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1,200 results for “Sierra”
Data from: Cryptic elevational zonation in trapdoor spiders (Araneae, Antrodiaetidae, Aliatypus janus complex) from the California southern Sierra Nevada
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Data from: Repeated high severity fire effects on soil biogeochemistry in the Sierra Nevada, California
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Data from: Sierra Nevada mountain lake microbial communities are structured by temperature, resources, and geographic location
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Repeated fuel treatments fall short of fire-adapted regeneration objectives in a Sierra Nevada mixed conifer forest, USA
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Burden of cardiometabolic risk factors and preclinical target organ damage among adults in Freetown, Sierra Leone: a community-based health-screening survey
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Data for: Sierra Nevada mixed-conifer regeneration response to repeated burning varies by species
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Sierra Nevada de Santa Marta frog locality data
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Data from: Changing ecological communities along an elevation gradient in seasonally dry tropical forest on Hispaniola (Sierra Martín García, Dominican Republic)
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Data from: Tree growth responses to extreme drought after mechanical thinning and prescribed fire in a Sierra Nevada mixed-conifer forest, USA
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Satellite data of the 2018 Sierra Negra eruption in the Galápagos islands
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Evapotranspiration data from eddy-covariance flux-tower measurements and Landsat imagery in California’s Sierra Nevada from 1985 to 2019
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Southern Sierra Critical Zone Observatory (SSCZO), Wolverton Creek meteorological data, soil moisture and temperature
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Dataset for: Cascading effects of freshwater salinization on plankton communities in the Sierra Nevada
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A Long-Term Micrometeorological and Hydrological Dataset Across an Elevation Gradient in Sagehen Creek, Sierra Nevada, California
We compile and release ~55 years of daily and ~20 years of hourly Micrometeorological and hydrological data from Sagehen Creek a 28 km???^2??? watershed with observation sites spanning 1771 to 2670 m. A USGS gauging station measures streamflow at the catchment outlet. There are three Snow Telemetry (SNOTEL) stations: Independence Camp(2128 m), Independence Creek (1962 m) and Independence Lake (2541 m) that measure hourly precipitation, temperature, soil moisture (at 5, 20, and 50 cm), as well as daily snow water equivalent (SWE) and snow depth. A new method was used to estimate hourly precipitation data using quality controlled daily totals. A NOAA cooperative observer (COOP) station measures daily precipitation, temperature, SWE, and snow depth from 1953-1997 and then measures hourly precipitation, temperature, SWE, and snow depth, relative humidity, and solar radiation from 2001 through 2017 2001-present. There are an additional three towers with data beginning in 2009 measuring snow depth, SWE, solar radiation, barometric pressure, precipitation, relative humidity, and temperature: Tower 1 (1934m), Tower 3 (2114 m), and Tower 4 (2350 m). Wind speed, temperature, and relative humidity measured at 7.6 and 30.5 m at each site. Data from all stations were checked for poor QA/QC and substantial and sophisticated gap-filling techniques were deployed. This dataset holds potential for improving understanding of orographic processes and their implications for streamflow generation in a groundwater-dominated watershed. This data package mirrors the one available at https://doi.org/10.5281/zenodo.2590799. Please check this link for updates and additional information.
Chemistry and isotopic composition of resource pools in lakes of the Sierra Nevada, CA
The extent to which terrestrial organic matter supports aquatic consumers remains uncertain because factors regulating resource flows are poorly understood. We sampled 12 lakes throughout the Sierra Nevada (California, USA) spanning large gradients in elevation and size to evaluate how watershed attributes and lake morphometry influence resource flows to lake carbon pools and zooplankton. We found that the size and composition of carbon pools in lakes were often more strongly determined by watershed or lake features rather than by elevational position. Using three different tracers of resource origin (δ13C, Δ14C, C:N ratio), we found terrestrial contributions to most lake resource pools (DOC, POM, sediments) and pelagic consumers (zooplankton) were more strongly related to local-scale watershed features such as vegetation cover or watershed area:lake area rather than to elevation. Landscape patterns in multiple tracers indicated consistent contribution of within-lake C sources to bulk resource pools across elevations (POM, sediments, zooplankton). δ13C-enrichment of lake C pools and overlap with δ13C of terrestrial resources can arise due to reduced fractionation of 13C by phytoplankton under CO2 limitation, therefore we recommend careful consideration of potential environmental drivers when interpreting among-lake patterns in δ13C. Our findings emphasize the importance of local-scale variation in mediating terrestrial contributions to lake food webs.
Ice phenology and under-ice temperature and oxygen data for lakes of the Sierra Nevada, CA
<anchor id="_Hlk62995535"/>Warming winters will reduce ice cover and change under-ice conditions in temperate mountain lakes, where snow comprises most of winter cover on lakes. Snow-dominated mountain lakes are abundant and highly susceptible to climate warming, yet we lack an understanding of how climate variation and local attributes influence winter processes. We investigated climatic and intrinsic controls on ice phenology, water temperature, and bottom-water dissolved oxygen (DO) in 15 morphologically diverse lakes in the Sierra Nevada and Klamath mountains of California, USA, using high frequency measurements from multiple (2-5) winters. We found that ice phenology was determined by winter climate variables (snowfall, air temperature) that influence ice-off timing, whereas ice-on timing was relatively invariant among years. Lake size and morphology mediated the effect of climate on lake temperature and DO dynamics in early and late winter. Rates of hypolimnetic DO decline were highest in small, shallow lakes, and were unrelated to water temperature. Temperature and oxygen dynamics were more variable in small lakes because heavy snowfall caused ice submergence, mixing, and DO replenishment that affected the entire water column. As persistence of snow declines in temperate mountain regions, autumn and spring climatic conditions are expected to gain importance in regulating lake ice phenology. Water temperature and DO will likely increase in most lakes during winter as snowpack declines, but morphological attributes such as lake size will determine the sensitivity of ice phenology and under-ice processes to climate change.
FIGURE 3. Sarcohyla floresi UMMZ 239743 in A new species of Sarcohyla (Anura: Hylidae: Hylini) from the Sierra Madre del Sur of Guerrero and Estado de México, México
FIGURE 3. Sarcohyla floresi UMMZ 239743. Juvenile. (SVL = 37.7 mm) in (A) frontal, (B) lateral, and (C) posterior views.
Distribution. Patchily in W Africa with records from Guinea, Sierra Leone, Liberia, Mali, Burkina Faso, Ivory Coast, Ghana, and Nigeria. in Hipposideridae
Distribution. Patchily in W Africa with records from Guinea, Sierra Leone, Liberia, Mali, Burkina Faso, Ivory Coast, Ghana, and Nigeria.
Distribution. Very patchily in W Africa with records in Guinea, Sierra Leone, Liberia, and Ivory Coast in Hipposideridae
Distribution. Very patchily in W Africa with records in Guinea, Sierra Leone, Liberia, and Ivory Coast
FIGURE 3 in Abacaecus n. gen. walterrossii n. sp., a notable hypogean carabid species from Sierra Leone, Western Africa (Coleoptera, Carabidae, Pterostichinae)
FIGURE 3. Optical microscope images of Abacaecus walterrossii n. sp.: a) head in dorsal view, b) apex of elytra, c) aedeagus in left lateral view, d) aedeagus in dorsal view.
ScienceDex guides
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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.