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Table 4
Spearman's rank significant correlation coefficient (R) for mayfly species and physico-chemical water properties in Plitvice Lakes NP. Sample size (N) = 366, ⁎⁎⁎ p < 0.001, ⁎⁎ p < 0.01, ⁎ p < 0.05.
| Species | Environmental factor | R | t(N−2) | p-Value |
|---|---|---|---|---|
| Alainites muticus | Nitrate ions | −0.14 | −2.74 | ⁎⁎ |
| Conductivity | 0.12 | 2.37 | ⁎ | |
| Alkalinity | 0.10 | 1.99 | ⁎ | |
| Baetis cf. nubecularis | Water velocity | 0.31 | 6.31 | ⁎⁎⁎ |
| Water depth | −0.25 | −4.91 | ⁎⁎⁎ | |
| Ammonium ions | 0.14 | 2.67 | ⁎⁎ | |
| Water temperature | 0.11 | 2.09 | ⁎ | |
| Baetis rhodani | pH | −0.18 | −3.46 | ⁎⁎⁎ |
| Conductivity | 0.30 | 5.99 | ⁎⁎⁎ | |
| Alkalinity | 0.27 | 5.41 | ⁎⁎⁎ | |
| Nitrate ions | 0.15 | 2.94 | ⁎⁎ | |
| Water velocity | 0.13 | 2.51 | ⁎ | |
| Water depth | −0.12 | −2.23 | ⁎ | |
| Centroptilum luteolum | Water velocity | −0.34 | −6.99 | ⁎⁎⁎ |
| Water depth | 0.19 | 3.61 | ⁎⁎⁎ | |
| Oxygen concentration | −0.14 | −2.64 | ⁎⁎ | |
| Caenis horaria | Conductivity | −0.19 | −3.69 | ⁎⁎⁎ |
| Alkalinity | −0.18 | −3.44 | ⁎⁎⁎ | |
| Water temperature | 0.15 | 2.79 | ⁎⁎ | |
| pH | 0.15 | 2.81 | ⁎⁎ | |
| Nitrate ions | −0.11 | −2.02 | ⁎ | |
| Oxygen concentration | −0.12 | −2.34 | ⁎ | |
| Ephemera danica | Water temperature | 0.18 | 3.51 | ⁎⁎⁎ |
| Water velocity | −0.35 | −7.04 | ⁎⁎⁎ | |
| Water depth | 0.23 | 4.52 | ⁎⁎⁎ | |
| pH | 0.23 | 0.52 | ⁎⁎⁎ | |
| Conductivity | −0.24 | −4.73 | ⁎⁎⁎ | |
| Alkalinity | −0.24 | −4.77 | ⁎⁎⁎ | |
| Nitrate ions | −0.14 | −2.65 | ⁎⁎ | |
| Oxygen concentration | −0.12 | −2.39 | ⁎ | |
| Serratella ignita | Water temperature | 0.14 | 2.74 | ⁎⁎ |
| Water velocity | −0.13 | −2.58 | ⁎ | |
| Torleya major | Conductivity | −0.19 | −3.83 | ⁎⁎⁎ |
| Alkalinity | −0.18 | −3.46 | ⁎⁎⁎ | |
| pH | 0.17 | 3.21 | ⁎⁎ | |
| Water temperature | 0.11 | 2.05 | ⁎ | |
| Ecdyonurus submontanus | Water depth | 0.13 | 2.57 | ⁎ |
| Rhithrogena braaschi | pH | −0.26 | −5.06 | ⁎⁎⁎ |
| Conductivity | 0.29 | 5.94 | ⁎⁎⁎ | |
| Alkalinity | 0.29 | 5.72 | ⁎⁎⁎ | |
| Nitrate ions | 0.21 | 4.00 | ⁎⁎⁎ | |
| Habrophlebia lauta | Water velocity | −0.24 | −4.66 | ⁎⁎⁎ |
| Water depth | 0.16 | 3.03 | ⁎⁎ | |
| Conductivity | 0.12 | 2.38 | ⁎ | |
| Paraleptophlebia submarginata | Water velocity | −0.17 | −3.56 | ⁎⁎⁎ |
| Water depth | 0.11 | 2.05 | ⁎ | |
| Siphlonurus croaticus | Water velocity | −0.23 | −4.40 | ⁎⁎⁎ |
| Water depth | 0.13 | 2.51 | ⁎ | |
| Alkalinity | 0.12 | 2.26 | ⁎ | |
| Ammonium ions | −0.12 | −2.27 | ⁎ | |
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