Table 1.
Mosses: collecting sites, ‘95 % saturation’ PPFD (calculated from fitted RETR curves), and pigment parameters
| Species |
Locality and date of collection |
Chlorophyll (mg g−1) |
Chl a : b |
Chl : Car |
PPFD at 95 % sat. µmol m−2 s−1 |
NPQ at 400 µmol m−2 s−1 |
1 – qP at 400 µmol m−2 s−1 |
|---|---|---|---|---|---|---|---|
| Andreaea rothii | Crockern Tor, Dartmoor, 20 Feb. (SX616757) | 1·05 ± 0·04 | 2·25 ± 0·04 | 3·09 ± 0·04 | 711 ± 245** | 7·80 ± 0·62 | 0·34 ± 0·06 |
| Anomodon viticulosus | Chudleigh, Devon, 5 Feb. (SX865787) | 2·48 ± 0·14 | 2·97 ± 0·02 | 4·59 ± 0·04 | 487 ± 12 | 7·30 ± 0·74† | 0·54 ± 0·02† |
| Aulacomnium palustre | Hatchet Pond, New Forest, Jan. (SU362062) | 0·54 ± 0·04 | – | 2·67 ± 0·10 | 1207 ± 162 | 4·23 ± 0·00 | – |
| Aulacomnium palustre | Bog below Haytor, 21 Aug. (SX757765) | 0·79 ± 0·06 | 2·18 ± 0·19 | 3·98 ± 0·44 | 817 ± 157* | 5·38 ± 0·78 | 0·29 ± 0·04 |
| Campylium stellatum | Stony Moors, New Forest, 9 Sep. (SZ214996) | 1·76 ± 0·11 | 2·58 ± 0·16 | 5·36 ± 0·15 | 638 ± 29* | 4·09 ± 0·57 | 0·36 ± 0·02 |
| Ctenidium molluscum | Miller's Dale, Derbyshire 12 Sep. (SK135733) | 1·43 ± 0·10 | 2·27 ± 0·01 | 4·98 ± 0·16 | 589 ± 161** | 7·55 ± 1·28 | 0·25 ± 0·10 |
| Dicranum majus | Stoke Woods, Exeter, Jan. (SX925961) | 2·51 ± 0·22 | 2·35 ± 0·08 | 5·74 ± 0·25 | 255 ± 5 | 3·71 ± 0·04 | – |
| Dicranum scoparium | Stoke Woods, Exeter, Jan. (SX925961) | 2·22 ± 0·29 | 3·18 ± 0·33 | 5·68 ± 0·36 | 295 ± 5 | 2·78 ± 0·02 | – |
| Encalypta streptocarpa | Chee Dale, Derbyshire 12 Sep. (SK123734) | 2·90 ± 0·21 | 2·01 ± 0·02 | 6·02 ± 0·04 | 480 ± 83 | 4·95 ± 0·76 | 0·41 ± 0·02 |
| Eurhynchium crassinervium | Black Head, Torquay, 11 Aug. (SX942643) | 3·89 ± 0·12 | 1·86 ± 0·23 | 7·63 ± 01·21 | 295 ± 11 | 4·13 ± 0·43 | 0·55 ± 0·01 |
| Fissidens dubius | Chee Dale, Derbyshire 12 Sep. (SK123734) | 4·04 ± 0·31 | 1·67 ± 0·16 | 9·08 ± 1·78 | 219 ± 61* | 6·03 ± 1·76 | 0·57 ± 0·15 |
| Grimmia pulvinata | Clyst St Mary, Devon, Jan. (SX971911) | 2·01 ± 0·26 | 2·88 ± 0·04 | 4·03 ± 0·11 | 525 ± 19 | – | – |
| Grimmia pulvinata | Clyst St Mary, Devon, Nov. (SX971911) | – | – | – | 904 ± 44** | 4·24 ± 1·14 | 0·29 ± 0·08 |
| Homalothecium sericeum | Chudleigh, Devon, 3 Jan. (SX865787) | 2·45 ± 0·15 | 2·96 ± 0·04 | 4·83 ± 0·04 | 546 ± 15 | – | – |
| Hookeria lucens | Stoke Woods, Exeter, Jan. (SX920959) | 7·90 ± 1·20 | 2·45 ± 0·03 | 5·84 ± 0·17 | 236 ± 5 | 2·89 ± 0·02 | – |
