynthetic organisms and methane consumers, in which the first produced oxygen for the latter.
Ove H. Meisel, Joshua F. Dean, Jorien E. Vonk, Lukas Wacker, Gert-Jan Reichart, and Han Dolman
Biogeosciences, 18, 2241–2258, https://doi.org/10.5194/bg-18-2241-2021, https://doi.org/10.5194/bg-18-2241-2021, 2021
Short summary
Short summary
Arctic permafrost lakes form thaw bulbs of unfrozen soil (taliks) beneath them where carbon degradation and greenhouse gas production are increased. We analyzed the stable carbon isotopes of Alaskan talik sediments and their porewater dissolved organic carbon and found that the top layers of these taliks are likely more actively degraded than the deeper layers. This in turn implies that these top layers are likely also more potent greenhouse gas producers than the underlying deeper layers.
Stamatina Makri, Andrea Lami, Luyao Tu, Wojciech Tylmann, Hendrik Vogel, and Martin Grosjean
Biogeosciences, 18, 1839–1856, https://doi.org/10.5194/bg-18-1839-2021, https://doi.org/10.5194/bg-18-1839-2021, 2021
Short summary
Short summary
Anoxia in lakes is a major growing concern. In this study we applied a multiproxy approach combining high-resolution hyperspectral imaging (HSI) pigment data with specific HPLC data to examine the Holocene evolution and main drivers of lake anoxia and trophic state changes. We find that when human impact was low, these changes were driven by climate and natural lake-catchment evolution. In the last 500 years, increasing human impact has promoted lake eutrophication and permanent anoxia.
Cynthia Soued and Yves T. Prairie
Biogeosciences, 18, 1333–1350, https://doi.org/10.5194/bg-18-1333-2021, https://doi.org/10.5194/bg-18-1333-2021, 2021
Short summary
Short summary
Freshwater reservoirs emit greenhouse gases (GHGs, CO2 and CH4) to the atmosphere; however, the sources underlying these emissions are numerous, and their magnitude is not well known. This study quantifies surface CO2 and CH4 emissions and all their potential sources in a tropical reservoir. Results highlight the changes in GHG sources along the river–reservoir continuum, with internal metabolism being a key component but highly uncertain and challenging to estimate at an ecosystem scale.
Christopher M. Dempsey, Jennifer A. Brentrup, Sarah Magyan, Lesley B. Knoll, Hilary M. Swain, Evelyn E. Gaiser, Donald P. Morris, Michael T. Ganger, and Craig E. Williamson
Biogeosciences, 17, 6327–6340, https://doi.org/10.5194/bg-17-6327-2020, https://doi.org/10.5194/bg-17-6327-2020, 2020
Short summary
Short summary
We looked at how terrestrial dissolved organic carbon (DOC) from the watersheds of four different lakes responded to both biodegradation (i.e., microbes) and photodegradation (i.e., sunlight). The traditional paradigm is that biodegradation is more important than photodegradation. Our research shows that, on short timescales (i.e., 7 d), sunlight is more important than microbes in degrading DOC. Interestingly, the lakes had different responses to sunlight based on their trophic status.
Luyao Tu, Paul Zander, Sönke Szidat, Ronald Lloren, and Martin Grosjean
Biogeosciences, 17, 2715–2729, https://doi.org/10.5194/bg-17-2715-2020, https://doi.org/10.5194/bg-17-2715-2020, 2020
Short summary
Short summary
In a small, deep lake on the Swiss Plateau, net fluxes of labile P fractions in sediments that can be released to surface waters have been predominately controlled by past hypolimnetic anoxic conditions since the early 1900s. More than 40 years of hypolimnetic withdrawal can effectively reduce net P fluxes in sediments and internal P loads but not effectively decrease eutrophication. These findings should likely serve the management of deep eutrophic lakes in temperate zones.
Jiantao Cao, Zhiguo Rao, Fuxi Shi, and Guodong Jia
Biogeosciences, 17, 2521–2536, https://doi.org/10.5194/bg-17-2521-2020, https://doi.org/10.5194/bg-17-2521-2020, 2020
Short summary
Short summary
BrGDGT distribution in Gonghai Lake is different from surrounding soils, and its derived temperature reflects a mean annual lake water temperature (LWT) that is higher than the mean annual air temperature (AT). The higher mean annual LWT is due to ice formation in winter that prevents thermal exchange between lake water and air.
Joachim Jansen, Brett F. Thornton, Alicia Cortés, Jo Snöälv, Martin Wik, Sally MacIntyre, and Patrick M. Crill
Biogeosciences, 17, 1911–1932, https://doi.org/10.5194/bg-17-1911-2020, https://doi.org/10.5194/bg-17-1911-2020, 2020
Short summary
Short summary
Lakes are important emitters of the greenhouse gas methane. We use field observations and a model to evaluate the importance of known drivers of methane production and release. Fast and slow changes of the diffusive flux were governed by wind speed and sediment temperature, respectively. Increased turbulence enhanced release, but storms depleted the lakes of gas and limited emissions. Our findings may inform model studies on the effects of weather and climate change on lake methane emissions.
Gabrielle R. Quadra, Sebastian Sobek, José R. Paranaíba, Anastasija Isidorova, Fábio Roland, Roseilson do Vale, and Raquel Mendonça
Biogeosciences, 17, 1495–1505, https://doi.org/10.5194/bg-17-1495-2020, https://doi.org/10.5194/bg-17-1495-2020, 2020
Short summary
Short summary
Hydropower is expanding in the Amazon Basin, but the potential effects of river damming on carbon fluxes cannot be gauged due to a lack of studies. We quantified, for the first time in an Amazonian reservoir, both organic carbon burial and the concentrations of methane in the sediments. We found that the dual role of sediments as both a carbon sink and methane source may be particularly pronounced in this Amazonian reservoir.
Adeline N. Y. Cojean, Jakob Zopfi, Alan Gerster, Claudia Frey, Fabio Lepori, and Moritz F. Lehmann
Biogeosciences, 16, 4705–4718, https://doi.org/10.5194/bg-16-4705-2019, https://doi.org/10.5194/bg-16-4705-2019, 2019
Short summary
Short summary
Our results demonstrate the importance of oxygen in regulating the fate of nitrogen (N) in the sediments of Lake Lugano south basin, Switzerland. Hence, our study suggests that, by changing oxygen concentration in bottom waters, the seasonal water column turnover may significantly regulate the partitioning between N removal and N recycling in surface sediments, and it is likely that a similar pattern can be expected in a wide range of environments.
Boris K. Biskaborn, Larisa Nazarova, Lyudmila A. Pestryakova, Liudmila Syrykh, Kim Funck, Hanno Meyer, Bernhard Chapligin, Stuart Vyse, Ruslan Gorodnichev, Evgenii Zakharov, Rong Wang, Georg Schwamborn, Hannah L. Bailey, and Bernhard Diekmann
Biogeosciences, 16, 4023–4049, https://doi.org/10.5194/bg-16-4023-2019, https://doi.org/10.5194/bg-16-4023-2019, 2019
Short summary
Short summary
To better understand time-series data in lake sediment cores in times of rapidly changing climate, we study within-lake spatial variabilities of environmental indicator data in 38 sediment surface samples along spatial habitat gradients in the boreal deep Lake Bolshoe Toko (Russia). Our methods comprise physicochemical as well as diatom and chironomid analyses. Species diversities vary according to benthic niches, while abiotic proxies depend on river input, water depth, and catchment lithology.
Robert Scott Winton, Elisa Calamita, and Bernhard Wehrli
Biogeosciences, 16, 1657–1671, https://doi.org/10.5194/bg-16-1657-2019, https://doi.org/10.5194/bg-16-1657-2019, 2019
Short summary
Short summary
A global boom in dam construction throughout the world’s tropics motivated us to review and synthesize information on the water quality impacts of dams with a focus on low-latitude contexts and scope for mitigation. Sediment trapping and reservoir stratification are key process driving chemical and ecological impacts on tropical rivers. We analyze the 54 most-voluminous low-latitude reservoirs and find that stratification seems to be a ubiquitous phenomenon.
