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ENDGAME - Laboratory Experiment 2022-11-29 Exp. 004 - Part 2 - High Speed Camera data

Preliminary test with high speed camera and Schlieren shadow photography. Images of the injection of air in a 2D setup obtained using 2 parallel glass sheets (3 mm thickness) separated by rubber seals and filled with a viscous fluid. The viscous fluid is obtained mixing distilled water with a hair gel (2/3 distilled water, 1/3 hair gel). The gap between the two parallel sheets is 3 mm. Air was injected into the 2D setup through a capillary tube (~2 mm diam) with constant flow rate (~13x10-3 l/s). Frame rate of the high speed camera is 250 fps. The spherical mirror used for the Schlieren setup was 75 mm wide with a 750 mm focal length.

ENDGAME - Laboratory Experiment 2022-12-01 Exp. 001 - Part 4 - High Speed Camera data

Preliminary test with high speed camera and Schlieren shadow photography. Images of the injection of air bubbles in a 2D setup obtained using 2 parallel Plexiglas sheets (10 mm thickness) separated by rubber seals and filled with a distilled water. The gap between the two parallel sheets is 3 mm. Air was injected manually into the 2D setup through a capillary tube (~2 mm diam). Frame rate of the high speed camera is 250 fps. The spherical mirror used for the Schlieren setup was 75 mm wide with a 750 mm focal length.

ENDGAME - Laboratory Experiment 2022-12-01 Exp. 001 - Part 2 - High Speed Camera data

ENDGAME - Laboratory Experiment 2022-12-01 Exp. 001 - Part 1 - High Speed Camera data

ENDGAME - Laboratory Experiment 2022-11-30 Exp. 002 - High Speed Camera data

Preliminary test with high speed camera and Schlieren shadow photography. Images of the injection of air in a 2D setup obtained using 2 parallel glass sheets (3 mm thickness) separated by rubber seals and filled with a viscous fluid. The viscous fluid is obtained mixing distilled water with a hair gel (4/5 distilled water, 1/5 hair gel). The gap between the two parallel sheets is 3 mm. Air was injected into the 2D setup through a capillary tube (~2 mm diam) with constant flow rate (~10-2 l/s). Frame rate of the high speed camera is 250 fps. The spherical mirror used for the Schlieren setup was 75 mm wide with a 750 mm focal length.

ENDGAME - Laboratory Experiment 2022-11-30 Exp. 001 - High Speed Camera data

Preliminary test with high speed camera and Schlieren shadow photography. Images of the injection of air in a 2D setup obtained using 2 parallel glass sheets (3 mm thickness) separated by rubber seals and filled with a viscous fluid. The viscous fluid is obtained mixing distilled water with a hair gel (4/5 distilled water, 1/5 hair gel). The gap between the two parallel sheets is 3 mm. Air was injected manually into the 2D setup through a capillary tube (~2 mm diam). Frame rate of the high speed camera is 250 fps. The spherical mirror used for the Schlieren setup was 75 mm wide with a 750 mm focal length.

ENDGAME - Laboratory Experiment 2022-11-29 Exp. 005 - Part 3 - High Speed Camera data

Preliminary test with high speed camera and Schlieren shadow photography. Images of the injection of air in a 2D setup obtained using 2 parallel glass sheets (3 mm thickness) separated by rubber seals and filled with a viscous fluid. The viscous fluid is obtained mixing distilled water with a hair gel (2/3 distilled water, 1/3 hair gel). The gap between the two parallel sheets is 3 mm. Air was injected into the 2D setup through a capillary tube (~2 mm diam) with constant flow rate (~13x10-3 l/s). Frame rate of the high speed camera is 250 fps. The spherical mirror has been covered in order to acquire only optical images and compare them with the corresponding Schlieren shadow photography images (ENDGAME_LabExp_HighSpeedCamera_20221129_003_XXX and ENDGAME_LabExp_HighSpeedCamera_20221129_004_XXX).

