Phytoplankton limitation in Patagonian and Pampean shallow lakes: effect of phosphorus and light

In order to evaluate patterns of phytoplankton community structure and primary production limitation, we analyzed the phytoplankton communities (chlorophyll a, biovolume, species richness, and primary production) of a set of 20 shallow lakes encompassing a wide range of phosphorus and light levels. The degree of limitation or co-limitation by phosphorus and/or light was estimated using a combined index. We found a direct relationship between...