cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.13020/hfb0-dd13
title: APAL "Sensitivity to changes in dynamic affordances for walking on land and at sea" Data Sets

description: We investigated the perception of affordances for walking along a narrow path.
We asked whether participants could perceive changes in affordances brought about by
manipulation of properties of the body, or of the environment, without direct practice of
the to-be-perceived affordance, and without external feedback about the accuracy of
perception. In Experiment 1, participants made a series of 8 judgments of how far they
could walk along a narrow path either, 1) without added weight, 2) while wearing a
weighted vest, or 3) while wearing weights on their ankles. Before walking, mean
judgments were lower when wearing weights than in the no-weight condition. In
addition, in both weight conditions judgments changed across the series of 8 judgments,
in the direction of greater accuracy. Control of the body in walking also can be
influenced by motion of the ground surface, as commonly happens in vehicles. In
Experiment 2, on a ship at sea, we evaluated the effects of walking with or without
weight added to the body at the ankles. We again asked participants (experienced
maritime crewmembers) to judge how far they could walk along a narrow path, with
versus without ankle weights. As in Experiment 1, judgments made before walking
mirrored the observed differences in walking performance. In addition, we again found
evidence that judgment improved (without walking practice, or feedback) over the series
of judgments. We conclude that participants were sensitive to (and spontaneously
learned about) how affordances for walking were influenced by changes in the
dynamics of body and the environment.
description: Data is divided into two major sets: Experiment 1 (Terrestrial) and Experiment 2 (Nautical). Each set contains an excel file of raw judgments and performance values collected during the experiments.
DOI: 10.6084/m9.figshare.5904655.v2
title: Post-thaw variability in litter decomposition best explained by microtopography at an ice-rich permafrost peatland

description: Litter decomposition, a key process by which recently fixed carbon is lost from ecosystems, is a function of environmental conditions and plant community characteristics. In ice-rich peatlands, permafrost thaw introduces high variability in both abiotic and biotic factors, both of which may affect litter decomposition rates in different ways. Can the existing conceptual frameworks of litter decomposition and its controls be applied across a structurally heterogeneous thaw gradient? We investigated the variability in litter decomposition and its predictors at the Stordalen subarctic peatland in northern Sweden. We measured <i>in situ</i> decomposition of representative litter and environments using litter bags throughout two years. We found highly variable litter decomposition rates with turnover times ranging from five months to four years. Surface elevation was a strong correlate of litter decomposition across the landscape, likely as it integrates multiple environmental and plant community changes brought about by thaw. There was faster decomposition but also more mass remaining after two years in thawed areas relative to permafrost areas, suggesting faster initial loss of carbon but more storage into the slow-decomposing carbon pool. Our results highlight mechanisms and predictors of carbon cycle changes in ice-rich peatlands following permafrost thaw.
DOI: 10.6084/m9.figshare.6510104.v2
title: Reconstructing Greenland Ice Sheet meltwater discharge through the Watson River (1949–2017)

description: Ice-sheet melting is the primary water source for the proglacial Watson River in southern west Greenland. Discharge from the large, approximately 12,000 km<sup>2</sup> ice-sheet catchment draining through the Watson River has been monitored since 2006. While this record is of respectable length for a Greenland monitoring effort, it is too short to resolve climate signals. Therefore, we use observed Tasersiaq lake discharge and Kangerlussuaq air temperature to reconstruct annual Watson River discharge back to 1949. The resulting sixty-five-year record shows that average ice-sheet runoff since 2003 has roughly increased by 46 percent relative to the 1949–2002 period. The time series suggests that the five top-ranking discharge years occurred since 2003. The three top-ranking discharge years (2010, 2012, and 2016) are characterized by melt seasons that were both long and intense. Interannual variability more than doubled since 2003, which we speculate to be because of hypsometric runoff amplification enhanced by albedo decrease and decreased firn permeability. The reconstructed time series proves to be a valuable tool for long-term evaluation of Greenland Ice Sheet surface mass balance models. A comparison with freshwater fluxes calculated by a downscaled version of the regional climate model RACMO2 reveals high correlation (<i>r</i> = 0.89), and also shows that the model possibly underestimates runoff by up to 26 percent in above-average melt years.
DOI: 10.6084/m9.figshare.6166292.v2
title: Spatial variation in stable isotopic composition of organic matter of macrophytes and sediments from a small Arctic lake in west Greenland

