Fire is not 'nature' magic
What sort of ranger is he? With no formal training in magic, we can assume he has some innate abilities related to nature. Frankly, lighting a fire is not the sort of ability the nature spirits would hand out. Surviving a blizzard without harm (Life support) might be more likely:
Talking with animals: mind link with limitations
Super-Tracking abilities: Retrocognition with heavy lims
'In Tune' with Nature: Danger Sense, only in woods
Various Enhanced Senses, perhaps borrowed from animals
'I'm a Shrubbery', invisibility with fringe, only in woods
'Watch out for that Tree, Part I', Flying or gliding with lims (not limbs)
'Watch out for that Tree, Part II', Change environment to cause a dex check for limbs, roots, vines, etc.
The Hidden Paths: teleportation, only to seem to disappear without a trace, needs a tree to duck behind
'Like the Back of My Hand': Bump of direction, only in woods
'Close quarters fighting': Bonuses to DCV & OCV in woods
'Bloody Vines Everywhere': Entangle, AoE