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7 results for “sediment release”
Organic and inorganic data for soil cores from Brazil and Florida Bay seagrasses to support Howard et al 2018, CO2 released by carbonate sediment production in some coastal areas may offset the benefits of seagrass “Blue Carbon” storage, Limnology and Oceanography, DOI: 10.1002/lno.10621
Using piston corers, soils from Florida Bay and Brazilian seagrass meadows were collected to complete organic and inorganic carbon inventories for the top 1 m of soil. Instrumental analyses and loss on ignition at 500C were used to measure C content of downcore slices.
Data from: Worms and submersed macrophytes reduce methane release and increase nutrient removal in organic sediments
<p>We investigated how the co-presence of macrophytes and macroinvertebrates in organic substrates lowers methane emissions and nutrient transport, due to radial oxygen loss and bioirrigation. Laboratory incubations were performed to measure ebullitive methane fluxes and dissolved gas and nutrient fluxes from sediments in presence of macrophytes and macrofauna.</p>
Effects of Chlorella vulgaris on P release from ferric phosphate sediment by consecutive cultivation
Iron phosphate (Fe-P), the active compound is part of the main storage paths of phosphorus, especially in P-pollution environment. The re-release of Fe-P is a danger sign during microalgae remediation. In this work, pre-incubated Chlorella vulgaris is cultured in BG-11 culture medium with different amounts of quantifying Fe-P. The effects of Fe-P re-release on biomass, flocculation and removal of PO43- are investigated. The results indicated that Chlorella vulgaris can promote the dissolution and release of Fe-P when the pH is 7, the release amount of Fe-P (Q) in 200mL water reaches 0.055-0.45mg d-1 under the Chlorella vulgaris concentration of 5.6×105-8×105cell mL-1. Meanwhile, the growth of Chlorella vulgaris will be inhibited due to flocculation behavior of Fe3+ in the release stage, this goes hand in hand with the specific growth rate of 0.3-0.4d-1 and below 30% phosphorus removal rate. However, this process in the long run means a favorable transformation that Fe-P becomes a bioavailable phosphorus as a resource under the action of Chlorella vulgaris. Microalgae outbreaks may also be triggered by persistent interactions between Fe-P and Chlorella vulgaris. The study provides an important reference for the application of Chlorella vulgaris in a Fe-P rich environment.
Dataset accompanying the publication: Reservoir mud releasing may suboptimize fluvial sand supply to coastal sediment budget: Modeling the impact of Shihmen Reservoir case on Tamsui River estuary
<p>Delft3D model input and output files for scenario simulations (Scenario 1, Scenario 2, and Scenario 3)</p>
Effects of Chlorella vulgaris on P release from ferric phosphate sediment by consecutive cultivation
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Data from: Worms and submersed macrophytes reduce methane release and increase nutrient removal in organic sediments
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Data from: Direct contribution of invertebrate holobionts to methane release from coastal sediments
<p>In this study, we incubated 103 animals specimens equivalent to 19 macrofaunal species to quantify holobiont-associated methane (CH<sub>4</sub>) fluxes and metabolic processes [oxygen (O<sub>2</sub>) - respiration and ammonium (NH<sub>4</sub><sup>+</sup>) - excretion rates]. The specific goals were to quantify holobionts CH<sub>4</sub> production/uptake and to establish correlations between CH<sub>4</sub> fluxes and environmental factors (e.g., salinity).</p> <p>Invertebrates were collected in 4 coastal systems and incubated in 22 mL glass microcosms filled with 0.22 µm twice-filtered <em>in situ</em> water. Individual and Mass-standardized CH<sub>4</sub> Production Rates (IPR and MPR, respectively), O<sub>2</sub> Respiration Rates (IRR and MRR) and NH<sub>4</sub><sup>+ </sup>Excretion Rates (IER and MER) were measured in 103 animals’ incubations.</p> <p>1. IRR were calculated from linear regression analysis of the solute (O<sub>2</sub>) versus time equation: </p> <p> <span class="math-tex">\(IRR=(Reg.Slope × V)/N\)</span></p> <p><em> where IRR (µmol O<sub>2</sub> ind.<sup>−1</sup> day<sup>−1</sup>) is the respiration of the chemical species O<sub>2</sub>; Reg.Slope is the slope of the regression (µmol O<sub>2</sub> L<sup>−1</sup> day<sup>−1</sup>); V (L) is the water volume in the glass microcosm; N is the number of incubated animals per microcosm.</em></p> <p>2. IER and IPR were calculated from the difference in concentrations (NH<sub>4</sub><sup>+</sup> and CH<sub>4</sub>) in the water using the equation:</p> <p> <span class="math-tex">\(IER and IPR = ((C_f-C_i )×V)/(N×t)\)</span></p> <p><em> where IER and IPR (µmol ind.<sup>−1</sup> day<sup>−1</sup> and nmol ind.<sup>−1</sup> day<sup>−1</sup>) are the excretion or production of the chemical species (NH<sub>4</sub><sup>+</sup> or CH<sub>4</sub>); C<sub>f</sub> and C<sub>i</sub> (µmol or nmol L<sup>−1</sup>) are the final and initial concentrations of the chemical species; V (L) is the water volume in the glass microcosm; N is the number of incubated animals per microcosm; and t (days) is the incubation time. Positive values represent productions while negative values represent uptake.</em></p> <p>Same equations were used to calculated mass-standardized rates, but instead of <em>N</em> the total animal biomass (g<sub>dw</sub>) was used. Animals’ biomass was determined as dry weight (DW) or as dry weight shell free (DWSF) for bivalves, after the desiccation at 70°C until constant mass. Water temperature and salinity were measured in situ with a multiple probe (556 MPS, YSI). Rates are reported as average ± standard error.</p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.