description: Stable isotope compositions of organic carbon (δ<sup>13</sup>C<sub>org</sub>) and nitrogen (δ<sup>15</sup>N) in macrophytes and sediments are useful in assessing sources of lake productivity and diagenesis of organic matter from formation through sedimentation to decomposition. Despite the increasing importance of high-latitude landscapes to carbon cycling under amplified and accelerating warming in the Arctic, the high density of small closed-basin lakes in this landscape, and the utility of stable isotopes in the study of carbon dynamics, limited data are available on within-lake spatial variability of δ<sup>13</sup>C<sub>org</sub> and δ<sup>15</sup>N in these systems. The goal of this study was to investigate the spatial variability in stable isotopic composition of three dominant macrophyte species (<i>Hippuris vulgaris, Eriophorum angustifolium, Warnstorfia exannulata</i>) and sediments from littoral and profundal areas of a single closed-basin system among the common small Arctic lakes that populate the ice-free margin of Greenland. The range in δ<sup>13</sup>C<sub>org</sub> of macrophytes (−33.9‰ to −27.1‰) was within the typical range of plants utilizing the C<sub>3</sub> pathway for carbon fixation. No notable differences were observed in δ<sup>13</sup>C<sub>org</sub> between segments of the individual macrophytes (emergent, submergent, and root tissues), indicating that the isotopic fractionation of carbon was similar throughout the plant. Between-species variations in δ<sup>13</sup>C<sub>org</sub> were small, but significant (<i>p </i>13C. The range of δ<sup>15</sup>N in littoral and profundal sediments (−0.52‰ to 1.33‰) was small, with littoral surface sediments 1‰ less enriched in <sup>15</sup>N than surface sediments in the profundal zone. The C/N ratios of macrophytes (mean ± SD: 27.0 ± 12.6), littoral sediments (mean ± SD: 11.0 ± 1.0), and profundal sediments (mean ± SD: 9.1 ± 0.9) point to diagenetic alteration. Combined isotopic and elemental (C/N) compositions of littoral and profundal sediments suggest that organic matter accumulating in the study lake originate primarily from in-lake primary production of macrophytes. Terrestrial sources are likely minor because of the hydrologically closed basin and limited aeolian inputs, suggesting that the majority of organic matter produced by the dominant littoral macrophyte community was decomposed between production and sediment deposition.
DOI: 10.13020/j6sj-jw18
title: Data for: Decades of tree planting in Northern India had little effect on forest canopy cover and rural livelihoods

description: This contains data from three sources: 1. Remote sensing-based analysis of land cover and land use change in the Kangra district of Himachal Pradesh, India, with a focus on government run tree plantations we mapped in the region that had occurred between 1980 and 2018, were located in 60 randomly sampled panchayats (local governments), and were at least 5 HA in size. We also have supplemental information on these plantations provided by the local informants who helped map them (e.g. such as the date of establishment and the involvement of local communities in planting them) 2. A survey of Panchayat characteristics across 60 randomly sampled panchayats in Kangra District 3. A random sample survey of 40 households in each of the 60 panchayats, focusing on household livelihood needs and their relationship to forests and tree plantations in terms of both livelihood related uses (e.g. fuelwood, fodder, and grazing) and forest governance. Viewing these data sources together enable us to understand the relationships between land use change as driven by government plantations, local governance, and livelihoods.
description: This contains data from three sources:
1. Remote sensing-based analysis of land cover and land use change in the Kangra district of Himachal Pradesh, India, with a focus on government run tree plantations we mapped in the region that had occurred between 1980 and 2018, were located in 60 randomly sampled panchayats (local governments), and were at least 5 HA in size. We also have supplemental information on these plantations provided by the local informants who helped map them (e.g. such as the date of establishment and the involvement of local communities in planting them)
2. A survey of Panchayat characteristics across 60 randomly sampled panchayats in Kangra District
3. A random sample survey of 40 households in each of the 60 panchayats, focusing on household livelihood needs and their relationship to forests and tree plantations in terms of both livelihood related uses (e.g. fuelwood, fodder, and grazing) and forest governance. 
Viewing these data sources together enable us to understand the relationships between land use change as driven by government plantations, local governance, and livelihoods.
DOI: 10.6084/m9.figshare.5979514.v3
title: Pollen limitation and reproduction of three plant species across a temperature gradient in western Greenland