Kateri R. Salk, George S. Bullerjahn, Robert Michael L. McKay, Justin D. Chaffin, and Nathaniel E. Ostrom
Biogeosciences, 15, 2891–2907, https://doi.org/10.5194/bg-15-2891-2018, https://doi.org/10.5194/bg-15-2891-2018, 2018
Short summary
Short summary
This paper highlights dynamic nitrogen cycling in a freshwater estuary, with implications for harmful algal blooms and downstream nitrogen loading. Phytoplankton and microbes actively consumed nitrogen in this system, contributing to recycling of nitrogen within the system and permanent nitrogen removal, respectively. However, delivery of nitrogen from the river and fixation of atmospheric nitrogen by phytoplankton outweighed nitrogen uptake, resulting in variable downstream nitrogen delivery.
Luciana Pena Mello Brandão, Ludmila Silva Brighenti, Peter Anton Staehr, Eero Asmala, Philippe Massicotte, Denise Tonetta, Francisco Antônio Rodrigues Barbosa, Diego Pujoni, and José Fernandes Bezerra-Neto
Biogeosciences, 15, 2931–2943, https://doi.org/10.5194/bg-15-2931-2018, https://doi.org/10.5194/bg-15-2931-2018, 2018
Short summary
Short summary
Using mesocosms we investigated the effect of the increase in the allochthonous and autochthonous sources of DOM in a tropical lake, in order to simulate its effects on the characteristics of lakes caused by anthropogenic impacts. The seasonal allochthonous input has much larger effects on the lake and, in addition to increasing nutrients, alters the transparency of water and consequently controls the seasonal dynamics of phytoplankton (autochthonous source) and lake ecology.
Maria Provenzale, Anne Ojala, Jouni Heiskanen, Kukka-Maaria Erkkilä, Ivan Mammarella, Pertti Hari, and Timo Vesala
Biogeosciences, 15, 2021–2032, https://doi.org/10.5194/bg-15-2021-2018, https://doi.org/10.5194/bg-15-2021-2018, 2018
Short summary
Short summary
We extensively tested and refined a direct, high-frequency free-water CO2 measurement method to study the lake net ecosystem productivity. The method was first proposed in 2008, but neglected ever since.
With high-frequency direct methods, we can calculate the lake productivity more precisely, and parameterise its dependency on environmental variables. This helps us expand our knowledge on the carbon cycle in the water, and leads to a better integration of water bodies in carbon budgets.
Justyna J. Hampel, Mark J. McCarthy, Wayne S. Gardner, Lu Zhang, Hai Xu, Guangwei Zhu, and Silvia E. Newell
Biogeosciences, 15, 733–748, https://doi.org/10.5194/bg-15-733-2018, https://doi.org/10.5194/bg-15-733-2018, 2018
Short summary
Short summary
Our paper highlights the importance of dual-nutrient management: nitrogen (N) and phosphorus (P) in lakes with cyanobacterial harmful algal blooms.
Taihu Lake (China) experiences seasonal blooms due to increased input of N and P from field runoff. The main process investigated in our study, nitrification,
is important for N removal through denitrification. We show that nitrification is less efficient during the blooms, due to competition for nutrients between
N microbes and cyanobacteria.
Martin Berggren, Marcus Klaus, Balathandayuthabani Panneer Selvam, Lena Ström, Hjalmar Laudon, Mats Jansson, and Jan Karlsson
Biogeosciences, 15, 457–470, https://doi.org/10.5194/bg-15-457-2018, https://doi.org/10.5194/bg-15-457-2018, 2018
Short summary
Short summary
The quality of dissolved organic carbon (DOC), especially its color, is a defining feature of freshwater ecosystems. We found that colored DOC fractions are surprisingly resistant to natural degradation during water transit through many brown-water lakes. This is explained by the dominance of microbial processes that appear to selectively remove noncolored DOC. However, in lakes where sunlight degradation plays a relatively larger role, significant DOC bleaching occurs.
Peter Berg and Michael L. Pace
Biogeosciences, 14, 5595–5606, https://doi.org/10.5194/bg-14-5595-2017, https://doi.org/10.5194/bg-14-5595-2017, 2017
Short summary
Short summary
We use the aquatic eddy covariance technique – developed first for benthic O2 flux measurements – right below the air–water interface (~ 4 cm) to determine gas exchange rates and coefficients. This use of the technique is particularly useful in studies of gas exchange and its dynamics and controls. The approach can thus help reduce the recognized problem of large uncertainties linked to gas exchange estimates in traditional aquatic ecosystem studies.
Matthew Q. Morison, Merrin L. Macrae, Richard M. Petrone, and LeeAnn Fishback
Biogeosciences, 14, 5471–5485, https://doi.org/10.5194/bg-14-5471-2017, https://doi.org/10.5194/bg-14-5471-2017, 2017
Short summary
Short summary
Shallow ponds and lakes are common features in permafrost systems. We show that the chemistry of these water bodies can be dynamic, although the changes are consistent through time between ponds. This synchrony in some water chemistry appears to be related to water level variations. Because hydrological conditions can vary greatly over the course of the year and during a storm, this work underscores the importance of interpreting water samples from these systems within their hydrologic context.
Thomas Steinsberger, Martin Schmid, Alfred Wüest, Robert Schwefel, Bernhard Wehrli, and Beat Müller
Biogeosciences, 14, 3275–3285, https://doi.org/10.5194/bg-14-3275-2017, https://doi.org/10.5194/bg-14-3275-2017, 2017
Short summary
Short summary
Based on a broad dataset of lake sediment analysis and porewater measurements from various Swiss lakes, this paper argues that the accumulation of organic carbon in the sediment is one of the main driving forces for the generation of reduced substances such as methane and ammonia. These substances significantly contribute to the hypolimnetic oxygen consumption. The relationships presented help to evaluate the scale of the flux of reduced substances where no direct measurements are available.
Ana M. Morales-Williams, Alan D. Wanamaker Jr., and John A. Downing
Biogeosciences, 14, 2865–2875, https://doi.org/10.5194/bg-14-2865-2017, https://doi.org/10.5194/bg-14-2865-2017, 2017
Short summary
Short summary
Our study investigated the mechanisms sustaining cyanobacteria blooms when CO2 is depleted in lake surface waters. We found that when lake CO2 concentrations drop below those of the atmosphere, cyanobacteria switch on carbon concentrating mechanisms (CCMs), allowing them to actively take up bicarbonate. This may provide bloom-forming cyanobacteria with a competitive advantage over other algae. These results provide insight into the timing and duration of blooms in high-nutrient lakes.
Ana R. A. Soares, Ann-Kristin Bergström, Ryan A. Sponseller, Joanna M. Moberg, Reiner Giesler, Emma S. Kritzberg, Mats Jansson, and Martin Berggren
Biogeosciences, 14, 1527–1539, https://doi.org/10.5194/bg-14-1527-2017, https://doi.org/10.5194/bg-14-1527-2017, 2017
María Encina Aulló-Maestro, Peter Hunter, Evangelos Spyrakos, Pierre Mercatoris, Attila Kovács, Hajnalka Horváth, Tom Preston, Mátyás Présing, Jesús Torres Palenzuela, and Andrew Tyler
Biogeosciences, 14, 1215–1233, https://doi.org/10.5194/bg-14-1215-2017, https://doi.org/10.5194/bg-14-1215-2017, 2017
Short summary
Short summary
As first study within my PhD with the general objective to improve and adapt remote sensing algorithms for the estimation of coloured dissolved organic matter (CDOM) content in lakes in a global scale, we carried out this set of measurements and experiments.
This study gives us a better understanding of sources and variability in the optical properties of CDOM in lakes and how photobleaching controls and affects them.
