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1,392 results for “accumulation”
Data set supporting Journal article: Siebicke, L., and Emad, A., "True eddy accumulation trace gas flux measurements: proof of concept", Atmos. Meas. Tech., 12, 1–28, 2019.
<p>This data set contains carbon dioxide trace gas flux measurements obtained by the true eddy accumulation technique as described in the research article:</p> <p>Siebicke, L., and Emad, A., "True eddy accumulation trace gas flux measurements: proof of concept", Atmos. Meas. Tech., 12, 1–28, 2019.</p> <p>It contains meteorological measurements (file "meteo.csv"), turbulent energy fluxes (file "energy_fluxes.csv"), three-diomensional wind vector measurements ("file wind.csv"), and carbon dioxide trace gas fluxes obtained by true eddy accumulation (file "co2_flux_TEA.csv") and eddy covariance using data from two separate anomemoters (files "co2_flux_EC_TEA_sonic.csv" and "co2_flux_EC_EC_sonic.csv").</p>
Research data supporting "Investigating the accumulation and translocation of titanium dioxide nanoparticles with different surface modifications in static and dynamic human placental transfer models"
<p>Research data supporting the publication: Aengenheister, L. et al., 2019, "Investigating the accumulation and translocation of titanium dioxide nanoparticles with different surface modifications in static and dynamic human placental transfer models", Eur J Pharm Biopharm. https://doi.org/10.1016/j.ejpb.2019.07.018</p>
Antarctic Snow Radar-Derived Relative Accumulation Product
<p>Small-scale Antarctic accumulation rates relative to MERRA-2 precipitation-evaporation as derived from NASA Operation IceBridge snow radar. </p>
Figure 2 in Heavy metal accumulation as a threat to the endangered Egyptian vulture (Neophron percnopterus L.) in Turkey
Figure 2. Distribution of As values for calamus and vane (Z= –2.49, P = 0.01).
Figure 1 in Heavy metal accumulation as a threat to the endangered Egyptian vulture (Neophron percnopterus L.) in Turkey
Figure 1. Study area and the sampled nests.
Figure 1 in Investigations of the nervous system biomarkers in the brain and muscle of freshwater fish (Oreochromis niloticus) following accumulation of nanoparticles in the tissues
Figure 1. TEM images of muscle (A) and brain (B) tissue samples of control fish (O. niloticus).
Compilation of δO2/N2 records, and accumulation rate and temperature reconstructions from various polar ice cores
<p>Compilation of δO2/N2 records, and accumulation rate and temperature reconstructions from various polar ice cores. The first file 'Compilation_Acc_T_2024.xlsx' contains published temperature and accumulation rate reconstructions which were used to make Figure 3 in the associated paper. The datasets are included as published (i.e., no interpolation onto age or depth scales). Depth/age ranges considered in study are indicated in Table 3 in associated paper. The second file 'Compilation_O2N2_2024.xlsx' contains published and unpublished δO2/N2 data. </p>
Dataset from Makino H. and Suhaimi A. Distributed representations of temporally accumulated reward prediction errors in the mouse cortex.
<p>Dataset from the paper:</p> <p>Makino H. and Suhaimi A. Distributed representations of temporally accumulated reward prediction errors in the mouse cortex.</p> <p>Each variable is described in Description.pdf.</p> <p>Analysis code is available at <a href="https://github.com/HiroshiMakinoLaboratory/RPEAccumulation" target="_blank" rel="noopener">https://github.com/HiroshiMakinoLaboratory/RewardPredictionErrorAccumulation</a>.</p>
Research Data for "Promoting effect of interfacial hole accumulation on photoelectrochemical water oxidation in BiVO4 and Mo doped BiVO4"
<p>This dataset supports the Figures and Tables for the publication "Promoting effect of interfacial hole accumulation on photoelectrochemical water oxidation in BiVO4 and Mo doped BiVO4" published in Advanced Powder Materials under <a href="https://doi.org/10.1016/j.apmate.2024.100234" rel="noreferrer">https://doi.org/10.1016/j.apmate.2024.100234</a></p>
Effects of Pleurotus ferulae water extract (PWE) or Pleurotus ferulae ethanol extract (PEE) on lipid accumulation in 3T3-L1 cells.
