PCWA-L 480.pdf - PCWA Middle Fork American River Project ...

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Section 1, Chapter 2, Page 6: In Equation 1 for respiration, the activity mUltiplier calculations can be'
clarlfied by making a change to the equation set and making a change to the explanation that fallows. Within '
) equation set one, you can assume that swimming speed is constant, or you cljen assume it's a function of mass
or mass and temperature. If swimming speed is oonstant, then simply use that speed (cm· s·1) to represent the
VEL parameter; otherwise, simply use either the secone{ or third form of the VEL equati9n. Currently Equation
1 reads: , ' ,
where:
VEL = R..Kl· W.RJ:4 , when T > RTL, or,
VEL = ACT· W.RJ:4 . e(MC'1'l"), when T 5. RTL.
Change this equation set to r"ad as follows (the only change Is theJirst line after "where:"):
l'T'\ - (RQ'X)'
f 'L/ - e '
ACTMTY = e(RTDVl1L)
where:
VEL ",swimming speed, when swimminsr speed is constant, or
VEL = RKI' W.RJ:4 , when T > RTL. or
VEL", ACT' W.RK4 'e(MC'1'1"), whenT 5. RTL.
Paragraphs four and five provide an explanation of the application of swimming speed to the ACTIVITY part of
the respiration equation. Paragraph four currently reads:
In Fish Bioenergetics 3.0, if swimming speed is a constant then RTM, RTL, RK4 and BACT are set to 0, RK1
and ACT are set to 1, and RTO Is set to the desired velocity (cm· s'1).
Change this paragraph to read asfollows:
'In Fish Bio"nerg"tics 3.0, if swimming spe"d is a constant then RTM, RTL"RK4 and BACT are set to 0, RK1
and ACT are set to 1, VEL equais swimming speed (em· s·l), and RTO equais the coefficient of swimming
speed (s . cm'1).
2-6
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