Aquatic Geochemistry最新文献

{"title":"Climate Change-Induced Changes in the Chemistry of a High-Altitude Mountain Lake in the Central Alps","authors":"Sandra M. Steingruber,&nbsp;Stefano M. Bernasconi,&nbsp;Giorgio Valenti","doi":"10.1007/s10498-020-09388-6","DOIUrl":"10.1007/s10498-020-09388-6","url":null,"abstract":"<div><p>Mountains are among the most sensitive ecosystems to climate change, and one of the most evident signs of climate-related effect is the continuous net loss of ice from the cryosphere. Several studies showed that meltwater from glaciated and perennially frozen areas can profoundly affect alpine aquatic ecosystems. Here, we present the impressive temporal increase in solutes in Lake Leit, a mountain lake in the Central Alps that is impacted by an active rock glacier. During the last 30 years, concentrations of sulfate and base cations increased by factors of 4 and 3, respectively. Atmospheric deposition, the only catchment external source, could be excluded as possible cause. The inlets have sulfate and base cations concentrations that were up to double the concentrations of the lake outlet confirming the presence of catchment internal sources. The highest concentrations were measured in the springs at the bottom of the rock glacier. Ground surface temperatures of the rock glacier indicated a high probability of permafrost occurrence, while the annual mean air temperature after the mid-1980s showed continuously positive deviations from the long-term average values (period 1961–1990) with increasing values after 2010. δ³⁴S of sulfate in the inlets and the outflow indicated that sulfate in Lake Leit mainly derived from dissolution of gypsum/anhydrite even if its presence is not confirmed by the Geologic Atlas of Switzerland. Because of these results, we postulate the presence of subsurface traces of sulfate-bearing evaporites, probably associated with Triassic metasediments. These deposits are very common in the closer surroundings. We further hypothesize that the thawing of permafrost affects the flow path of water enabling its contact with fresh highly weatherable minerals increasing the overall weathering rate and shifting the relative ionic composition in the discharge toward the ions that originate from the most soluble minerals. This study shows that increased permafrost thawing in the future can influence water quality in high-alpine settings.</p></div>","PeriodicalId":8102,"journal":{"name":"Aquatic Geochemistry","volume":"27 2","pages":"105 - 126"},"PeriodicalIF":1.6,"publicationDate":"2020-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s10498-020-09388-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4711122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction to: Ultra-trace Element Characterization of the Central Ottawa River Basin Using a Rapid, Flexible, and Low-Volume ICP-MS Method","authors":"Michael G. Babechuk,&nbsp;Edel M. O’Sullivan,&nbsp;Cora A. McKenna,&nbsp;Carolina Rosca,&nbsp;Thomas F. Nägler,&nbsp;Ronny Schoenberg,&nbsp;Balz S. Kamber","doi":"10.1007/s10498-020-09382-y","DOIUrl":"https://doi.org/10.1007/s10498-020-09382-y","url":null,"abstract":"","PeriodicalId":8102,"journal":{"name":"Aquatic Geochemistry","volume":"26 4","pages":"455 - 455"},"PeriodicalIF":1.6,"publicationDate":"2020-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s10498-020-09382-y","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5084414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Bioirrigation and Salinity on Arsenic Distributions in Ferruginous Concretions from Salt Marsh Sediment Cores (Southern Brazil)","authors":"Larissa Costa,&nbsp;Nicolai Mirlean,&nbsp;Guilherme Quintana,&nbsp;Segun Adebayo,&nbsp;Karen Johannesson","doi":"10.1007/s10498-020-09387-7","DOIUrl":"10.1007/s10498-020-09387-7","url":null,"abstract":"<div><p>Arsenic (As), iron (Fe), and manganese (Mn) contents were measured in sediment nodules and associated pore waters obtained from sediment cores collected from a salt marsh on Pólvora Island (southern Brazil). Sediment cores were obtained when brackish water dominated the estuary, at two different environments: an unvegetated mudflat colonized by crabs (<i>Neohelice granulata</i>), and a low intertidal stand