Ammonium

The map below shows status and trends at four stations in the Lower Patuxent River for ammonium (NH4+) and phosphorus (PO4-3) fluxes (observed data).

Ammonium (NH4+)

The current status (average of 1996-1998 data) of ammonium fluxes at the four SONE stations in the Patuxent River is illustrated above.  Ideally, we want to see low NH4+ fluxes. With low NH4+, very little nutrients are available for phytoplankton to use to increase their numbers and biomass. Among the four SONE stations in the Patuxent River, two had NH4+ fluxes in the fair range, and two were in the poor range. It should be noted that high river flow years, such as 1996, have a strong influence on ammonium fluxes (fluxes increase). Understanding this, the opposite could be true as well; low river flow years, such as 1999, could decrease ammonium fluxes. Ammonium is part of the nitrification process that helps restore estuarine systems.

Bay Monitoring Info:
Water Quality Data
"Eyes on the Bay"
River Input
Water & Habitat
Nutrient Limitation
Ecosystem Processes
Benthos
Phytoplankton
Zooplankton
Bay Grasses
Tidal Fish
Research Vessel Kerhin
Chesapeake Bay Home
Bays & Streams Home
DNR Home

Ammonium

map
legend "Good” areas are not necessarily of the quality needed by living resources.
*Status is relative to other similar areas in the Bay.
**Trends are significant at p < 0.01.

For more information, please contact Renee Karrh at (410) 260-8628.

Search Maryland DNR

Search www.dnr.state.md.us


Restoration and Protection | Bay Grasses | Harmful Algae | Bay Monitoring
Bay Life Guide | Bay Education

Return to the Maryland DNR Home Page.
Your opinion counts! Take a
survey!