Filters: Tags: tree mortality (X) > partyWithName: Western Ecological Research Center (X)

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Mortality factors for dead trees from a subset of plots from the Sierra Nevada Forest Dynamics Plot Network from 1998 to 2010 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 Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Sequoia-Kings Canyon National Park, Sierra Nevada, USGS Science Data Catalog (SDC), Yosemite National Park, bark beetles, All tags... tree mortality, tree mortality factors, tree pathogens, Fewer tags Sequoia and Yosemite National Parks Mortality and Fire Data (1990-2019) for Competition-Fire-Drought Interaction Analysis This dataset records mortality-- including involvement of bark beetles-- and burn severity information for trees in long term forest dynamics plots in Sequoia National Park and Yosemite National Park that experienced fire. These data support the following publication: Furniss, T.J., Das, A.J., van Mantgem, P.J., Stephenson, N.L. and Lutz, J.A., 2021. Crowding, climate, and the case for social distancing among trees. Ecological Applications, p.e2507, https://doi.org/10.1002/eap.2507 Categories: Data; Tags: California, Forestry, Sequoia National Park, Sierra Nevada, USGS Science Data Catalog (SDC), All tags... Yosemite National Park, bark beetle, biota, fires, forest ecosystems, insects, plot sampling, temperate forest, tree mortality, Fewer tags Calibration and Validation Data and Model Coefficients for Mixed Conifer Vulnerability Project from Sequoia and Kings Canyon National Park 2015 to 2019 These datasets contain the attributes of individual trees located in and around Sequoia and Kings Canyon national parks. Attributes include remote sensing indices, terrain characteristics, and-- for the calibration data-- tree size and growth rates. Calibration data (mixedconifervulnerability_calibrationdataset.csv) were collected in long term research plots where trees are visited annually to check for mortality and periodically re-measured for diameter to capture growth. Validation data (mixedconifervulnerability_validationdataset.csv) were collected as part of a randomized sample located within a remote sensing 'flight box'. Remote sensing indices and terrain variables for both datasets were extracted from National... Categories: Data; Tags: California, Ecology, Forestry, Sequoia and Kings Canyon National Parks, Sierra Nevada, All tags... USGS Science Data Catalog (SDC), biota, droughts, forest ecosystems, mixed conifer forest, remote sensing, temperate forest, tree mortality, vegetation, vulnerability, Fewer tags Tree mortality in blue oak woodlands in Sequoia National Park during extreme drought These data were collected to quantify oak mortality during the 2014-2017 drought. 30 tenth hectare drought plots were established throughout the blue oak woodland of Sequoia National Park. Information on species, size, and mortality were collected for all standing trees in each plot. In addition, two long-term 2.25 ha plots were established, in which the same data were collected. These data are associated with the following publication: Das, A.J., Ampersee, N.J., Pfaff, A.H., Stephenson, N.L., Swiecki, T.J., Bernhardt, E.A., Haggerty, P.K. and Nydick, K.R., 2020. Tree mortality in blue oak woodland during extreme drought in Sequoia National Park, California. Madroño, 66(4), pp.164-175. Categories: Data; Tags: Ecology, Sequoia National Park, USGS Science Data Catalog (SDC), biota, blue oak, All tags... droughts, tree mortality, vegetation, Fewer tags Tree mortality in Sequoia National Park from 2004 to 2007 and during severe drought in 2014 to 2017 These data describe tree mortality and the factors associated with tree mortality for a variety of plots in Sequoia National Park. Most of the data were collected between 2014 and 2017 (during an extremely severe drought), along with some comparison data from 2004 to 2007. These data support the following publication: Stephenson, N.L., Das, A.J., Ampersee, N.J., Bulaon, B.M., and Yee, J.L., In review. Which trees die during drought? The key role of insect host-tree selection, Journal of Ecology Categories: Data; Tags: California, Forestry, Sequoia National Park, Sierra Nevada, USGS Science Data Catalog (SDC), All tags... bark beetle, biota, droughts, forest dieback, forest disturbance, forests, insect outbreak, invertebrates, stress, temperate forest, tree mortality, Fewer tags Dead Tree Detection Validation Data from Sequoia and Kings Canyon National Parks Most of these data were collected in order to create a database of tree locations for use in calibrating remote sensing tools and products, particularly dead tree detection tools and canopy species maps. Data include tree locations, species identification, and status (live, dead, and, if dead, sometimes includes information on foliage and twig retention). They are a collection of different sampling efforts performed over several years, starting in a period of severe drought mortality. One csv table is included that shows data and validation results for an additional dataset that was used to test the NAIP derived dead tree detection model that is associated with this data release. Locations are not included for that... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: California, Forestry, Kings Canyon National Park, Sequoia National Park, Sierra Nevada, All tags... Sierra Nevada, USGS Science Data Catalog (SDC), biota, conifer forest, conifer forests ecosystems, droughts, forest ecosystems, remote sensing, remote sensing validation, tree mortality, Fewer tags Snag Fall Data from Long Term Forest Dynamics Plots in the Sierra Nevada of California through 2021 These snag (dead tree) fall data were collected as part of long term forest dynamics data. Tree fall data were collected non-systematically as text comments until 2013, after which explicit snag fall data were collected on an annual basis. This particular dataset includes data from 23 plots in old-growth mixed conifer and montane conifer forests in Sequoia-Kings Canyon and Yosemite National Parks. The plots range in size from 0.9 ha to 2.5 ha and were established from 1982 to 2001. We used demography plot data through 2021 (collected before the extensive KNP Complex wildfire burned many of the plots). Before 2021, four of the 23 plots had experienced relatively recent prescribed burns or wildfires. When established,... Categories: Data; Tags: California, Forestry, Sequoia National Park, Sierra Nevada, USGS Science Data Catalog (SDC), All tags... Yosemite National Park, biota, droughts, forest dynamics, forest ecosystems, mixed conifer, snag, tree fall, tree mortality, vegetation, Fewer tags