Possible Results:
haya naturalizado
Present perfect subjunctive yo conjugation of naturalizar.
haya naturalizado
Present perfect subjunctive él/ella/usted conjugation of naturalizar.

naturalizar

Es posible que, hacia fines del siglo pasado, en estas tierras sobrecargadas por el auge de ganado ovino, se haya introducido esta especie y luego se haya naturalizado.
It is possible that, toward ends of last century, in these lands overloaded by the peak of having won ovino, this species has been introduced and then it has been naturalized.
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to pour