A diatom-total phosphorus transfer function for freshwater lakes in southeastern Finland, including cross-validation with independent test lakes
Year: 2024
Type: article
Abstract: A diatom total phosphorus (TP) training set and weighted averaging (WA) calibration model for lakes in eastern and southeastern Finland are presented. The data set comprises 78 lakes, with autumnal TP-range of 3–125 ug l–1, pH-range of 5.9–7.7, and lake area of 0.13–283 km2. The correlation between the observed and WA-reconstructed (jackknifed) log TP values in the training set is 0.86 (R2 = 0.73), and root mean squared error of prediction (RMSEp) 0.193 ug TP l–1. The transfer function was cross-validated using an independent test set of 30 lakes. The correlation between the observed and predicted log TP values for the 30 lakes is 0.89 (R2 = 0.79), and RMSEp 0.161 ug TP l–1. These performance statistics (R2, RMSEp), based on the independent cross-validation with the test set of lakes, are within the range of values based on jackknifing estimates, suggesting that diatoms provide reliable estimates of lakewater TP concentration in Finnish lakes.
Source: Työväentutkimus Vuosikirja
DOI: 10.60910/e699-2e18
Author: Miettinen, J. O.
Language: English
Subfield: Environmental Chemistry
Field: Environmental Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2521967447