Table 3.
Pearson’s product-moment correlation coefficient between physicochemical parameters and ecotoxicological values (toxic value TV10), together with the total quantity of applied deicers (VOLdeicers) and daily precipitation before sampling (Pdaily)
| Site | Feature | pH | EC | TOC | TV10 (FN) | TV10 (FA) | TV10 (BIO) |
|---|---|---|---|---|---|---|---|
| Deicing Place | pH | 1 | |||||
| EC | – | 1 | |||||
| TOC | 0.83* | 0.94** | 1 | ||||
| TV10 (FN) | – | 0.85* | 0.95*** | 1 | |||
| TV10 (FA) | – | 0.85* | 0.95*** | 0.99*** | 1 | ||
| TV10 (BIO) | – | – | – | – | – | 1 | |
| VOLdeicers | – | – | – | – | – | – | |
| Pdaily | – | – | – | – | – | – | |
| K2 | pH | 1 | |||||
| EC | – | 1 | |||||
| TOC | – | 0.87** | 1 | ||||
| TV10 (FN) | – | 0.98*** | 0.84* | 1 | |||
| TV10 (FA) | – | – | 0.90** | 0.79* | 1 | ||
| TV10 (BIO) | −0.98* | – | – | – | 0.91* | 1 | |
| VOLdeicers | – | – | – | – | – | – | |
| Pdaily | – | – | – | – | – | – | |
| K3 | pH | 1 | |||||
| EC | – | 1 | |||||
| TOC | – | 0.96*** | 1 | ||||
| TV10 (FN) | – | 0.77* | 0.82* | 1 | |||
| TV10 (FA) | – | 0.83* | 0.87** | 0.99*** | 1 | ||
| TV10 (BIO) | – | 0.96** | – | – | – | 1 | |
| VOLdeicers | 0.90* | – | – | – | – | – | |
| Pdaily | – | – | – | – | – | – | |
| Lake | pH | 1 | |||||
| EC | – | 1 | |||||
| TOC | – | – | 1 | ||||
| TV10 (FN) | – | – | – | 1 | |||
| TV10 (FA) | −0.85* | – | – | 0.81* | 1 | ||
| TV10 (BIO) | – | – | – | – | – | 1 | |
| VOLdeicers | 0.77* | – | – | – | – | – | |
| Pdaily | 0.88** | −0.86** | – | – | – | – | |
| Stream | EC | – | 1 | ||||
| TOC | – | −0.88** | 1 | ||||
| TV10 (FN) | – | – | 0.95*** | 1 | |||
| TV10 (FA) | – | – | – | – | 1 | ||
| TV10 (BIO) | 0.99** | – | – | – | – | 1 | |
| VOLdeicers | – | – | – | – | – | – | |
| Pdaily | – | −0.87** | 0.96*** | 0.90** | – | – |
*−p ≤ 0.05, ***p ≤ 0.01, ***p ≤ 0.001, - not significant. EC electrical conductivity, TOC total organic carbon, TV10 toxic value (=1/EC10), FN frond number, FA frond area, BIO bioluminescence