Data from: Long-term climate and competition explain forest mortality patterns under extreme drought

Young DJN, Stevens JT, Earles JM, Moore J, Ellis A, Jirka AL, Latimer AM

Date Published: December 24, 2016

DOI: http://dx.doi.org/10.5061/dryad.7vt36

 

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Title Young_et_al_Data
Downloaded 47 times
Description Gridded tree mortality data based on annual aerial surveys conducted from 2009 to 2015, along with environmental variables used to explain mortality patterns. The data file contains one row per unique 3.5 km grid cell & year combination. The data frame covers all grid cells within the state of California where at least one Aerial Detection Survey (ADS) flight was taken between 2009 and 2015, so each grid cell position has between 1 and 7 years of data (reflected as 1 to 7 rows in the data file per grid cell position). The main response variables are mort.bin (presence of any mortality) and mort.tph (number of dead trees/ha reported for the given grid cell & year combination). The main predictor variables are a set of climatic and forest structure variables at the same spatial scale, as described in the primary publication. This file is an Excel workbook with two worksheets: the first worksheet describes the variables, and the second worksheet contains the data. This data file was created by compiling and processing various publicly-available data sources into a standardized grid; the R code used for this is included in this repository as "Young_et_al_Data_preparation.R". The code used for statistical analyses and plots based on this data file ("Young_et_al_Analysis.R") is included as well.
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Title Young_et_al_Data_preparation
Downloaded 31 times
Description Code for generating the data file (also contained in this repository) by compiling and processing publicly-available data sources.
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Title Young_et_al_Analysis
Downloaded 35 times
Description Code for performing statistical analyses and producing plots based on the gridded mortality data (also included in this repository).
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When using this data, please cite the original publication:

Young DJN, Stevens JT, Earles JM, Moore J, Ellis A, Jirka AL, Latimer AM (2016) Long-term climate and competition explain forest mortality patterns under extreme drought. Ecology Letters 20(1): 78-86. http://dx.doi.org/10.1111/ele.12711

Additionally, please cite the Dryad data package:

Young DJN, Stevens JT, Earles JM, Moore J, Ellis A, Jirka AL, Latimer AM (2016) Data from: Long-term climate and competition explain forest mortality patterns under extreme drought. Dryad Digital Repository. http://dx.doi.org/10.5061/dryad.7vt36
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