For 10 points, name these high-temperature events which only humans are known to be able to manipulate.
These events mediate serotiny in some Eucalyptus species and in lodgepole pines. The oldest known one of these events occurred in the Silurian, when the first tracheophytes appeared. Plants in environments prone to these events often can resprout adventitiously. After them, soils develop a hydrophobic surface and lose nitrogen to volatilization. The health of chaparral is probably maintained by the regular occurrence of these events. These events may be prevented by inducing controlled forms of these events or establishing "breaks" that prevent them from propagating. For 10 points, name these high-temperature events which only humans are known to be able to manipulate.
These events mediate serotiny in some Eucalyptus species and in lodgepole pines.
fires [accept anything that refers to things being on fire like wildfire, forest fire, and brush fire]