Journal of Soils and Sediments最新文献

{"title":"Stabilization of river dredged sediments by means of alkali activation technology","authors":"Karmen Fifer Bizjak, Lea Žibret, Mojca Božič, Boštjan Gregorc, Vilma Ducman","doi":"10.1007/s11368-024-03872-0","DOIUrl":"https://doi.org/10.1007/s11368-024-03872-0","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Purpose</h3><p>Alkali activation process has been applied to fresh river clay-rich sediments in order to increase their mechanical properties and make them suitable for soil stabilization.</p><h3 data-test=\"abstract-sub-heading\">Materials and methods</h3><p>Dredged sediments were mixed with up to 30 mass percent (ma%) of fly ash (FA) or ladle slag (LS) and after curing for 3 days at 60 °C, the bending and compressive strength have been determined. The mixtures which exhibited the highest strengths were further optimized for being used in soil stabilization. For this purpose, the sediment was stabilized with 4 ma% of quicklime (QL) and after 1 h 30 ma% of FA with alkali activator was added and cured for 1, 7 and 28 days.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The stabilized sediment has a significantely better geomechanical performance in comparison with the sediment alone. Stabilizing the dredged sediment using alkali activation technology provides high enough strengths to eventually make it suitable for anti-flood embankments.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>The results confirmed the suitability of the investigated technology for soil stabilization.</p>","PeriodicalId":17139,"journal":{"name":"Journal of Soils and Sediments","volume":"147 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142193354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Toxic potential of the soil from sites with mining waste in San Luis Potosí, Mexico","authors":"Romy Patricia Díaz-Pérez, Eleno Uriel Sanjuan-Meza, José de Jesús Mejía-Saavedra, César Arturo Ilizaliturri-Hernández, Israel Razo-Soto, Alejandra Abigail Berumen-Rodríguez, Guillermo Espinosa-Reyes","doi":"10.1007/s11368-024-03884-w","DOIUrl":"https://doi.org/10.1007/s11368-024-03884-w","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Purpose</h3><p>The aim of this study was to evaluate the toxic potential of mining residues by 1) evaluating the concentrations of heavy metals and arsenic in soil and earthworm’s samples from impacted and reference sites in Charcas and Villa de la Paz, San Luis Potosí, México; and 2) evaluating effects by laboratory bioassays and the comet assay in the earthworm <i>Eisenia andrei</i>.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>The quantification of metals in soils was carried out by the Thermo Scientific Niton XL3t Gold Serie 500 environmental analyzer for X-ray fluorescence (XRF), and in the earthworm tissue through ICP-MS. The evaluation of the genotoxic potential of soils was assessed through movility and exposure bioassays with earthworms, determining DNA damage using the comet assay at the end of the bioassays.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>In Charcas, the concentrations in soils of heavy metals from highest to lowest were: Pb &gt; Cu &gt; Mn &gt; Cd (Impacted); and Mn &gt; Pb (Reference). In Villa de la Paz, the concentrations were: As &gt; Mn &gt; Cu &gt; Pb (Impacted) and Mn &gt; Pb &gt; As (Reference). The exposure pattern to heavy metals in earthworms in Charcas was: Pb &gt; As (Impacted and Reference); and in Villa de la Paz it was: As &gt; Mn &gt; Pb &gt; Cu &gt; Cd (Impacted), y Pb &gt; As (Reference). In both mining districts, the magnitude of DNA damage in earthworms was: Impacted &gt; Reference &gt; Control.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>The results indicate that the impacted soils of both sites represent a significant source of exposure to edaphic organisms, with a notable genotoxic potential.</p>","PeriodicalId":17139,"journal":{"name":"Journal of Soils and Sediments","volume":"52 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142193355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Manure and its biochar affect activities and stoichiometry of soil extracellular enzymes in croplands","authors":"Zhengfeng An, Cole D. Gross, Xinli Chen, Edward W. Bork, Cameron N. Carlyle, Scott X. Chang","doi":"10.1007/s11368-024-03887-7","DOIUrl":"https://doi.org/10.1007/s11368-024-03887-7","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Purpose</h3><p>The influence of organic amendments on the interplay among soil extracellular enzyme activities (EEAs) and their stoichiometry (EES) and nutrient availabilities, key indicators of resource limitations for soil microbes, is poorly understood. This study aims to investigate how manure compost (hereafter “manure”) and its biochar derivative affect EEAs, EES and soil fertility.