63 Works

TSIS-1 SIM Recalibration of the SORCE-SIM Absolute Irradiance Scale

James Mothersbaugh, Jerald Harder, Steven Penton & Stèphane Bèland
This TSIS-Adjusted Value (TAV) SORCE-SIM irradiance calibration provides a TSIS1-SIM/SORCE-SIM ratio on the SORCE-SIM wavelength scale. This scale varies in spectral resolution from 1-34 nm over the spectral range. Irradiances are reported at a mean solar distance of 1 AU and zero relative line-of-sight velocity with respect to the Sun. The SORCE TSIS-1 Irradiance Calibration Ratio (STICR) is tabulated is the attached datasets, containingn the wavelength, number of spectra combined at this wavelength, SORCE mean...

PSP FIELDS Digital Fields Board (DFB) AC-coupled Differential Voltage, V1-V2 Antennae, Dipole Mode, Bandpass filtered, High Gain, Sensor coordinates, Level 2 (L2), 0.873813 s Data

Stuart D. Bale, David M. Malaspina, Alexandros Chasapis, Marc Pulupa, Timothy Quinn & Peter Schroeder
PSP FIELDS Digital Fields Board, DFB, dV12 data: The DFB is the low frequency, less than 75 kHz, component of the FIELDS experiment on the Parker Solar Probe spacecraft. DFB AC bandpass data consist of peak and average values of the absolute value of bandpassed time series waveform data over a time interval equal to the reporting cadence. The AC bandpass data have the peak response frequency of each bin reported in the metadata. The...

PSP FIELDS Digital Fields Board (DFB) AC-coupled Searchcoil Magnetometer, SCM, Bandpass filtered, Medium Frequency, High Gain, u-component, Sensor coordinates, Level 2 (L2), 0.873813 s Data

Stuart D. Bale, Thierry Dudok de Wit, David M. Malaspina, Alexandros Chasapis, Marc Pulupa, Timothy Quinn & Peter Schroeder
PSP FIELDS Digital Fields Board, DFB, SCMumfhg data. The DFB is the low frequency, less than 75 kHz, component of the FIELDS experiment on the Parker Solar Probe spacecraft. DFB AC bandpass data consist of peak and average values of the absolute value of bandpassed time series waveform data over a time interval equal to the reporting cadence. The AC bandpass data have the peak response frequency of each bin reported in the metadata. The...

Data from: Effectiveness of antifungal treatments during chytridiomycosis epizootics in populations of an endangered frog

Roland Knapp, Maxwell Joseph, Thomas Smith, Ericka Hegeman, Vance Vredenburg, James Erdman, Daniel Boiano, Andrea Jani & Cheryl Briggs
The recently-emerged amphibian chytrid fungus Batrachochytrium dendrobatidis (Bd) has had an unprecedented impact on global amphibian populations, and highlights the urgent need to develop effective mitigation strategies. We conducted in-situ antifungal treatment experiments in wild populations of the endangered mountain yellow-legged frog during or immediately after Bd-caused mass die-off events. The objective of treatments was to reduce Bd infection intensity ("load") and in doing so alter frog-Bd dynamics and increase the probability of frog population...

Taylor Valley Stream Hydrology TLS B-421 PS23 SV01

Dianne McKnight, Michael Gooseff, Keith Williams & Marianne Okal

Passive and Active Spectrum Sharing (PASS)

Kevin K. Gifford
PASS is an NSF-funded project (ECCS-2030233)[1]. This page provides access to the noise-floor survey SigMF[2][3] data sets generated as part of the project. The University of Colorado Boulder (CU) Passive and Active Spectrum Sharing (PASS) project directly addresses the related problems of protecting passive users while enabling secure, dynamic spectrum sharing between passive and active systems. The PASS project is an interdisciplinary collaboration with deep expertise in spectrum science, spectrum sharing, wireless systems, and system...

