Table 6.
Relative contribution of ferns of group 1 (termophilous ferns) in stepwise multiple regression analyses negatively correlated with seasonality and/or positively with warmth index. The only variable which was not significantly correlated or out of the model was the arc‐sin of relative humidity
| Genus | Regression summary | Kira Warmth Index (log) | Difference between max. and min. monthly mean temperatures (log °C) | Elevation (log m) | Distance to closest site (log km) |
|---|---|---|---|---|---|
| Arthropteris (Oleandraceae) | R 2 = 0.490, F = 4.04, P < 0.009, SE = 0.005 | n.m. | B = −0.875, P = 0.0001, pc = 0.683 | n.s. | n.s. |
| Pneumatopteris (Thelypteridaceae) | R 2 = 0.532, F = 8.72, P < 0.0004, SE = 0.005 | n.m. | B = −0.522, P = 0.0022, pc = −0.582 | B = 0.402, P = 0.009, pc = 0.506 | n.s. |
| Lastreopsis (Dryopteridaceae) | R 2 = 0.37, F = 7.06, P < 0.003, SE = 0.008 | n.s. | B = −0.508, P = 0.009, pc = −0.501 | n.m. | n.m. |
| Triplophyllum (Dryopteridaceae) | R 2 = 0.385 F = 7.53, P < 0.002, SE = 0.017 | n.s. | B = −0.474, P = 0.013, pc = −0.48 | n.s. | n.m. |
| Blotiella (Dennstaedtiaceae) | R 2 = 0.314, F = 5.5, P < 0.01, SE = 0.008 | n.m. | B = −0.437, P = 0.016, pc = −0.466 | B = 0.362, P = 0.042, pc = 0.4 | n.s. |
| Selaginella (Selaginellaceae) | R 2 = 0.373, F = 3.27, P < 0.029, SE = 0.036 | n.m. | B = −0.687, P = 0.008, pc = −0.523 | n.s. | n.s. |
| Lepisorus (Polypodiaceae) | R 2 = 0.490, F = 4.04, P < 0.009, SE = 0.005 | B = 0.448, P = 0.035, pc = 0.44 | B = −0.67, P = 0.021, pc = −0.44 | B = 0.473, P = 0.01, pc = 0.522 | n.s. |
| Pteris (Pteridaceae) | R 2 = 0.465, F = 10.44, P < 0.0005, SE = 0.029 | B = 0.661, P = 0.0002, pc = 0.665 | n.m. | B = −0.313, P = 0.049, pc = −0.388 | n.s. |
| Christella (Thelypteridaceae) | R 2 = 0.357, F = 3.05, P < 0.038, SE = 0.023 | B = 0.541, P = 0.01, pc = 0.511 | n.m. | n.m. | n.m. |
| Xiphopteris (Grammitidaceae) | R 2 = 0.269, F = 6.25, P < 0.001, SE = 0.021 | B = 0.411, P = 0.036, pc = 0.429 | n.m. | n.m. | n.m. |
| Trichomanes (Hymenophyllaceae) | R 2 = 0.531, F = 4.42, P < 0.02, SE = 0.017 | B = 0.409, P = 0.027, pc = 0.431 | n.s. | n.s. | n.s. |
| Bolbitis (Lomariopsidaceae) | R 2 = 0.486, F = 5.2, P < 0.004, SE = 0.015 | B = 0.429, P = 0.021, pc = 0.467 | n.s. | n.s. | n.s. |
| Lomariopsis (Lomariopsidaceae) | R 2 = 0.625, F = 9.17, P < 0.0001, SE = 0.01 | B = 0.432, P = 0.016, pc = 0.483 | n.s. | n.s. | n.m. |
| Tectaria (Dryopteridaceae) | R 2 = 0.492, F = 4.45, P < 0.001, SE = 0.006 | B = 0.554, P = 0.0014, pc = 0.602 | n.m. | n.m. | n.s. |
| Diplazium (Dryopteridaceae) | R 2 = 0.441, F = 6.05, P < 0.003, SE = 0.009 | B = 0.652, P = 0.0004, pc = 0.645 | n.m. | n.m. | B = 0.319, P = 0.071, pc = 0.366 |
| Total | R 2 = 0.865, F = 49.2, P < 0.0001, SE = 0.06 | B = 0.77, P = 0.0001, pc = 0.708 | B = −0.482, P < 0.0001, pc = 0.763 | n.s. | n.s. |
| Total plus associated genera (see text) | R 2 = 0.841, F = 63.9, P < 0.0001, SE = 0.07 | B = 0.590, P = 0.0001, pc = 0.80 | B = −0.50, P < 0.0001, pc = 0.756 | n.s. | n.s. |
n.m., not in model; n.s., not significant.