</p><h3 data-test=\"abstract-sub-heading\">Materials and methods</h3><p>We studied EEAs (BG, β-glucosidase; CBH, cellobiohydrolase; LAP, Leucine aminopeptidase; NAG, β-1,4-N-acetylglucosaminidase and AP, acid phosphatase), EES and soil fertility two years post-application of manure and biochar in central Alberta, Canada.</p><h3 data-test=\"abstract-sub-heading\">Results and discussion</h3><p>Applying manure and its biochar did not affect soil permanganate oxidable carbon (C), total phosphorus (P), and available P and nitroegn (N). Manure application increased NAG activity by 13.9% (75.9 nmol h⁻¹ g⁻¹ soil) relative to the control (66.6 nmol h⁻¹ g⁻¹ soil), whereas biochar application increased LAP activity by 22.1% (64.6 nmol h⁻¹ g⁻¹ soil) compared to the manure treatment (52.9 nmol h⁻¹ g⁻¹ soil), suggesting that manure addition caused microbial C limitation, while biochar addition led to microbial N limitation. However, both manure and biochar treatments did not affect soil NAG, CBH and AP, and enzymatic C:N, C:P, and N:P stoichiometry. Manure and biochar and their interactions with the soil ultimately affect soil physicochemical properties.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>Manure and its biochar differentially altered some soil N-cycling EEAs and C and N limitations two years after their applications.</p>","PeriodicalId":17139,"journal":{"name":"Journal of Soils and Sediments","volume":"52 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142193358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantifying pesticide-contaminated sediment sources in tropical coastal environments (Galion Bay, French West Indies)","authors":"Rémi Bizeul, Olivier Cerdan, Lai Ting Pak, Laurence Le Callonec, Sylvain Huon, Pierre Sabatier, Olivier Evrard","doi":"10.1007/s11368-024-03883-x","DOIUrl":"https://doi.org/10.1007/s11368-024-03883-x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Purpose</h3><p>Over the last 60 years, intensification of soil cultivation led to an acceleration of soil erosion and sediment delivery to river systems. In Martinique, this acceleration has led to the remobilization of a toxic insecticide (i.e. chlordecone) used in the 1970s-1990s to control banana weevil. A previous study attributed this accelerated remobilization to the application of glyphosate in plantations from the 1990s onwards. To further unambiguously confirm this link, the identification of soil erosion sources supplied to coastal sediment is essential.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>Accordingly, sediment fingerprinting tools were adapted and applied to a coastal sediment core collected in the Galion Bay. Potential source samples (n=37) were collected across the drainage area. Along with the coastal sediment core layers, these samples were analysed for potential tracing properties. The optimal suite of tracers was then selected and introduced into an un-mixing model to quantify their contributions to coastal sediment.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Results showed that subsoil (i.e. soil layer <span>(&lt; 30)</span> cm depth) and banana plantation soil surface supply the major sources of sediment (49-78% and 12-36%, respectively) to the Galion Bay and that their contributions increased since 2000, in line with chlordecone and glyphosate fluxes.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>This evolution may be attributed to the higher sensitivity of banana plantations to erosion that may have been enhanced by the glyphosate application leaving the soil uncovered with vegetation and to the contamination of both topsoil and deep soil layers (<span>(&lt; 30)</span> cm) layers with chlordecone due to its vertical transfer along the soil profile and its redistribution across hillslopes.</p>","PeriodicalId":17139,"journal":{"name":"Journal of Soils and Sediments","volume":"11 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142193370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Post-dredging monitored natural recovery of surface sediments in an urban river","authors":"Kristin Searcy Bell, Katrina Leigh, Rich Galloway, Victor S. Magar","doi":"10.1007/s11368-024-03878-8","DOIUrl":"https://doi.org/10.1007/s11368-024-03878-8","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Purpose</h3><p>Verification monitoring was performed over five years following the sediment remediation of the Buffalo River Area of Concern (AOC), New York, USA. Monitoring results were compared with surface sediment cleanup goals to determine whether natural sedimentation allowed the AOC to achieve long-term remedial goals without the placement of cover material to manage dredge residuals.