blylavsknagg
CR

blylavsknagg

Toninia plumbina

Unknown

Photo: Photo: (c) Juan Carlos Zamora, some rights reserved (CC BY-NC), uploaded by Juan Carlos Zamora

Overview

Toninia plumbina is a small crustose lichen species characterized by its distinctive lead-gray to bluish-gray thallus that forms thin, closely adherent patches on rock surfaces. This cryptogamic species plays a crucial role in primary succession and soil formation processes, contributing to nutrient cycling in harsh environments where few other organisms can establish.

Toninia plumbina is a critically endangered lichen species facing severe population declines due to habitat loss and environmental degradation. Air pollution and climate change are significantly impacting the specialized microhabitats this species requires for survival.

Threat summary

Habitat

Toninia plumbina occurs exclusively on calcareous rock outcrops and limestone cliffs in montane regions, typically at elevations between 800-2000 meters. The species requires specific microclimatic conditions with high humidity, minimal direct sunlight, and stable temperature regimes found in sheltered rock crevices and north-facing cliff faces.

TERRESTRIAL· major

Other threatened species in Ramalinaceae

CR

Ramalina protensa

Unknown
VU

Kornet grenlav

Ramalina polymorpha

Unknown
VU

Bacidia friesiana

Unknown
VU

kristallundlav

Bacidia absistens

Unknown

Frequently asked questions

Why is blylavsknagg classified as Critically Endangered?
blylavsknagg is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Toninia plumbina is a critically endangered lichen species facing severe population declines due to habitat loss and environmental degradation. Air pollution and climate change are significantly impacting the specialized microhabitats this species requires for survival.
Where does blylavsknagg live?
blylavsknagg occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to blylavsknagg?
The main threats to blylavsknagg are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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