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11 results for “sand temperatures”
Soil moisture, temperature, and electrical conductivity data from the black sand extended growing season length experiment, 2018 - 2024, hourly.
As a result of climate change, the Rocky Mountain Front Range is experiencing warmer summers and earlier snowmelt. Due to the importance of snow for regulating soil temperature, growing season length, and available moisture in alpine ecosystems, even small shifts in the snow-free period could have large impacts. The focus of the Growing Season Length Experiment is to examine how terrain-related differences in climate exposure influence the way alpine habitats respond to climate change via earlier snowmelt. To simulate how changes in growing season length may affect biotic and abiotic components, NWT LTER researchers established 5 experimental sites each containing a pair 10 x 40m rectangular plots. These blocks include north and south facing aspects, subalpine and alpine tundra meadows in a range of hydrological conditions (e.g. dry meadows, moist meadows, wet meadows). We accelerated snowmelt in one plot of each block by adding chemically inert black sand, while keeping the second plot as an unmanipulated control (black sand was added to these plots after snow had naturally melted). This dataset includes measurements of soil temperature, moisture, and electrical conductivity.
Hobo temperature data from the black sand extended growing season length and ITEX chamber experiment, hourly, 2018 - 2020
Climate warming is accelerating spring snowmelt in Colorado, with pronounced effects in mountain ecosystems. Early snowmelt results in an extended summer that may increase stress for plants, such as water limitation and a higher frequency of frost events. Alternatively, plants that are limited by a short growing season may benefit from longer summers under climate change. To simulate how changes in growing season length and air temperature may affect biotic and abiotic components, we accelerated snowmelt in one plot of each 4 blocks by adding chemically inert black sand, while keeping the second plot as an unmanipulated control (black sand was added to these plots after snow had naturally melted). ITEX warming chambers were added to 3 subplots within each block. This dataset includes measurements of soil surface or subsurface temperature within subplots.
Con-mod soil temperature data in the Black Sand experiment control plots for East Knoll, Audubon, Lefty, Soddie and Trough, 2019 - ongoing.
In the alpine tundra, shrubs modify wind distribution of snow, increasing snowpack on the leeward side of shrubs, and they provide shading, which modifies temperatures. In order to mimic these abiotic effect of shrubs, structures called connectivity modifiers, hereafter referred to as con-mods, were deployed in Black Band experiment plots in September 2018. Briefly, the Black Sand experiment was initiated in May 2018 to measure the effects of an extended growing season, by initiating earlier snow melt through the application of black sand, on plants and biogeochemistry. Together, this experimental framework allows us to ask how biotic effects influence climate exposure and ecological responsiveness.
Ariano-Sánchez et al-Sand temperatures on sea turtle nesting beaches
<p>Dataset of sand temperatures on sea turtle nesting beaches recorded for 2018-2019 from two dark volcanic sand beaches in the Pacific coast of Guatemala, Central America.</p> <p>R Code for analysis of dataset.</p>
Data set for: Effects of microstructure evolution on compressive strength of silica sand-enhanced oil well cement at a wide temperature range
<p><span>The influence of microstructure of silica-enhanced cement on the mechanical performance of cement is difficult to be described. In this study, we used the scanning electron microscope and image processing method to investigate the relationship between the complicity of cement microstructure and compressive strength under various temperature and curing time conditions. Fractal dimension was applied to describe the complicity of cement. The relationships among compressive strength, fractal dimension, temperature, curing time and pore structure of cement were identified. The results show that curing time of cement directly control the complicity of cement microstructure and compressive strength by altering the pore orientation and macropore ratio in cement. The curing temperature affects the complicity of cement microstructure and compressive strength indirectly by changing the ratio of micropore and small pore. The fractal dimension of silica-enhanced cement shows good correlation with compressive strength. Pore size distribution is the most important factor that influence the complicity of cement matrix and compressive strength of silica-enhanced cement. When building up the macroscopic mechanical performance model of cement, we should consider the influence of pore size distribution in cement under different curing temperatures and times on the complicity of cement microstructure. </span></p>
Figure 4 in Microhabitat selection in the sand recluse spider (Sicarius thomisoides): the effect of rock size and temperature
Figure 4. Selectivity of Sicarius thomisoides to different rock sizes and rock temperatures. Values above 1 indicate a positive selection; values below 1 indicate rejection or avoidance (mean ± standard deviation).
Figure 3 in Microhabitat selection in the sand recluse spider (Sicarius thomisoides): the effect of rock size and temperature
Figure 3. (a) Proportion of individuals found under large and small rocks. Large rocks: larger than 40 cm; Small rocks: smaller than 40 cm. (b) Proportion of juveniles and adults using only large rocks in different locations.
Figure 2 in Microhabitat selection in the sand recluse spider (Sicarius thomisoides): the effect of rock size and temperature
Figure 2. (a) Adult female of Sicarius thomisoides in a typical hunting position under a rock in Punta de Choros. (b) Female eating a conspecific under the same rock in Maitencillo.
Data set for: Effects of microstructure evolution on compressive strength of silica sand-enhanced oil well cement at a wide temperature range
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Figure 1 in Microhabitat selection in the sand recluse spider (Sicarius thomisoides): the effect of rock size and temperature
Figure 1. Geographical distribution of S. thomisoides and sampling sites selected for the study.
FIGURE 5. Air temperature for observation periods 1–10 in An investigation of patch occupancy and dispersal by third to final instar nymphs of Brachytrupes megacephalus Lefèbvre, 1827 (Orthoptera: Gryllidae: Gryllinae) across the sand dune biotope at the Għadira Nature Reserve, Malta
FIGURE 5. Air temperature for observation periods 1–10; the highest nymph count was that of 77 individuals (OP5) and the lowest was that of 11 individuals (OP8).
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.