<p><span>Lipid accumulation was measured in 3T3-L1 adipocytes following Oil Red O staining, both with and without PWE or PEE treatment. Results are expressed as the mean ± standard deviation (SD) (n = 3). Different letters indicate significant differences (p < 0.05), as determined by one-way analysis of variance (ANOVA) followed by Tukey’s post hoc test.</span></p>
Data from: Effect of lianas on forest-level tree carbon accumulation does not differ between seasons: results from a liana removal experiment in Panama
1. Lianas are prevalent in Neotropical forests, where liana-tree competition can be intense, resulting in reduced tree growth and survival. The ability of lianas to grow relative to trees during the dry season suggests that liana-tree competition is also strongest in the dry season. If correct, the predicted intensification of the drying trend over large areas of the tropics in the future may therefore intensify liana-tree competition, resulting in a reduced carbon sink function of tropical forests. However, no study has established whether the liana effect on tree carbon accumulation is indeed stronger in the dry than in the wet season. 2. Using six years of data from a large-scale liana removal experiment in Panama, we provide the first experimental test of whether liana effects on tree carbon accumulation differ between seasons. We monitored tree and liana diameter increments at the beginning of the dry and wet season each year to assess seasonal differences in forest-level carbon accumulation between removal and control plots. 3. We found that median liana carbon accumulation was consistently higher in the dry ( 0.52 Mg C ha-1 yr-1) than the wet season (0.36 Mg C ha-1 yr-1), and significantly so in three of the years. Lianas reduced forest-level median tree carbon accumulation more severely in the wet (1.45 Mg C ha-1 yr-1) than the dry (1.05 Mg C ha-1 yr-1) season in all years. However, the relative effect of lianas was similar between the seasons, with lianas reducing forest-level tree carbon accumulation by 46.9% in the dry and 48.5% in the wet season. 4. Synthesis: Our results provide the first experimental demonstration that lianas do not have a stronger competitive effect on tree carbon accumulation during the dry season. Instead, lianas compete significantly with trees during both seasons, indicating a large negative effect of lianas on forest-level tree biomass increment regardless of seasonal water stress. Longer dry seasons are unlikely to impact liana-tree competition directly; however, the greater liana biomass increment during dry seasons may lead to further proliferation of liana biomass in tropical forests, with consequences for their ability to store and sequester carbon.
Landslide age, elevation and residual vegetation determine tropical montane forest canopy recovery and biomass accumulation after landslide disturbances in the Peruvian Andes
<p>Landslides are common natural disturbances in tropical montane forests. While the geomorphic drivers of landslides in the Andes have been studied, factors controlling post-landslide forest recovery across the steep climatic and topographic gradients characteristic of tropical mountains are poorly understood.</p> <p>Here we use a LiDAR-derived canopy height map coupled with a 25-year landslide time series map to examine how landslide, topographic, and biophysical factors, along with residual vegetation, affect canopy height and heterogeneity in regenerating landslides. We also calculate aboveground biomass accumulation rates and estimate the time for landslides to recover to mature forest biomass levels.</p> <p>We find that age and elevation are the biggest determinants of forest recovery, and that the jump-start in regeneration that residual vegetation provides lasts for at least 18 years. Our estimates of time to biomass recovery (31.6-37.1 years) are surprisingly rapid, and as a result we recommend that future research pair LiDAR with hyperspectral imagery to estimate forest aboveground biomass in frequently disturbed landscapes.</p> <p>Synthesis: Using a high-resolution LiDAR dataset and a time-series inventory of 608 landslides distributed across a wide elevational gradient in Andean montane forest, we show that age and elevation are the most influential predictors of forest canopy height and canopy variability. Other features of landslides, in particular the presence of residual vegetation, shape post-landslide regeneration trajectories. LiDAR allows for a detailed analysis of forest structural recovery across large landscapes and numbers of disturbances, and provides a reasonable upper bound on aboveground biomass accumulation rates. However, because this method does not capture the effect of compositional change through succession on aboveground biomass, wherein high-wood density species gradually replace light-wooded pioneer species, it overestimates aboveground biomass. Given previously estimated stem turnover rates along this elevational gradient, we posit that aboveground biomass recovery takes at least three times as long as our recovery time estimates based on LiDAR-derived structure alone.</p>
