Spatial and seasonal patterns of water isotopes in northeastern German lakes

Abstract. Water isotopes (δ2H and δ18O) were analyzed in samples collected in lakes associated to riverine systems in northeastern Germany throughout 2020. The dataset (Aichner et al., 2021) is derived from water samples collected at a) lake shores (sampled in March and July 2020); b) buoys which were temporarily installed in deep parts of the lake (sampled monthly from March to October 2020); c) multiple spatially distributed spots in four selected lakes (sampled in September 2020); d) the outflow of Müggelsee (sampled biweekly from March 2020 to January 2021). At shores, water was sampled with a pipette from 40–60 cm below water surface and directly transferred into a measurement vial, while at deeper parts of the lake a Limnos water sampler was used to obtain samples from 1 m below surface. Isotope analysis was conducted at IGB Berlin, using a Picarro L2130-i cavity ring-down spectrometer. The data give information about the seasonal isotope amplitude in the sampled lakes and about spatial isotope patterns in different branches of the associated riverine systems.

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Stable Isotope Analysis of Saline Water Samples on a Cavity Ring-down Spectroscopy Instrument

Environmental Science & Technology ◽

10.1021/es4049412 ◽

2014 ◽

Vol 48 (5) ◽

pp. 2827-2834 ◽

Cited By ~ 34

Author(s):

Grzegorz Skrzypek ◽

Douglas Ford

Keyword(s):

Stable Isotope ◽

Stable Isotope Analysis ◽

Water Samples ◽

Saline Water ◽

Isotope Analysis ◽

Cavity Ring Down Spectroscopy ◽

Cavity Ring Down

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Filamentous fungi isolated from sand and water of "Bairro Novo" and "Casa Caiada" beaches, Olinda, Pernambuco, Brazil

Brazilian Journal of Biology ◽

10.1590/s1519-69842008000300016 ◽

2008 ◽

Vol 68 (3) ◽

pp. 577-582 ◽

Cited By ~ 26

Author(s):

DNF. Gomes ◽

MAQ. Cavalcanti ◽

MJS. Fernandes ◽

DMM. Lima ◽

JZO. Passavante

Keyword(s):

Water Samples ◽

Water Surface ◽

High Tide ◽

Sand Sample ◽

Distilled Water ◽

Sabouraud Agar ◽

Sand Surface ◽

Heterotrophic Microorganisms ◽

Petri Dishes ◽

Dry And Rainy Seasons

Fungi comprehend a heterogeneous group of heterotrophic microorganisms that act as saprobes or parasites or, less frequently, as symbionts living in association with other organisms. They are cosmopolitan and important components of ecosystems. Considering the small number of Brazilian papers on the filamentous mycota in marine environments, and the need to improve knowledge of the diversity of these microfungi in "Casa Caiada" and "Bairro Novo" beaches, Olinda, PE, the aim of this work was to isolate and identify the fungi from sand and water samples of these ecosystems. Thirty two samplings of sand (surface and 20 cm deep) and water (surface and 1 m deep) were carried out during the dry and rainy seasons, in low and high tide. From each sand sample, a suspension was made with 50 g of sand diluted in 90 mL of sterilized distilled water. From each sand suspension and water sample, 0.5 mL was spread, in triplicate, onto Petri dishes containing Sabouraud Agar added of chloramphenicol. The plates were incubated at 28 °C (±2 °C). Fifty seven species were isolated, identified, and classified in 20 genera. Aspergillus and Penicillium were the most frequent genera in both sand and water, with a total of 11 and 19 species, respectively.

