Functions implementing the two respiration temperature-dependence equations (REQ 1–2), activity correction, and conversion of oxygen consumption to energy units. Respiration is modelled as:
$$R = RA \cdot W^{RB} \cdot F(T) \cdot \mathrm{ACT}$$
where \(RA\) and \(RB\) are species-specific intercept and slope coefficients, \(W\) is body mass (g), \(F(T)\) is a temperature function, and \(\mathrm{ACT}\) is an activity multiplier.
REQ 1 — simple Q10 exponential with activity: \(F(T) = e^{RQ \cdot T}\); velocity-based activity from Kitchell et al. (1977).
REQ 2 — Kitchell et al. (1977): \(F(T) = V^{RX} \cdot e^{RX(1-V)}\), where \(V = (RTM - T)/(RTM - RTO)\).
Oxygen consumption is converted to energy using the oxycalorific coefficient (default 13 560 J g\(^{-1}\) O\(_2\); Elliott and Davison 1975).
Value
No return value; this page documents the respiration functions module. See individual function documentation for return values.
References
Kitchell, J.F., Stewart, D.J. and Weininger, D. (1977). Applications of a bioenergetics model to yellow perch and walleye. Journal of the Fisheries Research Board of Canada, 34(10), 1922–1935. doi:10.1139/f77-258
Elliott, J.M. and Davison, W. (1975). Energy equivalents of oxygen consumption in animal energetics. Oecologia, 19(3), 195–201. doi:10.1007/BF00345305
Hanson, P.C., Johnson, T.B., Schindler, D.E. and Kitchell, J.F. (1997). Fish Bioenergetics 3.0. University of Wisconsin Sea Grant Institute, Madison, WI.
Deslauriers, D., Chipps, S.R., Breck, J.E., Rice, J.A. and Madenjian, C.P. (2017). Fish Bioenergetics 4.0: An R-based modeling application. Fisheries, 42(11), 586–596. doi:10.1080/03632415.2017.1377558