Which forms of N and P do we work with in streams?

Nitrogen can be organic or inorganic. Can be dissolved or total. Most we talk about nitrate and amonium for inorganic dissolved nitrogen. Dissolveed organic can be part of enzymes or dna. Particulate organic nitrogen (PON) can be part of phytoplankton PO43- is the inorganic phosphor that we look at. DOP - dissolved organic P POP - particulate organic P There is also particulate inorganic phosphorus.