Study sites and years. Rachel B. Anderson 10.1371/journal.pone.0213426.s001 https://plos.figshare.com/articles/journal_contribution/Human_traffic_and_habitat_complexity_are_strong_predictors_for_the_distribution_of_a_declining_amphibian/7815077 <p>Survey years for parks and ponds included in a field study of presence/absence of California Red-legged Frogs (CRLF; <i>Rana draytonii</i>) and American Bullfrogs (BF; <i>Lithobates catesbeianus</i>) in Central California. Includes presence of large anuran species, either <i>R</i>. <i>draytonii</i> (CRLF), <i>L</i>. <i>catesbeianus</i> (BF), both present (both), or neither (none).</p> <p>(PDF)</p> 2019-03-07 18:35:45 amphibian Invasive species habitat California Red-legged Frog regression tree approach pond surface area American Bullfrog California Red-legged Frogs predictor