Table 1. List of hypotheses for both Asclepias and monarchs, along with relevant predictor variables.

Hypothesis	Variables
Asclepias
Cold temperatures limiting	MAT, MTCM, TAR, TS
Warm temperatures limiting	MAT, MTWQ, MTWM
Precipitation limiting	AP, PWQ, PCQ
Geographic constraints	ELEV, SLO, RGH, RUG
All Variables	All variables
Monarchs
Habitat limited	Predicted Asclepias distribution
Geographic constraints	ELEV, SLO, RGH, RUG
Environmental constraints	All environmental variables
Environment and habitat	All environmental variables and predicted Asclepias distribution
All Variables	All variables

MAT = Mean annual temperature, MTWQ = Mean temperature of the warmest quarter, MTWM = Max temperature of the warmest month, AP = Annual Precipitation, PWQ = Precipitation of the warmest quarter, PCQ = Precipitation of the coldest quarter, MTCM = Minimum temperature of the coldest month, TAR = Temperature annual range, TS = Temperature Seasonality, ELEV = elevation, SLO = Slope, RGH = Roughness, RUG = Ruggedness.