cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.4231/3yx4-ey30
title: Data of global wetland methane emissions from artificial neural network modeling v1.0

description: &lt;p&gt;Methane (CH&lt;sub&gt;4&lt;/sub&gt;) emissions from wetland ecosystems exert large positive feedbacks to the global climate system. However, the estimation of wetland CH&lt;sub&gt;4&lt;/sub&gt; emissions at the global scale still has large uncertainties. Here we develop a predictive model of CH&lt;sub&gt;4&lt;/sub&gt; emissions using an artificial neural network (ANN) approach and available field observations of CH&lt;sub&gt;4&lt;/sub&gt; fluxes. This study first uses an ANN approach to find the optimal nonlinear regression between CH&lt;sub&gt;4&lt;/sub&gt; fluxes and key environmental controls. Driven with the spatially explicit data of climate, hydrology and soil properties, the developed ANN is then extrapolated to the global scale to estimate wetland CH&lt;sub&gt;4&lt;/sub&gt; emissions during a historical period 1979-2018 and a future period of 2006-2099. The entire simulation was conducted in a Linux environment. The supercomputing was provided by the Rosen Center for Advanced Computing at Purdue University. The ANN model was achieved using Matlab. The input data, output data and visualizations were processed using (Interactive Data Language (IDL). In this data archive, we provide all data related to the manuscript &quot;Inventorying Global Wetland Methane Emissions Based on In Situ Data and an Artificial Neural Network Approach&quot;.&lt;/p&gt;
description: Source code of an ANN model, site level data, input data, output data and visualization results, which are presented in the manuscript "Inventorying Global Wetland Methane Emissions Based on In Situ Data and an Artificial Neural Network...
DOI: 10.4231/16nt-cw47
title: Soil responses to manipulated precipitation changes: A synthesis of meta-analyses

description: lt;pgt;In the face of ongoing and projected precipitation changes, precipitation manipulation experiments have produced a wealth of data about the effects of precipitation changes on soils. In response, researchers have undertaken a number of synthetic efforts. Several meta-analyses have been conducted, each revealing new aspects of soil responses to precipitation changes. We synthesize the findings of 16 meta-analyses focused on the effects of decreased and increased precipitation on 42 soil response variables, covering a wide range of soil processes and examining responses of individual variables as well as more integrative responses of carbon and nitrogen cycles.lt;/pgt;
description: We collected 16 meta-analyses published prior to April 2019 that examined soil responses to manipulated precipitation changes. This is the data of these meta-analyses, including effect sizes, confidence intervals, and sample sizes of 42 soil...
DOI: 10.4231/1wb1-mn86
title: Rest-activity patterns and saliva cortisol rhythms during gestational weeks 22 and 32 and postpartum week 1

