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Cheri A. Jones 



on hulls and movement of acorns might represent assessment. Of 

 the 450 acorns presented in 30 trials to 13 Podomys, 66% were 

 removed from bowls, whether opened or not. 



Food Supplementation Experiment — Individual trappability of 

 Florida mice captured on the Ordway Preserve ranged from 14 to 

 100% (Jones 1990). The average trappability for 5 years of trapping 

 was 57%. According to Hilborn et al. (1976), estimates of minimum 

 numbers of individuals by direct enumeration become more reliable 

 as trappability exceeds 50%. 



AC I GRID 



AC II GRID 

 SL GRID 



MONTH 



Fig. 1. Minimum number of individuals known alive (MNI) on the 

 Anderson-Cue I, Anderson-Cue II, and Smith Lake grids in Putnam County, 

 Florida. Arrows indicate beginning and ending of food supplementation on 

 Anderson-Cue I. 



Results of the food supplementation (Fig. 1) were similar to 

 those reported by Young (1983) in that Podomys disappeared during 

 the summer in spite of the additional food. Capture rates declined 

 sharply on ACI where extra food was provided, although mice persisted 

 in small numbers at burrows west and east of the grid. Maximum 

 trapping success for a single night was 9%, and was usually much 

 lower. Persistence (time between first and last captures) of mice on 

 the three grids was estimated (Table 1). It seems unlikely that the 

 decline on ACI was due to competition with immigrating rodents; 

 the only other rodents captured on these grids were flying squirrels 

 (Glaucomys volans). 