Pratirupa Bardhan, Syed Wajih Ahmad Naqvi, Supriya G. Karapurkar, Damodar M. Shenoy, Siby Kurian, and Hema Naik
Biogeosciences, 14, 767–779, https://doi.org/10.5194/bg-14-767-2017, https://doi.org/10.5194/bg-14-767-2017, 2017
Short summary
Short summary
Although India has the third highest number of dams globally, there is a knowledge gap on the cycling of bioessential elements in such systems. This study (first of its kind) investigates the stable isotopes of nitrate and particulate organic matter in a pristine Indian reservoir. Nitrogen transformations in the anaerobic bottom waters were isotopically characterised. Overall, solar intensity, water depth and redox conditions are the major controls on the biogeochemical cycling in this system.
Bethany N. Deshpande, Sophie Crevecoeur, Alex Matveev, and Warwick F. Vincent
Biogeosciences, 13, 4411–4427, https://doi.org/10.5194/bg-13-4411-2016, https://doi.org/10.5194/bg-13-4411-2016, 2016
Short summary
Short summary
Subarctic lakes are changing in size as a result of permafrost thawing, resulting in mobilization of soil materials. Our study characterizes the carbon and nutrient regime of a set of thaw lakes and their adjacent permafrost soils in a rapidly degrading landscape, showing how these materials create favorable conditions for aquatic bacterial communities. We discuss the controls over the bacterial community, and demonstrate that gain processes are not a primary control.
Marloes Groeneveld, Lars Tranvik, Sivakiruthika Natchimuthu, and Birgit Koehler
Biogeosciences, 13, 3931–3943, https://doi.org/10.5194/bg-13-3931-2016, https://doi.org/10.5194/bg-13-3931-2016, 2016
Short summary
Short summary
Temporal variability in the apparent quantum yield of photochemical CDOM mineralisation in a boreal brown water lake was severalfold smaller than previously reported across different lakes. Simulated DIC photoproduction (2012–2014) averaged 2.0 ± 0.1 to 10.3 ± 0.7 g C m−2 yr−1 using the least and most reactive sample, which represented 1 to 8 % of the total mean CO2 emissions. Thus, direct CDOM photomineralisation makes only a minor contribution to mean CO2 emissions from Swedish brown water lakes.
Damien Bouffard and Marie-Elodie Perga
Biogeosciences, 13, 3573–3584, https://doi.org/10.5194/bg-13-3573-2016, https://doi.org/10.5194/bg-13-3573-2016, 2016
Short summary
Short summary
This survey of an exceptional flood over Lake Geneva challenges the long-standing hypothesis that dense, particle-loaded and oxygenated rivers plunging into lakes necessarily contribute to deep-oxygen replenishment. We identified some river intrusions as hot spots for oxygen consumption, where inputs of fresh river-borne organic matter reactivate the respiration of more refractory lacustrine organic matter in a process referred to as "priming effect".
Raquel Mendonça, Sarian Kosten, Sebastian Sobek, Simone Jaqueline Cardoso, Marcos Paulo Figueiredo-Barros, Carlos Henrique Duque Estrada, and Fábio Roland
Biogeosciences, 13, 3331–3342, https://doi.org/10.5194/bg-13-3331-2016, https://doi.org/10.5194/bg-13-3331-2016, 2016
Short summary
Short summary
Hydroelectric reservoirs in the tropics emit greenhouse gases but also bury carbon in their sediments. We investigated the efficiency of organic carbon (OC) burial in a large tropical reservoir, using spatially resolved measurements of sediment accumulation, and found that more than half (~ 57 %) of the OC deposited onto the sediment is buried. This high efficiency in OC burial indicates that tropical reservoirs may bury OC more efficiently than natural lakes.
Phil-Goo Kang, Myron J. Mitchell, Patrick J. McHale, Charles T. Driscoll, Shreeram Inamdar, and Ji-Hyung Park
Biogeosciences, 13, 2787–2801, https://doi.org/10.5194/bg-13-2787-2016, https://doi.org/10.5194/bg-13-2787-2016, 2016
Short summary
Short summary
Lakes play important roles in controlling organic matter derived from watersheds and within-lake production. The organic matter is normally measured by elemental quantities, such as carbon(C) and nitrogen(N), because the two elements are essential for aquatic ecosystems. We observed an decrease of C, but an increase of N in organic matters in a lake. The reason of the different pattern might be that inorganic N in the lake appeared to be recycled to produce organic N due to within-lake processes.
L. Pinho, C. M. Duarte, H. Marotta, and A. Enrich-Prast
Biogeosciences, 13, 865–871, https://doi.org/10.5194/bg-13-865-2016, https://doi.org/10.5194/bg-13-865-2016, 2016
Short summary
Short summary
Unlike the positive relationship reported before between partial pression of carbon dioxide and dissolved organic carbon for lake waters, we found no significant relationship in our low-latitude lakes, despite very broad ranges in both variables. The strength of this relationship declines with increasing water temperature, suggesting substantial differences in carbon cycling in warm lakes, which must be considered when upscaling limnetic carbon cycling to global scales.
S. G. Wakeham and E. A. Canuel
Biogeosciences, 13, 567–582, https://doi.org/10.5194/bg-13-567-2016, https://doi.org/10.5194/bg-13-567-2016, 2016
Short summary
Short summary
Bed sediments from the Sacramento-San Joaquin River Delta (CA) were fractionated according to density and analyzed for sediment mass distribution, elemental (C and N) composition, mineral surface area, and stable carbon and radiocarbon isotope compositions of organic carbon (OC) and fatty acids to evaluate the nature of organic carbon in river sediments. These data demonstrate the complex source and age distributions within river sediments.
B. Burpee, J. E. Saros, R. M. Northington, and K. S. Simon
Biogeosciences, 13, 365–374, https://doi.org/10.5194/bg-13-365-2016, https://doi.org/10.5194/bg-13-365-2016, 2016
Short summary
Short summary
This study investigates microbial nutrient limitation patterns across a region of southwest Greenland in relation to environmental factors. Using microbial enzyme activities to infer nutrient limitation patterns, we determined that most lakes are P-limited. Further, P limitation was tightly controlled by lake dissolved organic carbon (DOC) concentration.
A. Przytulska, J. Comte, S. Crevecoeur, C. Lovejoy, I. Laurion, and W. F. Vincent
Biogeosciences, 13, 13–26, https://doi.org/10.5194/bg-13-13-2016, https://doi.org/10.5194/bg-13-13-2016, 2016
Short summary
Short summary
Permafrost thaw lakes are a subject of increasing research interest given their abundance across the northern landscape. Our aim in the present study was to characterize the photosynthetic communities in a range of subarctic thaw lakes using a combination of HPLC analysis of algal and bacterial pigments, flow cytometry and molecular analysis. Our results showed that the thaw lakes contain diverse phototrophic communities and are a previously unrecognized habitat for abundant picophotoautotrophs.
T. Roiha, I. Laurion, and M. Rautio
Biogeosciences, 12, 7223–7237, https://doi.org/10.5194/bg-12-7223-2015, https://doi.org/10.5194/bg-12-7223-2015, 2015
Short summary
Short summary
Global warming thaws permafrost and accelerates the formation of thaw ponds in subarctic and arctic regions. These abundant ponds receive large terrestrial carbon inputs from the thawing and eroding permafrost, which is mainly used by bacterioplankton for the production of new biomass. Bacteria metabolism also produces high levels of CO2 and CH4, which make thaw ponds important sources of greenhouse gases to the atmosphere. We present carbon dynamics in thaw ponds in northern Quebec.
P. Glaz, J.-P. Gagné, P. Archambault, P. Sirois, and C. Nozais
Biogeosciences, 12, 6999–7011, https://doi.org/10.5194/bg-12-6999-2015, https://doi.org/10.5194/bg-12-6999-2015, 2015
Short summary
Short summary
In this study, we showed that logging activities have a short-term impact (1 year after the perturbation) on water quality in boreal Eastern Canadian Shield lakes. However, this effect seems to mitigate 2 years after the perturbation. Further, the analysis of the absorbance and fluorescence data showed that while DOC concentrations did significantly increase in perturbed lakes, the DOM quality did not measurably change.
