3
$\begingroup$

The oxygen is calculated in mg per kg per something, so what does $h^{-1}$ stand for? hours maybe?

The formula given below is an estimation of oxygen consumption for Atlantic salmon

\begin{equation} V_{O_{2}} (mg \cdot kg^{-1} \cdot h^{-1}) = 61.6(\pm6.6) BW^{-0.33(\pm0.11)} \cdot 1.03(\pm0.10)^{T} \cdot 1.79(\pm(0.10))^{U} \label{eq:salmonoxygenconsumption} \end{equation}

Here is a link containing the scientific article describing the formula - ScienceDirect

$\endgroup$
2
$\begingroup$

Yeah, it's hours.

Further down in the paper, you can read,

The mass exponent was estimated to be −0.33 (b in Eq. (4)) for the specific metabolic rate \begin{equation} V_{O_{2}} (mg\space {O_{2}} \cdot kg^{-1} \cdot h^{-1}) \end{equation}

Rate by very definition implies an extent of time; since mg refers to oxygen and kg refers to water, the only variable left is h, which evidently refers to hours. Hours also jives well with the experimental design.


Source:

  • Grøttum JA, Sigholt T. 1998. A model for oxygen consumption of atlantic salmon (salmo salar) based on measurements of individual fish in a tunnel respirometer. Aquacultural Engineering 17(4): 241-251.
$\endgroup$
  • $\begingroup$ Thank you very much for your answer @rotaredom, very helpful! $\endgroup$ – ms99 Apr 22 at 18:43

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.