description: Rapid climate change in the Arctic may increase sexual reproduction in plants because of changes in both abiotic factors, such as temperature, and biotic factors, such as pollination. Pollination may currently limit plant reproduction in the Arctic, where cold temperatures hinder pollinator activity. To understand how warming may affect pollination and plant reproduction, we studied three plant species in western Greenland. Two species were hermaphroditic and insect-pollinated (<i>Vaccinium uliginosum</i> and <i>Chamerion latifolium</i>), and one was dioecious and insect- and wind-pollinated (<i>Salix glauca</i>). We measured how pollinator visitation and plant reproduction varied across three temperature zones. We also conducted pollinator exclusion and pollen supplementation experiments to measure pollinator dependence and pollen limitation. Proportion of fruit set in <i>Vaccinium</i> and <i>Salix</i> was pollen limited in every temperature zone, and <i>Vaccinium</i> and <i>Chamerion</i> depended on pollinator-mediated outcrossing for maximum reproductive success. Furthermore, higher pollinator visitation to <i>Vaccinium</i> in the warmer temperature zones mirrored lower pollen limitation and higher fruit set, suggesting that temperature zone indirectly influenced reproduction via changes in pollination. Taken together, our results demonstrate that both abiotic factors and pollination are important in limiting reproduction in the Arctic and that plant–pollinator interactions can mediate the response of plant reproduction to warming.
DOI: 10.13020/wac6-s078
title: Supporting data for "Efficient Polymerization of Methyl-ε-Caprolactone Mixtures to Access Sustainable Aliphatic Polyesters"

description: These files contain primary data along with associated output from instrumentation supporting all results reported in Batiste et. al. "Efficient Polymerization of Methyl-ε-Caprolactone Mixtures to Access Sustainable Aliphatic Polyesters." In Batiste et. al. we found: Aliphatic polyesters are a versatile class of materials that can be sourced from bioderived feedstocks. Poly(γ-methyl-ε-caprolactone) (PγMCL) in particular can be used to make degradable thermoplastic elastomers (TPEs) with outstanding mechanical properties. PγMCL can potentially be manufactured economically from p-cresol, a component of lignin bio oils. A complication is that additional manufacturing processes are necessary to isolate pure cresol isomers. Using mixed feedstocks of cresol isomers to access the corresponding methyl substituted ε-caprolactone (MCL) monomer mixtures would convey economic advantages to sourcing these materials sustainably. Moreover, the use of organocatalysts in lieu of traditional tin-based catalysts averts issues with potential environmental and human toxicity. With these motivations in mind, we explored the ring-opening transesterification polymerization (ROTEP) of MCL mixtures and characterized the molecular, thermal and rheological properties of the resulting copolymers. The molar mass of MCL mixtures that would be obtained from meta- and para-cresol can be readily modulated. The thermal and rheological properties of these statistical co- and terpolymers were at parity with pure PγMCL homopolymer. The use of diphenyl phosphate (DPP) and dimethyl phosphate (DMP) as organocatalysts enabled access to these materials on reasonable polymerization timescales and have potential to improve sustainability in the synthesis of these polyesters.
description: The folder below includes NMR, SEC, TGA, DSC, MALDI, and DMTA data for all reported samples. The zipped folder contains a series of subfolders with the data for each scheme, figure, or table, organized by the order in which each of these elements appear in the manuscript and supporting information document.             PrimaryData.zip and PrimaryData.RAR are the same files and data. The zip-formatted file may present an error to users working with a Windows OS, but can still be opened using a third-party program such as 7zip. This error should not occur for users using a Mac OS.
DOI: 10.13020/qsa6-qg08
title: Data for Superlattice by charged block copolymer self-assembly

