Fig. 1
From: Amphibian breeding phenology influences offspring size and response to a common wetland contaminant
Map of wood frog source populations (Google Earth Pro version 7.3, Google, California, USA); Map of the wood frog source populations from western Pennsylvania, USA used in the experiments across the years 2018 and 2019. In-lay shows the broader geographic area of Pennsylvania, USA. The black circle within the in-lay shows the sampling region from which the populations were collected. Blue pins represent source populations of the earlier-breeding cohorts, and red pins represent source populations of the later-breeding cohorts