</p><h3 data-test=\"abstract-sub-heading\">Material and methods</h3><p>Monitoring was conducted two years and five years following sediment remediation and included: 1) bathymetric surveys to understand sediment stability and deposition rates, and 2) the analysis of surface sediment samples for four primary chemicals of concern (COCs), including polyaromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), lead, and mercury, to compare surface sediment concentrations over time with site-specific sediment remedial goals.</p><h3 data-test=\"abstract-sub-heading\">Results and discussion</h3><p>The monitoring results demonstrated the following: 1) sedimentation is occurring, 2) a stable depositional environment is present throughout the Buffalo River AOC, and 3) measurable reductions in sediment concentrations were observed for PAHs, PCBs, lead and mercury in the newly deposited sediment. By Year 5, surface sediment chemistry results generally achieved the remedial goals throughout the Buffalo River AOC.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>Monitored natural recovery (MNR) was effective in physically isolating dredge residuals in the Buffalo River AOC, following sediment removal. This post-dredging MNR approach met the surface sediment remedial goals in most areas, resulted in a protective and cost-effective project by not requiring the placement of clean cover material in the dredge areas, and was an environmentally sustainable strategy by eliminating the need to collect, transport, and place millions of kilograms of clean quarried material in the river.</p>","PeriodicalId":17139,"journal":{"name":"Journal of Soils and Sediments","volume":"2 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141938378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Agitation dredging of silt and fine sand with Water Injection Dredging, Tiamat and Underwater Plough: a case study in the Port of Rotterdam","authors":"Sterre Neumann, Alex Kirichek, Andre van Hassent","doi":"10.1007/s11368-024-03877-9","DOIUrl":"https://doi.org/10.1007/s11368-024-03877-9","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Purpose</h3><p>Agitation dredging has gained popularity as an environmentally friendly and cost-effective method for port maintenance. One of the advantages of agitation dredging is the ability to transport sediments out of the port area using natural currents. The effect of the different agitation methods on sediment and water properties has rarely been investigated in a single pilot project. This research aims to study the effects of agitation methods in silt and sand-dominated areas that are frequently maintained.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>The effects of water injection dredging, (WID) underwater ploughing (UWP) and Tiamat on sediment properties are investigated in the Port of Rotterdam. In-situ measurements and laboratory measurements are carried out to determine changes in the bed level, the particle size distribution of the bed, the turbidity in the water column and the dispersion distance of the sediment plume due to agitation dredging.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The results of the in-situ monitoring of the agitation pilots allow a comparison of the changes in sediment and water properties before, during and after agitation dredging. The production, advantages and limitations of the tested agitation dredging methods are discussed.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>The in-situ measurements show that WID, Tiamat and UWP can be successfully used for the agitation of sediments and their removal from the silt and sand-dominated areas. The production of the tested agitation methods is higher for silty than sandy sediments. In general, the selection of the agitation equipment can be made based on environmental regulations, sediment properties and hydrodynamic conditions.</p>","PeriodicalId":17139,"journal":{"name":"Journal of Soils and Sediments","volume":"8 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141938308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inspection for the desorption effect and mechanism of petroleum from contaminated soil in surfactant solution","authors":"Meixia Gu, Xiaoshuang Yin, Xiaoning Feng, Nan Shi, Wei Zhu, Shuhai Guo, Min Li, Bo Wu, Gang Li, Xingshun Cong, Bin Lou, Fushan Wen, Dong Liu","doi":"10.1007/s11368-024-03866-y","DOIUrl":"https://doi.org/10.1007/s11368-024-03866-y","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Purpose</h3><p>In order to investigate the desorption effect and mechanism of petroleum from petroleum contaminated soil (PCS) in surfactant solution (SAA-solution).