README 


Data sources

This project was made possible by the many studies that researchers have conducted and published. We encourage future studies using these data to cite the original articles. 

At the start of the supplemental information we provide citations to original data sources for forest inventory tree plot data and for range shift data (Table S1).




Below we provide brief explanations of column headings for Dataset S1 (data table of summarized range shift data) and Dataset S3 (data table of summarized tree plot data)



Information for Dataset S1


Each row contains information for one community 

Key columns are as follows:

study_spatial_scale = ÒlocalÓ or ÒregionalÓ, see main text for definition

duration = number of years elapsed between historic and modern surveys

temp_change = estimated temperature change in degrees Celsius between historic and modern surveys, see also Òtemp_change_and_exp_shift_notesÓ 

expected_shift_given_in_study = ÒyesÓ or ÒnoÓ, depending on whether study calculated an expected upslope shift given estimates of local warming

lapse_rate = information on the adiabatic lapse rate for the site; we either used the lapse rate reported by the authors of the study or an empirically measured lapse rate from a nearby study within this dataset

expected_shift = expected shift given estimates of local warming and estimates of lapse rate. Unit is meters.

species_level_data = ÒyesÓ or ÒnoÓ, depending on whether data for individual species is presented in paper

sp_n = number of species for which data is reported

sp_n_mean = number of species for which data on shifts at mean/optimum range shifts are reported

shift_mean  = mean observed shift at speciesÕ mean/optimum range 

shift_mean_se  = standard error of observed shift at speciesÕ mean/optimum range 

responsiveness_mean = temperature tracking score for shifts at speciesÕ mean/optimum range (= observed shift / expected shift)

sp_n_lower_limit = number of species for which data on shifts at lower elevation range shifts are reported

shift_lower_limit  = mean observed shift at speciesÕ lower elevation range limit

shift_lower_limit_se  = standard error of observed shift at speciesÕ lower elevation range limit

responsiveness_lower = temperature tracking score for shifts at speciesÕ lower elevation range limit (= observed shift / expected shift)

sp_n_upper = number of species for which data on shifts at upper elevation range shifts are reported

shift_upper_limit  = mean observed shift at speciesÕ upper elevation range limit

shift_upper_limit_se  = standard error of observed shift at speciesÕ upper elevation range limit

responsiveness_upper = temperature tracking score for shifts at speciesÕ upper elevation range limit (= observed shift / expected shift)

weighted_shift = shift at speciesÕ (1) mean/optimum; (2) lower elevation range limit; and (3) upper elevation range limit, weighted by the number of species for each shift type

weighted_se = standard error of the weighted shift (see Òweighted_shiftÓ)

responsiveness = overall temperature tracking score for each community (= weighted_shift / expected_shift)

extraction_notes = notes on how data was extracted from source publications

temp_change_and_exp_shift_notes = notes for how estimated temperature change was calculated and how expected shift was calculated





Information for Dataset S3

Each row contains information for one tree plot 

Key columns are as follows:

mat = mean annual temperature

cti_roc = community temperature index rate of change

mat_roc = mean annual temperature rate of change

t_tracking_ratio = temperature tracking, calculated as a ratio