In 1924, American bison were brought to Santa Catalina Island, leading to a substantial rise in their population. However, these non-native creatures destabilized the local ecology and caused soil erosion. Genetic tests indicated that numerous bison possessed DNA from domestic cattle, raising concerns about their integration into native wildlife. To control their numbers, conservationists introduced immunocontraception, though the herd’s future remains ambiguous amidst ecological and historical debates.
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