Biogeochemical Cycles - Coastal Lagoons: Ecosystem Processes and Modeling for Sustainable Use and Development - page 115

C 4 = phytoplankton carbon concentration [mg C l −1 ]

k OND = organic nitrogen decomposition rate constant at 20 ° C [day −1 ]

θ OND = organic nitrogen decomposition temperature coefficient [none]

Ammonium nitrogen and organic nitrogen transformation rate constants in the sed-
iment of coastal waters and related temperature correction factors are given in
Tables 4.11- 4.13. Although EUTRO5 does not include nitrification in sediment, the
values given in Table 4.11 can be useful for other models.

TABLE 4.11
Sediment Nitrification Rate (mg N m − 2 day − 1 )

Min. Max. Avg. Location Reference As Cited in

2 9 North Sea sediments Goldhaber, 1977 Herbert 8

20 Kingoodie Bay, U.K. Macfarlene and

Herbert, 1984

Herbert 8

38 Lim Fjord sediments, Denmark Jorgensen and

Revsbech, 1989

Herbert 8

112 Norsminde Fjord, Denmark Binnerup et al., 1992 Herbert 8

84 Ochlockonee Bay, Florida Seitzinger, 1987 Herbert 8

23 Narragansett Bay, U.S.A. Seitzinger

et al., 1984

Herbert 8

14 23 Chesapeake Bay, U.S.A. Henriksen and

Kemp, 1988

Herbert 8

26 Patuxent River, U.S.A. Jenkins and

Kemp, 1984

Jenkins and
Kemp 96

23 27 Kysing Fjord, Denmark Hansen

et al., 1981

Herbert 8

38 42 Odawa Bay, Japan Koike and

Hattori, 1978

Herbert 8

TABLE 4.12
Rate Coefficient for Organic Nitrogen Decomposition in Sediments
to NH 4 + (day − 1 )

Min. Max. Avg. Location Reference As Cited in Explanation

0.001 0.02 Texas bays

and estuaries

Brandes,
1976

Bowie et al. 93

0.00013 Sacca di

Scardovri, Italy

Viel
et al., 1991

Viel et al. 97 Anoxic conditions

in the sediment

0.02 Patuxent River

Estuary, U.S.A.

Lung, 1992 Lung 80 Given as org N

decomposition
rate, value used
in modeling