Paul Foth

@paulrfoth.bsky.social

Sparrow, lichen, music fan account Bird guide in the BC Cariboo Occasional scholar of of religious history Exile from the Salish Sea

Can any lichen folks help illuminate me about Nephroma taxonomy? McCune & Geiser (2023) say that N. helveticum is absent in the PNW. They say N. tropicum is expected. But I see records of N. helveticum (2 subspecies) from lichenologists, in databases, publications, etc. What gives? Recent changes?

Great piece explaining why Canadian fires by and large are not the result of forest management issues & for the most part cannot be fought, only mitigated near infrastructure and inhabited areas. Non-Alaskan US views of fire management just do not apply. www.theclimatebrink.com/p/canadas-bo...

Canada's boreal wildfires aren't just bad forest management

Higher fire season temperatures are strongly correlated with increased area burned

theclimatebrink.com

"Lichens are living archives. Changes in their presence, absence or health reflect local climate history, air quality and even cataclysmic events, both natural and human-caused. In their quiet testimony, lichens tell us things we need to hear..." www.seattletimes.com/pacific-nw-m...

They’ve puzzled scientists for more than a century — and they’re almost everywhere in WA

More than 1,000 species of lichen grow in Washington. All of them offer a window into profound biological cooperation.

seattletimes.com

Epilogue I have now found two Arctoparmelia species in the area. A. centrifuga has a solid cortex, no soredia, light lower surface, and I've been finding it in large round patches. A. subcentrifuga is sorediate and basically disintegrates to the touch. The upper cortex is worn and split. 🌿

Arctoparmelia centrifuga (Concentric Ring) lichen, large, pale greenish, rounded layers of lichen thallus on triangular rock near moss Close view of Arctoparmelia subcentrifuga (Abrading Ring) lichen, with pale green dissolving cortex and powdery soredia on my finger.
Paul Foth@paulrfoth.bsky.social · last mo.

And an Arctoparmelia species. My iNat placeholder as A centrifuga for now. I'm hoping to get back to document these better. www.inaturalist.org/observations...