vegetated by <i>Spartina alterniflora</i>. We determined the percentage of nodules in each depth interval of the cores, along with redox potential, and As, Fe, and Mn contents of the nodules. The mineralogy of the nodules was investigated, and results showed they are mainly composed by quartz, phyllosilicates, and amorphous Fe–Mn oxides/oxyhydroxides. Pore water results showed that bioturbation by local crabs supports oxygen penetration to depths of ca. 25 cm below the salt marsh surface, with lower Fe contents in pore water associated with the brackish period. However, <i>S. alterniflora</i> growth appears to have a greater impact on sediment geochemistry of Fe, Mn, and possibly As due to sulfate reduction and the associated decrease in pore water pH. Higher Fe concentrations were observed in the pore waters during the period of brackish water dominance, which also corresponded to the <i>S. alterniflora</i> growth season. The study demonstrates that differences in geochemical conditions (e.g., Fe content) that can develop in salt marsh sediments owing to different types of bioirrigation processes (i.e., bioirrigation driven by crabs versus that related to the growth of <i>S. alterniflora</i>) play important roles in the biogeochemical cycling of As.</p></div>","PeriodicalId":8102,"journal":{"name":"Aquatic Geochemistry","volume":"27 2","pages":"79 - 103"},"PeriodicalIF":1.6,"publicationDate":"2020-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s10498-020-09387-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4682946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction to: Colloidal Organic Matter and Metal(loid)s in Coastal Waters (Gulf of Trieste, Northern Adriatic Sea)","authors":"Katja Klun,&nbsp;Ingrid Falnoga,&nbsp;Darja Mazej,&nbsp;Primož Šket,&nbsp;Jadran Faganeli","doi":"10.1007/s10498-020-09380-0","DOIUrl":"https://doi.org/10.1007/s10498-020-09380-0","url":null,"abstract":"","PeriodicalId":8102,"journal":{"name":"Aquatic Geochemistry","volume":"26 3","pages":"293 - 309"},"PeriodicalIF":1.6,"publicationDate":"2020-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s10498-020-09380-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4423222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction to: The Effect of Bacterial Sulfate Reduction Inhibition on the Production and Stable Isotopic Composition of Methane in Hypersaline Environments","authors":"Cheryl A. Kelley,&nbsp;Brad M. Bebout,&nbsp;Jeffrey P. Chanton,&nbsp;Angela M. Detweiler,&nbsp;Adrienne Frisbee,&nbsp;Brooke E. Nicholson,&nbsp;Jennifer Poole,&nbsp;Amanda Tazaz,&nbsp;Claire Winkler","doi":"10.1007/s10498-020-09381-z","DOIUrl":"https://doi.org/10.1007/s10498-020-09381-z","url":null,"abstract":"","PeriodicalId":8102,"journal":{"name":"Aquatic Geochemistry","volume":"26 3","pages":"311 - 325"},"PeriodicalIF":1.6,"publicationDate":"2020-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s10498-020-09381-z","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4423239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stable Carbon Isotopes δ13C as a Proxy for Characterizing Carbon Sources and Processes in a Small Tropical Headwater Catchment: Nsimi, Cameroon","authors":"Gustave Raoul Nkoue Ndondo,&nbsp;J.-L. Probst,&nbsp;J. Ndjama,&nbsp;Jules Remy Ndam Ngoupayou,&nbsp;J.-L. Boeglin,&nbsp;G. E. Takem,&nbsp;F. Brunet,&nbsp;J. Mortatti,&nbsp;F. Gauthier-Lafaye,&nbsp;J.-J. Braun,&nbsp;G. E. Ekodeck","doi":"10.1007/s10498-020-09386-8","DOIUrl":"https://doi.org/10.1007/s10498-020-09386-8","url":null,"abstract":"<p>Stream carbon fluxes are one of the major components in the global C cycle, yet the discrimination of the various sources of stream carbon remains to a large extent unclear and less is known about the biogeochemical transformations that accompany the transfer of C from soils to streams. Here, we used patterns in stream water and groundwater δ¹³C values in a small forested tropical headwater catchment to investigate the source and contribution from the soil carbon pools to stream organic and inorganic carbon behavior over seasonal scales. Stream organic carbon (DOC and POC) comes mainly from the upper rich soil organic carbon horizons and derived from total organic carbon (TOC) of