Z. T. Yu, X. J. Wang, E. L. Zhang, C. Y. Zhao, and X. Q. Liu
Biogeosciences, 12, 6605–6615, https://doi.org/10.5194/bg-12-6605-2015, https://doi.org/10.5194/bg-12-6605-2015, 2015
Short summary
Short summary
Bosten Lake is the largest inland freshwater lake in China, which has been impacted by land use changes, with implications for carbon burial. Our study showed a large spatial variability in total organic carbon (TOC) (1.8–4.4%); 54–90% of TOC was from autochthonous sources. Higher TOC content was found in the east and central-north sections and near the mouth of the Kaidu River, which was attributable to allochthonous, autochthonous plus allochthonous, and autochthonous sources, respectively.
Cited articles
Aladin, N. V. and Potts, W. T. W.: Changes in the Aral Sea ecosystems during
the period 1960–1990, Hydrobiologia, 237, 67–79,
https://doi.org/10.1007/BF00016032, 1992.
Aladin, N. V. and Potts, W. T. W.: The osmoregulatory capacity of the
Ostracoda, J. Comp. Physiol. B, 166, 215–222,
https://doi.org/10.1007/BF00263985, 1996.
Anadón, P., De Deckker, P., and Julia, R.: The Pleistocene lake deposits
of the NE Baza Basin (Spain): salinity variations and ostracod succession,
Hydrobiologia, 143, 199–208, https://doi.org/10.1007/BF00026662, 1986.
Bahr, A., Lamy, F., Arz, H. W., Major, C., Kwiecien, O., and Wefer, G.:
Abrupt changes of temperature and water chemistry in the late Pleistocene and
early Holocene Black Sea, Geochem. Geophys. Geosyst., 9, 1–16,
https://doi.org/10.1029/2007GC001683, 2008.
Baird, W.: Notes on British Entomostraca, The Zoologist – A Popular
Miscellany of Natural History, 1, 193–197, 1843.
Barker, S., Knorr, G., Edwards, R. L., Parrenin, F., Putnam, A. E., Skinner,
L. C., Wolff, E., and Ziegler, M.: 800,000 years of abrupt climate
variability, Science, 334, 347–351, https://doi.org/10.1126/science.1203580,
2011.
Benson, R. H.: Ostracodes of the Rita Blanca lake deposits, Geol. Soc. Am.
Mem., 113, 107–115, 1969.
Bernasconi, S. M., Müller, I. A., Bergmann, K. D., Breitenbach, S. F. M.,
Fernandez, A., Hodell, D. A., Meckler, A. N., Millan, I., and Ziegler, M.:
Reducing uncertainties in carbonate clumped isotope analysis through
consistent carbonate-based standardization, Geochem. Geophys. Geosyst., 19,
2895–2914, https://doi.org/10.1029/2017GC007385, 2018.
Boomer, I., Horne, D. J., and Slipper, I. J.: The use of ostracods in
palaeoenvironmental studies, or what can you do with an ostracod shell?,
Paleontol. Soc. Papers, 9, 153–180,
https://doi.org/10.1017/S1089332600002199, 2003.
Bubikjan, S. A.: Ostracoda from Pliocene deposits of Armenia, Ostrakody iz
Pliotsenovykh otlozheniy Armenii, Izvestiia Akademii Nauk Armyanskoy SSR,
Seriya nauki o zemle 19, 3–11, 1966.
Bubikjan, S. A.: Recent Ostracoda from the bottom beds of the south-western
part of Lake Sevan, Izvestia Akademii nauk Armanskoj SSR, Naukii o Zemlye 37,
10–24, 1984.
Çağatay, M. N., Öğretmen, N., Damcı, E., Stockhecke, M.,
Sancar, Ü., Eriş, K. K., and Özeren, S.: Lake level and climate
records of the last 90 ka from the Northern Basin of Lake Van, eastern
Turkey, Quaternary Sci. Rev., 104, 97–116,
https://doi.org/10.1016/j.quascirev.2014.09.027, 2014.
Carbonel, P., Colin, J. P., Danielopol, D. L., Löffler, H., and
Neustrueva, I.: Paleoecology of limnic ostracodes: a review of some major
topics, Palaeogeogr. Palaeocl., 62, 413–461,
https://doi.org/10.1016/0031-0182(88)90066-1, 1988.
Chapman, M. A.: On Eucypris mytiloides (Brady), and three new
species of Eucypris Vavra (Cypridae, Ostracoda) from Australia,
Hydrobiologia, 27, 368–378, https://doi.org/10.1007/BF00042699, 1966.
Chivas, A. R., De Deckker, P., Wang, S. X., and Cali, J. A.: Oxygen-isotope
systematics of the nektic ostracod Australocypris robusta, in: The
Ostracoda: Applications in Quaternary Research, edited by: Holmes, J. A., and
Chivas, A. R., American Geophysical Union, Washington, DC, 301–313,
https://doi.org/10.1029/GM131, 2002.
Cukur, D., Krastel, S., Schmincke, H. U., Sumita, M., Çağatay, M. N.,
Meydan, A. F., Damci, E., and Stockhecke, M.: Seismic stratigraphy of Lake
Van, eastern Turkey, Quaternary Sci. Rev., 104, 63–84,
https://doi.org/10.1016/j.quascirev.2014.07.016, 2014a.
Cukur, D., Krastel, S., Schmincke, H. U., Sumita, M., Tomonaga, Y., and
Çağatay, M. N.: Water level changes in Lake Van, Turkey, during the
past ca. 600 ka: climatic, volcanic and tectonic controls J. Paleolimnol.,
52, 201–214, https://doi.org/10.1007/s10933-014-9788-0, 2014b.
Dana, G. L. and Lenz, P. H.: Effects of increasing salinity on an Artemia
population from Mono Lake, California, Oecologia, 68, 428–436,
https://doi.org/10.1007/BF01036751, 1986.
Danielopol, D. L., Cabral, M. C., Lord, A., Carbonel, P., Gross, M., Stoica,
M., Humphreys, W. F., Namiotko, T., Tóth, E.,
Külköylüoğlu, O., Piller, W. E., and Nunes, T.: Sieve-type
pore canals in the Timiriaseviinae – A contribution to the comparative
morphology and the systematics of the Limnocytheridae (Ostracoda, Crustacea),
Zootaxa, 4495, 1–64, https://doi.org/10.11646/zootaxa.4495.1.1., 2018.
De Deckker, P. and Forester, R. M.: The Use of Ostracods to Reconstruct
Palaeoenvironmental Records, in: Ostracoda in the Earth Sciences, edited by:
De Deckker, P., Colin, J. P., and Peypouquet, J. P., Elsevier, Amsterdam,
175–199, 1988.
De Deckker, P.: Ostracods of athalassic saline lakes, Hydrobiologica, 81,
131–144, https://doi.org/10.1007/978-94-009-8665-7_10, 1981.
De Deckker, P. and Lord, A.: Cyprideis torosa: a model organism for
the Ostracoda?, J. Micropalaeontol., 36, 3–6,
https://doi.org/10.1144/jmpaleo2016-100, 2017.
De Deckker, P., Chivas, A. R., and Shelley, J. M. G.: Uptake of Mg and Sr in
the euryhaline ostracod Cyprideis determined from in vitro
experiments, Palaeogeogr. Palaeocl., 148, 105–116,
https://doi.org/10.1016/S0031-0182(98)00178-3, 1999.
Decrouy, L.: Biological and environmental controls on isotopes in ostracod
shells, in: Ostracoda as proxies for quaternary climate change, edited by:
Horne, D., Holmes, J., Rodriguez-Lazaro, J., and Viehberg, F., Elsevier,
Oxford, 165–181, https://doi.org/10.1016/B978-0-444-53636-5.00010-X, 2012.
Decrouy, L. and Vennemann, T. W.: Potential influence of the chemical
composition of water on the stable oxygen isotope composition of continental
ostracods, J. Paleolimnol., 50, 577–582,
https://doi.org/10.1007/s10933-013-9719-5, 2013.
Decrouy, L., Vennemann, T. W., and Ariztegui, D.: Controls on ostracod valve
geochemistry: Part 2. Carbon and oxygen isotope compositions, Geochim.
Cosmochim. Ac., 75, 7380–7399, https://doi.org/10.1016/j.gca.2011.09.008,
2011.
