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24 results for “acid deposition”
Bacterial traits, N deposition and mycorrhiza. qSIP Aspartic Acid
<p>Nitrogen (N) deposition increases soil carbon (C) storage by reducing microbial activity. These effects vary in soil beneath trees that associate with arbuscular (AM) and ectomycorrhizal (ECM) fungi. Variation in carbon C and N uptake traits among microbes may explain differences in soil nutrient cycling between mycorrhizal associations in response to high N loads, a mechanism not previously examined due to methodological limitations. Here, we used quantitative Stable Isotope Probing (qSIP) to measure bacterial C and N assimilation rates from an added organic compound, which we conceptualize as functional traits. As such, we applied a trait-based approach to explore whether variation in assimilation rates of bacterial taxa can inform shifts in soil function under chronic N deposition. We show taxon-specific and community-wide declines of bacterial C and N uptake under chronic N deposition in both AM and ECM soils. N deposition-induced reductions in microbial activity were mirrored by declines in soil organic matter mineralization rates in AM but not ECM soils. Our findings suggest C and N uptake traits of bacterial communities can predict C cycling feedbacks to N deposition in AM soils but additional data, for instance on the traits of fungi, may be needed to connect microbial traits with soil C and N cycling in ECM systems. Our study also highlights the potential of employing qSIP in conjunction with trait–based approaches to inform how ecological processes of microbial communities influence soil functioning</p>
Bacterial traits, N deposition and mycorrhiza. qSIP Aspartic Acid
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Phospholipid Fatty Acid Profiles of Bacteria and Fungi in Peat Exposed to Experimentally Increased N Deposition, 2015
Development of the oil sands has led to increasing atmospheric N deposition, with values as high as 17 kg N ha-1 yr-1; regional background levels <2 kg N ha-1 yr-1. Bogs, being ombrotrophic, may be especially susceptible to increasing N deposition. To examine responses to N deposition, over five years, we experimentally applied N (as NH4NO3) to a bog near Mariana Lakes, Alberta, at rates of 0, 5, 10, 15, 20, and 25 kg N ha-1 yr-1, plus controls (no water or N addition). In July of 2015 we measured PLFA markers in two depths in each plot. For the most part, microbial group abundances were not affected by increasing N input (Fig. 16). However, actinomycete abundance decreased with increasing N deposition at rates that were similar in 0-5 and 5-10 cm peat. Gram-negative bacteria increased slightly with increasing N input and were more abundant in 0-5 cm than in 5-10 cm peat; correspondingly the Gram-positive to Gram-negative bacterial ratio decreased with increasing N input and was lower in 0-5 cm than in 5-10 cm peat. Total microbial abundance and total bacterial abundance were significantly higher in 0-5 cm peat than in 5-10 cm peat. It may be that more sensitive/targeted techniques, such as high-throughput pyrosequencing, 16s RNA clone library analysis and rRNA-targeted fluorescence in situ hybridization (FISH) or whole genome shotgun sequencing may be required to reveal bog microbial community responses to N loading.
Phospholipid Fatty Acid Profiles of Bacteria and Fungi in Poor Fen Peat Exposed to Experimentally Increased N Deposition, 2015
Development of the oil sands has led to increasing atmospheric N deposition, with values as high as 17 kg N ha-1 yr-1; regional background levels <2 kg N ha-1 yr-1. To examine responses to N deposition, over five years, we experimentally applied N (as NH4NO3) to a poor fen near Mariana Lake, Alberta, at rates of 0, 5, 10, 15, 20, and 25 kg N ha-1 yr-1, plus controls (no water or N addition). In July of 2015 we measured PLFA markers in two depths in each plot. Fungal abundance increased at N addition levels above 16.6 kg N ha-1 yr-1 and total bacterial abundance also increased at N addition levels above 17.1 kg N ha-1 yr-1, such that the fungal:bacterial ratio was not significantly affected by N addition. Total microbial, gram-negative bacterial, and actinomycete abundance also showed an apparent threshold responses to N addition at 16-17 kg N ha-1 yr-1 addition levels.It may be that more sensitive/targeted techniques, such as high-throughput pyrosequencing, 16s RNA clone library analysis and rRNA-targeted fluorescence in situ hybridization (FISH) or whole genome shotgun sequencing may be required to reveal detailed fen microbial community responses to N loading.
