Dr. Bondar talks about making this image:
Location of Pukaskwa National Park, Ontario, Canada.
This Pink Granite is in a Lakes and Rivers Biome but has a semi-desert ecosystem of glacier-stripped granite headlands fronting a vast boreal forest.
Pukaskwa’s commonly exposed rock is three billion-year-old Precambrian granite. The heat and strength of sunlight on glacier-scraped granite create semi-desert ecosystems. On their Lake Superior shore, these pink granites are exposed to wide ranges of winter temperatures, low precipitation, and drying winds. In summer, they receive radiation from the sun’s extreme heat, continued low precipitation, and more drying winds to continue their desert-like system.
Constant ice, rain, and water contain mild acids that work away at the granite creating tiny pitted habitats and widening fractures in the granite for pioneering lichen, mosses, and seeds that adapt to drought conditions and can find nutrients and shelter in those spaces.
As these botanical settlers find niches, millennia of survivalist genes strengthen their probing root tips to burrow, to find other fissures and cracks to explore, deepening and widening their mid-granite real estate… to continue their communities of Boreal green.