Use of radio tracking to improve the estimation by track counts of the relative abundance of red fox

Use of rad io track in g to im prove th e estim ation by trac k counts of the rela tiv e ab u n d an ce of red fox.A cta theriol., 32, 30: 489-492 [W ith 1 Fig. ] Radio track in g of red foxes Vulpes vulpes (Linnaeus, 1758) in Coto D oñana (SW Spain) w as used to obtain a correction facto r to tran sfo rm th e n u m b e r of fox trails crossing a tran se ct into an index of relativ e abundance, expressed as in dividual foxes p er km.R esults prove th a t th e p a tte rn s of fox m ovem ent and th e tra n se c t position greatly influence th e d ata obtained through trac k counts.