TABLE 1.
Occurrence of bryophyte species in nests of blue tits and great tits built in 1997.
| Great tit | Blue tit | ||||||
|---|---|---|---|---|---|---|---|
| Growth form | Freq. | Mean | Range | Freq. | Mean | Range | |
| Brachythecium spp. | P | 44 | 4 | 0–18 | 54 | 24 | 0–85 |
| Cirriphyllum piliferum | P | 12 | 6 | 0–15 | 17 | 20 | 0–60 |
| Climacium dendroides | P | 3 | 1 | 0–1 | – | – | – |
| Dicranum spp. | A | 24 | 2 | 0–11 | 43 | 5 | 0–36 |
| Hylocomium umbratum | P | 9 | 9 | 0–20 | 3 | 20 | 0–20 |
| Hylocomium splendens | P | 47 | 10 | 0–45 | 37 | 26 | 0–81 |
| Hypnum spp. | P | 3 | 1 | 0–1 | 6 | 2 | 0–2 |
| Leucodon sciuroides | P | – | – | – | 3 | 55 | 0–55 |
| Plagiomnium spp. | P | – | – | – | 9 | 1 | 0–1 |
| Plagiothecium spp. | P | 6 | 3 | 0–5 | 20 | 1 | 0–2 |
| Pleurozium schreberi | P | 82 | 24 | 0–80 | 66 | 28 | 0–83 |
| Polytrichum spp. | A | 15 | 2 | 0–4 | 3 | 1 | 0–1 |
| Ptilium crista‐castrensis | P | 15 | 17 | 0–80 | 17 | 21 | 0–87 |
| Rhytidiadelphus loreus | P | 6 | 26 | 0–50 | 6 | 28 | 0–55 |
| Rhytidiadelphus squarrosus | P | 76 | 45 | 0–89 | 57 | 32 | 0–85 |
| Sanionia uncinata | P | 41 | 24 | 0–94 | 40 | 24 | 0–94 |
| Sphagnum spp. | S | 3 | 1 | 0–1 | – | – | – |
Note: Growth form—A, Acrocarpous, P, Pleurocarpous; S, Spagnum; Freq.—percentage of nests where the bryophyte species occurred; n = 34 for the great tit and n = 35 for the blue tit; Mean—arithmetic mean of the abundance of each bryophyte species, calculated from the nests in which the species was present; Range—range of values.