Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
30
datasets available to search
ShareScore release 0.7.1
Dataset results
30 results for “nitrogen use efficiency”
Data for "How Nitrogen and Phosphorus Availability Change Water Use Efficiency in a Mediterranean Savanna Ecosystem"
<p>These are flux and meteorological data for the measurement sites ES-LMa (CT; control treatment), ES-LM1 (NT; nitrogen treatment), and ES-LM2 (nitrogen + phosphorus treatment) for the period from 2014-03-20 to 2020-02-01.</p> <p>These data were used for the manuscript:</p> <p>El-Madany, et al. (2021) "How Nitrogen and Phosphorus Availability Change Water Use Efficiency in a Mediterranean Savanna Ecosystem" submitted to Journal of Geophysical Research - Biogeoscience.</p>
Nitrogen Input, Nitrogen Surplus, and Nitrogen Use Efficiency Globally and for Selected Regions
<p>Data on nitrogen input, surplus and nitrogen use efficiency are provided globally, and for USA, European Union, China, Brazil and South Asia (i.e. India, Nepal, Bangladesh and Pakistan) for 1995 to 2013. Nitrogen input (in the file ninput_1995_2013.csv) is separated into synthetic fertiliser (FERT), manure (MANURE), biological nitrogen fixation (BNF), and NOx deposition from non-agricultural sources (NOx). These N-inputs are for the whole agricultural system, including crops and grassland. Also included is N-surplus (SURPLUS) for cropping systems, which is calculated as the difference between the total N-input and the N removed through harvest. NUE (in the file nue_1995_2013.csv) is N in harvest relative to the total N-input. </p> <p>Synthetic fertilizer application is based on the FAOSTAT dataset (http://www.fao.org/home/en/) with several inputs from the International Fertilizer Association (<a href="https://www.fertilizer.org/">https://www.fertilizer.org/</a>). Total animal excretion is calculated using the FAOSTAT livestock inventory and dynamic excretion factors, biological N fixation is calculated from crop productivities (Anglade et al., 2015)<sup> </sup>and atmospheric deposition was from Dentener et al. (2006). Grassland nitrogen fixation was based on the grassland production estimated following Lassaletta et al. (2016). N in harvested crops is based on crop productivity and N content of 177 crops, utilizing data from the FAOSTAT database.</p>
Data from: A global reference database in FAOSTAT of cropland nutrient budgets and nutrient use efficiency: nitrogen, phosphorus and potassium, 1961–2020
<p class="MsoNormal">Agricultural nutrient budgets help to identify an excess or an insufficiency in use of fertilizers and other nutrient sources. Nutrient budgets allow for indicators such as the nutrient balance (surplus or deficit) and nutrient use efficiency to be estimated. This can help in the monitoring of agricultural productivity and sustainability globally. The present dataset is a global database of country-level budget estimates for nitrogen (N), phosphorus (P) and potassium (K) in cropland. The database is disseminated in FAOSTAT and provides a global reference, synthesizing and continuously updating the state-of-the-art on this topic. The database covers the period 961 to 2020 for 205 countries and territories, as well as regional and global aggregates. Results indicate the wide range in nutrient use and use efficiencies across regions, nutrients, and time. This dataset introduces improvements over previous work in relation to key nutrient coefficients affecting nutrient budgets and use efficiency estimates. This is especially for nutrient removal in crop products, manure nutrient content, atmospheric deposition and crop biological N fixation rates. </p>
Data from: A global FAOSTAT reference database of cropland nutrient budgets and nutrient use efficiency (1961–2020): nitrogen, phosphorus and potassium
Open the record for dataset details and reuse information.
