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<br />01160 <br /> <br />Supertag Estimates of the LCR Humpback Chub Population Proportional Decline Since initial Abundance by <br />Age <br /> <br /> 120"'" <br />-s 100% <br />~ ~ 80% <br />0_ <br />-eo 60% <br />8.~ 40% <br />e! <br />0.] 2D% <br /> 0% <br /> <br />'~:;:;::--....~ <br /> <br />........... <br /> <br />>< <br />--...-: <br /> <br />,-. "- <br /> <br />"- <br />-- <br /> <br />-&-2. <br />___ 3+ <br />____4+ <br /> <br />, <br />...m~~ <br /> <br />., <br /> <br />1991 <br /> <br />1992 <br /> <br />1993 <br /> <br />1994 <br /> <br />1995 <br /> <br />1996 <br /> <br />1997 <br /> <br />1998 <br /> <br />1999 <br /> <br />2000 <br /> <br />2001 <br /> <br />2002 <br /> <br />Year <br /> <br />Annual ASMR Estimates of the LeR Humpback Chub Population Proportional Decline Since 1989 bV Age <br /> <br />.. <br /><0 <br />~ <br />- . <br />~~ <br />0._ <br />t::- <br />OW <br /><> <br />o <br />0: <br /> <br />100% <br />80% <br />80% <br />40% <br />2D% <br />D% <br /> <br />........ <br /> <br />~- <br /> <br />~-~~-""""-~:_-'-_+---1 <br /> <br />-&-2. <br />___ 3+ <br />____ 4+ <br /> <br />3}; <br /> <br />1989 <br /> <br />1990 <br /> <br />1991 <br /> <br />1992 1993 1994 <br /> <br />1995 <br /> <br />1996 1997 <br /> <br />1998 <br /> <br />1999 2000 2001 <br /> <br />2002 <br /> <br />Vear <br /> <br />Monthly ASMR Estimates of the LeR Humpback Chub Population Proportional Decline Since 1989 by Age <br /> <br /> 100% <br />.. <br />.. 80% <br />.. <br />:S 60% <br />o . ., <br />C E <br />0_ <br />-eo 40% '. <br />8.W 20% '. <br />0 <br />0: <br /> D% <br /> 1989 <br /> <br />~ <br /> <br />'. '. <br />~~ <br /> <br />........2. <br />___ 3+ <br />____ 4+ <br /> <br /> <br />. ~~.~--"..---_.-"-: <br /> <br />1990 1991 <br /> <br />1992 <br /> <br />1993 1994 <br /> <br />1995 1996 <br />Year <br /> <br />1997 <br /> <br />1998 <br /> <br />1999 2000 2001 <br /> <br />2002 <br /> <br />Estimates of the LeR Humpback. Chub Population Age 4+ Proportional Decline for Each 01 Three Models <br /> <br />.. ~ 120% . , ~--, . . --- ~ <. <br />! irS _100% ~SUPEATAG <br />oiHlBO% --.../ "- -.-ANNUAL. ASMA <br /> "",,*,""MONTHLY.ASMR <br />.~;.:fi 8. 60% ...- -,....." .' ., <br />IHl~ 40% <br />e;..... 20%- ." <br />Q,..n 0% - .,... <br />1969 1990 1991 1992 1993 1994 1995 1998 1997 1998 1999 2000 2001 2002 <br /> Year <br /> <br />Figure 1 Estimates of proportional decline (ages 2+, 3+, and 4+) from three open population <br />models. <br /> <br />Draft - April 21, 2003 <br /> <br />7 <br />