</p><h3 data-test=\"abstract-sub-heading\">Method</h3><p>In this study, the desorption effect of SAA-solution cleaning of PCS was systematically analyzed by using orthogonal experiments. In addition, the petroleum mechanism of desorption from the PCS surface was further explored by kinetic and thermodynamic studies.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The results indicated that the petroleum removal efficiency (Re) gradually decreased with the increase of PCS particle size and PCS aging time. The highest petroleum Re was 82.13% under optimum conditions. Subsequently, FT-IR and petroleum component analysis showed the petroleum light components were easily removed from PCS, while the petroleum heavy components limited the desorption of petroleum. The kinetic studies revealed that the petroleum desorption was well depicted by the pseudo-first-order kinetic model, and the desorption rate increased with the decrease of PCS particle size. Meanwhile, the petroleum desorption equilibrium was well described by the Langmuir isotherm model and proceeded by a chemical mechanism. The thermodynamic studies demonstrated that the petroleum desorption from PCS was a viable, spontaneous, and endothermic process.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>The study provided theoretical guidance to apply SAA-solution cleaning industrial PCS.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":17139,"journal":{"name":"Journal of Soils and Sediments","volume":"5 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141938307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variability of fallout radionuclides (FRNs) in river channels: implications for sediment tracing","authors":"Enrique Muñoz-Arcos, Geoffrey E. Millward, Caroline C. Clason, Richard Hartley, Claudio Bravo-Linares, William H. Blake","doi":"10.1007/s11368-024-03881-z","DOIUrl":"https://doi.org/10.1007/s11368-024-03881-z","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Purpose</h3><p>The aims of this research were to assess the sources of variability of particulate FRNs (⁷Be, ²¹⁰Pb_ex and ¹³⁷Cs) in river channels, the influence of sediment properties such as particle size distribution (PSD) and organic matter (OM) on FRN distributions, and to discuss the implications for sediment tracing in rivers.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>Suspended and channel bed sediment samples were collected in the River Avon (Devon, UK) during five strategic surveys involving a wide variation of river flows, including flood conditions. Particulate matter was analysed for ⁷Be, ²¹⁰Pb_ex and ¹³⁷Cs by gamma spectrometry, PSD by laser diffraction, and organic constituents, total organic carbon (TOC) and total nitrogen (TN) by elemental analysis.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>FRNs activity concentrations vary significantly both spatially, characterised by changes in activity concentrations within and between locations, and temporally, with changes during the storm hydrograph and between seasons. Variability was attributed to changes in sediment sources and, on some occasions, to significant correlation of activity concentrations with sediment properties. The results also highlighted the influence of changes in channel characteristics and the magnitude and frequency of floods on FRN distributions.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>In the context of sediment tracing, attention should be given to seasonal changes in riverine conditions that have the potential to affect ⁷Be and ¹³⁷Cs conservativeness. Application of FRNs in sediment fingerprinting studies should be accompanied by appropriate temporal characterisation of potential sediment sources. Finally, potential contribution of ⁷Be-depleted sediment from channel resuspension to the suspended load should also be considered.