Table 2 Nutrient fluxes Nitrite+nitrate, ammonium and orthophosphate fluxes (μmol m-2 day-1) calculated from results obtained in February, June and October 1997 with a benthic chamber and in June 1999 with a benthic cylinder settled in the P. oceanica meadow of the Revellata Bay at 10 m depth (mean ± standard deviation; number of observation into brackets).
From: Posidonia oceanica meadow: a low nutrient high chlorophyll (LNHC) system?
Method | NO2-+NO3- | NH4+ | PO43- | |
|---|---|---|---|---|
February 1997 | chamber | -495 ± 573 (2) | -5700 ± 763 (2) | -1395 ± 1018 (2) |
June 1997 | chamber | 98 ± 81 (8) | -528 ± 547 (8) | -59 ± 243 (10) |
October 1997 | chamber | -452 ± 423 (2) | 133 ± 242 (8) | -862 ± 995 (8) |
June 1999 | cylinder | -77 ± 98 (8) | -60 ± 98 (8) | -2 ± 6 (8) |