STATION NUMBERS 

 DEPTHS (FEET) 



TABLE 2 

 COMPARISON OF RESULTS IN MEASURING HER3IV0RY 



1234567 89 



0.5 3.5 5 15 30 30 60 90 120 



HERBIVORY (BITES/M 2 /H) FROM 



Visual Obs. 1981 



Visual Obs. 1982 



Time-lapse 1982 



MEAN 



Non-Denuding Fishes 

 3,269 170 28 

 448 273 518 147 230 

 7,061 1,567 3,325 1,630 1,151 



2,503 613 2,371 649 470 







94 



94 



Visual Obs. 1981 



Visual Obs. 1982 



Time-lapse 1982 



MEAN 



Denuding Fishes 

 3 2,774 170 28 

 532 193 48 39 

 936 2,687 4,326 1,151 



313 896 1,102 1,563 409 



39 



12 



12 



Visual Obs. 1981 



Visual Obs. 1982 



Time-lapse 1982 



MEAN 



Excavating Fishes 



2,476 * 



27 79 



2,660 







282 



1,721 







70 282 



235 



235 



Benthic Plates 

 Suspended Plates 



Diadema 

 Acmaea 



Total Herbivory From Fishes 



2,816 1,509 5,194 2,212 879 116 338 235 







Excavating Invertebrates (No/rrr ) 



0.8 3.8 14.3 17.5 3.9 0.2 0.3 0.5 



002 0.3 000 00 



Rate of Turf Biomass Loss 



GRAZING IMPACT ON: 

 Algal Turfs (g dry/mVday) 



2.8 1.35 0.933 -0.79 



On benthos 

 On Plates 

 Suspended Plates 

 % Grazed by Fish 



Macrophytes (% Thalassia eaten/day) 



2.04 14.9 1.45 0.74 49.8 25.2 



4.8 0.004 1.6 0.79 37.4 16.0 





 100 95 50 50 96 98 



% Coralline Grazed 

 7<> Grazed by Urchins 



Coral 1 ines 

 0.6 54.2 82.7 48.0 44.6 

 26.6 57.9 42.0 28.0 



NOTE: Blanks indicate no data 



108 