Decrouy, L., Vennemann, T. W., and Ariztegui, D.: Sediment penetration depths
of epi-and infaunal ostracods from Lake Geneva (Switzerland), Hydrobiologia,
688, 5–23, https://doi.org/10.1007/s10750-010-0561-8, 2012.
Devriendt, L. S., McGregor, H. V., and Chivas, A. R.: Ostracod calcite
records the 18O∕16O ratio of the bicarbonate and carbonate ions
in water, Geochim. Cosmochim. Ac., 214, 30–50,
https://doi.org/10.1016/j.gca.2017.06.044. 2017.
Digerfeldt, G., Olsson, S., and Sandgren, P.: Reconstruction of lake-level
changes in lake Xinias, central Greece, during the last 40 000 years,
Palaeogeogr. Palaeocl., 158, 65–82,
https://doi.org/10.1016/S0031-0182(00)00029-8. 2000.
Dor, Y. B., Armon, M., Ahlborn, M., Morin, E., Erel, Y., Brauer, A., Schwab,
M. J., Tjallingii, R., and Enzel, Y.: Changing flood frequencies under
opposing late Pleistocene eastern Mediterranean climates, Sci. Rep., 8,
1–10, https://doi.org/10.1038/s41598-018-25969-6, 2018.
Edwards, S., McKirdy, D. M., Bone, Y., Gell, P. A., and Gostin, V. A.:
Diatoms and ostracods as mid-Holocene palaeoenvironmental indicators, North
Stromatolite Lake, Coorong National Park, South Australia, Aust. J. Earth
Sci., 53, 651–663, https://doi.org/10.1080/08120090600686801. 2006.
Engstrom, D. R. and Nelson, S. R.: Paleosalinity from trace metals in fossil
ostracodes compared with observational records at Devils Lake, North Dakota,
USA, Palaeogeogr. Palaeocl., 83, 295–312,
https://doi.org/10.1016/0031-0182(91)90057-X, 1991.
Forester, R. M.: Relationship of two lacustrine ostracode species to solute
composition and salinity: implications for paleohydrochemistry, Geology, 11,
435–438, https://doi.org/10.1130/0091-7613(1983)11<435:ROTLOS> 2.0.CO;2,
1983.
Forester, R. M.: Determination of the dissolved anion composition of ancient
lakes from fossil ostracodes, Geology, 14, 796–799,
https://doi.org/10.1130/0091-7613(1986)14<796:DOTDAC>2.0.CO;2, 1986.
Forester, R. M.: Pliocene-climate history of the western United States
derived from lacustrine ostracodes, Quaternary Sci. Rev., 10, 133–146,
https://doi.org/10.1016/0277-3791(91)90014-L. 1991.
Forester, R. M. and Brouwers, E. M.: Hydrochemical parameters governing the
occurrence of estuarine and marginal estuarine ostracodes: an example from
south-central Alaska, J. Paleontol., 59, 344–369, 1985.
Frenzel, P., Schulze, I., and Pint, A.: Noding of Cyprideis torosa
valves (Ostracoda) – a proxy for salinity? New data from field observations
and a long-term microcosm experiment, Int. Rev. Hydrobiol., 97, 314–329,
https://doi.org/10.1002/iroh.201211494, 2012.
Frogley, M. R., Griffiths, H. I., and Heaton, T. H.: Historical biogeography
and Late Quaternary environmental change of Lake Pamvotis, Ioannina
(north-western Greece): evidence from ostracods, J. Biogeogr., 28, 745–756,
https://doi.org/10.1046/j.1365-2699.2001.00582.x. 2001.
Fuhrmann R.: Atlas quartärer und rezenter Ostrakoden Mitteldeutschlands.
Naturkundliches Museum Mauritianum, Altenburg, 2012.
Fürstenberg, S., Frenzel, P., Peng, P., Henkel, K., and Wrozyna, C.:
Phenotypical variation in Leucocytherella sinensis Huang, 1982
(Ostracoda): a new proxy for palaeosalinity in Tibetan lakes, Hydrobiologia,
751, 55–72, 2015.
Gouramanis, C. and De Deckker, P.: Alkalinity control on the partition
coefficients in lacustrine ostracodes from Australia, Geology, 38, 359–362,
https://doi.org/10.1130/G30235.1, 2010.
Gouramanis, C., Wilkins, D., and De Deckker, P.: 6000 years of environmental
changes recorded in Blue Lake, South Australia, based on ostracod ecology and
valve chemistry, Palaeogeogr. Palaeocl., 297, 223–237,
https://doi.org/10.1016/j.palaeo.2010.08.005, 2010.
Hammarlund, D., Aravena, R., Barnekow, L., Buchardt, B., and Possnert, G.:
Multi-component carbon isotope evidence of early Holocene environmental
change and carbon-flow pathways from a hard-water lake in northern Sweden, J.
Paleolimnol., 18, 219–233, https://doi.org/10.1023/A:1007953614927, 1997.
Heaton, T. H. E., Holmes, J. A., and Bridgwater, N. D.: Carbon and oxygen
isotope variations among lacustrine ostracods: implications for
palaeoclimatic studies, The Holocene, 5, 428–434,
https://doi.org/10.1177/095968369500500405, 1995.
Holmes, J. A.: Trace-element and stable-isotope geochemistry of non-marine
ostracod shells in Quaternary palaeoenvironmental reconstruction, J.
Paleolimnol., 15, 223–235, https://doi.org/10.1007/BF00213042, 1996.
Holmes, J. A. and De Deckker, P.: The chemical composition of ostracod
shells: applications in Quaternary palaeoclimatology, in: Ostracoda as
proxies for quaternary climate change, edited by: Horne, D., Holmes, J.,
Rodriguez-Lazaro, J., and Viehberg, F., Elsevier, Oxford, 131–143,
https://doi.org/10.1016/B978-0-444-53636-5.00008-1, 2012.
Holmes, J. A., Allen, M. J., Street-Perrott, F. A., Ivanovich, M., Perrott,
R. A., and Waller, M. P.: Late Holocene palaeolimnology of Bal Lake, northern
Nigeria, a multidisciplinary study, Palaeogeogr. Palaeocl., 148, 169–185,
https://doi.org/10.1016/S0031-0182(98)00182-5, 1999.
Holmes, J., Sayer, C. D., Liptrot, E., and Hoare, D. J.: Complex controls on
ostracod palaeoecology in a shallow coastal brackish-water lake: implications
for palaeosalinity reconstruction, Freshwater Biology, 55, 2484–2498,
https://doi.org/10.1111/j.1365-2427.2010.02478.x, 2010.
Horne, D. J., Holmes, J. A., Rodriguez-Lazaro, J., and Viehberg, F. A.:
Ostracoda as proxies for Quaternary climate change: overview and future
prospects, in: Ostracoda as proxies for quaternary climate change, edited by:
Horne, D., Holmes, J., Rodriguez-Lazaro, J., and Viehberg, F., Elsevier,
Oxford, 305–315, https://doi.org/10.1016/B978-0-444-53636-5.00018-4, 2012.
Huang, B., Yang H., and You, K.,: Pliocene and Quaternary Ostracoda from
southern and southwestern Xizang, in: Integrated Survey of Tibetan Plateau of
Chinese Academy of Sciences, Palaeobiology of Xizang, 4, 326–348, 1982.
Jones, M. D., Abu-Jaber, N., AlShdaifat, A., Baird, D., Cook, B. I.,
Cuthbert, M. O., Dean, J. R., Djamali, M., Eastwood, W., Fleitmann, D.,
Haywood, A., Kwiecien, O., Larsen, J., Maher, L. A., Metcalfe, S. E., Parker,
A., Petrie, C. A., Primmer, N., Richter, T., Roberts, N., Roe, J., Tindall,
J. C., Ünal-Imer, E., and Weeks, L.: 20,000 years of societal
vulnerability and adaptation to climate change in southwest Asia, WIREs
Water, 6, 1–31, https://doi.org/10.1002/wat2.1330, 2018.