| Leucobryum glaucum | Stoke Woods, Exeter, Jan. (SX927962) | 1·95 ± 0·12 | 2·66 ± 0·10 | 4·43 ± 0·09 | 298 ± 36 | 9·24 ± 0·08 | – |
| Orthotrichum anomalum | Chudleigh, Devon, 3 Jan. (SX863787) | 3·07 ± 0·15 | 2·99 ± 0·06 | 3·80 ± 0·10 | 507 ± 21 | 3·20 ± 0·07 | – |
| Philonotis calcarea | Craig-y-Cilau, Powys, 19 Apr. (SO185165) | 1·07 ± 0·07 | 2·33 ± 0·09 | 4·57 ± 0·15 | 764 ± 185 | 3·98 ± 0·65 | 0·30 ± 0·01 |
| Philonotis fontana | Abergavenny, Gwent, 19 Apr. (SO269167) | 1·04 ± 0·11 | 2·23 ± 0·06 | 3·89 ± 0·25 | 688 ± 183 | 2·93 ± 0·66 | 0·37 ± 0·05 |
| Plagiomnium undulatum | Stoke Woods, Exeter, Jan. (SX920959) | 4·66 ± 0·37 | 1·72 ± 0·10 | 8·06 ± 1·03 | 251 ± 6 | – | – |
| Plagiomnium undulatum | Charles Wood, Fingle Bridge, Aug. (SX745894) | 3·93 ± 0·05 | 1·94 ± 0·10 | 7·49 ± 0·44 | 154 ± 25 | 2·49 ± 0·38 | 0·78 ± 0·01 |
| Plagiothecium undulatum | Charles Wood, Fingle Bridge, Aug. (SX745894) | 3·25 ± 0·81 | 1·79 ± 0·48 | 12·49 ± 4·88 | 110 ± 25 | 4·95 ± 1·22 | 0·81 ± 0·03 |
| Pleurochaete squarrosa | Chudleigh, Devon, 29 Nov. (SX863787) | 1·14 ± 0·02 | 2·78 ± 0·12 | 4·53 ± 0·04 | 691 ± 137* | 2·64 ± 0·54 | 0·39 ± 0·02 |
| Pogonatum urnigerum | White Wood, Holne, Dartmoor, Oct. (SX694722) | 2·45 ± 0·27 | 2·67 ± 0·10 | 4·05 ± 0·15 | 957 ± 96 | 1·89 ± 0·17 | 0·24 ± 0·03 |
| Polytrichum formosum | Stoke Woods, Exeter, 4 Nov. (SX925961) | 3·53 ± 0·08 | 2·14 ± 0·03 | 6·87 ± 0·07 | 518 ± 15 | 1·57 ± 0·23 | 0·53 ± 0·03 |
| Polytrichum juniperinum | Haytor Rocks, 21 Aug. (SX757771) | 2·24 ± 0·15 | 2·85 ± 0·10 | 5·07 ± 0·11 | 1621 ± 306 | 1·29 ± 0·12 | 0·21 ± 0·03 |
| Polytrichum piliferum | Haytor, 21 Aug. (SX770775) | 1·91 ± 0·42 | 2·10 ± 0·08 | 5·07 ± 0·24 | 2549 ± 847 | 1·06 ± 0·42 | 0·12 ± 0·03 |
| Racomitrium aquaticum | Haytor Rocks, 21 Aug. (SX757771) | 0·72 ± 0·04 | 2·80 ± 0·36 | 3·93 ± 0·51 | 617 ± 49** | 3·69 ± 0·72 | 0·30 ± 0·02 |
| Racomitrium lanuginosum | O Brook, Dartmoor, Feb. (SX664719) | 0·51 ± 0·07 | 2·20 ± 0·11 | 2·32 ± 0·20 | 858 ± 11** | 12·14 ± 4·16 | 0·30 ± 0·05 |
| Racomitrium lanuginosum | O Brook, Dartmoor, Aug. (SX664719) | 0·97 ± 0·11 | 1·85 ± 0·14 | 4·74 ± 0·36 | 607 ± 104** | 4·97 ± 0·84 | 0·35 ± 0·07 |
| Rhytidiadelphus loreus | White Wood, Holne, 8 Feb. (SX692721) | 1·63 ± 0·24 | 2·42 ± 0·06 | 5·18 ± 0·23 | 217 ± 5 | 4·11 ± 0·89† | 0·66 ± 0·03† |
| Schistidium apocarpum | Exeter University campus, 9 July (SX916940) | 1·22 ± 0·30 | 2·21 ± 0·27 | 4·13 ± 0·65 | 591 ± 92** | 5·30 ± 1·98 | 0·29 ± 0·01 |