description: These files contain data along with the associated output from instrumentation supporting all results reported in "Superlattice by charged block copolymer self-assembly" by Shim et. al. We report the discovery of an intriguing superlattice morphology from compositionally symmetric charged block copolymers, poly[(oligo(ethylene glycol) methyl ether methacrylate–co–oligo(ethylene glycol) propyl sodium sulfonate methacrylate)]–b–polystyrene (POEGMA–PS). These materials are conveniently prepared by sequential reversible addition–fragmentation chain transfer (RAFT) polymerization, followed by introduction of charged groups, in a manner that allows for systematic variation of the molecular structure in general, and the charge content in particular. POEGMA–PS self-assembles into a superlattice lamellar morphology, a previously unknown class of diblock nanostructures, but strikingly similar to oxygen-deficient perovskite derivatives, when the fraction of charged groups in the POEGMA block is about 5–25%. The charge fraction in the POEGMA block, and the tethering of the ionic groups, both play critical roles in driving the formation of the superlattice. This study highlights the accessibility of novel morphologies by introducing charges in a controlled manner.
description: The file includes the X-ray scattering data, determination of reactivity ratios, polymerization kinetics, NMR, SEC, Bjerrum length, and probability distribution profile data for all reported figures. The readme file further describes the individual data.
DOI: 10.13020/m21j-ww77
title:  Supplementary video recording of carp feeding aggregations at corn baited feeding sites in a nearby lake in New Brighton, Minnesota, USA 

description: Supplementary video recording showing carp feeding as reference for the paper: Social associations in common carp (Cyprinus carpio): insights from induced feeding aggregations for targeted management strategies. Included is one video from 26 September 2018.
description: A video recording of carp feeding aggregations at corn baited feedings sites in New Brighton, Minnesota, USA (Long Lake: 69.8 hectare, maximum depth 8 m, ~ 45km NE of Parley Lake). Videos were recorded using a Micro plus 5 camera (Aqua-Vu, Brainerd, MN, USA), placed ~1m from the bait. Videos were recorded between 16:00 and 22:00 in 2018 (26, 28 September & 1,2,7 October). We have included one video from 26 September 2018 to help visualize carp group feeding at a bait
DOI: 10.13020/d68591
title: Data from "Evaluation of omission testing as a method for identifying important odorants in a mixture"

description: The data is the raw data from the thesis titled "Evaluation of omission testing as a method for identifying important odorants in a mixture."  The research was completed in two phases.  In the first phase, intensity matching, the participants evaluated varying concentrations of each of four different compounds in comparison to a standard using a 150 mm line scale.  The raw data can be used to determine the concentration of each compound matching the perceived intensity of the standard for each panelist.  In the second phase, omission testing, the participants evaluated 20 samples in each of 20 sessions using A-Not-A tests.  The samples included mixtures of all five compounds, mixtures with one omitted compound, and mixtures with two omitted compounds.  The data can be used to evaluate the effectiveness of omission testing.
DOI: 10.13020/7743-vf17
title: Data for "Taking a Diversity, Equity, Inclusion & Accessibility Lens to Engineering Librarian Job Postings: Recommendations from an Analysis of Postings from 2018 and 2019"

description: While diversity, equity, inclusion and accessibility (DEIA) principles and practices have been incorporated into much of academic librarianship, there has been less focus on the hiring process. In order to quantify ways in which DEIA is being integrated into the hiring process, we analyzed 48 job positions for engineering librarians (posted in 2018 and 2019) via deductive thematic analysis, looking for trends in salary and qualifications related to education and academic or professional experience.
description: We collected engineering librarian job postings that were posted from January 1, 2018 to December 31, 2019 and analyzed them via deductive thematic analysis. To determine patterns in the salary and qualifications related to education and academic or professional experience for engineering librarian positions. A codebook of variables and attributes for each variable was created prior to analyzing the job positions, based on previously published codebooks (Hall-Ellis 2005, 2006; Thielen & Neeser 2020). Supporting information for this study, including the codebook of 16 variables and corresponding attributes.
DOI: 10.13020/han6-ac59
title: Supporting data for "Impact of macromonomer molar mass and feed composition on branch distributions in model graft copolymerizations"

