Phosphorus (P) is conventionally thought to limit production in freshwaters and nitrogen (N)
that in the sea. Before much human activity, however, co-limitation by N and P was probably …

Whether net primary productivity in an aquatic ecosystem is limited by nitrogen (N), limited
by phosphorus (P), or co-limited by N & P is determined by the relative supply of N and P to …

The effect of total nitrogen (TN) and phosphorus (TP) loading on trophic structure and water
clarity was studied during summer in 24 field enclosures fixed in, and kept open to, the …

Limnological and marine geochemical opinion favors phosphorus limitation of organic
production in aquatic environments, while marine biological opinion favors nitrogen …

Planktonic nitrogen fixation in lakes is strongly related to lake trophic status, with moderate
and high rates usually occurring only in eutrophic lakes. Among eutrophic lakes, nitrogen …

Control of lacustrine phytoplankton biomass by phosphorus is one of the oldest and most
stable paradigms in modern limnology. Even so, evidence from bioassays conducted by …

Total nitrogen (TN) and total phosphorus (TP) measurements and contemporaneous
measurements of chlorophyll a (Chl a) and phytoplankton nutrient deficiency have been …

Thirty small upland lakes in Cumbria, Wales, Scotland and Northern Ireland were visited
three times between April and August 2000. On each occasion water chemistry was …

Cyanobacterial nitrogen fixation is an important biochemical mechanism that can confer
significant competitive advantage to planktonic N-fixing cyanobacteria during N limitation …

Limnological theory posits that phosphorus (P) limits primary production in freshwater lakes,
in part because fixation of atmospheric nitrogen (N2) can compensate for limitations in …