Table 1 State and parameter values of the models and functions.

Z

seagrass shoots shoots (m⁻²)

—

S

pore water sulfide concentration (µmol L⁻¹)

—

OM

organic matter (%)

—

L

Loripes density (ind m⁻²)

—

Z _max

maximum seagrass density (carrying capacity) (shoots m⁻²)

8000

1

r

relative growth rate seagrass (day⁻¹)

0.35

1,2,3

m _s

maximum seagrass mortality rate by sulfide (day⁻¹)

0.5

1,4^a

m _n

natural seagrass mortality rate (day⁻¹)

0.007

2

C _om

conversion factor relating % OM to sulfide (µmol L⁻¹%⁻¹ day⁻¹)

0.01/ C_z

1 ^b

C _s

conversion factor relating loss of sulfide by uptake (ind⁻¹ day⁻¹ m²)

0.0027

1 ^b

e _s

loss of S due to chemical oxidation and loss water layer (day⁻¹)

0.29

1

C _z

conversion factor for sh/m² to OM% (%shoots⁻¹ m²)

2.017e⁻⁶

1

e _m

loss of OM due decomposition and export (day⁻¹)

0.0009

1

S _min

minimum sulfide concentration where toxicity occurs (µmol L⁻¹)

200

5

S _max

sulfide concentration where the toxicity effect becomes maximal (µmol L⁻¹)

1000

5

r _L

relative growth rate Loripes (ind day⁻¹ m⁻²)

26

6 ^a

L _max

maximum Loripes density (carrying capacity) (ind m^×2)

4,900

7

m _L

natural Loripes mortality rate (day^×1)

0.002

6 ^a