description: &lt;p&gt;Study was conducted to determine if there was evidence for a relationship between 24 h rest-activity and saliva cortisol rhythms with maternal-fetal health indicators. Primiparous women wore a wrist actigraphy device for a week to record activity during gestational weeks 22 (G22; &lt;em&gt;n &lt;/em&gt;= 50) and 32 (G32; &lt;em&gt;n &lt;/em&gt;= 46) and postpartum week one (PPW1; n=39). Participants also collected saliva samples every 4 hr over a 24 hr period during G22 (n=22), G32 (n=20) and 24-48 hr postnatal (n= 20), and cortisol concentrations were measured with ELISA. Circadian rhythmicity was assessed using autocorrelation coefficient (&lt;em&gt;r&lt;/em&gt;24) and cosinor analysis.  Blood glucose levels, body mass index (BMI), gestational disease data, and gestational age of infant at birth were abstracted from medical charts. Mean &lt;em&gt;r&lt;/em&gt;24, mesor (mean) and amplitude of activity decreased between G22 and G32, and G32 and PPW1 (&lt;em&gt;p &lt; &lt;/em&gt;.05).  Cortisol rhythms were not different between G22 and G32, however area under the curve (AUC) and mesor were decreased (&lt;em&gt;p &lt; &lt;/em&gt;.05) between G32 and 24-48 hr postpartum. More robust rest-activity rhythms during G32 were positively (&lt;em&gt;p&lt;/em&gt;=0.003) associated with gestational age of infant at birth.  Time of cortisol peak (acrophase) during G22 was related with acrophase of activity (&lt;em&gt;r&lt;/em&gt;=0.66; &lt;em&gt;p&lt;/em&gt; = 0.001) and blood glucose levels (&lt;em&gt;r&lt;/em&gt;= 0.58; &lt;em&gt;p&lt;/em&gt;=0.006).  During G22, minutes of wake after sleep onset was positively related to cortisol mesor and AUC (&lt;em&gt;p &lt;/em&gt;&lt;0.05). Across all three time points &lt;em&gt;r&lt;/em&gt;24 of activity was related with cortisol amplitude (&lt;em&gt;r&lt;/em&gt;=0.33; &lt;em&gt;p&lt;/em&gt;=0.01). The association of less robust activity rhythms with earlier gestational age of infant at birth supports the potential that circadian system disruption is linked to maternal-fetal health outcomes. Further investigations are needed to understand the interaction among rest-activity and the metabolic-hormonal system during pregnancy and their association with maternal-fetal health outcomes.&lt;/p&gt;

&lt;p&gt; &lt;/p&gt;
description: 24 h rest-activity and saliva cortisol rhythms in primiparous women during pregnancy and postpartum
DOI: 10.4231/ycwy-4g65
title: Data of soil greenhouse gas emissions and soybean growth from a biochar-amended precipitation manipulation experiment

description: &lt;p&gt;We studied the effects of 30 t ha&lt;sup&gt;-1&lt;/sup&gt; of added biochar on soil greenhouse gas (GHG) fluxes and soybean (&lt;em&gt;Glycine max&lt;/em&gt; (L.) Merr.) growth in the field under ambient and variable precipitation patterns (repeated one-month dry periods separated by heavy rain events), and also studied GHG emissions from wetted field soils in the laboratory. The experiment was conducted during the growing season of 2017 at Purdue University&#39;s Agronomy Center for Research and Education (ACRE; near West Lafayette, IN).&lt;/p&gt;
description: We recorded soil greenhouse gas emissions and soybean growth in a field experiment where precipitation intensity was manipulated and biochar was added during the growing season of 2017.
DOI: 10.4231/y00z-n127
title: Arequipa Climate Maps - Yearly, Monthly and Daily

description: &lt;div class="pub-content"&gt;
&lt;p&gt;Climate is a powerful driver of agricultural and natural systems, and spatial climate data sets in digital form are currently in great demand. This is especially true in the Arequipa department of Peru, a region with low seasonal precipitation, significant topographic variability, and high demand for water resources in highly managed water systems. This dataset contains 30 years of annual, monthly and daily gridded climate maps of precipitation and maximum and minimum air temperature from January 1, 1988, to December 31, 2017. It was created using weather station data from the Servicio Nacional de Meteorolog&iacute;a e Hidrolog&iacute;a del Per&uacute; (SENAMHI) and the National Ocean and Atmospheric Administration&rsquo;s (NOAA) Global Summary of the Day (GSOD). Topography data, used as covariates for spatial interpolation, came from the ALOS World 3D DEM. Weather data went through extensive preprocessing for removal of implausible values and data gap filling using a nearest-neighbor method bounded by elevation. Maps were created using a Regression Kriging (RK) method that made use of Polynomial Regression Models specifically developed for the region.&lt;/p&gt;

&lt;p&gt;A manuscript entitled &ldquo;Terrain sensitive climate maps for Arequipa region, Peru,&rdquo; is under development and when published will contain information about the development of this dataset.&lt;/p&gt;