Data of "Investigating the potential for genetic improvement of nitrogen and phosphorus efficiency of in a Swiss Large White pigs population using chemical analysis"
<p>Data for article 'Investigating the Potential for Genetic Improvement of Nitrogen and Phosphorus Efficiency in a Swiss Large White Pig Population using Chemical Analysis' (DOI: 10.1111/JBG.12472). Dataset of 294 Swiss Large White pigs for which phenotypes of nitrogen efficiency, phosphorus efficiency (both determined by chemical analysis of N and P content of empty body and carcass as well as the feed ingested over the experiment phase), average daily gain and gain:feed ratio are available. We also provide the pedigree that was used to estimate genetic parameters in animal models and a description of the variables (metadata).</p>
An isotope study on Nitrogen and Phosphorus use efficiency and movement in soil in a mimicked vermicompost-based organo-mineral fertilizer
<p>Vermicompost (VC), a stabilized organic material with high organic and humic carbon, and favorable aggregation properties, was tested as a fraction of organo-mineral fertilizers (OMFs), where organic and mineral fractions interact in hotspot areas with surrounding soil. Solutions containing <sup>33</sup>P radioisotope and <sup>15</sup>N labeled mineral fertilizers were combined with vermicompost at two ratios of organic carbon (C<sub>org</sub>) to mineral nitrogen (N) and phosphorus (P) (OMF<sub>7.5C </sub>and OMF<sub>15C</sub>) to simulate OMF granules. Control treatments included unfertilized soil (N<sub>0</sub>P<sub>0</sub>), mineral fertilizer (MF<sub>NP</sub>), and sole vermicompost at 2 rates (OF<sub>7.5C </sub>and OF<sub>15C</sub>). Nitrogen and P uptake by Italian ryegrass (<em>Lolium multiflorum</em>) were measured over in 8 weeks. Furthermore, MF<sub>NP</sub>, OMF<sub>7.5C</sub>, and OMF<sub>15C </sub>treatments were incubated for 10 days without plant to measure atom% <sup>15</sup>N excess and <sup>33</sup>P radioactivity, as indicators of N and P movement from two soil layers (surrounding fertilizer hotspot and below it). In the pot study, OMF<sub>15C </sub>caused 24% lower biomass and less nutrient recovery derived from fertilizer (N -11%, P –8.5%), compared to MF<sub>NP</sub>. In the incubation study, OMF<sub>15C </sub>exhibited +19% atom% <sup>15</sup>N excess in the combined two soil layers, relative to MF<sub>NP</sub>, and +28% <sup>33</sup>P radioactivity in the soil surrounding the hotspot, and –89 % in the soil below it. We interpreted this as a reduction in nutrient availability of the combined vermicompost+mineral fertilizers, due to lower P mobility in soil. The combination of vermicompost with mineral fertilizers can reduce P movement in soil. A higher C<sub>org</sub>:N:P ratio resulted in lower nutrient use efficiency in two months.</p>
Data for 'Nitrogen Availability and Summer Drought, but not N:P Imbalance, Drive Carbon Use Efficiency of a Mediterranean Tree-Grass Ecosystem
<p>These are flux, meteorology, phenological transition dates and a NDVI timeseries for the Majadas del Tietar 'MANIP' experimental site between 2014 and 2020. </p> <p>These data were used for the manuscript:</p> <p>Nair et al. <span>Nitrogen Availability and Summer Drought, but not N:P Imbalance, Drive Carbon Use Efficiency of a Mediterranean Tree-Grass Ecosystem submitted to Global Change Biology. <br></span></p> <p><span>In this repository we provide partially processed data to reproduce the analysis in our manuscript.<br>Raw images and half-hourly flux data are available at the following locations:</span></p> <p><span>Phenocam Imagery: the Phenocam network (https://phenocam.nau.edu/webcam/, sites - CT: eslma, NT: eslma1, NPT: eslma2).<br></span><span>Flux and meteo: the European Flux Database (https://www.europe-fluxdata.eu/, sites - CT: ES-LMa, NT: ES-LM1, NPT: ES-LM2). <br></span><span>Satellite NDVI: Sentinel-2A and 2B data available at https://dataspace.copernicus.eu/.</span></p>
Data from: Nitrogen reduction causes shifts in winter and spring phytoplankton composition and resource use efficiency in a large subtropical lake in China
<p>Aquatic ecosystems occasionally show ecological thresholds, defined as the point at which there is a sudden shift in production, trait or biomass or where changes in an environmental driver create nonlinear responses at the ecosystem level. Previous studies of lakes have mainly focused on how reduction in particularly phosphorus (P) concentrations helps to create a shift in lakes from a turbid to a clear state (re-oligotrophication), whereas the effect of nitrogen (N) reduction is less well studied. Here, by analysing a 28-year monthly monitoring dataset (from December 1991 to November 2019) from the subtropical, large eutrophic Lake Taihu, China, we identified a sudden shift in phytoplankton biomass and composition that coincided with a pronounced change in ecosystem functions, for example, resource use efficiency (RUE), during a period with reduction of the external nutrient loading. The changes were particularly strong in winter–spring where a sudden decrease in N concentrations was accompanied by a sudden increase in diatom biomass and phytoplankton RUE and a shift from green algae and flagellate co-dominance to dominance of diatoms. Structural equation modelling further indicated that ammonium reduction led directly to increases in winter–spring phytoplankton RUE and diatom biomass. Repeated fish stocking likely also contributed to the changes in biomass and RUE. Our study provides new insight into the ecological responses to N loading reduction and contributes to the understanding of lake responses to early re-oligotrophication, which was pronounced mainly in the colder seasons in subtropical Lake Taihu, similar to findings in the early phase of re-oligotrophication in numerous temperate lakes.</p>
