65 Works

Increases in vein length compensate for leaf area lost to lobing in grapevine

Zoë Migicovsky, Joel F. Swift, Zachary Helget, Laura L. Klein, Anh Ly, Matthew Maimaitiyiming, Karoline Woodhouse, Anne Fennell, Misha Kwasniewski, Allison J. Miller, Peter Cousins & Daniel H. Chitwood
There is considerable variation in leaf lobing and leaf size, including among grapevines, some of the most well-studied leaves. We examined the relationship between leaf lobing and leaf size across grapevine populations which varied in extent of leaf lobing. We used homologous landmarking techniques to measure 2,632 leaves across two years in 476 unique, genetically distinct grapevines from 5 biparental crosses which vary primarily in the extent of lobing. We determined to what extent leaf...

PEMA Statewide Imagery Report

Maurie Kelly
Penn State’s Institutes of Energy and the Environment (IEE) began discussions with the Pennsylvania Emergency Management Agency (PEMA) in 2018 to plan to manage, host, and distribute the statewide imagery generated by PEMA’s initiative with Quantum Spatial. This imagery is vital to PEMA’s NG911 efforts and in supporting emergency response across the Commonwealth. In addition, the imagery is an important part of economic development and environmental planning for counties, non profit organizations, state agencies, as...

A simple theory for interfacial properties of dilute solutions

V. Mandalaparthy & W.G. Noid
Recent studies suggest that cosolute mixtures may exert significant non-additive effects upon protein stability. The corresponding liquid–vapor interfaces may provide useful insight into these non-additive effects. Accordingly, in this work, we relate the interfacial properties of dilute multicomponent solutions to the interactions between solutes. We first derive a simple model for the surface excess of solutes in terms of thermodynamic observables. We then develop a lattice-based statistical mechanical perturbation theory to derive these observables from...

Strategies to Mitigate Enteric Methane Emissions by Ruminants

C. Arndt, A.N. Hristov, W.J. Price, S.C. McClelland, A.M. Pelaez, A.R. Bayat, L.A. Crompton, J. Dijkstra, M.A. Eugène, D. Enahoro, E. Kebreab, M. Kreuzer, M. McGee, C. Martin, C.J. Newbold, C.K. Reynolds, A. Schwarm, K.J. Shingfield, J.B. Veneman, D.R. Yáñez-Ruiz & Z. Yu
To meet the 1.5°C target, methane (CH4) from ruminants must be reduced by 11 to 30% of the 2010 level by 2030 and by 24 to 47% by 2050. A meta-analysis identified strategies to decrease product-based [PB; CH4 per unit meat or milk (CH4I)] and absolute (ABS) enteric CH4 emissions while maintaining or increasing animal productivity (AP; weight gain and milk yield). Next the potential of different adoption rates of one PB and/or ABS strategies...

Data for \"Breaking down barriers to consistent, climate-smart regulation of invasive plants - a case study of northeast states\"

Bethany Bradley, Evelyn M. Beaury, Emily J. Fusco, Lara Munro, Carrie Brown-Lima, Benjamin Kesler, Nancy Olmstead & Jocelyn Parker

scCO2-Brine-Glass Dataset for Comparing Image Denoising Algorithms

Miral Tawfik, Zuleima Karpyn & Sharon Xiaolei Huang

Representations of the Working Class in Trump-Era Advertising

Matthew P. McAllister
This essay argues that in the early- to mid-Trump era – starting with his active campaign for the US Presidency in 2015 and through his subsequent administration pre-Covid through February 2020 – working-class bodies were used in advertising to both contest and enact prominent values and ideological tensions that became prominent during Trump’s reign. Advertising used class-based representations in several ways: to critique Trump and his policies; to depict working-class hardships under Trump; and, conversely,...

