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27 results for “sediment properties”
Organic Matter, Geochemical, Visible Spectrocolorimetric Properties, Radiocesium Properties, and Grain Size of Potential Source Material, Target Sediment Core Layers and Laboratory Mixtures for Conducting Sediment Fingerprinting Approaches in the Mano Dam Reservoir (Hayama Lake) Catchment, Fukushima Prefecture, Japan
<p>The current dataset was compiled to study sediment fingerprintings practices, i.e tracer selection and contribution modelling. Organic matter, elemental geochemistry, visible difuse spectrocolorimetric properties, radiocesium properties, and grain size were analysed were analysed in potential source material that may supply sediment to coastal rivers, here the upper part of the Mano river, draining the main Fukushima radioactive pollution plume (Japan). Four potential soil source materials (<em>n</em> = 68) were considered: undecontaminated cropland (<em>n</em> = 24), as non-decontaminated soil before the application of local decontamination policies, remediated cropland (<em>n</em> = 10), as decontaminated soil after the application of local decontamination policies, forest soils (n = 24) and subsurface material originating from channel bank collapse or landslides (<em>n</em> = 10; referred to as subsoil). A sediment core was collected in the Mano Dam lake (Hayama lake) on the 6th June 2021 and was sectionned into 1-cm layers (<em>n</em> = 38). Laboratory mixtures (<em>n</em> = 27) were made to assess different contribution levels from the sources.</p> <p>The current dataset comprises four .csv files including data and metadata information and their respective descriptions of variables. The data set is composed of soil samples, sediment core layer and laboratory mixtures. Laboratory mixtures were prepared to provide a dataset to calibrate/validate un-mixing models implemented to address this research question and analysed in the same conditions and using the same equipment as the source/target material.</p> <p>Recommended encoding format: <strong>latin1</strong></p>
Experimental manipulation of predatory crab species identity (Panopeus obesus vs. Eurytium limosum) and size-structure and assessment of effects on invertebrate densities, sediment properties and plant biomass.
Predatory mud crabs (Panopeus obesus and Eurytium limosum) are two of the main resident infaunal predators in southeastern US salt marshes. Little is known, however, about their effects on important prey species, or their influences on sediment or plant properties. These influences are likely to be dependent on the identity of species and the size-stucture of the population. We therefore manipulated the species identity (Panopeus or Eurtium) and size-structure. The size-structure treatrment had four levels: small [9 individuals, each 18-22mm carapace diameter], medium [6 ind. 24 -28mm], large [3 ind. 32-36mm], mixed (3 small, 2 medium, 1 large, all within same cage). The numbers of crabs in each size-structure treatment were chosen to capture natural size-abundance relationships. The treatments were maintained in experimental cages (70 x 70 x 100 cm, length, width, height) in the mid-Spartina zone at Dean Creek, Sapelo Island, GA. We maintained the treatments over 4 months (July - October 2010), before assessing impacts on prey densitities (mud fiddler crabs, ribbed mussels and marsh periwinkles), and ecosystem properties (aboveground plant biomass, sediment redox potential, sediment water content).
