Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
239
datasets available to search
ShareScore release 0.7.1
Dataset results
239 results for “Sierra Nevada”
Random Forest fused MODIS and Landsat snow cover from spectral mixture analysis in the Sierra Nevada, USA
<p>This data is snow cover fraction from the Snow Covered Area and Grain Size (SCAG) model for Landsat OLI and Terra MODIS and well as a 2-stage random forest model to fuse the 2 datasets for improved temporal/spatial resolution. There are 170 scenes in 2001 to 2012. It was used in the a publication for Remote Sensing of the Environment titled: Multi-sensor fusion using random forests for daily fractional snow cover at 30 m, doi: to be assigned.</p> <p><strong>Inputs</strong>: [YYYYMMDD is year month day of month, $num is 5 or 7 for Landsat platform, $sens is sensor TM or ETM+]</p> <p>Landsat.zip:</p> <p>Snow cover from Landsat: SSN.p042r034_YYYYMMDD.Landsat$num-$sens.canopyadjusted_mask.v01.tif </p> <p> </p> <p>MODIS.zip:</p> <p>Snow cover from MODIS: SSN.SN_W$YYYYMMDD_$YYYYMMDD.Terra-MODIS.snow_cover_percent.v01.tif</p> <p> </p> <p>Predictors.zip<strong> </strong></p> <p>Static predictors (see RSE publication Table 2): SouthernSierraNevada*.tif [* here is the variable name]</p> <p><strong>Outputs [</strong> [YYYYMMDD is year month day of month]</p> <p>ProbabilityNot0Not100.zip</p> <p>SSN.prob.btwn.YYYYMMDD.v3.tif - from classification random forest, probability of being between 0 and 100</p> <p> </p> <p>Probability100fSCA</p> <p>SSN.pro.hundred.YYYYMMDD.v3.tif - from classification random forest, probability of being 100</p> <p> </p> <p>RegressionResult.zip</p> <p>SSN.regression.YYYYMMDD.v3.tif - from prediction random forest</p> <p> </p> <p>Final_Downscaled.zip</p> <p>SSN.downscaled.YYYYMMDD.v3.3e+05.tif - final product (combination of classification and prediction)</p>
FIGURE. Typical habitats of Ramalina species on northern South America. A. High paramo, Laguna Anteojos, Sierra Nevada de Merida, where grows on rocks R. anteojina at 4100 m. B. Sub-paramo (timberline), La Aguada, Sierra Nevada de Merida, 3100 m, where are found R. dictyota and R. reducta on shrubs. C. Andean cloud forest, La Victoria, Sierra Nevada de Merida where R. cochlearis, R. cumanensis and R. victoriana are found growing as epiphytes. D. Populations of R. usnea, R. morrocoyensis and R. paradisensis growing as epiphytes on mangroves and Suriana maritima at sea level, National Park Morrocoy, state Falcón; the latter two species are known only from this locality. E. Ramalina usnea is the only species of this genus reported from the Alto Orinoco, Amazonas, near La Esmeralda, 150 m, growing as corticolous in submontane forests, at the top of the picture the Cerro Duida. F. Xerophytic forests from the National Park Cerro Santa Ana, state Falcón, where Ramalina santanensis and R. microphylla are known only growing on soil and rocks at 200–400 m. Photos V. Marcano. in The genus Ramalina Acharius (Ascomycota, Lecanoromycetes, Ramalinaceae) in northern South America
FIGURE. Typical habitats of Ramalina species on northern South America. A. High paramo, Laguna Anteojos, Sierra Nevada de Merida, where grows on rocks R. anteojina at 4100 m. B. Sub-paramo (timberline), La Aguada, Sierra Nevada de Merida, 3100 m, where are found R. dictyota and R. reducta on shrubs. C. Andean cloud forest, La Victoria, Sierra Nevada de Merida where R. cochlearis, R. cumanensis and R. victoriana are found growing as epiphytes. D. Populations of R. usnea, R. morrocoyensis and R. paradisensis growing as epiphytes on mangroves and Suriana maritima at sea level, National Park Morrocoy, state Falcón; the latter two species are known only from this locality. E. Ramalina usnea is the only species of this genus reported from the Alto Orinoco, Amazonas, near La Esmeralda, 150 m, growing as corticolous in submontane forests, at the top of the picture the Cerro Duida. F. Xerophytic forests from the National Park Cerro Santa Ana, state Falcón, where Ramalina santanensis and R. microphylla are known only growing on soil and rocks at 200–400 m. Photos V. Marcano.
