Fig 3. Reproduction functions.

The A) probability of reproduction and B) fecundity functions, C) recruit size distribution, and D) reproduction kernel of the San Francisco gartersnake (Thamnophis sirtalis tetrataenia) integral projection model. In A, circles at the top of the plot (y = 1) represent snout-vent lengths (SVL) or females that were gravid, circles at the bottom of the plot (y = 0) represent SVLs of females that were not gravid. The mean fit line and 95% credible interval (gray shading) were estimated using a Bayesian implementation of logistic regression. In B, circles are observed embryo counts of examined females; the mean fit line and 95% credible interval were estimated using a Bayesian implementation of a Poisson regression. In D, the shade of gray represents the density of the contribution of a snake at size x at time t on the x-axis to the recruit size at time t+1 on the y-axis.