Extreme hydroxyl amounts generated by thunderstorm-induced corona on grounded metal objects

W.H. Brune, J.M. Jenkins, G.A. Olson, P.J. McFarland, D.O. Miller, J. Mao & X. Ren
It has now been established that atmospheric electrical discharges generate unexpectedly large amounts of the atmosphere’s primary oxidant, hydroxyl (OH) in thunderstorm anvils, where lightning and weak electrical discharges are caused by atmospheric charge separation. The question is “Do other atmospheric electrical discharges also generate large amounts of oxidants?’ In this paper, we demonstrate that coronas formed on grounded metal objects produce extreme amounts of hydroxyl (OH), hydroperoxyl (HO2), and ozone (O3) when thunderstorms are...

Abundance predominates over niche factors as determinant of the frequency of interactions between frugivorous birds and plants

Marco Aurelio Pizo, Tomas Carlo, Aarón González-Castro & Antonio Fontanella
Neutral and niche factors influence the structure of frugivory and seed dispersal networks. While the former refers to the abundance of interacting species, niche factors refer to traits that mediate interactions between species (e.g., morphology). The challenge is to unravel in which circumstances one kind of factor predominates over the other, or how much variation is explained by each factor. We investigated the relative contributions of abundance and trait-matching (considering fruit’s size, pulp mass to...

Data from: An integrative skeletal and paleogenomic analysis of stature variation suggests relatively reduced health for early European farmers

Stephanie Marciniak, Christina Bergey, Ana Maria Silva, Agata Hałuszko, Mirosław Furmanek, Barbara Veselka, Petr Velemínský, Giuseppe Vercellotti, Joachim Wahl, Gunita Zarina, Cristina Longhi, Jan Kolář, Rafael Garrido-Pena, Raúl Flores-Fernández, Ana M. Herrero-Corral, Angela Simalcsik, Werner Müller, Alison Sheridan, Žydrūnė Miliauskienė, Rimantas Jankauskas, Vyacheslav Moiseyev, Kitti Köhler, Ágnes Király, Beatriz Gamarra, Olivia Cheronet … & George H. Perry
Human culture, biology, and health were shaped dramatically by the onset of agriculture ~12,000 years before present (BP). This shift is hypothesized to have resulted in increased individual fitness and population growth as evidenced by archaeological and population genomic data alongside a decline in physiological health as inferred from skeletal remains. Here, we consider osteological and ancient DNA data from the same prehistoric individuals to study human stature variation as a proxy for health across...

Evidence from automixis with inverted meiosis for the maintenance of sex by loss of complementation

Marco Archetti
The adaptive value of sexual reproduction is still debated. A short-term disadvantage of asexual reproduction is loss of heterozygosity, which leads to the unmasking of recessive deleterious mutations. The cost of this loss of complementation is predicted to be higher than the twofold cost of meiosis for most types of asexual reproduction. Automixis with terminal fusion of sister nuclei is especially vulnerable to the effect of loss of complementation. It is found, however, in some...

Stranger danger: A meta-analysis of the dear enemy hypothesis

Jo Werba, Adam Stuckert, Matthew Edwards & Michael McCoy
The dear enemy hypothesis predicts that territorial individuals will be less aggressive toward known neighbors than to strangers. This hypothesis has been well studied and there is a wealth of data demonstrating its prevelance among some taxa. However, a quantitative synthesis is needed to test the generality of the phenomenon, identify key mechanisms driving the behavior, and guide future research. Here we made a comprehensive collection of Dear Enemy data from 138 studies representing 105...

Data and Rscripts from: An integrated experimental and mathematical approach to inferring the role of food exploitation and interference interactions in shaping life history

Barbara Joncour, William Nelson, Damie Pak & Ottar Bjornstad
Intraspecific interactions can occur through many ways but the mechanisms can be broadly categorized as food exploitation and interference interactions. Identifying how intraspecific interactions impact life history is crucial to accurately predict how population density and structure influence dynamics. However, disentangling the effects of interference interactions from exploitation using experiments, is challenging for most biological systems. Here we propose an approach that combines experiments with modeling to infer the pathways of intraspecific interactions in a...

