Table 3.
Categorization of species as having either obligate or facultative pyrogenic dormancy release based on results from this study. Data are response to summer and fire treatments for each species. Gmax is the maximum germination reached across all durations of the treatment specified.
| Functional group |
Response to summer gap temperatures |
Response to fire temperatures |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| Seed trait/attribute measured‡: |
1i |
1ii(b) |
1ii(b) |
2i |
2i |
2ii |
2ii |
3i |
|
| Species | Pyrogenic dormancy release class | Initial mean dormancy (%) | Gmax after current summer heat (%) | Germination increase above Gmax after projected summer heat (%) | Temperature required for G20% | Temperature required for Gmax | % mortality after 10 min at 100°C | % mortality after 1 min at 120°C | % dormant seeds remaining post-Gmax |
| (1) Acacia rminalis | Obligate | 100.00 ± 0.00 | 0 | 0 | 80 | 100 | 8.9 | 8.9 | 13.3 |
| (2) Acacia licifolia | Obligate | 97.77 ± 2.23 | 6.8 | 1.3 | 80 | 100 | 7.7 | 0 | 31.7 |
| (3) Acacia suaveolens | Obligate | 91.33 ± 8.67 | 7.0 | 15.7 | 100 | 100 | 0 | 0 | 45.0 |
| (4) Acacia linifolia | Obligate | 93.50 ± 3.62 | 9.5 | 0.6 | 100 | 100 | 0 | 8.1 | 23.5 |
| (5) Dodonaea triquetra | Obligate | 100.00 ± 0.00 | 14.0 | 15.1 | 100 | 100 | 0 | 0 | 7.0 |
| (6) Pomaderris discolor | Obligate | 98.15 ± 1.85 | 14.8 | 0 | 80 | 100 | 0 | 1.6 | 5.7 |
| (7) Dillwynia retorta† | Facultative | 97.33 ± 2.77 | 31.4 | 48.8 | 60 | 60 | 23.3 | 86.7 | 2 |
| (8) Gompholobium grandiflorum† | Facultative | 81.5 ± 4.03 | 35.8 | 30.7 | 40 | 80 | 36.7 | 100 | 0 |
| (9) Bossiaea rhombifolia† | Facultative | 90.00 ± 2.89 | 37.9* | 31.4* | 60 | 80 | 53.3 | 100 | 7.1 |
| (10) Gompholobium latifolium | Facultative | 95.00 ± 5.00 | 38.8 | 32.5 | 60 | 80 | 0 | 15.5 | 0 |
| (11) Dillwynia floribunda | Facultative | 98.27 ± 1.73 | 38.9 | 7.4 | 60 | 60 | 7.0 | 18.6 | 0 |
| (12) Bossiaea heterophylla | Facultative | 93.33 ± 3.84 | 51.9 | 6.7 | 40 | 60 | 6.7 | 80.0 | 0 |
| (13) Bossiaea obcordata† | Facultative | 83.33 ± 6.01 | 58.8* | 41.7* | 80 | 80 | 6.8 | 100 | 7 |
| (14) Pultenaea stipularis | Facultative | 96.3 ± 1.85 | 64.6 | 9.0 | 40 | 60 | 19.9 | 18.3 | 3.3 |