biogenic source. The isotopic compositions δ¹³C_TOC, δ¹³C_DOC and δ¹³C_POC of these carbon species were very close (??30‰ to ??26‰) and typical of the forested C3 vegetation. The relationship observed between DOC and log pCO₂ and δ¹³C_DIC indicated that besides the considerable CO₂ evasion that occurs as DIC is transported from soils to streams, there were also other processes affecting the stream DIC pool. In-stream mineralization of DOC and mixing of atmospheric carbon had a significant influence on the δ¹³C_DIC values. These processes which varied seasonally with hydrological changes represent the main control on DOC and DIC cycling in the wet tropical milieu. The rapid turnover of carbon on hillside soils, the transformation of TOC to DOC in wetland soils and further mineralization of stream DOC to DIC favor the evasion of C, making the zone a source of carbon to the atmosphere.</p>","PeriodicalId":8102,"journal":{"name":"Aquatic Geochemistry","volume":"27 1","pages":"1 - 30"},"PeriodicalIF":1.6,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s10498-020-09386-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4031170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kinetics of Thiocyanate Formation by Reaction of Cyanide with Tetrathionate","authors":"Irina Kurashova,&nbsp;Alexey Kamyshny Jr.","doi":"10.1007/s10498-020-09385-9","DOIUrl":"https://doi.org/10.1007/s10498-020-09385-9","url":null,"abstract":"<p>In aquatic systems a reaction between tetrathionate and cyanide results in the formation of thiocyanate. We have studied kinetics of the reactions of tetrathionate with free cyanide and two cyanide complexes, hexacyanoferrate(II) and hexacyanoferrate(III), at the environmentally relevant conditions. For the reaction between tetrathionate and free cyanide, the rate constant and the activation energy, but not the reaction order, strongly depend on pH. Our observations allow to propose the following pathways of thiocyanate formation by the reactions of free cyanide with tetrathionate: (1) tetrathionate reacts relatively slow with hydrogen cyanide at acidic and neutral conditions; and (2) tetrathionate reacts relatively fast with cyanide anion under highly alkaline conditions. Depending on environmental conditions, the half-lives of the reaction between free cyanide and tetrathionate will be in the ranges of hours to several years. Reactions of tetrathionate with hexacyanoferrate(II) and hexacyanoferrate(III) have no environmental significance as they are slower than the decomposition of tetrathionate. Strategy for improvement of analytical protocols for analysis of tetrathionate and cyanide is proposed based on the detected kinetics parameters.</p>","PeriodicalId":8102,"journal":{"name":"Aquatic Geochemistry","volume":"27 1","pages":"63 - 77"},"PeriodicalIF":1.6,"publicationDate":"2020-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s10498-020-09385-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5120758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrogeochemical Conditions in Groundwater Systems with Various Geomorphological Units in Kulonprogo Regency, Java Island, Indonesia","authors":"Reinaldy Pratama Poetra,&nbsp;Tjahyo Nugroho Adji,&nbsp;Langgeng Wahyu Santosa,&nbsp;Nurul Khakhim","doi":"10.1007/s10498-020-09384-w","DOIUrl":"https://doi.org/10.1007/s10498-020-09384-w","url":null,"abstract":"<p>Geomorphological (landform) aspects have long been known to control groundwater conditions in an area. Thus, combining the hydrogeological and geomorphological aspects (lithology, genesis, and morphology) becomes a prospective approach for understanding and delineating the hydrogeochemical processes in an area. The idea is then applied in Kulonprogo, Java, Indonesia, that consists of several landforms with minimum anthropogenic influence, in order to identify and quantify the hydrogeochemical processes that are responsible for hydrogeochemical facies changes in each landform. The groundwater facies based on Kurlov classification in each landform are strongly influenced by the water–rock interaction process as it presented in the Gibbs curve. The magnitude of saturation indices and mass transfer is also diverse that caused a distinction of hydrogeochemical facies and processes in each landform. For instance, the evolution of groundwater in the denudational hill to the fluviomarine plain occurs from Ca–HCO₃ to Na?