Sediment Properties Drive Spatial Variability of Potential Methane Production and Oxidation in Small Streams
<ul> <li>This dataset contains 20 data tables (Fig.2.csv, Fig.3.csv, data_PLS_stream-main-stem.csv, Fig.4_a.csv, data_PLS_subcatch.-stream-sect.csv, Fig.4_b.csv, Fig.5.csv, Fig.S1.csv, Fig.S2.csv, Fig.S3.csv, Fig.S4.csv, Fig.S5_a.csv, Fig.S5_b.csv, Fig.S6_a.csv, Fig.S6_b.csv, Fig.S6_c.csv, Fig.S6_d.csv, TableS1_data-adjustment.csv, TableS1_lit-data.csv, PMO_surface-water.csv), we separated our data tables in the respective figures/analyses presented in our paper</li> <li>We added the units to each column title of each respective data table</li> <li>Please see "Metadata.pdf" and our paper (same title as the dataset) for more information</li> </ul> <p> </p>
Bathymetry, sediment thickness, and geotechnical-geophysical properties of sediments of Lake Seracchi in Rutor proglacial area
<p>This dataset contains the data of a geophysical-geotechnical investigation of Lake Seracchi (L4) of the Rutor basin, Aosta Valley, Italy, The fieldwork was mainly carried out in 10-11 July 2021.</p> <p>The data are:</p> <p>.tif ready-to-use maps of the bathymetry and the sediment thickness.</p> <p>Time Domain Reflectometry (TDR) data of electrical permittivity and conductivity of the lake sediments</p> <p>Geotechnical analyses, such as Grain Size Distribution and Atterberg's Limits, performed on the lake sediments.</p> <p>The details are reported in the README .txt file.</p> <p> </p>
Biogeochemical rate data and sediment properties of samples used for a controlled flow through experiment testing the effect of nitrate on organic matter decomposition, PIE LTER, Plum Island Sound estuary, Massachusetts.
In this dataset, we used a controlled flow-through reactor (FTR) experiment to test the role of nitrate as an electron acceptor, and its effect on organic matter decomposition and the associated microbial community in salt marsh sediments. Organic matter decomposition significantly increased in response to nitrate, even at sediment depths typically considered resistant to decomposition. The use of isotope tracers suggests this pattern was largely driven by stimulated denitrification. Nitrate addition also significantly altered the microbial community and decreased alpha diversity, selecting for taxa belonging to groups known to reduce nitrate and oxidize more complex forms of organic matter. Fourier Transform-Infrared Spectroscopy further supported these results, suggesting that nitrate facilitated decomposition of complex organic matter compounds into more bioavailable forms. Taken together, these results suggest the existence of organic matter pools that only become accessible with nitrate and would otherwise remain stabilized in the sediment. The existence of such pools could have important implications for carbon storage, since greater decomposition rates as N loading increases may result in less overall burial of organic-rich sediment. Given the extent of nitrogen loading along our coastlines, it is imperative that we better understand the resilience of salt marsh systems to nutrient enrichment, especially if we hope to rely on salt marshes, and other blue carbon systems, for long-term carbon storage.
The Influence of Diatoms on Hydromechanical Properties of Marine Sediments
<p>Each tab represents the data necessary to re create the graphs in the associated paper "The Influence of Diatoms on Hydromechanical Properties of Marine Sediments". The tabs are in the same order chronoligically as the graphs in the paper.</p>
Magnetic and sedimentologic properties of siliciclastic cave sediments from the Muierilor Cave (Romania)
<p>Rock-magnetic and sedimentologic data of the siliciclastic sediments from the Muierii Cave (Southern Carpathians, Romania). These data were published by Mirea et al. (2021), Last deglaciation flooding events in the Southern Carpathians as revealed<br> by the study of cave deposits from Muierilor Cave, Romania, Palaeogeography, Palaeoclimatology, Palaeoecology, 562,110084 (https://doi.org/10.1016/j.palaeo.2020.110084).</p>
Magnetic properties of siliciclastic sediments from the Zăton Lake
<p>Magnetic properties of siliciclastic sediments from the Zăton Lake ((Mehedinţi Plateau, South Carpathians, Romania; 44.972782° N, 22.75433° E, 343 m ).: paleomagnetic directions, magnetic susceptibility measured at two frequencies, anisotropy of magnetic susceptibility.</p>
Magnetic and sedimentological properties of siliciclastic cave sediments from the Peștera cu Oase Cave