&lt;p&gt;This dataset was developed by the Center for Sustainable Watershed Management of the Arequipa Nexus Institute (&lt;a href="https://www.purdue.edu/discoverypark/arequipa-nexus/en/index.php" rel="nofollow noreferrer" target="_blank"&gt;https://www.purdue.edu/discoverypark/arequipa-nexus/en/index.php&lt;/a&gt;)&lt;/p&gt;
&lt;/div&gt;
description: Arequipa Climate Maps – Yearly, Monthly and Daily (ACM-YMD), contains 30 years (1988-2017) of annual, monthly and daily gridded climate maps based on daily precipitation, and maximum and minimum air temperature for the Arequipa Department in Peru.
DOI: 10.4231/g5gz-0505
title: Private International Cartels Full Data 2019 edition

description: &lt;p&gt;The Private International Cartels (PIC) Data Set comprises the largest known collection of legal-economic information on contemporary price-fixing cartels. This spreadsheet covers 1990 to 2012 economic data in a Microsoft Excel spreadsheet. It is accompanied by a Data Guide that details the scope, strengths, and limitations of the data. The Guide also analyses the size of injuries caused by and antitrust penalties imposed on contemporary price-fixing cartels.&lt;/p&gt;

&lt;p&gt;Pages 2 and 3 of the spreadsheet show currency exchange rates and, importantly, a list of footnotes and abbreviations such as two-digit industry codes and alphabetic country codes.&lt;/p&gt;
description: The Private International Cartels (PIC) Data Set comprises the largest collection of legal-economic information on contemporary price-fixing cartels. This subset of the data collection covers 1990 to 2019.
DOI: 10.4231/q5ae-xk39
title: Data from: Perfluoroalkyl substances increase susceptibility of northern leopard frog tadpoles to trematode infection

description: &lt;p&gt;Per/polyfluoroalkyl substances (PFAS) are contaminants of emerging concern that can impair immune function, yet few studies have tested whether exposure increases infection risk.  Using laboratory experiments, we found that exposure to 10 ppb of perfluorohexanesulfonic acid increased trematode (&lt;i&gt;Echinoparyphium&lt;/i&gt;lineage 3) infectionsin larval northern leopard frogs (&lt;i&gt;Lithobates pipiens&lt;/i&gt;). However, there was no effect of perfluorooctanesulfonic acid. Our results demonstrate that PFAS can potentially enhance infection risk in natural systems. &lt;/p&gt;
description: These data correspond to a paper entitled "Perfluoroalkyl substances increase susceptibility of northern leopard frog tadpoles to trematode infection" by Brown et al. published in Environmental Toxicology & Chemistry.
DOI: 10.4231/xzam-wm86
title: Data for: Chronic PFAS-exposure under environmentally relevant conditions delays development in northern leopard frog (Rana pipiens) larvae

description: &lt;p&gt;Perfluoroalkyl substances (PFAS) are pervasive in aquatic systems globally and capable of causing detrimental effects on human and wildlife health. However, most studies are conducted under artificial conditions that are not representative of environmental exposures. Environmental exposures are characterized by multiple routes of exposure, low aquatic PFAS levels, and greater environmental variability than laboratory tests. Determining whether these factors influence toxicity is critical for understanding the effects of PFAS on aquatic life, including amphibians. Our goal was to assess the impact of PFAS on an amphibian under semi-realistic conditions. We reared northern leopard frog (&lt;em&gt;Rana pipiens&lt;/em&gt;) larvae in outdoor mesocosms containing sediment spiked to low, medium, and high levels (nominally 10, 100, or 1000 ppb dw) of perfluorooctanesulfonic acid (PFOS) or perfluorooctanoic acid (PFOA) for 30 days. Larvae in all PFOS treatments and the medium-PFOA treatment were ~1.5 Gosner stages less developed than control animals after 30 days. Notably, these developmental delays were observed at PFOS concentrations in the water as low as 0.06 ppb, which is considerably lower than levels associated with developmental effects in laboratory studies. Our results suggest that deriving toxicity values from laboratory studies examining aquatic exposure only may underestimate the effects of environmental PFAS exposure. &lt;/p&gt;
description: These data correspond to a paper entitled "Chronic PFAS-exposure under environmentally relevant conditions delays development in northern leopard frog (Rana pipiens) larvae" by Flynn et al. published in Environmental Toxicology &...
DOI: 10.4231/phkh-4334
title: Alfalfa Variety Trial Database, 1986-1999

