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Topological network of ponds of San Carlos, Maldonado Department (Uruguay), according to distances related to the dispersal capacity of L. catesbeianus (left). Uninvaded ponds appear in blue and those invaded by L. catesbeianus, in red, orange and yellow (according to their degree of invasion, described in methods). San Carlos' pond network map shows the stepping stones (black middle point), the connectors (square symbol) and the peripheral hubs (triangle symbols). Bullfrog invaded ponds are in red on the map (right).
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