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<br />GI <br />g 20 <br />III <br />'tI <br />C <br />:l <br />.a <br />III 15 <br />.~ <br />16 <br />~ 10 <br />'$. <br /> <br />80 <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />A. A II F is h e s <br /> <br />70 <br /> <br />1ii11986 <br />.1987 <br />01988 <br />01989 <br />.1990 <br />1111991 <br /> <br />w <br />U <br />c: <br />CO <br />"'C <br />c: <br />::J <br />..c <br />CO <br />Q) <br />> <br />+=- <br />CO <br />Q) <br />~ <br />eft. 2 0 <br /> <br /> <br />60 <br /> <br />50 <br /> <br />40 <br /> <br />30 <br /> <br />10 <br /> <br />o <br /> <br />RSH <br /> <br />OtNN <br /> <br />NNGF <br /> <br />NATF <br /> <br />FHM <br /> <br />SAH <br /> <br />B. Nativ fishes <br /> <br />C. Non-native aamefishes <br /> <br />3.5 <br /> <br />30 <br /> <br /> <br />.BG/BCR <br />[]LMB <br />OGSF <br />.CCF <br />IIBBH <br /> <br />25 <br /> <br /> <br />.SPD <br />IDCPM <br />DCH <br />.FMS <br />EBHS <br /> <br />3 <br /> <br />" <br />II <br /> <br />2.5 <br /> <br />2 <br /> <br />1.5 <br /> <br />5 <br /> <br />0.5 <br /> <br /> <br />o <br /> <br />o <br /> <br />1986 1987 1988 1989 1990 1991 <br /> <br />1986 1987 1988 1989 1990 1991 <br /> <br />Figure 1. Relative abundance (A,B,C) and catch/effort (D) of select fish species and <br />categories in fall seine samples of Colorado River backwaters from 1986-1991. <br />RSH=red shiner; FHM=fathead minnow; SAH=sand shiner; OtNN=Other nonnative fish <br />species; NNGF=nonnative gamefish species; NA TF=native fish species; SPD=speckled <br />dace; CPM=Colorado pikeminnow; CH=Gila sp.; FMS=t1annelmouth sucker; <br />BHS=bluehead sucker; BG/BCR=bluegill/black crappIe; LMB=largemouth bass; <br />GSF=green sunfish; CCF=channel catfish; BBH=black bullhead. <br /> <br />6 <br />