<p>Magnetic and sedimentological properties of siliciclastic cave sediments from the Peștera cu Oase Cave (South Carpathians, Romania: 45.030009° N, 21.835320° E, 617 m). Further details can be found in Panaiotu et al. (2013).</p>
Radionuclide, organic matter, geochemical and colorimetric properties of potential source material and target sediment for conducing sediment fingerprinting approaches in the Dzoumogné reservoir, Mayotte Island, France
<p>The current dataset was compiled to study sediment fingerprintings practices, i.e tracer selection and contribution modelling. Colorimetric properties analysed with a portable diffuse reflectance spectrophotometer (Konica Minolta CM-700d) and geochemical contents obtained with an energy dispersive X-ray fluorescence spectrometer (ED-XRF Epsilon 4), organic matter and stable isotopes were analysed by EA-IRMS and radionuclides using coaxial N- and P- type HPGe detectors (Canberra/Ortec). These properties were analysed in potential source material that may supply sediment to the Dzoumogné reservoir, Mayotte island, France. Three potential soil source materials (n = 57) were considered: cropland (n = 29), forest (n = 13) and subsurface material originating from channel bank collapse, landslides, badlands (n = 16). A sediment core was collected in the Dzoumogné reservoir (Target) on the 8th October 2021 and 20 layers were sampled.</p><p>The current dataset comprises two Excel files including the metadata description and the data itself.</p>
CoUDlabs_WP8_T812_IKT_001 Permeable pavement clogging assessment using sediments with different properties
<p>This dataset includes raw and processed data from a series of laboratory tests that were conducted to develop and assess new and existing methods for analysing pavement performance and to gain insights into how these systems operate during their lifetime. The test method and specification used are based on the standards set by the Deutsches Institut für Bautechnik (DIBt), the German Institute for Construction Engineering. The tests are focused on determining hydraulic permeability and material retention of a cobblestone pavement with permeable joints under different sources of contamination, such as plastic dust and particulate sediments with different granulometries. The work is part of a joint research line between IKT and UDC towards the development of standardised methods to assess the long-term behaviour of different permeable pavement types during their lifetime. Data may be used to increase knowledge on permeable pavement clogging, allowing for developing improved design and maintenance strategies to optimise the long-term performance of permeable pavements.</p><p>This dataset is a result from the Joint Research Activity 3 (WP8, Improving Resilience and Sustainability in Urban Drainage solutions), Task 8.1.2. (Development of Scalable Measurement Protocols to Assess the Pollutant Retention and Release potentials of Urban Drainage Structures) within Co-UDlabs project, funded under the European Union's Horizon 2020 research and innovation program under grant agreement No 101008626. </p>
Organic matter properties of the Rincon del Bonete and Palmar sediment cores (Uruguay)
<p>This database presents the results of organic matter measurements performed on cores collected in the Rincon del Bonete and Palmar reservoirs (Uruguay)</p> <p>IRMS analyses were conducted on dry sediment for determining organic matter properties, including elemental concentrations (Total Organic Carbon – TOC, Total Nitrogen –TN, both expressed in %) and stable isotope measurements (δ<sup>13</sup>C and δ<sup>15</sup>N, expressed in ‰). These measurements were performed with a continuous flow Elementar® VarioPyro cube analyzer coupled to a Micromass® Isoprime IRMS available at the Alysés platform of the Institut de Recherche pour le Développement (Bondy, France)</p> <p>Sediment cores were collected on 2019/09/01 in the Palmar (PA-02) and Rincon del Bonete (RDB-01) reservoirs (Uruguay).</p> <p>Corresponding authors: anthony.foucher@lsce.ipsl.fr</p>
Data from: Burrowing crab effects on the properties and functions of coastal soft sediments