Dataset for "A novel method to identify sub-seasonal clustering episodes of extreme precipitation events and their contributions to large accumulation periods"
<p>Dataset for "A novel method to identify sub-seasonal clustering episodes of extreme precipitation events and their contributions to large accumulation periods".</p> <p>Added file "Obs_metrics_all.RData" containing p-value for significance test of the clustering metric S_cl.</p> <p>Accepted version (August 2021).</p>
Genetics of mercury accumulation in Stickleback, genotypes and metal accumulation phenotypes
<p>Anthropogenic stressors, such as pollutants, act as selective factors that can leave measurable changes in allele frequencies in the genome. Metals are of particular concern among pollutants, because of interference with vital biological pathways. We use the three-spined stickleback as a model for adaptation to mercury pollution in natural populations. We collected sticklebacks from 21 locations in Flanders (Belgium), measured the accumulated levels of mercury in the skeletal muscle tissue, and genotyped the fish by sequencing (GBS). The spread of muscle mercury content across locations was considerable, ranging from 21.5 to 327 ng/g dry weight (DW). We then conducted a genome wide association study (GWAS) between 28,450 SNPs and the accumulated levels of mercury, using different approaches. Based on a linear mixed model analysis, the GWAS yielded multiple hits with a single top hit on Chromosome 4, with eight more SNPs (Single Nucleotide Polymorphism) suggestive of association. A second approach, a latent factor mixed model analysis, highlighted one single SNP on Chromosome 11. Finally, an outlier test identified one additional SNP on chromosome 4 that appeared under selection. Out of all ten SNPs we identified as associated with mercury in muscle, three SNPs all located on Chromosome 4 and positioned within a 2.5 kbp distance of an annotated gene. Based on these results and the genome coverage of our SNPs, we conclude that the selective effect of mercury pollution in Flanders causes a significant association with at least one locus on Chromosome 4 in three-spined stickleback.</p>
MARINE DEBRIS ACCUMULATION ON THE BEACH OF TASIK RIA LOCAL TOURISM DESTINATION NORTH SULAWESI INDONESIA
<p><strong>Abstract. </strong>Marine debris is a global issue and a hot topic in Indonesia. This study involved collecting and quantifying various types of debris at Tasik Ria Beach. The study area is Tasik Ria Beach, a small local tourist destination in Minahasa and Manado areas, with high biodiversity and an essential source of seagrass providing significant and vital habitat for endangered species. Debris was collected on sandy beach and mud beach areas between May and August 2022. The results indicated that ceramic and glass debris was found in the greatest number followed by plastic and other debris, thin plastic, and hard plastic. The major contributing factor to the debris abundance in Tasik Ria beach was the shoreline and recreational activities which showed that the land-based sources provided major inputs of plastic pollution at the beaches. The Clean Coastal Index (CCI) calculation of Tasik Ria Beach yielded a result of 5.8 at the sandy beach whereas at the mud beach was 0.65. Thus, the sandy beach was classified as moderately clean and the mud beach was classified as very clean. </p>
Patterns and determinants of plant-derived lignin phenols in coastal wetlands: implications for organic C accumulation
<p>1. As a major plant-derived soil organic carbon (SOC) component, lignin phenols are unique biomarkers that reflect biogeochemical characteristics under different vegetation compositions and climatic zones in coastal wetlands. However, the latitudinal patterns of plant-derived lignin phenols to SOC and their link with the stability and controlling mechanisms remain poorly understood.</p> <p>2. A total of 156 soil samples from 39 sites along a 5000 km coastal transect, were taken to explore the effects of biological and environmental controls on the patterns of lignin phenols. Lignin phenols had contents ranging from 1.91 to 83.3 mg g−1 OC, and a positive correlation was detected in grass-dominated salt marsh, but a weakly negative correlation in mangrove. Positive correlations between SOC or lignin content and C/V or S/V (the cinnamyl- or syringyl-to-vanillyl) ratios were found, while overall negative correlations between SOC or lignin content and (Ad/Al)V or (Ad/Al)S (the acid-to-aldehyde of vanillyl or syringyl units) ratios were detected, respectively, which confirmed the validity of these lignin biomarker degradation parameters.