description: These files contain primary data along with associated output from instrumentation supporting all results reported in the referenced manuscript. Graft polymers are useful in a versatile range of material applications. Understanding how changes to the grafted architecture, such as the grafting density (z), the side-chain degree of polymerization (Nsc), and the backbone degree of polymerization (Nbb), affect polymer properties is critical for accurately tuning material performance. For graft-through copolymerizations, changes to Nsc and z are controlled by the macromonomer degree of polymerization (NMM) and initial fraction of the macromonomer in the feed (fMM0), respectively. We show that changes to these parameters can influence the copolymerization reactivity ratios and, in turn, impact the side-chain distribution along a graft polymer backbone. Poly((±)-lactide) macromonomers with NMM values as low as ca. 1 and as high as 72 were copolymerized with a small-molecule dimethyl ester norbornene comonomer over a range of fMM0 values (0.1 ≤ fMM0 ≤ 0.8) using ring opening metathesis polymerization (ROMP). Monomer conversion was determined using 1H nuclear magnetic resonance spectroscopy, and the data were fit using terminal and non-terminal copolymerization models. The results from this work provide essential information for manipulating Nsc and z, while maintaining synthetic control over the side-chain distribution for graft-through copolymerizations.
description: A full description can be found in the README.txt file. The files below include raw characterization data used in all analyses. Compiled monomer conversion data, which was interpreted from the attached raw data, is also included.  The data is organized into two primary folders: (1) “Copolymerization Kinetic Data…” and (2) “Monomer and Copolymer Characterization Data…”. The data contained in these folders was used to generate all figures in the manuscript. The corresponding figure numbers are included in the title of each primary data folder. Subfolders and files are organized using the nomenclature established in the manuscript, which is also described in the “README.txt” file. All raw nuclear magnetic resonance spectroscopy data files can be accessed using MNova or Bruker software. CDX files can be viewed with ChemDraw, which is a proprietary software distributed by CambridgeSoft. All other files can be opened using Microsoft Excel. The archival copy includes same data but in .csv format.
DOI: 10.13020/6vbg-6h30
title: Accessibility measures to population, employment and labor by auto and transit for the period of 1995, 2000, 2005, 2010 for the Twin Cities region

description: This data was created during the Access to Destinations research project. It includes the accessibility measures by auto and transit for the period of 1995, 2000, 2005, and 2010 for the Twin Cities region.
DOI: 10.13020/1s80-qg61
title: RV Atlantis 2017 Ship Data

description: Ocean waves cause oscillatory motion of ships. Oscillatory ship motion typically is greater in roll
(i.e., the ship rolling from side to side) than in pitch (i.e., tipping from front to back). Affordances
for walking on a ship at sea should be differentially influenced by ship motion in roll and pitch.
When roll exceeds pitch, the maximum walkable distance within a defined path should be greater
when walking along the ship’s short, or athwart axis than when walking along its long, or fore-aft
axis. When pitch exceeds roll, this relation should be reversed. We asked whether such changes
in ship motion would be reflected in judgments of direction-specific affordances for walking. Participants
(experienced maritime crewmembers) judged how far they could walk along a narrow
path on the ship deck. On different days, sailing conditions were such that the relative magnitude
of pitch and roll was reversed. Judgments of direction-specific affordances for walking mirrored
these changes in ship motion. The accuracy of judgments was consistent across directions, and
across changes in ship motion. We conclude that experienced maritime crewmembers were sensitive
to dynamic variations in affordances for walking that were, themselves, a function of dynamic
properties of the animal-environment system.
description: 1. File List
   A. Filename: RV Atlantis_APAL2017_DATA   
      Short description: Dataset of all collected data during the experiment. Includes calculations of performance, judgments, and accuracy.

   B. Filename:  June 16th Ship Motion Data
      Short description: Zipped folder of hourly data for the labeled date. Each file is raw data collected directly from the bridge of the R/V Atlantis.

   C. Filename:  June 25th Ship Motion Data
      Short description: Zipped folder of hourly data for the labeled date. Each file is raw data collected directly from the bridge of the R/V Atlantis.