Biogeochemical Cycles - Coastal Lagoons: Ecosystem Processes and Modeling for Sustainable Use and Development - page 118

TABLE 4.15
Sediment (NO 2 − +

NO 3 − ) Release Rate (mg N m − 2 day − 1 )

Average Location Reference As Cited in Explanation

6.048 Ochlockonee Bay,

Florida

Seitzinger, 1987b Seitzinger 18 Average measurements of

all cores throughout the
year

3.36 Narragansett Bay Seitzinger et al.,

1984; Nixon
et al., 1976

Seitzinger 18 Annual average of

mid-bay data

32.928 North Sea,

Belgian coast

Billen, 1978 Seitzinger 18 Annual average

−14.112 Patuxent Estuary Henriksen and

Kemp, 1988

Seitzinger 18

71.232 Tejo Estuary,

upper bay,
Portugal

Seitzinger
unpublished data

Seitzinger 18 Muddy sediments

0 St. Leonard's

Creek, Patuxent
River Estuary

Boynton et al.,
1990

Lung 80 May 1985

9.98 St. Leonard's

Creek, Patuxent
River Estuary

Boynton et al.,
1990

Lung 80 June 1985

4.93 St. Leonard's

Creek, Patuxent
River Estuary

Boynton et al.,
1990

Lung 80 August 1985

1.65 St. Leonard's

Creek, Patuxent
River Estuary

Boynton et al.,
1990

Lung 80 October 1985

3.13 Buena Vista,

Patuxent River
Estuary

Boynton et al.,
1990

Lung 80 May 1985

0 Buena Vista,

Patuxent River
Estuary

Boynton et al.,
1990

Lung 80 June 1985

2.37 Buena Vista,

Patuxent River
Estuary

Boynton et al.,
1990

Lung 80 October 1985

There is an adsorption-desorption interaction between dissolved inorganic
phosphorus and suspended particulate matter in the water column. The subsequent
settling of the suspended solids, together with the sorbed inorganic phosphorus,
can act as a significant phosphorus loss mechanism from the water column and as
a source of phosphorus to the sediment. Because the rates of adsorption-desorption
are on the order of minutes vs. reaction rates on the order of days for the biological