Complex floral traits shape pollinator attraction to ornamental plants

Emily Erickson, Robert Junker, Jared Ali, Nathaniel McCartney, Harland Patch & Christina Grozinger
Background and Aims Ornamental flowering plant species are often used in managed greenspaces to attract and support pollinator populations. In natural systems, selection by pollinators is hypothesized to result in convergent multimodal floral phenotypes that are more attractive to specific pollinator taxa. In contrast, ornamental cultivars are bred via artificial selection by humans, and exhibit diverse and distinct phenotypes. Despite their prevalence in managed habitats, the influence of cultivar phenotypic variation on plant attractiveness to...

Ecologies of Transdisciplinary Research

Paul Shrivastava, Laszlo Zsolnai, David Wasieleski & Philippe Mairesse
We are scholars of economics, business , and sustainability. For the past two decades we have been doing transdisciplinary work individually and jointly. In this essay we share some key lessons that we have learned about the ecologies of transdisciplinary work. We consider transdisciplinarity to be qualitatively different from interdisciplinarity or multidisciplinarity in several crucial ways. Transdisciplinary work takes its problems from the real world and not disciplinary gaps in knowledge or combining disciplines for...

Supplementary data, code, and information for ‘False Hope: The rate of global temperature rise may have hit a plateau, but a climate crisis still looms in the near future’ (Scientific American, Mann 2014)

M. Mann
“Temperatures have been flat for 15 years—nobody can properly explain it,” the Wall Street Journal says. “Global warming ‘pause’ may last for 20 more years, and Arctic sea ice has already started to recover,” the Daily Mail says. Such reassuring claims about climate abound in the popular media, but they are misleading at best. Global warming continues unabated, and it remains an urgent problem. The misunderstanding stems from data showing that during the past decade...

Six years of wild bee monitoring collections data using Blue Vane traps in Southern Pennsylvania, USA

Nash Turley, David Biddinger, Neelendra Joshi & Margarita López-Uribe
Turley NE, Biddinger DJ, Joshi NK, López-Uribe MM. 2022. Six years of wild bee monitoring shows changes in biodiversity within and across years and declines in abundance. Ecology and Evolution. Wild bees form diverse communities that pollinate plants in both native and agricultural ecosystems making them both ecologically and economically important. The growing evidence of bee declines has sparked increased interest in monitoring bee community and population dynamics using standardized methods. Here, we studied the...

Electrodynamic Levitation Diffusion Chamber Measurements of the Mass Growth of Ice Crystals Grown from the Vapor at -65 to -40C

G. Pokrifka, A. Myle & J.Y. Harrington
This data set comprises individual time-series for ice crystals grown in an electrodynamic levitation diffusion chamber at temperatures between -65 and -40C. Descriptions of the chamber and experimental proceedure can be found in Harrison et al. (2016), Pokrifka et al. (2020), and Pokrifka et al. (submitted to J. Atmos. Sci. 2022). Experiments were conducted by freezing small (approximately 10 micrometer radius) droplets either homogeneously or heterogeneously with a 0.2 g/L Snomax mixture. Frozen droplets were...

Supplementary data, code, and information for ‘Interhemispheric antiphasing of neotropical precipitation during the past millennium’ (PNAS, Steinman et al. 2022)

B.A. Steinman, N. Stansall, M.E. Mann, C.A. Cooke, M.B. Abbott, M. Vuille, B.W. Bird, M.S. Lachniet & A. Fernandez
Uncertainty about the influence of anthropogenic radiative forcing on the position and strength of convective rainfall in the Intertropical Convergence Zone (ITCZ) inhibits our ability to project future tropical hydroclimate change in a warmer world. Paleoclimatic and modeling data inform on the timescales and mechanisms of ITCZ variability; yet a comprehensive, long-term perspective remains elusive. Here, we quantify the evolution of neotropical hydroclimate over the pre-industrial past millennium (850 to 1850 CE) using a synthesis...

