Research Article

Seasonality of Water Chemistry, Carbonate Production, and Biometric Features of Two Species of Chara in a Shallow Clear Water Lake

Figure 3

The Principal Components Analysis (PCA) of water properties data gathered during the month-to-month study of C. polyacantha and C. rudis in Lake Jasne in the 2010 vegetation season. Total phosphorus (TP) and total nitrogen (TN) concentrations represent all the analysed speciation forms of both nutrients. The empty symbols represent C. rudis and the filled ones represent C. polyacantha. The roman numbers mean the months of study. Dashed grey lines mark the seasons.