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8.7.3.15. Mortality

Mortality stop at \({c}_j^{\min}\):

\[R^{\mathrm{C}}_j = r^{{{\text{resp}}}}_j f^{{{\text{remin}}}}(T) ({c}_j - {c}_j^{\min})\]

\[M_j = m^{(1)}_j {f^{\op{mort}}(T)}^{e^{\op{m}}_j} ({c}_j - {c}_j^{\min}) + m^{(2)}_j {f^{\op{mort2}}(T)}^{e^{\op{m2}}_j} ({c}_j - {c}_j^{\min})^2\]

The released matter splits into dissolved and particulate organic pools,

\[\begin{split}M^{\op{DOM}}_j &= (1 - f_j^{\exp\op{m}}) m^{(1)}_j {f^{\op{mort}}(T)}^{e^{\op{m}}_j} ({c}_j - {c}_j^{\min}) \\ &+ (1 - f_j^{\exp\op{m2}}) m^{(2)}_j {f^{\op{mort2}}(T)}^{e^{\op{m2}}_j} ({c}_j - {c}_j^{\min})^2\end{split}\]

\[\begin{split}M^{\op{POM}}_j &= f_j^{\exp\op{m}} m^{(1)}_j {f^{\op{mort}}(T)}^{e^{\op{m}}_j} ({c}_j - {c}_j^{\min}) \\ &+ f_j^{\exp\op{m2}} m^{(2)}_j {f^{\op{mort2}}(T)}^{e^{\op{m2}}_j} ({c}_j - {c}_j^{\min})^2\end{split}\]

8.7.3.15.1. Parameters

Table 8.50 Mortality and respiration parameters

Trait	Param	Symbol	Default	Units	Description
mort	a_mort	\(m^{(1)}_j\)	0.02 / day	s-1	linear mortality rate
mort2	a_mort2	\(m^{(2)}_j\)	0	m3 s / mmol C	quadratic mortality coefficient
Xmin	a_Xmin	\(c^{\min}_j\)	0	mmol C m-3	minimum abundance for mortality, respiration and exudation
tempMort	grp_tempMort	\(e^{\op{m}}_j\)	1		1: mortality is temp. dependent, 0: not
tempMort2	grp_tempMort2	\(e^{\op{m2}}_j\)	1		1: quadr.tic mortality is temperature dependent, 0: not
ExportFracMort	a_ExportFracMort	\(f^{\op{exp}\op{m}}_j\)	0.5		fraction of linear mortality to POM
ExportFracMort2	a_ExportFracMort2	\(f^{\op{exp}\op{m2}}_j\)	0.5		fraction of quadratic mortality to POM