Taylor Valley Stream Hydrology TLS B-421 PS24 SV01

DIANE MCKNIGHT, Michael Gooseff, Marianne Okal & Keith Williams

Divergent sexual signals reflect costs of local parasites

Amanda Hund, Joanna K. Hubbard, Tomáš Albrecht, Yoni Vortman, Pavel Munclinger, Simona Krausová, Oldřich Tomášek & Rebecca J. Safran
Many closely related populations are distinguished by variation in sexual signals and this variation is hypothesized to play an important role in reproductive isolation and speciation. Within populations, there is considerable evidence that sexual signals provide information about the incidence and severity of parasite infections, but it remains unclear if variation in parasite communities across space could play a role in initiating or maintaining sexual trait divergence. To test for variation in parasite-associated selection, we...

Imaging the breakdown of ohmic transport in graphene

Alec Jenkins, Susanne Baumann, Haoxin Zhou, Simon Meynell, Daipeng Yang, Kenji Watanabe, Takashi Taniguchi, Andrew Lucas, Andrea Young & Ania Bleszynski Jayich
Ohm's law describes the proportionality of current density and electric field. In solid-state conductors, Ohm's law emerges due to electron scattering processes that relax the electrical current. Here, we use nitrogen-vacancy center magnetometry to directly image the local breakdown of Ohm's law in a narrow constriction fabricated in a high mobility graphene monolayer. Ohmic flow is visible at room temperature as current concentration on the constriction edges, with flow profiles entirely determined by sample geometry....

Type III secretion system effector proteins are mechanically labile

Marc-Andre LeBlanc, Morgan Fink, Thomas Perkins & Marcelo Sousa
Multiple Gram-negative bacteria encode Type III secretion systems (T3SS) that allow them to inject effector proteins directly into host cells to facilitate colonization. To be secreted, effector proteins must be at least partially unfolded to pass through the narrow needle-like channel (diameter < 2 nm) of the T3SS. Fusion of effector proteins to tightly packed proteins—such as GFP, ubiquitin, or dihydrofolate reductase (DHFR)—impairs secretion and results in obstruction of the T3SS. Prior observation that unfolding...

Data from: Harnessing the NEON data revolution to advance open environmental science with a diverse and data-capable community

R Chelsea Nagy & Jennifer Balch
It is a critical time to reflect on the National Ecological Observatory Network (NEON) science to date as well as envision what research can be done right now with NEON (and other) data and what training is needed to enable a diverse user community. NEON became fully operational in May 2019 and has pivoted from planning and construction to operation and maintenance. In this overview, the history of and foundational thinking around NEON are discussed....

Discrete Aurora on Mars: Insights into their distribution and activity from MAVEN/IUVS observations

Sonal Jain & Nicholas Schneider
The IUVS aurora data is the set of Level1C files that has a format similar to that the IUVS team has been publishing to the public using the NASA planetary data system's atmosphere node. The PDS website doesn't contain data for nightside observations whereas this data set is explicitly from nightside observation used in the aurora study that has been submitted (soon to be published) to ascientific journal. Detail of the data structure can be...

Ultra-sensitive multi-species spectroscopic breath analysis for real-time health monitoring and diagnostics

Ya-Chu Chan, Jun Ye, Qizhong Liang, Jutta Toscano, P. Bryan Changala & David J. Nesbitt
Abstract from associated manuscript: Abstract from the manuscript: Breath analysis enables rapid, non-invasive diagnostics, as well as long-term monitoring, of human health through the identification and quantification of exhaled biomarkers. Here, for the first time, we demonstrate the remarkable capabilities of mid-infrared (mid-IR) cavity-enhanced direct frequency comb spectroscopy (CE-DFCS) applied to breath analysis. We simultaneously detect and monitor as a function of time four breath biomarkers - CH3OH, CH4, H2O and HDO - as well...

Resource availability and heterogeneity shape the self‐organisation of regular spatial patterning

Jessica Castillo Vardaro, Juan A. Bonachela, Christopher C. M. Baker, Malin L. Pinsky, Daniel F. Doak, Robert M. Pringle & Corina E. Tarnita
Explaining large-scale ordered patterns and their effects on ecosystem functioning is a fundamental and controversial challenge in ecology. Here, we coupled empirical and theoretical approaches to explore how competition and spatial heterogeneity govern the regularity of colony dispersion in fungus-farming termites. Individuals from different colonies fought fiercely, and inter-nest distances were greater when nests were large and resources scarce—as expected if competition is strong, large colonies require more resources, and foraging area scales with resource...