Supporting data for: Investigating conifer water use patterns across temporal and topographic gradients in the southern Sierra Nevada
<p>Access to a reliable water source plays an integral role in tree function and survival. Water is a critical component of tree physiological processes, with trees that experience water stress exhibiting lower stomatal conductance (Irvine et al. 1998, Panek and Goldstein 1999), reduced photosynthetic and growth rates (Grieu et al. 1988, DeLucia and Heckathorn 1989, Adams and Kolb 2005, Truettner et al. 2018), and increased risk of hydraulic failure (Brodribb and Cochrad 2009, Anderegg and Anderegg 2013). As droughts increase in frequency, severity, and duration globally (Allen et al. 2015), access to a reliable water source such as deep soil water or water stored in fractured bedrock (i.e, hydraulic refugia) may dictate how trees respond to periods of water stress (McDowell et al. 2019). For example, studies in the southwestern United States have indicated that trees with access to deeper, more reliable water sources experience lower rates of mortality during drought periods (Grossiord et al. 2017, McDowell et al. 2019). While the effect of water availability on tree function and survival is well studied, whether the primary water source used by trees varies through time and across topographic gradients remains poorly understood. Understanding variability in tree water use patterns may provide insight to how forests will respond to increasing water stress under climate change.</p>
Insect diversity over 36 years at a protected Sierra Nevada (California) site
Open the record for dataset details and reuse information.
Species and environmental datasets from Sierra Nevada, CA (USA) streams in lake-stream networks
Open the record for dataset details and reuse information.
Supporting data for: Investigating conifer water use patterns across temporal and topographic gradients in the southern Sierra Nevada
Open the record for dataset details and reuse information.
Drainage basins serve as multiple glacial refugia for alpine habitats in the Sierra Nevada Mountains, California
Open the record for dataset details and reuse information.
Data from: The effect of shrub cover on conifer water-use patterns, growth, and response to climate change in the southern Sierra Nevada
Open the record for dataset details and reuse information.
Data from: Recent drought and tree mortality effects on the avian community in southern Sierra Nevada: a glimpse of the future?
Open the record for dataset details and reuse information.
Data from: From lidar waveforms to vegetation products: 7380 km2 of high-resolution airborne and simulated GEDI data over Sierra Nevada, California
Open the record for dataset details and reuse information.
Multi-scale drivers of soil resistance predict vulnerability of seasonally wet meadows to trampling by pack stock animals in the Sierra Nevada, USA
Open the record for dataset details and reuse information.
Climate sensitivity of Sierra Nevada Lakes
We analyzed the thermal response in the upper mixed layer of a lake in the Sierra Nevada of California to interannual variation in air temperature, snow deposition, and other climate factors to characterize relative effects on water temperature. We then use summer temperature data from 19 lakes to understand how the relative importance of snow and other factors governing lake temperature vary at broad spatial scales and predict sensitivity to warming in over 1600 lakes across the region. Our study has three specific objectives: 1) to characterize how water temperatures in mountain lakes are responding to variation in air temperature, snow deposition, and other climate factors; 2) to evaluate scaling relationships for water temperature using landscape and lake morphometric attributes; and 3) using those scaling relationships, to identify lakes that are most sensitive to warming from ongoing changes in climate. Our results emphasize the high rate of climate warming taking place in mountain ecosystems, and demonstrate the substantial role of snowpack in governing lake temperature. We illustrate the extent to which warming within lakes scales with elevation and lake morphometric attributes, and use those empirical relationships to identify lakes most sensitive to ongoing changes in climate.
