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Tree mortality in blue oak woodlands in Sequoia National Park during extreme drought


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Das, A.J., and Stephenson, N.L., 2019, Tree mortality in blue oak woodlands in Sequoia National Park during extreme drought: U.S. Geological Survey data release,


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.


Point of Contact :
Nathan L Stephenson
Originator :
Adrian J Das, Nathan L Stephenson
Metadata Contact :
Adrian J Das
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
Western Ecological Research Center
USGS Mission Area :

Attached Files

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oakdroughtplotdata.csv 2.63 KB
oakdroughttreedata.csv 61.14 KB
oaklongterm.csv 77.1 KB
bofboundxy.csv 653 Bytes
dopboundxy.csv 653 Bytes


To assess mortality of trees during the recent severe drought and to establish a long-term monitoring program in the blue oak woodlands in the park.


The authors of these data require that data users contact them regarding intended use and to assist with understanding limitations and interpretation. Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.



  • USGS Data Release Products
  • USGS Western Ecological Research Center



Additional Information


Type Scheme Key
DOI doi:10.5066/P97NBUTC

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