Stand-level variation drives canopy water storage by non-vascular epiphytes across a temperate-boreal ecotone

Daniel Stanton, Tana Route, Abby Glauser, Kate Hembre & Abigail Meyer
Epiphytes, including bryophytes and lichens, can significantly change the water interception and storage capacities of forest canopies. However, despite some understanding of this role, empirical evaluations of canopy and bole community water storage capacity by epiphytes are still quite limited. Epiphyte communities are shaped by both microclimate and host plant identity, and so the canopy and bole community storage capacity might also be expected to vary across similar spatial scales. We estimated canopy and bole...

Elucidating gene expression adaptation of phylogenetically divergent coral holobionts under heat stress

Viridiana Avila-Magaña, Bishoy Kamel, Michael DeSalvo, Kelly Gómez-Campo, Susana Enríquez, Hiroaki Kitano, Rori Rohlfs, Roberto Iglesias-Prieto & Mónica Medina
As coral reefs struggle to survive under climate change, it is crucial to know whether they have the capacity to withstand changing conditions, particularly increasing seawater temperatures. Thermal tolerance requires the integrative response of the different components of the coral holobiont (coral host, algal photosymbiont, and associated microbiome). Here, using a controlled thermal stress experiment across three divergent Caribbean coral species, we attempt to dissect holobiont member metatranscriptome responses from coral taxa with different sensitivities...

Morphological data quantifying sexual dimorphism of Anolis carolinensis in presence and absence of congener

Thor Veen, Yoel Stuart, Ambika Kamath & William Sherwin
Natural selection favors sexual dimorphism that reduces resource competition between the sexes of the same species. However, niche partitioning among interspecific competitors should counter such divergence, as partitioning the niche results in smaller total niche widths for each individual species, leaving less room for the sexes to diverge. A straightforward (and long-standing) hypothesis emerges: species in competitor-rich ecological communities should show less sexual dimorphism than species in competitor-poor ecological communities. Here, we test this prediction...

Surgeonfish foraging data at Palmyra Atoll

Laura E. Dee, Jacob G. Eurich, Darcy Bradley, Peter M. Carlson, Kathryn Davis, Jessica Schem, April D. Ridlon & Jennifer E. Caselle
This dataset includes surgeonfish foraging metrics quantified during focal follow trials and includes: (a) bite composition, (b) bite rate, (c) foraging time, (d) foraging depth, and (e) forager size (cm). Data was collected at Palmyra Atoll on the back reef and fore reef habitats in 2013. Four common surgeonfishes (Acanthuridae) were selected as study species; Ctenochaetus striatus, Ctenochaetus marginatus, Acanthurus lineatus, and Acanthurus nigricans. The raw data is aggregated by a unique ID, which consists...

The effects of climate and demographic history in shaping genomic variation across populations of the Desert Horned Lizard (Phrynosoma platyrhinos)

Keaka Farleigh, Sarah A. Vladimirova, Christopher Blair, Jason T. Bracken, Nazila Koochekian, Drew R. Schield, Daren C. Card, Nicholas Finger, Jonathan Henault, Adam D. Leaché, Todd A. Castoe & Tereza Jezkova
Species often experience spatial environmental heterogeneity across their range, and populations may exhibit signatures of adaptation to local environmental characteristics. Other population genetic processes, such as migration and genetic drift, can impede the effects of local adaptation. Genetic drift in particular can have a pronounced effect on population genetic structure during large-scale geographic expansions, where a series of founder effects leads to decreases in genetic variation in the direction of the expansion. Here we explore...

