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<br />. <br /> <br />APPENDIX B <br /> <br />CALCULATION OF THE HEP MODELS <br /> <br />. <br /> <br />HE? EVALUATION SPECIES: Beaver <br /> <br />VARIABLE DESCRIPTION, <br /> <br />t <br /> <br />Vl = Percent tree canopy closure O-'OOm from water <br />V2 = Percent trees in 2.5 to 15.2 em dbh size class 0-100m from water <br />V3 ::: Percent shrub crown cover O-'OOm from waler <br />V4 = Average height of shrub canopy 0-100m from water <br />VS = Species composition of woody vegetation ()..IQOm trom water <br />VB = Percent tree canopy closure 1 DO-200m from water <br />V7 = Percent trees in 2.5 to 15.2 em dbh size class 1 DO-200m from water <br />VB = Percent shrub crown cover l00-200m from water <br />V9 = Average height of shrub canopy l00-200m from water <br />VI0 = Species composition of woody vegetation tOO-200m from water <br />VII = Percent stream gradient <br />V12 = Average water fluctuation on annual basis <br /> <br />I <br /> <br />MODEL: FOOd = [(VI X V2)'t2 x VS2j1f2 + [(V3 x V4}'/2 x V5Z]1I2 <br />Water = Lowest value between VII and V12 <br />HSt =:: Lowest va/ue between food and water tife requisites <br /> <br />SUITABIUTY CURVES, <br /> <br />1.0 <br /> <br />v; 0.5 <br /> <br /> <br />1.0 <br /> <br />1.0 <br /> <br /> V3 <br />- <br /> I <br /> <br />Y2 <br /> <br />0.5 <br />'" <br /> <br />0.5 <br />'" <br /> <br />o <br />, <br />o <br /> <br />, <br />50 <br /> <br />o <br /> <br />, <br />o <br /> <br />, <br />50 <br /> <br />, <br />lOa <br /> <br />o <br /> <br />100 <br /> <br />~ <br />~ <br /> <br />- <br />-. <br /> <br />A <br /> <br />, <br /> <br />c <br /> <br />B-1 <br />