Replication data for Fig 11.4, BGUW, Yearlings per litter, annual variation, 19 March 2026

Species Year of research Mean number of yearlings per litter Standard error of this mean (SEM) BTPD 1 0.6 0.5 GPD 1 0.469 0.15 UPD 1 2.13 0.276 WTPD 1 0.231 0.15 BTPD 2 1.792 0.248 GPD 2 0.868 0.152 UPD 2 1.474 0.309 WTPD 2 1.161 0.203 BTPD 3 1.826 0.232 GPD 3 2.25 0.2 UPD 3 2.378 0.227 WTPD 3 1.148 0.205 BTPD 4 0.882 0.197 GPD 4 2.323 0.173 UPD 4 1.5 0.198 WTPD 4 1.571 0.441 BTPD 5 1.227 0.246 GPD 5 1.972 0.165 UPD 5 1.898 0.205 WTPD 5 1.037 0.173 BTPD 6 2 0.249 GPD 6 0.726 0.15 UPD 6 0.5 0.15 WTPD 6 0.846 0.19 BTPD 7 1.25 0.208 UPD 7 1.116 0.183 BTPD 8 1.714 0.251 UPD 8 1.13 0.202 BTPD 9 1.806 0.224 UPD 9 1.5 0.158 BTPD 10 1.304 0.23 UPD 10 0.927 0.154 BTPD 11 1.87 0.254 BTPD 12 1.568 0.214 BTPD 13 1.371 0.217 BTPD 14 1.6 0.235 FILE DESCRIPTION Keywords: BGUW, Annual variation of yearlings per litter File name: Fig 11.4, BGUW, Yearlings per litter, annual variation, 19 March 2026 BTPD = black-tailed prairie dog; GPD = Gunnison's prairie dog; UPD = Utah prairie dog WTPD = white-tailed prairie dog All data are form litters of >=1 weanling--i.e., I have excluded litter size = 0 for this figure I have 6 years of data for GPDs and WTPDs, 10 years of data for UPDs, and 14 years of data for BTPDs.

Data or GPDs are from Petrified Forest National Park only, where I studied GPDs for 7 consecutive years (1989 through 1995). I studied GPDs at the Redondo Meadow Colony (RMC) at Valles Caldera National Preserve (VCNP) for only 4 years, (2013 through 2016), and I studied GPDs at the Visitor Center Colony at VCNP for only 2 years (2017 and 2018) NO DATA from any colony in the last year of research, because I had no information on whether weanlings from the last year survived to be yearlings.