description: &lt;p&gt;The dataset contain archived copy of the Alfalfa Variety Performance Database originally compiled in 2000 by Daniel W. Wiersma and Wayne G. Hartman that contains forage yield and quality results, and plant stand estimates from over 700 alfalfa variety tests conducted by researchers in the US and Canada from 1986 through 1999. The database was used to analyze long-term trends in genetic improvement of alfalfa yield and agronomic performance.&lt;/p&gt;

&lt;p&gt;Data were originally compiled in an Access database. This publication contains the database both in the Access database format (*.mdb) and as mysql dump (*mysql). The *.mdb file was fully operational in the version Access 2019 and the mysql data were successfully inserted into a MySQL data prior to their archiving. In addition, the data in individual tables were exported as a set of twenty one CSV files (plus two edited files) that were also preserved in this dataset.&lt;/p&gt;

&lt;p&gt;Four additional datasets were created from the database tables and published in PURR. The alfalfa variety metadata dataset contains descriptors and characteristic of over 2900 alfalfa varieties and experimental lines used in these variety trials. Three companion datasets extracted from the original  database contain the yield, forage quality, and stand persistence data.&lt;/p&gt;
description: An archived copy of the Alfalfa Variety Performance Database originally compiled in 2000 by Daniel W. Wiersma and Wayne G. Hartman. It contains data on yield, quality, and plant stand for over 2900 varieties from 700+ experiments conducted from...
DOI: 10.4231/mv4d-ff43
title: Spotted knapweed spread and plant community changes in a lacustrine dune system

description: &lt;p&gt;Perched sand dunes are vulnerable ecosystems along the Great Lakes, including Grand Sable Dunes in Pictured Rocks National Lakeshore. Spotted knapweed is a non-native plant species that has colonized these dunes and spread into increasingly more areas of the ecosystem. I conducted plant surveys in areas with and without spotted knapweed in 2003, and then resurveyed those areas in 2018. Frequency of spotted knapweed increased in both areas surveyed. Additionally, dominance shifted with spotted knapweed becoming the most important species in the area originally invaded and third most important in the area originally uninvaded. There were approximately 2/3 of species shared between the two survey years, but twelve of 29 species added in 2018 were woody. Species richness increased between years, as did species diversity. Nonmetric multidimensional scaling ordination displayed community shifts as convergent succession. While the plant communities in the two areas were rather dissimilar in 2003, they converged as overlapping communities in 2018. Additionally, the shift between years in the area originally invaded was smaller compared to the shift between years in the area originally uninvaded. Due to the continuous evolution of plant communities within sand dune ecosystems, there is a need to monitor changes and quantify non-native species spread patterns. Dominance by spotted knapweed may be facilitating dune stabilization and converging communities along a modified successional trajectory.&lt;/p&gt;
description: Spotted knapwed is a non-native species that has colonized the Grand Sable Dunes. Between survey years (2003-2018), it has become a dominant, important species in areas once uninvaded, may be facilitating stabilization and converging communities.
DOI: 10.4231/1pet-1k76
title: Data for: Sublethal effects of dermal exposure to poly- and perfluoroalkyl substances on post-metamorphic amphibians

