Table 2.

Comparison of models^1,2 explaining variation in abundance of White Mountain Fritillary counted at survey points during 2012 and 2013 in the alpine zone of the Presidential Range, NH, USA.

Covariates	No. Parameters	AIC	$\mathrm{\Delta }$AIC
Year + no. inflorescences + plant community (negative binomial)	17	797.01	0
Year + no. inflorescences + plant community (Poisson)	16	879.85	82.84
Year + no. inflorescences + plant community + week	17	881.84	84.83
Plant community	16	871.86	100.89
Plant community + week	15	872.68	101.41

¹ Twenty-six other models with $\mathrm{\Delta }$AIC >105 were considered but are not shown here. ² Each of the best-supported models was fit with the hazard-rate function; none of the models using the half-normal function were supported by the data.