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).
No return value; this page documents the respiration functions module. See individual function documentation for return values.
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. tools:::Rd_expr_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. tools:::Rd_expr_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. tools:::Rd_expr_doi("10.1080/03632415.2017.1377558")