Data from: Inter-laboratory comparison of plant volatile analyses in the light of intra-specific chemodiversity

Data for: Inter-laboratory comparison of plant volatile analyses in the light of intra-specific chemodiversity

opencc-by-4.0Apr 2022View details →

Carbonate spectra and Melilite overtone spectra from "Sakurai's Object revisited: new laboratory data for carbonates and melilites suggest the carrier of 6.9- μm excess absorption is a carbonate"

Carbonate and Melilite OVERTONE SPECTRA from  Bowey, J. E., Hofmeister, A. 2022 MNRAS, 513, 1774.  https://doi.org/10.1093/mnras/stac993"Sakurai's Object revisited: new laboratory data for carbonates and melilites suggest the carrier of 6.9- μ m excess absorption is a carbonate"Carbonate spectra in Fig 1 (carbonates.pdf) are in 2 column ascii files:  calcite_verythin.tau, calcite.tau, dolomite.tau, magnesite.tauTrue Meliliate overtone spectra in Fig 3 (goodmeliliteovertones.pdf are in 2 column ascii files:  Ak70_135micron_chip.tau,  Ak70_120micron_chip.tau, Ak70.tau, Ak13.tauThe column 1 increment varies between files.column 1 (x) is in increasing wavenumber (cm^-1)column 2 (tau) is absorbance in optical depth units per micron thickness of sample.Please see README.txt for more details.

opencc-by-4.0Oct 2023View details →

HPD experiments -- DryDemag cryostat, Low-temperature laboratory, Aalto University, Finland, 2018

Data related to NMR experients in superfluid 3He-B in DryDemag cryostat in 2018.The main part is oscilloscope signals and spectrograms of HPD (homogeneously precessing domain) where we have found spatially-localised oscillation modes. We attribute some of these modes to oscillations of theta-solitons in HPD.Files:data2018_dd_hpd_1.tgz -- All data except oscilloscope signals (2.0Gb).data2018_dd_hpd_2.tgz  -- Oscilloscope signals (5.9Gb), archive is splitted into three parts with split(1) program.

openCC (other)Apr 2022View details →

Soil microbial community composition (16S) data from a laboratory redox fluctuation experiment conducted with an Oxisol and Mollisol

To test the response of microbial communities to periodic oxygen limitation, we conducted a laboratory experiment where two contrasting soils (a rainforest Oxisol from Puerto Rico, and an Iowa cropland Mollisol) were incubated under headspace treatments where oxygen availability varied cyclically over time. Treatments consisted of 0, 2, 4, 8, or 12 d of anoxic conditions (dinitrogen headspace) followed by 4 d of oxic conditions (i.e., ambient oxygen concentrations), and these treatments were repeated for a total of 384 d. At 0, 48, and 384 days, DNA was extracted from replicates from each treatment for sequencing of 16S rRNA amplicons. Companion biogeochemical measurements from this experiment were published previously by Huang et al. (2021a,b). These data support the Hall et al. (2022) manuscript published in Frontiers in Microbiology.

openCC (other)Nov 2022View details →

Data for “Herbivory damage but not plant disease under experimental warming is dependent on weather for three subalpine grass species”, Rocky Mountain Biological Laboratory, Gothic, Colorado, 2015-2017.

Both theory and prior studies predict that climate warming should increase attack rates by herbivores and pathogens on plants. However, past work has often assumed that variation in abiotic conditions other than temperature (e.g., precipitation) do not alter warming responses of plant damage by natural enemies. Studies over short time periods span low variation in weather, and studies over long-time scales often neglect to account for fine-scale weather conditions. Here, we used a 20+ year field warming experiment to investigate if warming affects herbivory and disease are dependent on variation in ambient weather observed over three years. We studied three common grass species in a subalpine meadow in the Colorado Rocky Mountains, USA. We visually estimated herbivory and disease every two-weeks during the growing season and evaluated weather conditions during the previous two- or four-week time interval (two-week average air temperature, two- and four-week cumulative precipitation) as predictors of the probability and amount of damage. Herbivore attack was 13% more likely and amount of damage was 29% greater in warmed plots than controls across the focal species, but warming treatment had little affect on plant disease. Herbivory presence and damage increased the most with experimental warming when preceded by wetter, rather than drier, fine-scale weather, but preceding ambient temperature did not strongly interact with elevated warming to influence herbivory. Disease presence and damage increased, on average, with warmer weather and more precipitation regardless of warming. The effect of warming over reference climate on herbivore damage is dependent on and amplified by fine-scale weather variation, suggesting more boom-and-bust damage dynamics with increasing climate variability. However, the mean effect of regional climate change is likely reduced monsoon rainfall, for which we predict a reduction in insect herbivore damage. Plant disease was generally unrelated

openCC (other)Aug 2024View details →

Percent plant cover, Warming and Removal in Mountains (WaRM) experiment, Rocky Mountain Biological Laboratory, 2013-2022

These data were collected from 2013 to 2022 near the Rocky Mountain Biological Laboratory in Colorado. They are from a climate change experiment that manipulated temperature using open-top chambers to passively warm the air and plant community composition by removing the dominant species in a factorial design at two elevations. We measured the total percent cover of all the plots during the peak season each year, and in 2022, we also measured the total percent cover and species diversity every week. From 2022, air temperature, soil temperature, and soil moisture are also included.

