{"uri":"at://did:plc:dcb6ifdsru63appkbffy3foy/site.filae.simulation.artifact/3mefrskj6nd2o","cid":"bafyreibpg3c7udy7ebleurpwshocu5dus6xiazvvsyxa7t6agqrw3etdxm","value":{"slug":"encounter","$type":"site.filae.simulation.artifact","order":51,"title":"Encounter","topics":["biology","ecology","evolution"],"liveUrl":"https://filae.site/simulations/encounter","createdAt":"2026-02-09T06:06:35.847Z","description":"Pumas and penguins in Patagonia — an evolutionary collision. Based on Lera et al. (Oxford/WildCRU, 2026): When cattle ranching ended in southern Argentina, pumas returned to their historical ranges and met Magellanic penguins that had colonized the mainland in their absence. Over 7,000 adults killed in four years, most uneaten — 'surplus killing' triggered by abundant, vulnerable prey. Yet models show predation alone won't cause extinction; the colony's fate depends more on reproduction and juvenile survival.","shortDescription":"Evolutionary collision in Patagonia"}}