Dataset: Canonical approach to cation flux calibration in oxide molecular-beam epitaxy

Jiaxin Sun, Christopher Parzyck, June Lee, Charles Brooks, Lena Kourkoutis, Xianglin Ke, Rajiv Misra, Jürgen Schubert, Felix Hensling, Zhe Wang, Zhe Wang , Megan Holtz, Nathaniel Schreiber, Qi Song, Hanjong Paik, Tassilo Heeg, David Muller, Kyle Shen & Darrell Schlom

Coarse-Grained Models for Local Density Gradients

M.R. DeLyser & W.G. Noid
Coarse-grained (CG) models provide superior computational efficiency for simulating soft materials. Unfortunately, CG models with conventional pair-additive potentials demonstrate limited transferability between bulk and interfacial environments. Recently, a growing number of CG models have supplemented these pair potentials with one-body potentials of the local density (LD) around each site. These LD potentials can significantly improve the accuracy and transferability of CG models. Nevertheless, it remains challenging to accurately describe interfaces where the LD varies rapidly....

Geographic and temporal morphological stasis in the latest Cretaceous ammonoid Discoscaphites iris from the U.S. Gulf and Atlantic Coastal Plains

James Witts, Corinne Myers, Matthew Garb, Kayla Irizarry, Ekaterina Larina, Anastasia Rashkova & Neil Landman
We examine temporal and spatial variation in morphology of the ammonoid cephalopod Discoscaphites iris using a large dataset from multiple localities in the Late Cretaceous (Maastrichtian) of the United States Gulf and Atlantic Coastal Plains, spanning a distance of 2000 km along the paleoshoreline. Our results suggest that the fossil record of D. iris is consistent with no within species net accumulation of phyletic evolutionary change across morphological traits or the lifetime of this species....

Population genetic and geographic data of six Neotropical plant species

Diana Gamba & Nathan Muchhala
We examined population genetic structure and fine-scale spatial genetic structure (FSGS) in six perennial understory angiosperms in Andean cloud forests of northwestern Ecuador. Species belong to three families (Gesneriaceae, Melastomataceae, and Rubiaceae), and within each family we paired one insect-pollinated with one hummingbird-pollinated species, predicting that insect-pollinated species have greater population differentiation (as quantified with the FST statistic) and stronger FSGS (as quantified with the SP statistic) than hummingbird-pollinated species.

Caution is warranted when using animal space-use and movement to infer behavioral states

Frances E. Buderman, Tess M. Gingery, Duane R. Diefenbach, Laura C. Gigliotti, Danielle Begley-Miller, Marc M. McDill, Bret D. Wallingford, Christopher S. Rosenberry & Patrick J. Drohan
Background: Identifying the behavioral state for wild animals that can’t be directly observed is of growing interest to the ecological community. Advances in telemetry technology and statistical methodologies allow researchers to use space-use and movement metrics to infer the underlying, latent, behavioral state of an animal without direct observations. For example, researchers studying ungulate ecology have started using these methods to quantify behaviors related to mating strategies. However, little work has been done to determine...

Shale Network – Groundwater Analyses from Beaver, Washington, and Greene Counties (Pennsylvania) as of 6/2022

S.W. Shaheen, T. Wen, A. Herman & S. Brantley
Abstract This data set is a subset of the Shale Network database (https://doi.org/10.4211/his-data-shalenetwork) and has been discussed in the following publication “Shaheen, S., Wen, T., Herman, A., Brantley, S., 2022. Geochemical evidence of groundwater contamination and potential human health risks where hydraulic fracturing overlaps with extensive legacy hydrocarbon extraction. Environmental Science & Technology”. The Shale Network (http://www.shalenetwork.org/) is a project funded by the National Science Foundation to help scientists and citizens store data for water...

Registration Year

  • 2022

Resource Types

  • Dataset
  • Journal Article
  • Report
  • Text


  • Pennsylvania State University
  • National Center for Atmospheric Research
  • University of Massachusetts Amherst
  • The Ohio State University
  • University of Georgia
  • University of Pittsburgh
  • University at Buffalo, State University of New York
  • University of East Anglia
  • University of Southern California
  • North Carolina State University