Plant phenology has several applications, from questions related to the production of agricultural species to the monitoring of climate change. On applications in conservation biology, I suggest the paper by Morellato et al. (2016): Linking plant phenology to conservation biology.
Phenology can be used as a tool to assess the effects of fire.
Article Fire does not change sprouting nor flowering, but affects fr...
It is also possible to use phenology as an assumption in ecophysiological studies. See an example in the link:
Article Diaspore dispersal season influences root growth and seed tr...