Computational exploration of treadmilling and protrusion growth observed in fire ant rafts

Robert Wagner
Condensed active matter systems regularly achieve cooperative emergent functions that individual constituents could not accomplish alone. The rafts of fire ants (Solenopsis invicta) are often studied in this context for their ability to create structures comprised entirely of their own bodies, including tether-like protrusions that facilitate exploration of flooded environments. While similar protrusions are observed in cytoskeletons and cellular aggregates, they are generally dependent on morphogens or external gradients leaving the isolated role of local...

Climate warming threatens the persistence of a community of disturbance-adapted native annual plants

Paul Reed, Scott Bridgham, Laurel Pfeifer-Meister, Megan Peterson, Bart Johnson, Bitty Roy, Graham Bailes, Aaron Nelson, William Morris & Daniel Doak
With ongoing climate change, populations are expected to exhibit shifts in demographic performance that will alter where a species can persist. This presents unique challenges for managing plant populations and may require ongoing interventions, including in-situ management or introduction into new locations. However, few studies have examined how climate change may affect plant demographic performance for a suite of species, or how effective management actions could be in mitigating climate change effects. Over the course...

Data from: Leaf litter arthropod responses to tropical forest restoration

Rebecca J. Cole, Karen D. Holl, Rakan A. Zahawi, Philipp Wickey & Alan R. Townsend
Soil and litter arthropods represent a large proportion of tropical biodiversity and perform important ecosystem functions, but little is known about the efficacy of different tropical forest restoration strategies in facilitating their recovery in degraded habitats. We sampled arthropods in four 7‐ to 8‐year‐old restoration treatments and in nearby reference forests. Sampling was conducted during the wet and dry seasons using extractions from litter and pitfall samples. Restoration treatments were replicated in 50 × 50‐m...

A supergene underlies linked variation in color and morphology in a Holarctic songbird

Erik Funk, Nicholas Mason, Snæbjörn Pálsson, Tomáš Albrecht, Jeff Johnson & Scott Taylor
The genetic architecture of a phenotype can have considerable effects on the evolution of a trait or species. Characterizing genetic architecture provides insight into the complexity of a given phenotype and, potentially, the role of the phenotype in evolutionary processes like speciation. We use genome sequences to investigate the genetic basis of phenotypic variation in redpoll finches (Acanthis spp.). We demonstrate that variation in redpoll phenotype is broadly controlled by a ~55-Mb chromosomal inversion. Within...

Data from: Modeling GPS signal propagation through volcanic plumes

Nicholas Rainville, Scott Palo & Kristine Larson
Extinction of Global Positioning System (GPS) signals has been observed at GPS sites located near erupting volcanoes as a decrease in the Signal to Noise Ratio (SNR) of recieved signals. While this effect has been used to detect volcanic ash plumes, the physical processes causing the signal extinction were not well understood. A simulation was developed to model absorption and scattering from ash particles in a plume which included plume density, composition, and charging as...

Data for: Dorsal premammillary projection to periaqueductal gray controls escape vigor from innate and conditioned threats

Peter Schuette, Weisheng Wang, Mimi La-Vu, Brooke Tobias, Marta Ceko, Philip Kragel, Fernando Reis, Shiyu Ji, Megha Sehgal, Sandra Maesta-Pereira, Meghmik Chakerian, Alcino Silva, Newton Canteras, Tor Wager, Jonathan Kao & Avishek Adhikari
Escape from threats has paramount importance for survival. However, it is unknown if a single circuit controls escape from innate and conditioned threats. The hypothalamic dorsal premammillary nucleus (PMd) may control escape, as it is strongly activated by escape-inducing threats and projects to the region most implicated in escape, the dorsolateral periaqueductal gray (dlPAG). We show that in mice cholecystokinin (cck)-expressing PMd cells are activated during escape, but not other defensive behaviors. PMd-cck ensemble activity...

Registration Year

  • 2021

Resource Types

  • Dataset


  • University of Colorado Boulder
  • University of California, Berkeley
  • University of California, Santa Barbara
  • University of Washington
  • University of Orléans
  • University of Minnesota
  • Laboratory for Atmospheric and Space Physics
  • University of Wisconsin-Madison
  • Charles University