</p> <p>3. Our findings revealed that plant C inputs and monomer ratios directly influenced the capacity of lignin phenols in soils. Lignin content and stabilization was mainly controlled by soil properties (i.e., pH, EC, sand/clay). Mean annual temperature (MAT) influenced the patterns of lignin phenols both directly by increasing decomposition and indirectly by changing the vegetation and soil biogeochemistry (i.e., microbial substrate availability).</p> <p>4. Coastal wetlands are characterized by high primary productivity and C burial rate, yet plant-derived lignin phenols are not as much as we thought compared to microbial residues C. Precise identification and quantification of the origin, decomposition, and determinants of lignin phenols help us understand their contribution to C sequestration and its response to climate and environmental changes.</p>
Dataset related to article "MASSIVE IRON ACCUMULATION IN PKAN-DERIVED NEURONS AND ASTROCYTES: LIGHT ON THE HUMAN PATHOLOGICAL PHENOTYPE"
<p>The database contains the microxygraphy data included in the article at title</p>
Elevated atmospheric CO2 suppresses silicon accumulation and exacerbates endophyte reductions in plant phosphorus
<p>Many temperate grasses are both hyper-accumulators of silicon (Si) and hosts of <em>Epichloë</em> fungal endophytes; functional traits which may alleviate environmental stresses such as herbivore attack. Si accumulation and endophyte infection may operate synergistically, but this has not been tested in a field setting, nor in the context of changing environmental conditions. Predicted increases in atmospheric CO<sub>2</sub> concentrations can affect both Si accumulation and endophyte function, but these have not been studied in combination.</p> <p>We investigated how elevated atmospheric CO<sub>2</sub> (eCO<sub>2</sub>), Si supplementation, endophyte-presence and insect herbivory impacted plant growth, stoichiometry (C, N, P and Si), leaf gas exchange (rates of photosynthesis, stomatal conductance, transpiration rates) and endophyte production of anti-herbivore defences (alkaloids) of an important pasture grass (tall fescue; <em>Lolium arundinaceum</em>) in the field.</p> <p>eCO<sub>2</sub> and Si supplementation increased shoot biomass (+52% and +31%, respectively), whereas herbivory reduced shoot biomass by at least 35% and induced Si accumulation by 24%. Shoot Si concentrations, in contrast, decreased by 17–21% under eCO<sub>2</sub>. Si supplementation and herbivory reduced shoot C concentrations. eCO<sub>2</sub> reduced shoot N concentrations which led to increased shoot C:N ratios. Overall, shoot P concentrations were 26% lower in endophytic plants compared to non-endophytic plants, potentially due to decreased mass flow (i.e. observed reductions in stomatal conductance and transpiration). Alkaloid production was not discernibly affected by any experimental treatment. The negative impacts of endophytes on P uptake were particularly strong under eCO<sub>2</sub>.</p> <p>We show that eCO<sub>2</sub> and insect herbivory reduce and promote Si accumulation, respectively, incorporating some field conditions for the first time. This indicates that these drivers operate in a more realistic ecological context than previously demonstrated. Reduced uptake of P in endophytic plants may adversely affect plant productivity in the future, particularly if increased demand for P due to improved plant growth under eCO<sub>2</sub> cannot be met.</p>
The validity of the bioaccumulation index versus the bioaccumulation factor for assessment of element accumulation in black soldier fly larvae
<p>Dataset for the input-output calculations to evaluate bioaccumulation factor (BAF) and bioaccumulation index (BAI) in comparison with true element retention rate in black soldier fly larvae (BSFL). The results suggest a higher agreement of true element retention rate with BAF than with BAI. https://doi.org/10.3920/JIFF2023.0021</p>
Upcycling of recycled minerals from sewage sludge through black soldier fly larvae (Hermetia illucens): impact on growth and mineral accumulation
<p>Dataset for the insect experiment to evaluate the growth and bioaccumulation of mineral and heavy metal in black soldier fly larvae reared either on a modified Gainesville fly diet (FD) or on FD supplemented with either 4% of biochar or 3.6% of single-superphosphate recyclate.</p>
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.