Climate drivers of summer warming in Emerald Lake, Sierra Nevada, California
Mountain lakes experience extreme inter-annual climate variation as well as rapidly warming air temperatures, making them ideal systems to understand lake-climate responses. Snowpack and water temperature are highly correlated in mountain lakes, but we lack a complete understanding of underlying mechanisms. Motivated by predicted declines in snowfall with future temperature increases, we investigated how surface heat fluxes and lake temperature responded to variation in snowpack, ice-duration, and weather in a typical high elevation lake in the Sierra Nevada, California. Ice duration determined the phenology of lake exposure to solar radiation, and was the dominant mechanism linking snowpack to lake temperature. The relative importance of heat loss fluxes (longwave radiation, latent and sensible heat exchange) varied among wet and dry years. Declines in snowpack and ice cover in mountain systems will reduce the scale of variation in lake thermal responses and increase the responsiveness of lake warming to atmospheric forcing.
FIGURE 4. Anal lobe. A, M in The genus Micandra Staudinger (Lepidoptera: Lycaenidae: Theclinae) in Colombia, with the description of a new species from the Sierra Nevada de Santa Marta
FIGURE 4. Anal lobe. A, M. dignota; B, M. stephanieae (Holotype); C, M. aegides.
Distribution. EC Sierra Nevada, EC California (WC USA). in Soricidae
Distribution. EC Sierra Nevada, EC California (WC USA).
Figure 2 from: Sánchez-Pacheco SJ, Nunes PMS, Marques-Souza S, Rodrigues MT, Murphy RW (2017) Formal recognition of the species of Oreosaurus (Reptilia, Squamata, Gymnophthalmidae) from the Sierra Nevada de Santa Marta, Colombia. ZooKeys 691: 149-162. https://doi.org/10.3897/zookeys.691.13595
Figure 2 - Oreosaurus serranus sp. n. (paratype, ROM 53609 [68.6 mm SVL]) in life. Photos: S.M.S (top) and Jhon Jairo Ospina-Sarria (bottom).
Figure 1 from: Sánchez-Pacheco SJ, Nunes PMS, Marques-Souza S, Rodrigues MT, Murphy RW (2017) Formal recognition of the species of Oreosaurus (Reptilia, Squamata, Gymnophthalmidae) from the Sierra Nevada de Santa Marta, Colombia. ZooKeys 691: 149-162. https://doi.org/10.3897/zookeys.691.13595
Figure 1 - Oreosaurus serranus sp. n. (holotype, ROM 53608 [70.4 mm SVL]). Dorsal, lateral and ventral views of the head, and ventral view of the pelvic region.
Figure 5 from: Sánchez-Pacheco SJ, Nunes PMS, Marques-Souza S, Rodrigues MT, Murphy RW (2017) Formal recognition of the species of Oreosaurus (Reptilia, Squamata, Gymnophthalmidae) from the Sierra Nevada de Santa Marta, Colombia. ZooKeys 691: 149-162. https://doi.org/10.3897/zookeys.691.13595
Figure 5 - Type locality (top) and habitat (bottom) of Oreosaurus serranus sp. n. in the Sierra Nevada de Santa Marta, Colombia. Photos: Jhon Jairo Ospina-Sarria (top) and S.M.S (bottom).
Figure 4 from: Sánchez-Pacheco SJ, Nunes PMS, Marques-Souza S, Rodrigues MT, Murphy RW (2017) Formal recognition of the species of Oreosaurus (Reptilia, Squamata, Gymnophthalmidae) from the Sierra Nevada de Santa Marta, Colombia. ZooKeys 691: 149-162. https://doi.org/10.3897/zookeys.691.13595
Figure 4 - Distribution of Oreosaurus serranus sp. n. in the northwestern slopes of the Sierra Nevada de Santa Marta, northern Colombia. Pentagon indicates type locality.
Figure 3 from: Sánchez-Pacheco SJ, Nunes PMS, Marques-Souza S, Rodrigues MT, Murphy RW (2017) Formal recognition of the species of Oreosaurus (Reptilia, Squamata, Gymnophthalmidae) from the Sierra Nevada de Santa Marta, Colombia. ZooKeys 691: 149-162. https://doi.org/10.3897/zookeys.691.13595
Figure 3 - Oreosaurus serranus sp. n. Sulcate (left), lateral (center) and asulcate (right) views of the right hemipenis of ROM 53610 (paratype).
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.