Jones, T. R.: Description of the Entomostraca of the Pleistocene Beds of
Newbury, Copford, Clacton, and Grays, The Annals and Magazine of Natural
History Series, 2, 25–28, 1850.
Karanovic, I.: Recent Freshwater Ostracods of the World, Springer-Verlag,
Berlin, 2012.
Keatings, K. W., Heaton, T. H. E., and Holmes, J. A.: Carbon and oxygen
isotope fractionation in non-marine ostracods: results from a “natural
culture” environment, Geochim. Cosmochim. Ac., 66, 1701–1711,
https://doi.org/10.1016/S0016-7037(01)00894-8, 2002.
Keatings, K., Holmes, J., Flower, R., Horne, D., Whittaker, J. E., and
Abu-Zied, R. H.: Ostracods and the Holocene palaeolimnology of Lake Qarun,
with special reference to past human–environment interactions in the Faiyum
(Egypt), Hydrobiologia, 654, 155–176,
https://doi.org/10.1007/s10750-010-0379-4, 2010.
Kelts, K. and Talbot, M.: Lacustrine carbonates as geochemical archives of
environmental change and biotic/abiotic interactions, in: Large Lakes:
Ecological Structure and Function, edited by: Tilzer, M. M. and Serruya, C.,
Science Technical Publications, Madison, 290–317, 1990.
Kempe, S., Kazmierczak, J., Landmann, G., Konuk, T., Reimer, A., and Lipp,
A.: Largest known microbialites discovered in Lake Van, Turkey, Nature, 349,
605–608, https://doi.org/10.1038/349605a0, 1991.
Keyser, D.: Histological peculiarities of the noding process in
Cyprideis torosa (Jones)(Crustacea, Ostracoda), Hydrobiologia, 538,
95–106, https://doi.org/10.1007/s10750-004-4940-x, 2005.
Keyser, D. and Aladin, N.: Noding in Cyprideis torosa and its
causes, Studia Quaternaria, 21, 19–24, 2004.
Kilenyi, T. I.: Transient and balanced genetic polymorphism as an explanation
of variable noding in the ostracode Cyprideis torosa,
Micropaleontology, 18, 47–63, https://doi.org/10.2307/1484978, 1972.
Kim, S. T. and O'Neil, J. R.: Equilibrium and nonequilibrium oxygen isotope
effects in synthetic carbonates, Geochim. Cosmochim. Ac., 61, 3461–3475,
https://doi.org/10.1016/S0016-7037(97)00169-5, 1997.
Külköylüoğlu, O., Sari, N., and Akdemir, D.: Distribution and
ecological requirements of ostracods (Crustacea) at high altitudinal ranges
in Northeastern Van (Turkey), Ann. Limnol.-Int. J. Lim., 48, 39–51,
https://doi.org/10.1051/limn/2011060, 2012.
Kwiecien, O., Stockhecke, M., Pickarski, N., Heumann, G., Litt, T., Sturm,
M., Anselmetti, F., Kipfer, R., and Haug, G. H.: Dynamics of the last four
glacial terminations recorded in Lake Van, Turkey, Quaternary Sci. Rev., 104,
42–52, https://doi.org/10.1016/j.quascirev.2014.07.001, 2014.
Landmann, G., Reimer, A., and Kempe, S.: Climatically induced lake level
changes at Lake Van, Turkey, during the Pleistocene/Holocene transition,
Glob. Biogeochem. Cy., 10, 797–808, https://doi.org/10.1029/96GB02347, 1996.
Leng, M. J. and Marshall, J. D.: Palaeoclimate interpretation of stable
isotope data from lake sediment archives, Quaternary Sci. Rev., 23, 811–831,
https://doi.org/10.1016/j.quascirev.2003.06.012, 2004.
Li, H. C. and Ku, T. L.: δ13C-δ18C covariance as a
paleohydrological indicator for closed-basin lakes, Palaeogeogr. Palaeocl.,
133, 69–80, https://doi.org/10.1016/S0031-0182(96)00153-8, 1997.
Li, X., Liu, W., Zhang, L., and Sun, Z.: Distribution of recent ostracod
species in the Lake Qinghai area in northwestern China and its ecological
significance, Ecol. Indic., 10, 880–890,
https://doi.org/10.1016/j.ecolind.2010.01.012, 2010.
Li, X., Liu, W., Zhang, P., An, Z., and Zhang, L.: Species, valve size, and
pretreatment effects on δ18O and δ13C values of
ostracod valves from Lake Qinghai, Qinghai–Tibet Plateau, Chem. Geol., 246,
124–134, https://doi.org/10.1016/j.chemgeo.2007.09.007, 2007.
Lister, G. S.: Stable isotopes from lacustrine Ostracoda as tracers for
continental palaeoenvironments, in: Ostracoda in the Earth Sciences, edited
by: De Deckker, P., Colin, J. P., and Peypouquet, J. P., Elsevier, Amsterdam,
201–218, 1988.
Litt, T. and Anselmetti, F. S.: Lake Van deep drilling project PALEOVAN,
Quaternary Sci. Rev., 104, 1–7, https://doi.org/10.5194/sd-14-18-2012, 2014.
Litt, T., Anselmetti, F. S., Baumgarten, H., Beer, J., Cagatay, N., Cukur,
D., Damci, E., Glombitza, C., Haug, G., Heumann, G., Kallmeyer, H., Kipfer,
R., Krastel, S., Kwiecien, O., Meydan, A. F., Orcen, S., Pickarski, N.,
Randlett, M.-E., Schmincke, H.-U., Schubert, C. J., Sturm, M., Sumita, M.,
Stockhecke, M., Tomonaga, Y., Vigliotti, L., Wonik, T., and the PALEOVAN
Scientific Team: 500,000 Years of Environmental History in Eastern Anatolia:
The PALEOVAN Drilling Project, Sci. Dril., 14, 18–29,
https://doi.org/10.2204/iodp.sd.14.02.2012, 2012.
Litt, T., Krastel, S., Sturm, M., Kipfer, R., Örcen, S., Heumann, G.,
Franz, S. O., Ülgen, U. B., and Niessen, F.: “PALEOVAN”, International
Continental Scientific Drilling Program (ICDP): site survey results and
perspectives, Quaternary Sci. Rev., 28, 1555–1567,
https://doi.org/10.1016/j.quascirev.2009.03.002, 2009.
Litt, T., Pickarski, N., Heumann, G., Stockhecke, M., and Tzedakis, P. C.: A
600,000 year long continental pollen record from Lake Van, eastern Anatolia
(Turkey), Quaternary Sci. Rev., 104, 30–41,
https://doi.org/10.1016/j.quascirev.2014.03.017, 2014.
Marco-Barba, J., Ito, E., Carbonell, E., and Mesquita-Joanes, F.: Empirical
calibration of shell chemistry of Cyprideis torosa (Jones,
1850)(Crustacea: Ostracoda), Geochim. Cosmochim. Ac., 93, 143–163,
https://doi.org/10.1016/j.gca.2012.06.019. 2012.
Marco-Barba, J., Mesquita-Joanes, F., and Miracle, M. R.: Ostracod
palaeolimnological analysis reveals drastic historical changes in salinity,
eutrophication and biodiversity loss in a coastal Mediterranean lake, The
Holocene, 23, 556–567, https://doi.org/10.1177/0959683612466752, 2013.
Martens, K.: Effects of temperature and salinity on postembryonic growth in
Mytilocypris henricae (Chapman)(Crustacea, Ostracoda), J. Crustac.
Biol., 5, 258–272, https://doi.org/10.2307/1547873, 1985.
McCormack, J.: McCormack et al._Biogeosciences_2019, Mendeley Data, v2, https://doi.org/10.17632/8bfshc85ww.2, 2019.
McCormack, J., Bontognali, T. R. R., Immenhauser, A., and Kwiecien, O.:
Controls on Cyclic Formation of Quaternary Early Diagenetic Dolomite,
Geophys. Res. Lett., 45, 3625–3634, https://doi.org/10.1002/2018GL077344,
2018.