Long-term warming of a forest soil reduces microbial biomass and its carbon and nitrogen use efficiencies
<p>Global warming impacts biogeochemical cycles in terrestrial ecosystems, but it is still unclear how the simultaneous cycling of carbon (C) and nitrogen (N) in soils could be affected in the longer-term. Here, we evaluated how 14 years of soil warming (+4°C) affected the soil C and N cycle across different soil depths and seasons in a temperate mountain forest. We used H<sub>2</sub><sup>18</sup>O incorporation into DNA and <sup>15</sup>N isotope pool dilution techniques to determine gross rates of C and N transformation processes. Our data showed different warming effects on soil C and N cycling, and these were consistent across soil depths and seasons. Warming decreased microbial biomass C (−22%), but at the same time increased microbial biomass-specific growth (+25%) and respiration (+39%), the potential activity of β-glucosidase (+31%), and microbial turnover (+14%). Warming reduced gross rates of protein depolymerization (−19%), but stimulated gross N mineralization (+63%) and the potential activities of N-acetylglucosaminidase (+106%) and leucine-aminopeptidase (+46%), and had no impact on gross nitrification (+1%). Microbial C and N use efficiencies were both lower in the warming treatment (−15% and −17%, respectively). Overall, our results suggest that long-term warming drives soil microbes to incorporate less C and N into their biomass (and necromass), and to release more inorganic C and N to the environment, causing lower soil C and N storage in this forest, as indicated by lower soil C and total N contents. The decreases in microbial CUE and NUE were likely triggered by increasing microbial P constraints in warmed soils, limiting anabolic processes and microbial growth and promoting pervasive losses of C and N from the soil.</p>
Data from: Nitrogen reduction causes shifts in winter and spring phytoplankton composition and resource use efficiency in a large subtropical lake in China
Open the record for dataset details and reuse information.
Long-term warming of a forest soil reduces microbial biomass and its carbon and nitrogen use efficiencies
Open the record for dataset details and reuse information.
An isotope study on Nitrogen and Phosphorus use efficiency and movement in soil in a mimicked vermicompost-based organo-mineral fertilizer
Open the record for dataset details and reuse information.
Data from: Land-use legacies influence tree water-use efficiency and nitrogen dynamics in recently established European forests
Open the record for dataset details and reuse information.
Data from: Nitrogen, phosphorus, and cation use efficiency in stands of regenerating tropical dry forest
Open the record for dataset details and reuse information.
Data from: Prolonged exposure to manure from livestock administered antibiotics decreases ecosystem carbon-use efficiency and alters nitrogen cycling
Microbial communities drive soil ecosystem function but are also susceptible to environmental disturbances. We investigated whether exposure to manure sourced from cattle either administered or not administered antibiotics affected microbially-mediated terrestrial ecosystem function. We quantified changes in microbial community composition via amplicon sequencing, and terrestrial elemental cycling via a stable isotope pulse-chase. Exposure to manure from antibiotic-treated cattle caused: i) changes in microbial community structure; and ii) alterations in elemental cycling throughout the terrestrial system. This exposure caused changes in fungal:bacterial, as well as changes in bacterial community structure. Additionally, exposure to manure from cattle treated with pirlimycin resulted in an approximate two-fold increase in ecosystem respiration of recently fixed-carbon, and a greater proportion of recently-added nitrogen in plant and soil pools compared to the control manure. Manure from antibiotic-treated cattle therefore affects terrestrial ecosystem function via the soil microbiome, causing decreased ecosystem carbon use efficiency, and altered nitrogen cycling.
Data from: Prolonged exposure to manure from livestock administered antibiotics decreases ecosystem carbon-use efficiency and alters nitrogen cycling
Open the record for dataset details and reuse information.
Elevated CO2 and Nitrogen Supply Boost N Use Efficiency and Wheat Growth, and Differentiate Soil Microbial Communities Related to Ammonia-oxidization
Open the record for dataset details and reuse information.
Elevated CO2 and Nitrogen Supply Boost N Use Efficiency and Wheat Growth, and Differentiate Soil Microbial Communities Related to Ammonia-oxidization
Open the record for dataset details and reuse information.
Model-to-crop conserved NUE Regulons enhance machine learning predictions of nitrogen use efficiency
GEO Series GSE280344. Zea mays. 57 samples. Type: Expression profiling by high throughput sequencing.
Transcriptome-based prediction of nitrogen use efficiency in Arabidopsis and maize - I
GEO Series GSE152249. Arabidopsis thaliana; Zea mays. 199 samples. Type: Expression profiling by high throughput sequencing.
ScienceDex guides
Understand access before you commit
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.