Table 8.

Amount of variation explained by multiple regressions of select traits on environmental variables (R²) and environmental variables included in models

Trait*	R2	Environmental variables in model†
BS1	0·57	LONG, ELEV, FALLFRST, MAYPRE, JULMXT, FEBMNT, JUNMNT
TOTWT	0·27	ELEV, JULPRE, AUGPRE, MAYMXT, JULMXT, APRMNT, JUNMNT, JULMNT, AUGMNT, DECMNT
EM	0·38	LONG, ELEV, FEBPRE, MAYPRE, APRMXT, MARMNT, SEPMNT
RTSH	0·20	LONG, ELEV, OCTPRE, APRMXT, JUNMXT, DECMXT, OCTMNT
BB2	0·36	LAT, LONG, ELEV, JANPRE, MARPRE, SEPPRE, NOVPRE, FEBMXT, AUGMNT, SEPMNT, DECMNT
TAPER	0·28	LAT, SEPPRE, DECPRE, NOVMXT

^*See Table 1 for trait codes and units of measurement.

^†Model parameters are available upon request from the corresponding author. Key to environmental variables: ELEV = elevation, LAT = latitude, LONG = longitude, FALLFRST = date of last autumn frost; the other variable codes refer to the precipitation (PRE) or minimum (MNT) and maximum (MXT) average daily temperature in that month.