openCC (other)May 2019View details →

Stable isotope and conservative tracer data used to estimate uptake of stream water dissolved organic carbon (DOC) through a whole-stream addition of a ¹³C-DOC tracer coupled with laboratory measurements of bioavailability of the tracer and stream water DOC using lability profiling with bioreactors

We performed a whole-stream addition of a ¹³C-DOC tracer and made laboratory measurements of the biological availability of the tracer as well as stream water DOC. The study was performed in October 2002 in a 1.27 km stretch of the third-order White Clay Creek in southeastern Pennsylvania. The tracer was prepared as a cold-water leachate of ¹³C-labeled tulip poplar saplings and it was added to the stream along with sodium bromide, a conservative tracer, over a 2-h period. Stream water samples were collected at 8 downstream stations over an 8-h period, filtered, and analyzed for concentrations of bromide and DOC. DOC was measured by Pt-catalyzed, persulfate oxidation, Br- was analyzed by ion chromatography, and C isotope samples were rotary evaporated, acidified, lyophilized, combusted, and the CO₂ analyzed with an elemental analyzer interfaced with an isotope ratio mass spectrometer. Lability profiling of the ¹³C-DOC tracer and stream water DOC were performed with a series of plug-flow bioreactors of increasing empty-bed contact times with the concentration of biodegradable DOC operationally defined as the difference between the DOC concentrations in the influent and effluent waters of the bioreactors. The bioreactor measurements were performed 2 days after the whole-stream release. Data were analyzed to estimate the uptake of stream water DOC associated with labile and semi-labile fraction of biodegradable DOC. These data have been previously used in a 2008 publication in Freshwater Biology, doi:10.1111/j.1365-2427.2007.01941.x.

openOpenDec 1999View details →

GIS point locations for Forest Soils Laboratory, SALRM research sites: 1967 - 2000

This is a collection of study site GIS locations for the Forest Soils Lab research locations. There are sites from within BCEF and CPCRW.

openOpenMar 2009View details →

Nitrogen cycling at treeline VII. Laboratory Decomposition

To assess spatial and seasonal patterns of pools and fluxes of dissolved inorganic- N (DIN), amino acid- N (AAN) and microbial biomass N (MBN), we conducted in situ soil incubations at four time periods during May 2001 - May 2002: spring thaw, peak growing season, fall senescence and over-winter. The goal was to be consistent in sampling each of these time periods within each mountain range, which was possible due to the 3-4 week lag in phenology (e.g. budbreak or initiation of senescence) between the southernmost and northernmost sites. Sites were sampled in order from south to north. During the spring 2002 sampling period, soils in the Brooks Range thawed prior to those in the White Mts. and the sampling sequence was adjusted to accommodate this. Within each treeline or forested sub-site, a 50 m transect was established parallel with the slope contour of the mountain. Six points were randomly selected along each transect, and soils were sampled near these points for the entire year. Rates of net DIN mineralization and net AAN production were measured using an in situ buried bag technique (Robertson et al., 1999). We used a 6.7 cm diameter steel corer fitted with a perforated, plastic sleeve to collect paired adjacent soil cores, and sampled below the live moss and detritus layers to a depth of 20 cm. The function of the perforated sleeve was to maintain structural integrity of the soil core during sampling. The perforated sleeve containing the intact core was then placed in a 1 mil breathable polyethylene bag followed by a fine mesh bag, gently returned to the original location, covered with litter and left to incubate. Incubation length was 4 weeks for the spring, growing season, and senescence sampling periods, and from September 2001 to early June 2002 for the over-winter sampling period. The second core in each pair was stored on ice and transported to the laboratory in Fairbanks. Soils were rocky at some sites and sampling to 20 cm was not possible; for these

Litterfall on the elevational gradient (Group 1) at Coweeta Hydrologic Laboratory from 1992 to 1993

Null Hypothesis: Litterfall weights not statistically different between plots on the altitudinal gradient.

Litterfall on the elevational gradient (Group 2) focusing on Rhododendrum leaf litter from the Coweeta Hydrologic Laboratory from 1994 to 1995

Null Hypothesis: Litterfall weights not statistically different between plots on the altitudinal gradient.

Litterfall on the elevational gradient (Group 3) from the Coweeta Hydrologic Laboratory in 1995

Null Hypothesis: Litterfall weights not statistically different between plots on the altitudinal gradient.

Litterfall on the elevational gradient (Group 4) with a focus on greenfall from the Coweeta Hydrologic Laboratory in 1995

Null Hypothesis: Litterfall weights not statistically different between plots on the altitudinal gradient.