Abstract
The rate of bacterial nitrate reduction measured directly in sediments from a hypertrophic marine ecosystem (6.0 ± 1.5 mmol m-2 d-1) was similar to the value calculated from a whole pond nutrient budget (7.7 ± 0.3 mmol m-2 d-1) during a phytoplankton crash period. Organic matter breakdown in the sediments represented the dominant source of ammonia-N to the system (16.09 mmol m-2 d-1 compared to 2.97 mmol m-2 d-1 directly from fish excretion and 0.28 mmol m-2 d-1 in the inflow), but most, if not all, of this ammonia-N did not reach the water column. It was intercepted by the benthic flora and used to support high levels of benthic productivity (246 mmol O m-2 d-1; 29.72 mmol N m-2 d-1). -from Author
Original language | English |
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Pages (from-to) | 163-172 |
Number of pages | 10 |
Journal | Marine Ecology - Progress Series |
Volume | 78 |
Issue number | 2 |
DOIs | |
State | Published - 1991 |
Externally published | Yes |
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics
- Aquatic Science
- Ecology