Wyoming Data Repository
Not a member yet
164 research outputs found
Sort by
Data and Code for Joint Model Inference to Support RAD-Based Decision Making for Aspen Management in a Changing Climate
No full textThis dataset includes data and code needed to fit the model, generate the predictions, and map the RAD outputs described in the publication "Joint model inference to support RAD-based decision making for aspen management in a changing climate". The dataset includes original aspen data collected by the Bridger-Teton National Forest and their partners, as well as publicly available data from the USDA Forest Service Inventory and Analysis (FIA) and from the CHELSA downscaled climatology dataset
The rhizosphere metabolome exhibits diurnal oscillations and spatial stratification in soil-grown plants
No full textOne RDS file containing sample metadata and chemical feature peak area data generated using MetaboAnalyist software, and one xls file with tentative chemical IDs corresponding to hte chemical features in the RDS file.
The abstract for the paper generated using this data is as follows:
The rhizosphere metabolome includes compounds exuded in a thin layer from plant root, and may affect the assembly and composition of microbial communities. Characterizing the dynamic nature and composition of the rhizosphere metabolome is a key to furthering our understanding of plant health and fitness, due to the pervasive effects of microbial associates on host plant phenotypes. Untargeted metabolomic sampling of the rhizosphere metabolome in a biologically relevant manner is methodologically challenging, as plant growth in hydroponic systems or in soil followed by immersion for sampling leads to osmotic imbalance that may dramatically alter exudation; in-situ sampling in soil has proven largely intractable to date. In this study, we utilized microdialysis probes to sample in-situ areas of high and low root density of soil-grown plants as well as soils containing no plants to determine spatial and temporal variability in the soil metabolome. We found high temporal and spatial variability, with diel cycling of chemical features occurring both in the rhizosphere of soil-grown plants and in soils containing no plants. Chemical features unique to the plant rhizosphere and unique to plant genomes, such as putative glucosinolates, also exhibited temporal diel cycling. This observation suggests that both compounds in the plant rootzone or arising from free-living microbes may exhibit rhythmic patterns. Our study showed that microdialysis probes are a viable method of rhizosphere metabolome sample collection, with both fine scale and fine temporal sensitivity, able to sample within highly biologically relevant soil systems
Raw Data for "Electrochemical nucleation and growth kinetics: insights from single particle scanning electrochemical cell microscopy studies"
No full textThis is raw data for the manuscript "Electrochemical nucleation and growth kinetics: insights from single particle scanning electrochemical cell microscopy studies" published in Faraday Discussions. All data files are the raw Scanning Electrochemical Cell Microscopy data which consists of a series of current-time curves collected at a rectangular array of points across carbon (C) and indium tin oxide (ITO) samples at the indicated potentials vs. a Ag+/Ag reference electrode
Weak precipitation δ2H response to large Holocene hydroclimate changes in eastern North America
No full textIn eastern North America, annual precipitation increased by >40% over the Holocene, largely in response to melting of the Laurentide Ice Sheet. The change substantially raised lake levels and transformed conifer-dominated ecosystems into mesic deciduous forests. The δ2H of terrestrially derived leaf-wax n-alkanes can facilitate diagnoses of the climate dynamics involved by reconstructing the δ2H of mean annual precipitation (δ2HMAP). However, competing influences on δ2HMAP in the mid-latitudes, such as changes in moisture sources and in the seasonal distribution of precipitation, can generate confounding effects. To test the sensitivity of the δ2H of mean annual precipitation to potential changes associated with the final Holocene phases of deglaciation in eastern North America, we used 14 fossil-pollen records to reconstruct monthly precipitation changes and to model δ2HMAP during the Holocene. The pollen-inferred precipitation increased by 100-200 mm during both cold and warm seasons, but modelled δ2HMAP changed by only ~10‰ because isotopically-heavy summer precipitation increased by nearly as much as the cold-season isotopically-light winter precipitation. Three new C29 alkane (δ2HC29) records spanning the Holocene from Vermont, Pennsylvania, and Massachusetts closely follow the modeled δ2HMAP trends and confirm only a small decline in δ2HMAP. Because the shifts in precipitation seasonality accurately predict the n-alkane records, changes in moisture sources or pathways appear to play only a minor role in the regional δ2HMAP history despite the effects of deglaciation on atmospheric circulation. Soil evaporation also did not significantly alter δ2HC29 from the values predicted from the pollen-derived reconstructions. The results affirm that δ2HC29 faithfully detected anticipated isotopic changes in δ2HMAP, but that important paleoclimate events may not always yield strong changes in δ2HMAP
