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This dataset was used to summarize and analyze the mortality factors recorderd on dead trees in the Sierra Nevada Forest Dynamics Plot Network, which is managed by the Sequoia and Kings Canyon Field station of the U.S. Geological Survey's Western Ecological Research Center. Each row of the dataset represents an individual dead tree. These are dead trees that were recorded in the network from 1998 to 2010 for the subset of plots as described in the associated manuscript; These data support the following: Das, A.J., Stephenson, N.L., Davis, K.P. 2016. Why do trees die? Characterizing the drivers of background tree mortality. Ecology. 97(10): 2616-2627, https://doi.org/10.1002/ecy.1497
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This project used the NatureServe Climate Change Vulnerability Index tool to assess vulnerability of 140 bird species that breed in the Sierra Nevada and will develop a peer-reviewed Climate Change Adaptation Strategy for Sierra Nevada bird species that are most vulnerable to climate change. The Strategy provides recommendations for actions that managers can take now and in the future to bolster resilience to climate change.
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Our study addresses the general question of the degree to which wildlife species can adapt to, or possibly even modify, effects from climate change. We focused on five species of mammals in the alpine zone of the Sierra Nevada mountain range, including the federally endangered Sierra Nevada bighorn sheep and the American pika, a species recently proposed for listing due to the loss of populations from altered climatic conditions. It was expected that there will be an upward expansion of trees and shrubs from lower elevations and that many or even most alpine meadows will be converted to woody dominated communities. Meadows provide critical habitat for many alpine mammal species, and their conversion could represent...
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The Tenaya Lake Water Budget Study seeks to quantify and understand the water balance within the principal snow accumulation and runoff yielding zone in the Sierra Nevada Mountains. The Study operates stage sensors and data loggers to record Tenaya Lake inflows, water surface elevation, and outflow, with continuous annual data collection for the 21 square-kilometer watershed located in the alpine zone of Yosemite National Park. The Study began in September 2005 and includes discharge and water quality measurements. Water samples have been collected at several gage locations and analyzed for an extensive panel of dissolved constituents. Tenaya Lake lies in a glacially-scoured granitic basin. Murphy Creek, Tenaya...
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This data release includes information used to support the manuscript "Linking mesoscale meteorology with extreme landscape response: effects of narrow cold frontal rainbands (NCFR)". The included datasets and supplement include information related to the 22 March 2018 NCFR and associated shallow landslides in the Toulumne Canyon triggered by this event. The three datasets and one supplemental information document are: 1) mapped landslides where we created polygons for each landslide that occurred (Tuolumne Canyon Landslide Data Storm of 22 March 2018.kmz), 2) soil grain size data for landslide source and depositional zones (Tuolumne Canyon Grain Size Data Storm of 22 March 2018.xlsx), 3) a time series of rainfall...
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This project used the NatureServe Climate Change Vulnerability Index tool to assess vulnerability of 140 bird species that breed in the Sierra Nevada and will develop a peer-reviewed Climate Change Adaptation Strategy for Sierra Nevada bird species that are most vulnerable to climate change. The Strategy provides recommendations for actions that managers can take now and in the future to bolster resilience to climate change.
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This data release includes various data sets used to quantify the capacity of two rivers, the Merced and Tuolumne, in the Sierra Nevada of California for reintroduction of two species of anadromous salmonids, Steelhead and spring-run Chinook Salmon. The child pages linked below provide access to the following data sets: Topo-bathymetric digital elevation models of the river channels and adjacent floodplains produced by fusing lidar topography of dry areas with information on water depth derived from hyperspectral images. Sediment grain size measurements at distinct points along each river derived from close-range photographs of bar surfaces. Together, these data sets were used to model the suitability of the...
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This child data release includes fused topo-bathymetric digital elevation models of the Merced and Tuolumne Rivers in California used to support research on anadromous salmonids. The purpose of this study was to calculate the capacity for reintroduction of salmonids above impassable barriers. Airborne, near-infrared (NIR) LiDAR and hyperspectral imagery were acquired simultaneously in September 2014 from a Cessna Caravan, with the LiDAR data used to map topography of dry land and the imagery used to map water depth in the wetted channel. Topo-bathymetric DEMs of channels and floodplains with 1-m resolution were constructed for the study reaches by using remotely sensed hyperspectral image data to estimate water...


    map background search result map search result map How will Mammals in the Alpine Zone of the Sierra Nevada Mountains Respond to Future Climate? Assessing climate change vulnerability and developing a climate change adaptation strategy for Sierra Nevada birds Mortality factors for dead trees from a subset of plots from the Sierra Nevada Forest Dynamics Plot Network from 1998 to 2010 Assessing climate change vulnerability and developing a climate change adaptation strategy for Sierra Nevada birds Field, geotechnical, and meteorological data of the 22 March 2018 narrow cold frontal rainband (NCFR) and its effects, Tuolumne River canyon, Sierra Nevada Foothills, California Topographic and sediment grain size data used to evaluate potential habitat for anadromous salmonids on the upper Merced and Tuolumne Rivers in California Topo-bathymetric digital elevation models of the upper Merced and Tuolumne Rivers in California derived from hyperspectral image data and near-infrared LiDAR acquired in 2014 Streamflow and water chemistry in the Tenaya Lake Basin, Yosemite National Park, California Streamflow and water chemistry in the Tenaya Lake Basin, Yosemite National Park, California Field, geotechnical, and meteorological data of the 22 March 2018 narrow cold frontal rainband (NCFR) and its effects, Tuolumne River canyon, Sierra Nevada Foothills, California Topographic and sediment grain size data used to evaluate potential habitat for anadromous salmonids on the upper Merced and Tuolumne Rivers in California Topo-bathymetric digital elevation models of the upper Merced and Tuolumne Rivers in California derived from hyperspectral image data and near-infrared LiDAR acquired in 2014 Mortality factors for dead trees from a subset of plots from the Sierra Nevada Forest Dynamics Plot Network from 1998 to 2010 How will Mammals in the Alpine Zone of the Sierra Nevada Mountains Respond to Future Climate? Assessing climate change vulnerability and developing a climate change adaptation strategy for Sierra Nevada birds Assessing climate change vulnerability and developing a climate change adaptation strategy for Sierra Nevada birds