| Scorpidium scorpioides | Hatchet Pond, New Forest, Jan. (SU362062) | 1·27 ± 0·08 | – | 3·23 ± 0·13 | 962 ± 71 | – | – |
| Scorpidium scorpioides | Stony Moors, New Forest, 9 Sep. (SZ214996) | 2·57 ± 0·26 | 2·27 ± 0·11 | 6·13 ± 0·27 | 705 ± 2 | 5·75 ± 2·20 | 0·26 ± 0·04 |
| Sphagnum cuspidatum | Bicton Common, 2 Nov. (SY041857) | 0·75 ± 0·20 | 2·31 ± 0·17 | 4·73 ± 1·54 | 495 ± 110** | 9·13 ± 3·16 | 0·36 ± 0·04 |
| Sphagnum denticulatum | Bog below Haytor, Aug. (SX757765) | 0·88 ± 0·13 | 3·03 ± 0·07 | 4·86 ± 0·38 | 543 ± 65** | 5·34 ± 1·06 | 0·39 ± 0·06 |
| Sphagnum papillosum | Hatchet Pond, New Forest, Jan. (SU362062) | 0·27 ± 0·01 | – | 4·18 ± 0·22 | 325 ± 35* | – | – |
| Sphagnum rubellum | Bog below Haytor, Aug. (SX757765) | 0·76 ± 0·04 | 1·04 ± 0·05 | 7·31 ± 0·59 | 530 ± 58 | 9·20 ± 1·43 | 0·30 ± 0·09 |
| Sphagnum rubellum | Bicton Common, 2 Nov. (SY041857) | 0·76 ± 0·11 | 2·10 ± 0·02 | 4·40 ± 0·11 | 576 ± 55** | 4·54 ± 0·77 | 0·46 ± 0·03 |
| Splachnum ampullaceum | Hatchet Pond, New Forest, Jan. (SU362062) | 1·37 ± 0·06 | 3·29 ± 0·32 | 3·38 ± 0·13 | 782 ± 30 | – | – |
| Syntrichia intermedia | Chudleigh, Devon, 3 Jan. (SX863787) | 6·26 ± 0·85 | 3·45 ± 0·11 | 4·28 ± 0·20 | 772 ± 21 | – | – |
| Syntrichia intermedia | Chudleigh, Devon, Nov. (SX863787) | – | – | – | 830 ± 110** | 4·96 ± 2·02 | 0·18 ± 0·06 |
| Syntrichia ruralis | Felsőtárkány, Hungary, 27 Oct. | 3·06 ± 0·23 | 2·47 ± 0·04 | 3·58 ± 0·13 | 935 ± 166** | 4·36 ± 1·48 | 0·22 ± 0·03 |
| Thamnobryum alopecurum | Stoke Woods, Exeter, Jan. (SX920959) | 1·64 ± 0·07 | 3·21 ± 0·17 | 5·15 ± 0·21 | 264 ± 2 | – | – |
| Thuidium tamariscinum | Charles Wood, Fingle Bridge, Aug. (SX745894) | 2·33 ± 0·29 | 2·14 ± 0·17 | 6·53 ± 0·58 | 197 ± 62 | 4·34 ± 1·33 | 0·67 ± 0·05 |
| Tortella tortuosa | Craig-y-Cilau, Brecon, 19 Apr. (SO188162) | 0·78 ± 0·10 | 2·46 ± 0·06 | 3·06 ± 0·19 | 658 ± 116* | 6·39 ± 1·14 | 0·37 ± 0·05 |
| Tortella tortuosa | W of Malham Tarn, Yorks. 14 June (SD876668) | 1·52 ± 0·33 | 1·98 ± 0·26 | 5·41 ± 0·79 | 671 ± 37* | 7·1 ± 0·85 | 0·27 ± 0·07 |
Species names follow Blockeel and Long (1998).
Asterisks indicate cases where the curves show some (*) or strongly marked (**) non-saturating electron flow at high irradiances.
Ordnance Survey of Great Britain national grid references are given in parentheses.
†
Data from another batch of material, March 1999.