Raw 16S amplicon reads used in the manuscript entitled: 'Impacts of sample handling and storage conditions on archiving physiologically active soil microbial communities'
No full textSoil microbial communities are fundamental to ecosystem processes and plant growth, yet, community composition is seasonally and successionally dynamic, which interferes with long-term iterative experimentation of plant-microbe interactions. We explore how soil sample handling (e.g., filtering) and sample storage conditions impact the ability to revive the original, physiologically active, soil microbial community. We obtained soil from agricultural fields in Montana and Oklahoma, USA and samples were sieved to 2mm or filtered to 45µm. Sieved and filtered soil samples were archived at -20C or -80C for 50 days and revived for 2 or 7 days. We extracted DNA and the more transient RNA pools from control and treatment samples and characterized microbial communities using 16S amplicon sequencing. Filtration and storage treatments significantly altered soil microbial communities, impacting both species richness and community composition. Storing sieved soil at -20C did not alter species richness and resulted in the least disruption to the microbial community composition in comparison to non-archived controls as characterized by RNA pools from soils of both sites. Filtration significantly altered composition but not species richness, although filtered treatments had lower mean richness. Archiving sieved soil at -20C could allow for long-term and repeated experimentation on preserved physiologically active microbial communities
Improving Semi-Arid Agroecosystem Services with Cover Crop Mixes
No full textWinter wheat (Triticum aestivum, L.) production in the semi-arid US Northern High Plains (NHP) is challenged by frequent droughts and water-limited, low fertility soils. Composted cattle manure (compost) and cover crops (CC) are known to provide agroecosystem services such as improved soil health, and in the CC case, increased plant diversity, and competition with weedy species. The main concern of planting CC in winter wheat fallow rotation in regions that are more productive than the NHP, however, is the soil moisture depletion. It is unknown however, whether addition of CC to compost-amended soils in the NHP will improve soil properties and agroecosystem health without compromising already low soil water content. The main objective of this study was to assess the effects of four CC treatments amended with compost (45 Mg ha-1) or inorganic fertilizer (IF) (.09 Mg ha-1 mono-ammonium phosphate, 11-52-0 and 1.2 Mg ha-1ammonium sulfate, 21-0-0) on the presence of weeds, soil and plant total carbon (C), nitrogen (N), and biological dinitrogen (N2) fixation (BNF). Mycorrhizal Mix (MM), Nitrogen Fixer Mix (NF), Soil Building Mix (SB), a monoculture of phacelia (Phacelia tanacetifolia Benth L.) (PH), and a no CC control (no CC) were grown in native soil kept at 7% soil moisture in a greenhouse for a period of nine weeks. When amended with compost, MM was the most beneficial (48 g m-2 BNF and 1.7% soil C increase). SB had the highest germination, aboveground biomass, and decreased weed biomass by 60% . It also demonstrated the second highest amount of BNF (40 g m-2) and soil C increase by 1.5%. On contrary, IF hindered BNF by almost 70% in all legume-containing CC treatments and reduced soil C by 15%
District of Columbia - US Physical Education and Physical Activity Policy (US-PEPAP) Implementation Surveillance Data
No full textUS-PEPAP District of Columbia DataWhile summary of the existence of US state policies regarding physical education and physical activity are available, measures of the policy implementation are rare therefore, the US-PEPAP implementation survey was designed to capture accurate and up to date information on physical education and physical activity policy implementation in schools as reported directly by physical educators. A secondary purpose of this work was to engage physical educators, university researchers, and other proponents of lifelong physical activity in becoming advocates for more favorable policy in each of the 50 US states
Washington - US Physical Education and Physical Activity Policy (US-PEPAP) Implementation Surveillance Data