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Stable isotope geochemistry of Oxygen and Hydrogen: A case study of the Satluj River Basin, India

10.5194/egusphere-egu21-2375 ◽

2021 ◽

Author(s):

Akhtar Jahan ◽

Mohd Usman Khan ◽

Nachiketa Rai ◽

Abhayanand Singh Maurya ◽

Sudhir Kumar

Keyword(s):

Stable Isotope ◽

River Water ◽

Water Samples ◽

Hydrological Cycle ◽

Indian Subcontinent ◽

Monsoon Season ◽

Isotope Analysis ◽

Mean Value ◽

Isotopic Analyses ◽

The Mean

Stable isotope analysis of hydrogen and oxygen is one of the important methods used to model the hydrological cycle. Oxygen and hydrogen isotopic investigation of river water, its tributaries, and groundwater of its catchment from the Satluj basin was undertaken to estimate the contributions of the main sources comprising discharge during major periods throughout a hydrologic year.Estimation of the snow/glaciers melt contribution is also very important for tracing the sources and processes regulating the flow from the provenance and reservoirs in the context of global warming, for estimating flood flow, and for other water resource development activities in large parts of the Indian subcontinent. Water samples were collected during the non-monsoon season at increasing altitudes. In this work, in addition to stable isotopes, we also assessed the water quality using various physicochemical parameters and geochemistry of the water.From isotopic analyses of river water samples, the mean value of the &#948;18O was found to be ~ -13&#8240;, and the mean value of &#948;D was found to be~ -85&#8240;. For the samples from Satluj tributaries, the mean value of the &#948;18O was ~ -11&#8240;, and the mean value of &#948;D was ~ -69&#8240;. A mean value of -8.4&#8240;, was found based on the &#948;18O measurements of the groundwater samples, while the average &#948;D value was found to be ~ -55&#8240;.For the mainstream and tributary, LWL, y = 8.2604x +20.208, and range of d-excess (>10&#8240;) and y = 8.2079x + 22.182 and d-excess > 10&#8240; indicates a system recharged by sources of recycled moisture derived from continental sources in addition to monsoonal climates. For the groundwater data, the slope is 6.7, and d-excess ranges from 7&#8240; to 17&#8240;. These observations are suggestive of the monsoonal source of Indian Ocean precipitation that has experienced significant evaporation during the non-monsoon season.Our new data clearly shows that the surface water whether mainstream, tributary, and groundwater isotopes are homogenized from regional trends in precipitation, modified by evaporation, and are thus greatly influenced by latitude, elevation, and patterns of climate.&#160;

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Rapid-Swept CW Cavity Ring-down Laser Spectroscopy for Carbon Isotope Analysis

Journal of Nuclear Science and Technology ◽

10.1080/18811248.2006.9711095 ◽

2006 ◽

Vol 43 (4) ◽

pp. 311-315 ◽

Cited By ~ 1

Author(s):

Hideki TOMITA ◽

Kenichi WATANABE ◽

Yu TAKIGUCHI ◽

Jun KAWARABAYASHI ◽

Tetsuo IGUCHI

Keyword(s):

Carbon Isotope ◽

Laser Spectroscopy ◽

Isotope Analysis ◽

Carbon Isotope Analysis ◽

Cavity Ring Down

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Hydrogen and Oxygen stable isotope analysis of water in fruits and vegetables by using cavity ring-down spectrometry

Journal of Japanese Association of Hydrological Sciences ◽

10.4145/jahs.46.157 ◽

2016 ◽

Vol 46 (2) ◽

pp. 157-166

Author(s):

Yaeko SUZUKI

Keyword(s):

Stable Isotope ◽

Stable Isotope Analysis ◽

Fruits And Vegetables ◽

Isotope Analysis ◽

Oxygen Stable Isotope ◽

Cavity Ring Down

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Speleothem water content as a proxy for past moisture variability in stalagmites from Milandre Cave, Switzerland

10.5194/egusphere-egu2020-18849 ◽

2020 ◽

Author(s):

Stéphane Affolter ◽

Dominik Fleitmann ◽

Anamaria Häuselmann ◽

Markus Leuenberger

Keyword(s):