description: &lt;p align="left"&gt;Studies of poly- and perfluoroalkyl substances (PFAS) toxicity on amphibians, especially post metamorphosis, are limited. We examined effects of dermal PFAS exposure (30 d) on survival and growth of juvenile American toads (&lt;em&gt;Anaxyrus americanus&lt;/em&gt;), eastern tiger salamanders (&lt;em&gt;Ambystoma tigrinum&lt;/em&gt;) and northern leopard frogs (&lt;em&gt;Rana pipiens&lt;/em&gt;). Exposures included perfluorooctanoic acid (PFOA), perfluorooctane sulfonate (PFOS), perfluorohexane sulfonate (PFHxS) and 6:2 fluorotelomer sulfonate (6:2 FTS) at 0, 80, 800, or 8000 ppb on a moss dry weight basis. Exposure to PFAS influenced final snout-vent length (SVL) and scaled mass index (SMI), a measure of relative body condition. Observed effects depended on species and chemical, but not concentration. Anurans exposed to PFOS, PFHxS (frogs only), and 6:2 FTS reduced SVL versus controls, while salamanders exposed to 6:2 FTS increased SVL. Frogs exposed to PFHxS and 6:2 FTS, and toads exposed to PFOS had increased SMI compared to controls, salamanders did not demonstrate effects. Concentrations of 6:2 FTS in substrate decreased substantially by 30 d, likely driven by microbial action. PFOS had notable biota-sediment accumulation factors, but still &lt; 1. While a no-observable-effect concentration could not generally be determined, the lowest observable effect concentration was 50 - 120 ppb. Survival was not affected. Our work demonstrates that PFAS bioaccumulation from dermal exposures and sublethal effects are dependent on species, chemical, and focal trait. &lt;/p&gt;
description: These data correspond to a paper entitled "Sublethal effects of dermal exposure to poly- and perfluoroalkyl substances on post-metamorphic amphibians" by Abercrombie et al. published in Environmental Toxicology & Chemistry
DOI: 10.4231/zys8-cw17
title: Precipitation stable isotopes from West Lafayette, IN, collection from Sep 8, 2015 to Jun 21, 2018

description: &lt;p&gt;&lt;span style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); font-family: Calibri, sans-serif; font-size: 14.666666984558105px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-tap-highlight-color: rgba(0, 0, 0, 0.4); -webkit-text-stroke-width: 0px; text-decoration: none; display: inline !important; float: none;"&gt;Precipitation samples are collected in West Lafayette, IN in a simple rain gauge emptied shortly after events. The intent of this sampling is to be event based, not strictly 24-hour daily intervals. Samples are analyzed for hydrogen (dD) and oxygen (d18O) stable isotope ratios in Prof. Lisa Welp&rsquo;s lab at Purdue University in the department of Earth, Atmospheric, and Planetary Sciences. This dataset can be used to study precipitation moisture sources, storm types, and characterize local precipitation for isotope hydrology studies. Data in this version spans September 8, 2015 to June 21, 2018.&lt;/span&gt;&lt;/p&gt;
description: Event-based precipitation samples collected in West Lafayette, Indiana in a simple rain gauge. Precipitation is analyzed for hydrogen and oxygen stable isotope ratios in Prof. Lisa Welp’s lab at Purdue University in the EAPS department.
DOI: 10.4231/p4dk-s911
title: Crop Insurance 2018 Farmer Survey Dataset

description: &lt;p&gt;The Crop Insurance 2018 Farmer Survey intended to understand Midwest corn producers&rsquo; perspectives and behavior regarding crop insurance and conservation practices. This project was conducted by Purdue University with support from Iowa State University and funded by the United States Department of Agriculture-National Institute of Food and Agriculture (USDA-NIFA Award #: 2017-67026-26317). Producers across Indiana, Illinois, and Iowa were surveyed.&lt;/p&gt;
description: The Crop Insurance 2018 Farmer Survey intended to understand Midwest corn producers’ perspectives and behavior regarding crop insurance and conservation practices. Producers across Indiana, Illinois, and Iowa were surveyed.
DOI: 10.4231/c5p0-3592
title: Gephi Tutorial Data - Mapping Topics in Philosophy Lectures by Gilles Deleuze

description: &lt;p&gt;This data accompanies a learning activity using Gephi, an open-source graphing tool, to visualize connections between topics in the work of French philosopher Gilles Deleuze. [link to activity to be added when it&#39;s available in Sept 2020]&lt;/p&gt;