No full textUS-PEPAP Washington DataWhile summary of the existence of US state policies regarding physical education and physical activity are available, measures of the policy implementation are rare therefore, the US-PEPAP implementation survey was designed to capture accurate and up to date information on physical education and physical activity policy implementation in schools as reported directly by physical educators. A secondary purpose of this work was to engage physical educators, university researchers, and other proponents of lifelong physical activity in becoming advocates for more favorable policy in each of the 50 US states
Tropical | University of Wyoming Stratospheric Aerosol Measurements
No full textThe globally distributed stratospheric aerosol are a constant but highly variable component of the Earth’s atmosphere. They impact climate through their albedo and ozone through heterogeneous chemistry. For these reasons they must be considered in all climate prediction models, and there are a host of measurement platforms to characterize these aerosol. Their optical properties have been measured from satellites, since the late 1970s, while surface based lidar measurements have been completed regularly at a handful of locations since the mid 1970s. The first measurements, however, were completed using in situ instruments deployed on balloons and aircraft in the 1960s. In contrast to the satellite and lidar measurements which provide extinction or backscatter, the in situ measurements provide size distributions, and thus the only direct path for deriving the microphysical parameters required by the global models such as aerosol surface area, volume, and cross section. The longest continuous record of in situ stratospheric aerosol measurements has been completed at Laramie, Wyoming, 1971-2020, comprising nearly 400 individual balloon flights. The measurements from these flights since 1989 are contained in this digital archive. In addition to the flights from Laramie there are over 100 flights from McMurdo Station, Antarctica, 45 flights from Kiruna, Sweden, and a handful of flights from 13 other locations throughout the world stretching from 45˚S to 68˚N. The measurements from Laramie from 1971 – 1988 are available on the data base of the Network for the Detection of Atmospheric Composition Change, https://ndacc.larc.nasa.gov/stations/laramie-wy-united-states.
This record includes the following Tropical datasets:
/Aerosol_InSitu_Meas/In_Hyderabad_17N_79E_2015/
/Aerosol_InSitu_Meas/NI_Niamey_13N_2E_2006_2008/
/Aerosol_InSitu_Meas/BR_Teresina_5S_43W_2008/
/Aerosol_InSitu_Meas/AU_Darwin_13S_132E_2005_2014/
/Aerosol_InSitu_Meas/BR_Bauru_22S_49W_1997/
/Aerosol_InSitu_Meas/AU_AliceSprings_24S_134E_2017/, UWv1.0 only
Within each of these directories are the following subdirectories/folders:
Nr_Full_Profile - Sounding files for aerosol size and number concentration. The file name, e.g. 20080622_WY_WOPC_ATA6m.ASC, indicates the date (yyyymmdd) and location, MM=McMurdo, WY=Laramie, the instrument name (e.g. WOPC_ATA6m). The file extension indicates the vertical resolution, .ASC, implies full data , or an average, e.g. .500m for a 500 m average. These differences in the vertical averaging are separated into separate subfolders. The files include measurements from the surface to balloon burst. All files include general and specific metadata. For the Laramie measurements, where three different instruments (Dust, WOPC, WLPC) have been used, the measurements are further divided into instrument folders.
SizeDist_Stratosphere - Lognormal size distributions (either unimodal or bimodal) at the vertical resolution indicated in the file name. The file names are somewhat long and include the name of the source file for the measurements, including the vertical resolution, the altitude at which the size distributions begin (typically the tropopause), and "_Srs_ce" which indicates the fit was completed with the new fitting algorithm which accounts for the instrument counting efficiency at each channel size. All files include general and specific metadata. For the Laramie measurements, where three different instruments (Dust, WOPC, WLPC) have been used, the measurements are further divided into instrument folders.
</p
Iowa - US Physical Education and Physical Activity Policy (US-PEPAP) Implementation Surveillance Data
No full textUS-PEPAP Iowa DataWhile summary of the existence of US state policies regarding physical education and physical activity are available, measures of the policy implementation are rare therefore, the US-PEPAP implementation survey was designed to capture accurate and up to date information on physical education and physical activity policy implementation in schools as reported directly by physical educators. A secondary purpose of this work was to engage physical educators, university researchers, and other proponents of lifelong physical activity in becoming advocates for more favorable policy in each of the 50 US states