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.
34
datasets available to search
ShareScore release 0.9.0
Dataset results
34 results for “nitrogen flux”
Mycorrhizal effects on decomposition and soil CO2 flux depend on changes in nitrogen availability during forest succession
Open the record for dataset details and reuse information.
Enhanced isohydric behavior decoupled the whole-tree sap flux response to leaf transpiration under nitrogen addition in a subtropical forest
Open the record for dataset details and reuse information.
Functional attributes of conifers expanding into temperate semi-arid grasslands modulate carbon and nitrogen fluxes in response to prescribed fire
Open the record for dataset details and reuse information.
Data from: Desiccation and rehydration of mosses greatly increases resource fluxes that alter soil carbon and nitrogen cycling
Open the record for dataset details and reuse information.
Nonlinear responses of ecosystem carbon fluxes to nitrogen deposition in an old-growth boreal forest
<p>Nitrogen (N) deposition is known to increase carbon (C) sequestration in N-limited boreal forests. However, the long-term effects of N deposition on ecosystem carbon fluxes have been rarely investigated in old-growth boreal forests. Here we show that decade-long experimental N additions significantly stimulated net primary production (NPP) but the effect decreased with increasing N loads. The effect on soil heterotrophic respiration (Rh) shifted from a stimulation at low-level N additions to an inhibition at higher levels of N additions. Consequently, low-level N additions resulted in a neutral effect on net ecosystem productivity (NEP), due to a comparable stimulating effect on NPP and Rh, while NEP was increased by high-level N additions. Moreover, we found nonlinear temporal responses of NPP, Rh and NEP to low-level N additions. Our findings imply that actual N deposition in boreal forests likely exerts a minor contribution to their soil C storage.</p>
Individual and interactive effects of warming and nitrogen supply on CO2 fluxes and carbon allocation in subarctic grassland
<p>We provide data (Data_all.xlsx) and the code for ecosystem productivity, soil respiration, carbon allocation in the shoot, root, soil, and microbes, and nitrogen and carbon availability in plant, soil, and microbes data. The measurements were made under soil warming gradient and under N fertilization treatment during the summer of 2018.</p> <p>The sheet '13C_allocation' contains data on excess <sup>13</sup>C in the plant, soil, and soil respiration for days 1,3,6, and 10 days after <sup>13</sup>CO<sub>2</sub> pulse labeling. </p> <p>The sheet 'primary productivity' contains data on ecosystem fluxes (Gross primary productivity; Net ecosystem productivity and Dark respiration).</p> <p>The sheet 'SR' contains data of soil respiration.</p> <p>The sheet 'dynamics.' contains data of continuous measurements of soil respired CO<sub>2</sub> (SR), <sup>13</sup>CO<sub>2</sub> (SR13C), soil water content(SWC), soil temperature (ST), and photosynthetic active radiation (PAR) and air temperature (Tair).</p> <p>The sheet 'Soil_N' consists of dissolved organic N (TdN), NH<sub>4</sub>, and NO<sub>3</sub> measured in soil. The sheet plant_N consists of N in plants. The microbial biomass carbon (MBC) and nitrogen (MBN) are provided in the sheet 'Microbial_Biomass'</p> <p>The R file 'Script. R' explains and plots the data. In addition, this R file also provides the script for time series regression analysis between response variables (soil-respired CO<sub>2</sub> and soil-respired <sup>13</sup>CO<sub>2</sub>) and environmental drivers (soil water content, soil temperature, and PAR), and provides the script for structural equation modeling (SEM) and linear mixed effects model and statistics.</p>
Nonlinear responses of ecosystem carbon fluxes to nitrogen deposition in an old-growth boreal forest
Open the record for dataset details and reuse information.
Data from: Fog as a source of nitrogen for redwood trees: evidence from fluxes and stable isotopes
A defining feature of the redwood forest in coastal California is the presence of fog in the summer months, a time when there is typically little rainfall. Our goal was to determine the role of summer fog in canopy transformation of nitrogen, nitrogen uptake by trees and photosynthesis within a coastal redwood forest ecosystem. We measured horizontal and vertical inputs of nitrogen, the isotopic composition of nitrogen in a variety of atmospheric sources (summer fog, winter rain and throughfall throughout the year), nitrogen pools (soil solution) and plant tissue (roots and foliage), as well as rates of photosynthesis and nitrogen uptake by trees. Throughfall nitrogen fluxes were greater at the forest edge compared to the interior both within the canopy (sampled 10 m above-ground) and onto the forest floor (sampled 1 m above-ground; P < 0.05). Similarly, soil solution inline image and total inorganic nitrogen were greater at the forest edge compared to the interior (P = 0.0014 and 0.009, respectively). Whereas natural abundance δ15NO3 values were not significantly different between winter rain (measured as bulk precipitation) and summer fog water (average δ15N = −1.2 ± 0.680/00), δ15NH4 values were significantly greater in fog water (11.4 ± 2.70/00) compared to rain (1.2 ± 0.90/00). We found no difference in δ15N in roots from forest edge trees compared to interior trees. In contrast, nitrogen concentrations and δ15N in foliage from forest edge trees were significantly greater compared to interior trees (P < 0.0001), suggesting that the leaves of forest edge trees may be obtaining a greater proportion of their nitrogen from fog compared to those of the interior trees. Natural abundance 13C of leaf sugars and rates of photosynthesis were significantly higher at the forest edge compared to the interior during the fog season (P < 0.05), but not different between locations in the rain season (P > 0.05). Nitrification in the forest floor, rather than the canopy, is the primary source of inline image in these soils throughout the year. Synthesis. Summer fog provides nitrogen directly and indirectly to redwood trees, especially those at the forest edge, and affects the physiologic function of redwood trees.
Data from: Fog as a source of nitrogen for redwood trees: evidence from fluxes and stable isotopes
Open the record for dataset details and reuse information.
Data from: The direction of carbon and nitrogen fluxes between ramets changes during ontogeny under simulated competition for light
Open the record for dataset details and reuse information.
Quorum Quenching of Nitrobacter winogradskyi Suggests that Quorum Sensing Regulates Fluxes of Nitrogen Oxide(s) during Nitrification.
GEO Series GSE84969. Nitrobacter winogradskyi. 8 samples. Type: Expression profiling by high throughput sequencing.
Gibberellins synthesis is involved in the reduction of cell flux and elemental growth rate in maize leaf under low nitrogen supply
GEO Series GSE111425. Zea mays. 8 samples. Type: Expression profiling by high throughput sequencing.
Low-nitrogen stress reduces cell flux and cell elongation rate in maize leaf via reducing GA synthesis
GEO Series GSE99638. Zea mays. 4 samples. Type: Expression profiling by high throughput sequencing.
Wind Energetic Particle Acceleration Composition Transport (EPACT) SupraThermal Energetic Particle Telescope (STEP) Differential, Directional Carbon, Nitrogen, and Oxygen Fluxes, 10 min Data
The EPACT Instrument on Wind STEP - SupraThermal Energetic Particle Telescope measures Ion Fluxes of Protons (H) in 0.12.5 MeV Energy Range and He-Fe Nuclei in the ~0.032 MeV/nucleon Energy Ranges in two identical Telescopes, each with a Geometrical Factor of 0.4 cm^2 sr and a rectangular Field of View with an Angular Acceptance of 44° in Azimuth and 17° in Polar Angle.
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.