Calculate_TempStressIndex: Evaluate Species Specific Temperature Stress

In msleckman/ESM262ClimatePackage: Climate Change Impacts Evaluation

Description

Function to calculate temperature stress status for each individual species on the basis of air temperature values.

Usage

Calculate_TempStressIndex(climdata, speciesdf)

Arguments

climdata	Data frame of climate data, including temperature, precipitation, water year, and dates
speciesdf	Data frame of species temperature and precipitation characteristics

Details

Temperature stress evaluted by computing the number of annual climate stress days, or the number of days per year where tmax >86 deg F (>30 deg C). Air temperatures of >86 deg F (>30 deg C) are considered high stress temperatures for most plant species (see references). If the number of species tolerable temperature stress days <= climate stress days, than the species stressed column equals yes (species faces temperature stress), otherwise it equals no. There is a unique stressed column for each species, with the species identifier as the column name header. Plant characteristic information and climate tolerance information is sourced from the USDA.

This function can be used to assess which species face reoccurring temperature stress in the region, and may need additional support.

Value

StressDF

Data frame including the number of annual high temperature stress days and species temperature stress status by year

Author(s)

Sofie McComb & Margaux Sleckman

References

http://agron-www.agron.iastate.edu/courses/Agron541/classes/541/lesson04a/4a.2.html; https://plants.usda.gov/

msleckman/ESM262ClimatePackage documentation built on June 15, 2019, 2:44 p.m.