Acornley, R.M. (1999) Water temperatures within spawning beds in two chalk streams and implications for salmonid egg development. Hydrological Process, pp. 439-446
| Species | Development state | Trait | Primary Data | Secondary Data |
| Salmo trutta fario | Egg | Temperature for incubation | The lower temperature limit at which brown trout hatched in laboratory studies was less than 1°C and the upper limit was in the range 10 to 16°C. Hatching success was optimal at about 5°C. In this study, although intra-gravel water temperatures rarely rose above 10°C during the egg incubation period, mean intra-gravel temperatures were above that considered optimal for successful hatching. | 1.0 °C |
| Salmo trutta fario | Spawning conditions | Spawning season | Brown trout were observed spawning at the study sites from mid October to early January | ['January', 'October'] |
| Salmo trutta fario | Spawning conditions | Spawning water type | Large chalk stream | No category |
| Salmo trutta fario | Spawning conditions | Spawning substrate | Gravel-beds | Lithophils |