Fluid Inclusion ◽

Water Content ◽

Central Europe ◽

Fluid Inclusions ◽

Quantitative Estimation ◽

Isotope Analysis ◽

Water Isotopes ◽

The University ◽

Nw Switzerland ◽

Moisture Variability

Speleothems are powerful archives able to gain relevant paleoclimate information on temperature, moisture source or rainfall. Specifically, there is a need for new proxy related to past moisture availability, which would allow reconstruction especially in Europe, where such records are lacking. Among speleothem-based records, quantitative estimation of the water content (hereafter WC) remains rare as it is generally a collateral result of more challenging analyses such as isotope determinations of fluid inclusions or noble gases. Using a recently developed method to analyse speleothem fluid inclusion water isotopes (Affolter et al., 2014), we obtained a record of more than 250 WC data covering the Younger Dryas and Holocene intervals with a decadal to multi-decadal resolution measured on two Swiss stalagmites from Milandre Cave, NW Switzerland. The crushing of samples in the measuring line resulted in a mean WC of 1.9 microlitre of water per gram of crushed calcite from both stalagmites. The comparison with other paleohumidity-related indicators from central Europe suggests that the WC is related to past moisture variability. In addition, trace elements strontium (Sr) and magnesium (Mg) measurements as proxies for the water residence time and growth rate respectively are ongoing at the Department of Environmental Sciences at the University of Basel, which will further help with the interpretation of the WC. New reconstruction of past moisture variability together with speleothem fluid inclusion temperature estimates (Affolter et al., 2019) would allow a better understanding of the central European climate variability during the Holocene.Affolter, S., H&#228;uselmann, A., Fleitmann, D., Edwards, R. L., Cheng, H., and Leuenberger, M.: Central Europe temperature constrained by speleothem fluid inclusion water isotopes over the past 14,000 years, Sci Adv, 5, eaav3809, 10.1126/sciadv.aav3809, 2019.Affolter, S., Fleitmann, D., and Leuenberger, M.: New online method for water isotope analysis of speleothem fluid inclusions using laser absorption spectroscopy (WS-CRDS), Clim Past, 10, 1291-1304, DOI 10.5194/cp-10-1291-2014, 2014.

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Multi-chemical fingerprinting of contrasted waters flowing within the unconventional Okavango Delta: evidence of an original ‘island reactor’

10.5194/egusphere-egu2020-20352 ◽

2020 ◽

Author(s):

Aline Dia ◽

Olivier Dauteuil ◽

Marc Jolivet ◽

Mélanie Davranche ◽

Martine Bouhnic-le-Coz ◽

...

Keyword(s):