&lt;p&gt;French philosopher Gilles Deleuze was one of the most influential and prolific thinkers of the second half of the twentieth century. In addition to his numerous published works, Deleuze&rsquo;s legacy includes hundreds of hours of audio recordings of his graduate seminars given at the University of Paris VIII, and their transcriptions, many of which are available in PURR. Each lecture in PURR was carefully indexed, in English, with tags referencing the subject matter covered and any prominent figures mentioned. The associated Gephi activity uses those tags to create a mind map of Deleuze&#39;s thinking, and provide a new avenue for insight into his work.&lt;/p&gt;

&lt;p&gt;This dataset includes tag data from the five Deleuze seminars published in PURR as of 2018:&lt;/p&gt;

&lt;ul&gt;
 &lt;li&gt;Anti-Oedipus and Other Reflections (&lt;a href="https://doi.org/10.4231/R76M352T"&gt;10.4231/R76M352T&lt;/a&gt;)&lt;/li&gt;
 &lt;li&gt;Spinoza: the Velocities of Thought (&lt;a href="https://doi.org/10.4231/R7X63K6Z"&gt;10.4231/R7X63K6Z&lt;/a&gt;)&lt;/li&gt;
 &lt;li&gt;Painting and the Question of Concepts (&lt;a href="https://doi.org/10.4231/R72V2DCJ"&gt;10.4231/R72V2DCJ&lt;/a&gt;)&lt;/li&gt;
 &lt;li&gt;The Movement Image: Bergsonian Lessons on Cinema (&lt;a href="https://doi.org/10.4231/R75B00Q2"&gt;10.4231/R75B00Q2&lt;/a&gt;)&lt;/li&gt;
 &lt;li&gt;Foucault (&lt;a href="https://doi.org/10.4231/R7SF2TFS"&gt;10.4231/R7SF2TFS&lt;/a&gt;)&lt;/li&gt;
&lt;/ul&gt;

&lt;p&gt;There are two csv files for each seminar: nodes and edges. Nodes files contain a deduplicated list of all tags associated with the lectures in that seminar, each with a numberical ID. Edges files contain pairs of connected nodes using node IDs.&lt;/p&gt;

&lt;p&gt;See &lt;a data-external="true" draggable="false" href="https://purr.purdue.edu/groups/deleuze/about_the_seminars" target="_blank"&gt;the Deleuze group page in PURR&lt;/a&gt; for more information about the research this dataset and activity are based on.&lt;/p&gt;
description: This data accompanies a learning activity using Gephi, an open-source graphing tool, to visualize connections between topics in the work of French philosopher Gilles Deleuze.
DOI: 10.4231/17yy-mc20
title: Gauss quadrature and Christoffel function for Jacobi weight functions

description: &lt;p&gt;MATLAB scripts are provided for generating to any given accuracy &lt;em&gt;n&lt;/em&gt;-point Gauss quadrature rules, &lt;em&gt;n&lt;/em&gt; &ge; 1, relative to Jacobi weight functions as well as  approximations for the quadrature weights and respective errors. For selected values of the Jacobi parameters, approximations and respective errors are also provided for the associated Christoffel function.&lt;/p&gt;
description: A set of MATLAB scripts related to Gauss quadrature and the Christoffel function for Jacobi weight functions
DOI: 10.4231/wzw1-x214
title: Gauss quadrature and Christoffel function for the coerror weight function

description: &lt;p&gt;MATLAB software is provided for generating to any given accuracy &lt;em&gt;n&lt;/em&gt;-point Gauss quadrature rules, &lt;em&gt;n &lt;/em&gt;&ge; 1, relative to the coerror weight function as well as approximations and respective errors for the quadrature weights and for the Christoffel function.&lt;/p&gt;
description: A set of MATLAB scripts related to Gauss quadrature and Christoffel function for the coerror weight function