McCormack, J., Nehrke, G., Jöns, N., Immenhauser, A., and Kwiecien, O.:
Refining the interpretation of lacustrine carbonate isotope records:
Implications of a mineralogy-specific Lake Van case study, Chem. Geol., 513,
167–183, https://doi.org/10.1016/j.chemgeo.2019.03.014, 2019a.
McCormack, J., Akdemir, D., Wrozyna, C., Kwiecien, O., and Viehberg, F.: The
Quaternary ostracod fauna of the ancient soda lakes of Asia Minor with
special emphasis on Lake Van (Turkey), in preparation, 2019b.
Meisch, C.: Freshwater Ostracoda of Western and Central Europe, in:
Süßwasserfauna von Mitteleuropa, edited by: Schwoerbel, J. and Zwick,
P., Akademischer Verlag Spektrum, Heidelberg, 522 pp., 2000.
Mesquita-Joanes F., Smith A. J., and Viehberg F. A.: The Ecology of Ostracoda
Across Levels of Biological Organisation from Individual to Ecosystem: A
Review of Recent Developments and Future Potential, in: Developments in
Quaternary Sciences, vol. 17, edited by: Horne D. J., Holmes J. A.,
Rodriguez-Lazaro J., and Viehberg F. A., Elsevier, Amsterdam, 15–35,
https://doi.org/10.1016/B978-0-444-53636-5.00002-0, 2012.
Meyer, J., Wrozyna, C., Gross, M., Leis, A., and Piller, W. E.: Morphological
and geochemical variations of Cyprideis (Ostracoda) from modern waters of the
northern Neotropics, Limnology, 18, 251–273,
https://doi.org/10.1007/s10201-016-0504-9, 2016.
Neale, J. W.: Ostracods and palaeosalinity reconstruction, in: Ostracoda in
the Earth Sciences, edtited by: De Deckker, P., Colin, J. P., and Peypouquet,
J. P., Elsevier, Amsterdam, 125–157, 1988.
NGRIP members, Andersen, K. K., Azuma, N., Barnola, J. M., Bigler, M.,
Biscaye, P., Caillon, N., Chappellaz, J., Clausen, H. B., Dahl-Jensen, D.,
Fischer, H., Flückiger, J., Fritzsche, D., Fujii, Y., Goto-Azuma, K.,
Grønvold, K., Gundestrup, N. S., Hansson, M., Huber, C., Hvidberg, C. S.,
Johnsen, S. J., Jonsell, U., Jouzel, J., Kipfstuhl, S., Landais, A.,
Leuenberger, M., Lorrain, R., Masson-Delmotte, V., Miller, H., Motoyama, H.,
Narita, H., Popp, T., Rasmussen, S. O., Raynaud, D., Rothlisberger, R., Ruth,
U., Samyn, D., Schwander, J., Shoji, H., Siggard-Andersen, M.-L., Steffensen,
J. P., Stocker, T., Sveinbjörnsdóttir, A. E., Svensson, A., Takata,
M., Tison, J.-L., Thorsteinsson, T., Watanabe, O., Wilhelms, F., and White,
J. W. C.: High-resolution record of Northern Hemisphere climate extending
into the last interglacial period, Nature, 431, 147–151,
https://doi.org/10.1038/nature02805, 2004.
North, S. M., Stockhecke, M., Tomonaga, Y., and Mackay, A. W.: Analysis of a
fragmentary diatom record from Lake Van (Turkey) reveals substantial
lake-level variability during previous interglacials MIS7 and MIS5e, J.
Paleolimnol., 59, 119–133, https://doi.org/10.1007/s10933-017-9973-z, 2017.
Pickarski, N. and Litt, T.: A new high-resolution pollen sequence at Lake
Van, Turkey: insights into penultimate interglacial–glacial climate change
on vegetation history, Clim. Past, 13, 689–710,
https://doi.org/10.5194/cp-13-689-2017, 2017.
Pickarski, N., Kwiecien, O., Djamali, M., and Litt, T.: Vegetation and
environmental changes during the last interglacial in eastern Anatolia
(Turkey): a new high-resolution pollen record from Lake Van, Palaeogeogr.
Palaeocl., 435, 145–158, https://doi.org/10.1016/j.palaeo.2015.06.015,
2015a.
Pickarski, N., Kwiecien, O., Langgut, D., and Litt, T.: Abrupt climate and
vegetation variability of eastern Anatolia during the last glacial, Clim.
Past, 11, 1491–1505, https://doi.org/10.5194/cp-11-1491-2015, 2015b.
Randlett, M. E., Bechtel, A., van der Meer, M. T., Peterse, F., Litt, T.,
Pickarski, N., Kwiecien, O., Stockhecke, M., Wehrli, B., and Schubert, C. J.:
Biomarkers in Lake Van sediments reveal dry conditions in eastern Anatolia
during 110.000–10.000 years BP, Geochem. Geophys., 18, 571–583,
https://doi.org/10.1002/2016GC006621, 2017.
Reimer, A., Landmann, G., and Kempe, S.: Lake Van, eastern Anatolia,
hydrochemistry and history, Aquat. Geochem., 15, 195–222,
https://doi.org/10.1007/s10498-008-9049-9, 2009.
Rosenfeld, A. and Vesper, B.: The variability of the sieve-pores in Recent
and fossil species of Cyprideis torosa (Jones, 1850) as an indicator
for salinity and palaeosalinity, in: Aspects of Ecology and Zoogeography of
Recent and Fossil Ostracoda, edited by: Löffler, H. and Danielopol, D.,
Junk, The Hague, 55–67, 1977.
Ruiz, F., Abad, M., Bodergat, A. M., Carbonel, P., Rodríguez-Lázaro,
J., González-Regalado, M. L., Toscano, A., García, E. X., and
Prenda, J.: Freshwater ostracods as environmental tracers, Int. J. Environ.
Sci. Technol., 10, 1115–1128, https://doi.org/10.1007/s13762-013-0249-5,
2013.
Smith, A. J.: Lacustrine ostracodes as hydrochemical indicators in lakes of
the north-central United States, J. Paleolimnol., 8, 121–134,
https://doi.org/10.1007/BF00119785, 1993.
Smith, A. J. and Palmer, D. F.: The versatility of Quaternary ostracods as
palaeoclimate proxies: comparative testing of geochemical, ecological and
biogeographical approaches, in: Ostracoda as proxies for quaternary climate
change, edited by: Horne, D., Holmes, J., Rodriguez-Lazaro, J., and Viehberg,
F., Elsevier, Oxford, 183–203,
https://doi.org/10.1016/B978-0-444-53636-5.00011-1, 2012.
Steffensen, J. P., Andersen, K. K., Bigler, M., Clausen, H. B., Dahl-Jensen,
D., Fischer, H., Goto-Azuma, K., Hansson, M., Johnson, S. J., Jouzel, J.,
Masson-Delmotte, V., Popp, T., Rasmussen, S. O., Röthlisberger, R., Ruth,
U., Stauffer, B., Siggaard-Andersen M.-L., Sveinbjörnsdóttir, A. E.,
Svensson, A., and White, J. W. C.: High-resolution Greenland ice core data
show abrupt climate change happens in few years, Science, 321, 680–684,
https://doi.org/10.1126/science.1157707, 2008.
Stevens, L. R., Djamali, M., Andrieu-Ponel, V., and de Beaulieu, J. L.:
Hydroclimatic variations over the last two glacial/interglacial cycles at
Lake Urmia, Iran, J. Paleolimnol., 47, 645–660,
https://doi.org/10.1007/s10933-012-9588-3, 2012.
Stockhecke, M., Anselmetti, F. S., Meydan, A. F., Odermatt, D., and Sturm,
M.: The annual particle cycle in Lake Van (Turkey), Palaeogeogr. Palaeocl.,
333, 148–159, https://doi.org/10.1016/j.palaeo.2012.03.022, 2012.