+?K–Ca–HCO₃. The analysis of Durov diagram and inverse modeling—using PHREEQ—reveals that the hydrogeochemical processes that occur in most of the landform are ion exchange, weathering or dissolution, and precipitation. Further, oxidation–reduction and mixing only occur in few landforms. The further investigation from mass balance calculation that constructs from inverse modeling reveals some interesting findings and hypotheses, such as the construction of gypsum probably found in the deeper layer on swale as a result of pyrite dissolution of 1.074?×?10^?3 mmol, and it is responsible in escalating Ca²⁺ and SO₄^2?. Another finding is that although the calcite mineral mostly related to the past-marine environment, such as in the east denudational hill, the calcite in the west part is formed as a breakdown of 3.225?×?10^?3 mmol anorthite.</p>","PeriodicalId":8102,"journal":{"name":"Aquatic Geochemistry","volume":"26 4","pages":"421 - 454"},"PeriodicalIF":1.6,"publicationDate":"2020-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s10498-020-09384-w","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4937276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of CO2 on Water Chemistry and Bacterial Community Structure and Diversity: An Experimental Study in the Laboratory","authors":"Hongying Zhang,&nbsp;Zongjun Gao,&nbsp;Mengjie Shi,&nbsp;Shaoyan Fang","doi":"10.1007/s10498-020-09383-x","DOIUrl":"https://doi.org/10.1007/s10498-020-09383-x","url":null,"abstract":"<p>As the second largest carbon pool, soil has a high CO₂ content, and it has an important impact on water–rock interactions and the bacterial community structure and diversity in soils. In this paper, three sets of laboratory simulation experiments under six levels of partial pressure CO₂ (pCO₂) conditions were used to analyze and study the CO₂–water–rock interactions and the bacterial community structure and diversity changes in soil under normal temperature and pressure. <i>Results</i> (1) The change of pCO₂ had an obvious influence on the chemical components. The dissolution of CO₂ led to the dissolution of dolomite and calcite, which increased the concentrations of HCO₃^?, Ca²⁺, and Mg²⁺ significantly. (2) The influence of pCO₂ on the bacterial community structure and diversity was different, and the bacterial community structure became more complex and diverse with the extension of the experiment time. In the experiments, Proteobacteria and Firmicutes were the main dominant phyla, and Gammaproteobacteria and Bacilli were the main dominant classes. The abundance of Bacteroidetes and Bacteroidia was significantly increased with the increasing pCO₂. (3) pH had a significant influence on the bacterial community structure during the experiments, and the influences of different chemical components, such as HCO₃^?, Ca²⁺, Mg²⁺, total dissolved solids (TDS), and K⁺, on the abundance of different bacterial species were significantly different. This work can provide a theoretical basis for the technology of bacterial–geological storage of CO₂, and it has important significance for the protection of the groundwater environment and the soil ecosystem.</p>","PeriodicalId":8102,"journal":{"name":"Aquatic Geochemistry","volume":"26 4","pages":"401 - 419"},"PeriodicalIF":1.6,"publicationDate":"2020-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s10498-020-09383-x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4868501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Introduction to “Microbial Biogeochemistry: A Special Issue of Aquatic Geochemistry Honoring Mark Hines”","authors":"W. Berry Lyons,&nbsp;David J. Burdige","doi":"10.1007/s10498-020-09379-7","DOIUrl":"https://doi.org/10.1007/s10498-020-09379-7","url":null,"abstract":"","PeriodicalId":8102,"journal":{"name":"Aquatic Geochemistry","volume":"26 3","pages":"179 - 181"},"PeriodicalIF":1.6,"publicationDate":"2020-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1007/s10498-020-09379-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4870652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}