translate English to French: However, when the 1981-82 index of abundance (3,302 SE=958) and the 1998-99 estimates (735, SE=025) are compared, the difference is significant (Heide-Jørgensen and Acquarone 2002, Innes and Stewart 2002).
Cependant, lorsque l’indice d’abondance de 1981-1982 (3 302, SE = 958) est comparé à celui de 1998-1999 (735, SE = 025), la différence est significative (Heide-Jørgensen et Aquarone, 2002; Innes et Stewart, 2002).