Stockhecke, M., Kwiecien, O., Vigliotti, L., Anselmetti, F. S., Beer, J.,
Çağatay, M. N., Channell, J. E. T., Kipfer, R., Lachner, J., Litt,
T., Pickarski, N., and Sturm, M.: Chronostratigraphy of the 600,000 year old
continental record of Lake Van (Turkey), Quaternary Sci. Rev., 104, 8–17,
https://doi.org/10.1016/j.quascirev.2014.04.008, 2014b.
Stockhecke, M., Sturm, M., Brunner, I., Schmincke, H. U., Sumita, M., Kipfer,
R., Cukur, D., Kwiecien, O., and Anselmetti, F. S.: Sedimentary evolution and
environmental history of Lake Van (Turkey) over the past 600 000 years,
Sedimentology, 61, 1830–1861, https://doi.org/10.1111/sed.12118, 2014a.
Suzin, A. V.: Ostracoda from tertiary deposits of the North Caucasus.
Grozninskii Orlena Trudovogo Krasnogo Znameni Nephtrnoi Institut, 11–184,
1956 (in Russian).
Svensson, A., Andersen, K. K., Bigler, M., Clausen, H. B., Dahl-Jensen, D.,
Davies, S. M., Johnsen, S. J., Muscheler, R., Parrenin, F., Rasmussen, S. O.,
Röthlisberger, R., Seierstad, I., Steffensen, J. P., and Vinther, B. M.:
A 60 000 year Greenland stratigraphic ice core chronology, Clim. Past, 4,
47–57, https://doi.org/10.5194/cp-4-47-2008, 2008.
Tomonaga, Y., Brennwald, M. S., Livingstone, D. M., Kwiecien, O., Randlett,
M. È., Stockhecke, M., Unwin, K., Anselmetti, F. S., Beer, J., Haug, G.
H., Schubert, C. J., Sturm, M., and Kipfer, R.: Porewater salinity reveals
past lake-level changes in Lake Van, the Earth's largest soda lake, Sci.
Rep., 7, 1–10, https://doi.org/10.1038/s41598-017-00371-w, 2017.
Tressler, W. L.: The Ostracoda of Great Slave Lake, J. Wash. Acad. Sci., 47,
415–423, 1957.
Tzedakis, P. C.: Seven ambiguities in the Mediterranean palaeoenvironmental
narrative, Quaternary Sci. Rev., 26, 2042–2066,
https://doi.org/10.1016/j.quascirev.2007.03.014, 2007.
Van der Meeren, T., Verschuren, D., Ito, E., and Martens, K.: Morphometric
techniques allow environmental reconstructions from low-diversity continental
ostracode assemblages, J. Paleolimnol., 44, 903–911,
https://doi.org/10.1007/s10933-010-9463-z, 2010.
Van der Meeren, T., Ito, E., Verschuren, D., Almendinger, J. E., and Martens,
K.: Valve chemistry of Limnocythere inopinata (Ostracoda) in a cold
arid environment – implications for paleolimnological interpretation,
Palaeogeogr. Palaeocl., 306, 116–126,
https://doi.org/10.1016/j.palaeo.2011.04.006, 2011.
Van Harten, D.: Variable noding in Cyprideis torosa (Ostracoda,
Crustacea): an overview, experimental results and a model from Catastrophe
Theory, Hydrobiologia, 419, 131–139,
https://doi.org/10.1023/A:1003935419364, 2000.
Vesper, B.: To the problem of noding on Cyprideis torosa (Jones,
1850), B Am. Paleontology, 65, 205–216, 1975.
Viehberg F. A. and Mesquita-Joanes F.: Quantitative Transfer Function
Approaches in Palaeoclimatic Reconstruction Using Quaternary Ostracods, in:
Ostracoda as Proxies for Quaternary Climate Change, Vol. 17, edited by:
Horne, D. J., Holmes, J. A., Rodriguez-Lazaro, J., and Viehberg F. A.,
Elsevier, Amsterdam, 47–64,
https://doi.org/10.1016/B978-0-444-53636-5.00004-4, 2012.
von Grafenstein, U., Eicher, U., Erlenkeuser, H., Ruch, P., Schwander, J.,
and Ammann, B.: Isotope signature of the Younger Dryas and two minor
oscillations at Gerzensee (Switzerland): palaeoclimatic and palaeolimnologic
interpretation based on bulk and biogenic carbonates, Palaeogeogr. Palaeocl.,
159, 215–229, https://doi.org/10.1016/S0031-0182(00)00086-9, 2000.
von Grafenstein, U., Erlernkeuser, H., and Trimborn, P.: Oxygen and carbon
isotopes in modern fresh-water ostracod valves: assessing vital offsets and
autecological effects of interest for palaeoclimate studies, Palaeogeogr.
Palaeocl., 148, 133–152, https://doi.org/10.1016/S0031-0182(98)00180-1,
1999.
Wick, L., Lemcke, G., and Sturm, M.: Evidence of Lateglacial and Holocene
climatic change and human impact in eastern Anatolia: high-resolution pollen,
charcoal, isotopic and geochemical records from the laminated sediments of
Lake Van, Turkey, The Holocene, 13, 665–675,
https://doi.org/10.1191/0959683603hl653rp, 2003.
Wilkinson, I. P., Bubikyan, S. A., and Gulakyan, S. Z.: The impact of late
Holocene environmental change on lacustrine Ostracoda in Armenia,
Palaeogeogr. Palaeocl., 225, 187–202,
https://doi.org/10.1016/j.palaeo.2005.06.010, 2005.
Wolff, E. W., Chappellaz, J., Blunier, T., Rasmussen, S. O., and Svensson,
A.: Millennial-scale variability during the last glacial: The ice core
record, Quaternary Sci. Rev., 29, 2828–2838,
https://doi.org/10.1016/j.quascirev.2009.10.013, 2010.
Wrozyna, C., Frenzel, P., Daut, G., Mäusbacher, R., Zhu, L., and Schwalb,
A.: Holocene lake-level changes of Lake Nam Co, Tibetan Plateau, deduced from
ostracod assemblages and δ18O and δ13C
signatures of their valves, in: Ostracoda as Proxies for Quaternary Climate
Change, Vol. 17, edited by: Horne, D., Holmes, J., Rodriguez-Lazaro, J., and
Viehberg, F., Elsevier, Amsterdam, 47–64,
https://doi.org/10.1016/B978-0-444-53636-5.00016-0, 2012.
Xia, J., Ito, E., and Engstrom, D. R.: Geochemistry of ostracode calcite:
Part 1. An experimental determination of oxygen isotope fractionation,
Geochim. Cosmochim. Ac., 61, 377–382,
https://doi.org/10.1016/S0016-7037(96)00351-1, 1997.
Xu, H., Ai, L., Tan, L., and An, Z.: Stable isotopes in bulk carbonates and
organic matter in recent sediments of Lake Qinghai and their climatic
implications, Chem. Geol., 235, 262–275,
https://doi.org/10.1016/j.chemgeo.2006.07.005, 2006.
Yin, Y., Geiger, W., and Martens, K.: Effects of genotype and environment on
phenotypic variability in Limnocythere inopinata (Crustacea:
Ostracoda), Hydrobiologia, 400, 85–114, https://doi.org/10.1023/A:1003759125903, 1999.
Zhang, J., Holmes, J. A., Chen, F., Qiang, M., Zhou, A., and Chen, S.: An
850-year ostracod-shell trace-element record from Sugan Lake, northern
Tibetan Plateau, China: Implications for interpreting the shell chemistry in
high-Mg ∕ Ca waters, Quat. Int., 194, 119–133,
https://doi.org/10.1016/j.quaint.2008.05.003, 2009.
Short summary
We juxtapose changes in ostracod taxonomy, morphology (noding) and oxygen (δ18O) and carbon (δ13C) isotopic composition for the last 150 kyr with independent low-resolution salinity proxies. We demonstrate that for Lake Van, salinity is the most important factor influencing the composition of the ostracod assemblage and the formation of nodes on the valves of limnocytherinae species. Ostracod δ18O shows a higher sensibility towards climatic and hydrological variations than the bulk isotopy.
We juxtapose changes in ostracod taxonomy, morphology (noding) and oxygen (δ18O) and carbon...
Altmetrics
Final-revised paper
Preprint