Pre-industrial, present and future atmospheric soluble iron deposition and the role of aerosol acidity and oxalate under CMIP6 emissions: DATASET
<p>This dataset provides output fields that were used in the research article titled "Pre-industrial, present and future atmospheric soluble iron deposition and the role of aerosol acidity and oxalate under CMIP6 emissions." The data includes the following fields presented as yearly means:</p> <ul> <li>Soluble Iron emissions (SFe_emi) in Tg/yr</li> <li>Total Iron emissions (TFe_emi) in Tg/yr</li> <li>Soluble Iron deposition (SFe_dep) (both wet and dry) in Tg/yr</li> <li>Total Iron deposition (TFe_dep) (both wet and dry) in Tg/yr</li> </ul> <p>The data covers the following periods:</p> <ul> <li>Pre-industrial period (PI), with the year 1850</li> <li>Present-day period (PD), with the climatology from 1985 to 2014</li> <li>Three future periods based on the SSP CMIP6 scenarios (SSP126, SSP245, SSP370), with the climatology from 2070 to 2099</li> </ul> <p>An additional file containing information on the cell areas of the output grid is also included (areacell_BergasMassoetal2023.nc).</p>
Data from: Tree-growth is more sensitive than species distributions to recent changes in climate and acidic deposition in the northeastern United States
Tree-growth responses to environmental change could provide early detection of shifts in forest composition and help facilitate ecosystem management and conservation. We studied forest tree responses to recent trends in climate and acidic deposition using analyses of tree rings and long-term climate, deposition and forest plot data along an elevational climatic gradient in the northeastern United States. We analyzed how (a) individual growth of dominant species (Picea rubens, Abies balsamea), and (b) spatial distributions of all species, changed with elevation over time due to changing environment. We observed a mean 220 m upslope shift of temperature envelopes since the 1960s, consistent with regional climate warming, but found no evidence of synchronous upslope shifts in species abundance. Species' ranges were stable although some leaned upslope or downslope, suggesting species-specific migration lags or controls on species' ranges. Compared to species distributions, the growth of dominant species was more responsive to environmental change. Although the basal area of P. rubens declined within its range since the 1960s, its growth has increased recently with increasing precipitation pH and to a lesser extent with warming climate. Abies balsamea has gradually increased in both basal area and density since the 1960s, with its growth responding to precipitation pH but not climate. Historically, P. rubens grew better at lower and A. balsamea at higher elevations, but these elevation effects appeared to be mediated primarily by moisture, and have disappeared over time. Synthesis and applications. Mean tree-growth responses to changing climate (temperature, moisture) and precipitation chemistry were more consistent and more clearly detectable than shifts in tree species' ranges, suggesting that monitoring tree growth across climatically-controlled species' ranges (e.g. along elevational or latitudinal gradients) may provide a powerful tool for early detection of potential future changes in forest composition in a changing environment.
FIGURE. View of the upper side in R. subcalcarata showing the smooth surface with crystal-like deposition (probably usnic acid). Scale = 40 µm. in The genus Ramalina Acharius (Ascomycota, Lecanoromycetes, Ramalinaceae) in northern South America
FIGURE. View of the upper side in R. subcalcarata showing the smooth surface with crystal-like deposition (probably usnic acid). Scale = 40 µm.
DEPOSITION - Decreasing Postoperative Blood Loss by Topical vs. Intravenous Tranexamic Acid in Open Cardiac Surgery
ClinicalTrials.gov study NCT03954314. IPD Sharing: NO. Countries: 6. Publications: 8.
Data from: Tree-growth is more sensitive than species distributions to recent changes in climate and acidic deposition in the northeastern United States
Open the record for dataset details and reuse information.
Data from: Soil chemistry, and not short-term (1-2 year) deer exclusion, explains understory plant occupancy in forests affected by acid deposition
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Genome-wide maps of H3K4me3 deposition comparing Ctrl and Fatty acid oxidation restricted (Cpt1b-deficiency) adult cardiomyocyte
GEO Series GSE172412. Mus musculus. 12 samples. Type: Genome binding/occupancy profiling by high throughput sequencing.
Complement C3 deposition on nucleic acids is characteristic of immune complex initiated classical pathway overdrive in lupus erythematosus
GEO Series GSE26768. Homo sapiens; Sus scrofa; Bos taurus; Capra hircus; Oryctolagus cuniculus. 368 samples. Type: Protein profiling by protein array.
DNA methylation landscape of fat deposit and fatty acid composition variation in obese and lean pigs
GEO Series GSE80096. Sus scrofa. 6 samples. Type: Methylation profiling by high throughput sequencing.
Lower Expression of SLC27A1 Enhances Intramuscular Fat Deposition in Chicken Via Down-Regulated Fatty Acid Oxidation Mediated by CPT1A
GEO Series GSE86920. Gallus gallus. 8 samples. Type: Expression profiling by high throughput sequencing.
A plant histone H3.3-specific amino acid safeguards the deposition of H3K36 methylation for proper plant development and stress responses
GEO Series GSE289942. Arabidopsis thaliana. 6 samples. Type: Expression profiling by high throughput sequencing.
A plant histone H3.3-specific amino acid safeguards the deposition of H3K36 methylation for proper plant development and stress responses [Bisulfite-Seq]
GEO Series GSE290278. Arabidopsis thaliana. 14 samples. Type: Methylation profiling by high throughput sequencing.
A plant histone H3.3-specific amino acid safeguards the deposition of H3K36 methylation for proper plant development and stress responses [T31A_RNAseq]
GEO Series GSE290158. Arabidopsis thaliana. 12 samples. Type: Expression profiling by high throughput sequencing.
A plant histone H3.3-specific amino acid safeguards the deposition of H3K36 methylation for proper plant development and stress responses [G34]
GEO Series GSE289944. Arabidopsis thaliana. 9 samples. Type: Expression profiling by high throughput sequencing.
Variation in Bile Acid Synthesis Capacity: A Key Factor in Differentiating Lipid Deposition Patterns in Goldfish Breeds
GEO Series GSE253896. Carassius auratus. 6 samples. Type: Expression profiling by high throughput sequencing.
A plant histone H3.3-specific amino acid safeguards the deposition of H3K36 methylation for proper plant development and stress responses [ATXR5 H3K36me3 ChIP-seq]
GEO Series GSE311664. Arabidopsis thaliana. 8 samples. Type: Genome binding/occupancy profiling by high throughput sequencing.
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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.