<p>Burrowing ecosystem engineers, such as termites, crabs, marmots, and foxes, can profoundly affect the biological structure and ecosystem functions of their environments. However, the relative importance of burrowing engineers on sediments are challenging to predict and are expected to be influenced by engineer density, engineer functional traits (e.g., burrow morphology), and environmental conditions (e.g., geomorphology, vegetation presence). To develop robust hypotheses predicting the impacts of burrowing ecosystem engineers, we conducted a systematic meta-analysis evaluating the effects of burrowing crabs on sediment properties, nutrient stocks, and ecosystem functions in coastal soft-sediment habitats (e.g., salt marshes, mangrove forests, tidal flats). The data set includes 1422 effect size calculations for the effects of burrowing crabs on sediments collected from 59 total manuscripts. The data suggest that burrowing crabs rework and oxygenate sediments and accelerate rates of nutrient cycling (i.e., nitrification and CO<sub>2</sub> flux). However, the magnitude and direction of burrowing crab effects depend on burrowing crab superfamily, the presence of vegetation, and their interaction. Crab burrow density does not consistently predict burrowing engineer effects on sediments. </p>
Effects of the Invasive Freshwater Mussel Limnoperna fortunei on Sediment Properties and Accumulation Rates
<p>Environmental data and results of an experiment conducted in the vicinity of the Río de la Plata Estuary (Argentina), aimed at assessing the influence of the invasive mussel <em>Limnoperna fortunei</em> on sediment properties and accumulation rates. In the experiment, eighteen 20 L flow-through experimental units with and without mussels were used monitoring where changes in the mass and characteristics of the sediments accumulated throughout a yearly cycle in monthly, biannual and annual intervals.</p>
Measured properties in soil samples and marine sediment collected in Galion Bay (Martinique, France) in order to trace erosion sources in insular tropical catchments
<p>This dataset was compiled in order to select the optimal suite of tracers and identify and quantify the main sources of sediment deposited in Galion Bay and associated chlordecone transfers since the 1960s. It includes measured properties for potential sources collected across the Galion catchment (Martinique, France) and along a sediment core sampled in Galion Bay (GAL17-04, N°IGSN TOAE0000000573). Associated with this dataset, metadata are integrated for sources and targets registered using International Geological Sample Numbers (IGSN).</p>
Magnetic properties of siliciclastic cave sediments from the Ciur Izbuc Cave
<p>Magnetic properties of siliciclastic cave sediments from the Ciur Izbuc Cave (Apuseni Mts., Romania: 46.85171° N, 22.40014° E, 540 m). Further details can be found in Moldovan et al. (2016), Fossil invertebrates records in cave sediments and paleoenvironmental assessments: a study of four cave sites from Romanian Carpathians, Biogeosciences, 13, 483-487, https://doi.org/10.5194/bg-13-483-2016.</p>
Magnetic properties of siliciclastic cave sediments from the Leșu Cave
<p>Magnetic properties of siliciclastic cave sediments from the Leșu Cave (Peștera cu Apă din valea Leșu) (Apuseni Mts., Romania: 46.824332° N, 22.556533° E, 721 m). Further details can be found in Moldovan et al. (2016), Fossil invertebrates records in cave sediments and paleoenvironmental assessments: a study of four cave sites from Romanian Carpathians, Biogeosciences, 13, 483-487, https://doi.org/10.5194/bg-13-483-2016.</p>
Data from: Burrowing crab effects on the properties and functions of coastal soft sediments
Open the record for dataset details and reuse information.
Description of suspended sediment and soil samples database: measured properties associated metadata
<p>From the perspective of open science, this dataset includes data and metadata of soil and suspended sediment samples collected across three catchments in Martinique (French West Indies) : Galion river catchment, Lézarde river catchment and Salée river catchment. During one year (June 2022 - July 2023), suspended sediment samplers were installed in the three river networks. In order to determine the signature of the potential erosion sources, soil samples were collected across the three catchments. In order to quantify suspended sediment source contributions and chlordecone contamination of suspended matter transiting in river, a set of different properties were measured in soil and suspended sediment samples: radionuclide activities, carbon and nitrogen isotopes, elemental geochemistry, visible colorimetry, chlordecone and its degradation products concentrations</p>
Data Set S1. Microplastic properties and Data Set S2. Sediment grain size
<p>The data for microplastic properties (including abundance, shape, colour, polymer type and size) and sediment grain size (including the grain size and the content of clay, silt and sand) in Core CCYY1.</p>
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