</p>","PeriodicalId":17139,"journal":{"name":"Journal of Soils and Sediments","volume":"58 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141938379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Distributions and controlling factors of soil total nitrogen and nitrogen fractions along an altitude gradient in Qinghai-Tibet Plateau","authors":"Da Meng, Xinyu Wang, Jiayi Tang, Ning Zong, Jinjing Zhang, Nianpeng He","doi":"10.1007/s11368-024-03882-y","DOIUrl":"https://doi.org/10.1007/s11368-024-03882-y","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Purpose</h3><p>Understanding spatial variations in soil nutrients and its drivers is essential for sustainable nutrient management and related environmental assessment in terrestrial ecosystems. Here, we investigated the distribution characteristics and controlling factors of soil total nitrogen (N) and N fractions along an altitude gradient in an alpine meadow of the Qinghai-Tibet Plateau.</p><h3 data-test=\"abstract-sub-heading\">Materials and methods</h3><p>Six experimental sites at altitudes 4400, 4500, 4650, 4800, 4950, and 5200 m were established on southern slope of Nyainqentanglha Mountain since 2005. Total N and N fractions were quantified and their relationships with climate, vegetation, and edaphic factors were analyzed by Pearson correlation, redundancy analysis, and structural equation modeling.</p><h3 data-test=\"abstract-sub-heading\">Results and discussion</h3><p>With increasing altitude, the contents of total N, alkali-hydrolyzable N, inorganic N fractions (ammonium N and nitrate N), and organic N fractions (acid-hydrolyzable and acid-insoluble organic N) gradually increased, reached their maximums at altitude 4800 or 4950 m, and then decreased. Soil organic carbon explained 90.5% of the variations in TN and N fractions, and soil moisture, pH, mineralogy, texture, and N hydrolyzing enzyme activity explained 8.80% of the variations in TN and N fractions. Mean annual temperature and precipitation exhibited direct and positive impact on soil organic carbon, which had positive effect on inorganic N fractions and plant aboveground biomass in sequence.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>Soil organic carbon is the most dominant factors driving the variations in TN and N fractions along the altitude gradient. Climate change can impact alpine grassland productivity by regulating soil inorganic N distribution.</p>","PeriodicalId":17139,"journal":{"name":"Journal of Soils and Sediments","volume":"307 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141938638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of Rare Earth Elements in sediments on the growth and photosynthetic efficiency of the benthic plant Myriophyllum aquaticum","authors":"Isidora Gjata, Chantal K. E. van Drimmelen, Franca Tommasi, Costantino Paciolla, Susanne Heise","doi":"10.1007/s11368-024-03867-x","DOIUrl":"https://doi.org/10.1007/s11368-024-03867-x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Purpose</h3><p>Rare Earth Elements (REEs) are becoming more present in our everyday life. With this work, we aimed to study and compare the toxic responses of the REEs lanthanum (La), cerium (Ce), neodymium (Nd), and gadolinium (Gd) to the macrophyte <i>Myriophyllum aquaticum</i>. The scope was to evaluate if these elements trigger a response on the photosynthetic system (PSII), which causes inhibition of the growth rate of the plant.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>We measured the fluorescence yield by pulse-amplitude-modulated chlorophyll fluorometer (PAM) which enabled simultaneous high-resolution fluorescence measurements of the whorls daily for the whole duration of the test (10 days) and fresh weight change (FWC) at the end of the test.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>Our findings suggest that La significantly decreased FWC at the highest concentration (500 mg kg⁻¹) but did not cause any significant effects on the fluorescence yield. Ce and Nd significantly decreased the chlorophyll fluorescence between days 2 and 4, and after that the yield was not significantly different with respect to the control. Of all the REEs tested in this study, Gd showed the most negative effect as the whorls exhibited chlorosis/necrosis and the fresh weight at the end of the test decreased significantly compared to the same plant at day 0. The yield of <i>M. aquaticum</i> showed time-dependent effects for Gd at the highest concentration.</p><h3 data-test=\"abstract-sub-heading\">Conclusion</h3><p>Gd was the most toxic REE, strongly affecting both the yield and FWC. The measurement of the fluorescence yield of the PSII is a useful effect observation and of high environmental importance. The difference in sensitivity between the functional and growth endpoints may give hints about the mode of action of contaminants to aquatic plants.</p>","PeriodicalId":17139,"journal":{"name":"Journal of Soils and Sediments","volume":"52 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141883844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}