Organic Matter ◽

Trace Element ◽

Water Samples ◽

Isotope Analysis ◽

Water System ◽

Strong Relationship ◽

Speciation Analysis ◽

Critical Metals ◽

Hydrological System ◽

Circumneutral Ph

The 20.000 km2 swamp of the Delta is organized into islands, flood plains and permanent and seasonal channels. Most of these islands display a surprising vegetation distribution composed of tree rings surrounding the islands and limiting an inner domain with scarce vegetation. Whereas the hydrology of the Okanvango wetlands is governed by a series of drivers such as, sedimentation, climate, tectonic and biological processes, the potential of the use of multi-chemical tracing has not been so far much investigated. The conducted study as part of a multidisciplinary project dedicated to the understanding of the functioning of the Delta, involved water samples collected both upstream and downsream the river, close to one of these islands and also recovered within the island as well. The main objective of this geochemical investigation was to better constrain the interactions prevailing in between these islands and the water chemical record. pH, conductivity (C), dissolved organic and inorganic carbon (DOC & DIC) concentrations were measured as well as those of major anion and cation and trace cation concentrations as well. Whichever the tracers are considered, two contrasted groups of samples were evidenced depending on their sampling positioning regarding the island. The samples recovered only within the island displayed pH around and over 9 and higher conductivities, whereas the other showed lower circumneutral pH values and conductivities as well. The high conductivities of the water samples fom the island also correspond to the highest DOC and DIC concentrations. The strong relationship linking the high DIC values and the high pH in the island samples records probably alkaline CO32- et HCO3- -rich waters resulting from water-rock interactions with carbonates. The marked DOC enrichment has mostly to be related to microbial or photo-degradation of plant-derived organic matter and/or hydrological condition variations promoting DOC release. Significant, Cl-, SO42-, NO2-enrichments as well as major cation ones were also evidenced in the same group of samples within the island. However, the most surprising results are sourced in the trace element fingerprinting. This latter includes huge enrichment in heavy, critical metals and metalloids as well (e.g. Cr, Pb, V, REE, U, Th or As). Beyond the only marked REE-spike, Upper Continental Crust-normalized REE patterns displayed markedly contrasted shapes exhibiting two types of waters with circumneutral pH ones with MREE-enrichment, whereas the alkaline waters evidenced a classical continuous enrichment throughout the whole series from LREE to HREE and a positive Ce anomaly. The use of such multi-tracing allowed an efficient fingerprinting of two distint types of waters to get clues to further constrain both the dynamics of such islands and the functioning of the water system. Still in progress, the study will be completed by (i) the stable isotope analysis, (ii) the modeling of the minerals possibly at equilibrium with the waters and of the organic matter-trace element interactions, (iii) the speciation analysis of some enriched elements, (iv) the comparison between water and solid samples analyses and (v) the understanding of the relations in between the concentrations and locations in the hydrological system.

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Performance assessment of a cavity ring-down laser spectrometer: achieving better precision and accuracy in the measurement of δ18O and δ2H in liquid water samples

Measurement Science and Technology ◽

10.1088/0957-0233/25/1/015801 ◽

2013 ◽

Vol 25 (1) ◽

pp. 015801 ◽

Cited By ~ 2

Author(s):

A J Prado-Pérez ◽

J Rodríguez-Arévalo ◽

M F Díaz-Teijeiro

Keyword(s):

Performance Assessment ◽

Liquid Water ◽

Water Samples ◽

Laser Spectrometer ◽

Precision And Accuracy ◽

Cavity Ring Down

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Technical note: Evaluation of a low-cost evaporation protection method for portable water samplers

Hydrology and Earth System Sciences ◽

10.5194/hess-24-5821-2020 ◽

2020 ◽

Vol 24 (12) ◽

pp. 5821-5834

Author(s):

Jana von Freyberg ◽

Julia L. A. Knapp ◽

Andrea Rücker ◽

Bjørn Studer ◽

James W. Kirchner

Keyword(s):

Water Samples ◽

Low Cost ◽

Field Tests ◽

Technical Note ◽

Water Isotopes ◽

Stable Water Isotopes ◽

Sample Collection ◽

Isotopic Signatures ◽

Protection Method ◽

Cost Efficient

Abstract. Automated field sampling of streamwater or precipitation for subsequent analysis of stable water isotopes (2H and 18O) is often conducted with off-the-shelf automated samplers. However, when water samples are stored in the field for days and weeks in open bottles inside autosamplers, their isotopic signatures can be altered by evaporative fractionation and vapor mixing. We therefore designed an evaporation protection method which modifies autosampler bottles using a syringe housing and silicone tube, and we tested whether this method reduces evaporative fractionation and vapor mixing in water samples stored for up to 24 d in 6712 full-size portable samplers (Teledyne ISCO, Lincoln, USA). Laboratory and field tests under different temperature and humidity conditions showed that water samples in bottles with evaporation protection were far less altered by evaporative fractionation and vapor mixing than samples in conventional open bottles. Our design is a cost-efficient approach to upgrade the 1 L sample bottles of the ISCO autosamplers, allowing secure water sample collection in warm and dry environments. Our design can be readily adapted (e.g., by using a different syringe size) to fit the bottles used by many other field autosamplers.

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