MOdel Shopping Tool ( MOST )
"mesozooplankton budget module (PFT)" from PlankTOM5 Equations
Same equation in other models :
Equation Description :
Mesozooplankton (MES) budget module calculating MES concentration as a function of time in mol C m-3. Mesozooplankton in PlankTOM5 is modelled as biomass only (compared to biomass, iron, chlorophyll and silicium content for phytoplankton functional types). The production of mesozooplankton in the model is defined by the grazing (on phytoplankton and microzooplankton), the basal respiration rate and the loss terms mortality and egestion.
b = 1.059 (Temperature [°C] dependence of grazing (Hirst03))
c = 1.071 (Temperature [degC] dependence of mortality (Hirst 2002)
d = 1.122 (Temperature [°C] dependence of basal (and outine) respiration Ikeda85,01)
e MES = 0.26 (model growth efficiency = GGE (Straile 1997)+basal resp/grazing)
f s MES = 0.31 (unassimilated food (fecal pellets (Besiktepe 2002) + sloppy feeding)
G 0 zoo = 0.31 d-1 (maximum grazing rate (= maximum growth rate, Hirst 2003 / GGE))
K 1/2 zoo = 0.29 micromol (half saturation constant of grazing, Hirst 2003)
m MES = 0.058 d-1 (mortality, Hirst 2002)
mortpower = 1 (linear mortality: mortpower=1, square mortality: mortpower=2)
mortality = 0.053 d-1 (copepods; Hirst 2002)
p dia MES = 3.14 preference for silicifiers (Buitenhuis et al 2006)
p nan MES = 0.63 preference for nanophytoplankton (Buitenhuis et al 2006)
p mic MES = 3.14 preference for microzooplankton
p soc MES = 0.63 preference for small POC
Q10 grazing = 1.77 (copepods; Hirst 2003; Straile 1997; Buskey 1998; )
Q10 mortality = 1.99 (copepods; Hirst 2002)
Q10 POC degradation = 0.18 d-1 (Buitenhuis et al 2006)
Q10 routine respiration = 3.16 (Ikeda 1985; 2001)
r MES = 0.008 d-1 (basal respiration (= routine respiration (=0.012, Ikeda85,01) * respiration at no swimming/respiration at routine swimming (=0.67, Torres et al. 1982, Torres & Childress 1983, Buskey 1998))
routine respiration = 0.012 d-1 (Ikeda 1985; 2001)
sigma MES = 0.76 (partitioning between food respiration and dissolved egestion (Steinberg 2000, Kremer 1977, Copping 1980, Small 1983))
References:
Besiktepe, S., and H. G. Dam 2002, Mar. Ecol. Prog. Ser., 229, 151-164
Buitenhuis et al 2006. GBC VOL. 20, GB2003, doi:10.1029/2005GB002511,
Buskey, E. J. 1998, Mar. Biol., 130(3), 425-431
Copping, A. E., and C. J. Lorenzen (1980), Limnol.Oceanogr., 25(5), 873-882
Hirst, A. G., and T. Kiørboe 2002, Mar. Ecol. Prog. Ser., 230, 195-209
Hirst, A. G., and A. J. Bunker 2003, Limnol. Oceanogr.,
48(5), 1988-2010
Ikeda, T. 1985, Mar. Biol., 85(1), 1-11
Ikeda, T., Y. Kanno, K. Ozaki, and A. Shinada 2001, Mar. Biol., 139(3), 587-596
Small, L. F., S. W. Fowler, S. A. Moore, and J. Larosa (1983), Deep-Sea Res., Part A, 30(12), 1199-1220
Steinberg, D. K., C. A. Carlson, et al., 2000, Deep-Sea Res., Part I, 47(1), 137-158
Straile, D. 1997, Limnol. Oceanogr., 42, 1375-1385
Torres, J. J., and J. J. Childress 1983, Mar. Biol., 74(1), 79-86
Torres, J. J., J. J. Childress, and L. B. Quetin 1982, Deep-Sea Res., Part A, 29(5), 631-639
