Journal Article Fratercula arctica Iceland Research Support, Non-U.S. Gov't chick production colapso del ecosistema ecosystem collapse expected loss of ecosystems expected loss of species extinción de especies factor de amenaza long-term temperature trend population decline pérdida esperada de ecosistemas pérdida esperada de especies red list index sea surface temperature species extinction threat factor índice de listas rojas 威胁因素 物种灭绝 物种预期丧失 生态系统崩溃 生态系统预期丧失 红色名录指数