tosporet skjoldkartlav
CR

tosporet skjoldkartlav

Rhizocarpon bolanderi

Unknown

Photo: (c) Liam O'Brien, some rights reserved (CC BY-NC), uploaded by Liam O'Brien

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Rhizocarpon bolanderi faces severe threats from air pollution, particularly nitrogen deposition and acid rain, which alter the chemistry of its rocky substrates and disrupt its slow-growing lichen physiology. Climate change poses additional risks through altered precipitation patterns and temperature extremes that affect the delicate moisture balance required for this species' survival. Habitat destruction from quarrying, development, and recreational activities further fragments its already limited populations on specialized rock surfaces.

Threat summary

Habitat

This crustose lichen species inhabits exposed siliceous rock surfaces, particularly granite and other acidic rocks in montane and subalpine environments. It typically grows on vertical to slightly overhanging rock faces where it receives adequate moisture from fog and precipitation while avoiding excessive water accumulation.

Other threatened species in Rhizocarpaceae

Rock-loving Map LichenVU

Rock-loving Map Lichen

Rhizocarpon petraeum

Unknown
VU

Smooth Map Lichen

Rhizocarpon hochstetteri

Unknown
gul hattlavssnyltareCR

gul hattlavssnyltare

Epilichen scabrosus

Unknown
Kalk-landkortlavCR

Kalk-landkortlav

Rhizocarpon umbilicatum

Unknown

Frequently asked questions

Why is tosporet skjoldkartlav classified as Critically Endangered?
tosporet skjoldkartlav 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. Rhizocarpon bolanderi faces severe threats from air pollution, particularly nitrogen deposition and acid rain, which alter the chemistry of its rocky substrates and disrupt its slow-growing lichen physiology. Climate change poses additional risks through altered precipitation patterns and temperature extremes that affect the delicate moisture balance required for this species' survival. Habitat destruction from quarrying, development, and recreational activities further fragments its already limited populations on specialized rock surfaces.
Where does tosporet skjoldkartlav live?
tosporet skjoldkartlav 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 tosporet skjoldkartlav?
The main threats to tosporet skjoldkartlav 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.

Get weekly conservation intelligence

One short digest a week of the most striking species and country data we ship, plus breaking conservation news paired with our database where it matters.

Free, no spam. One-click unsubscribe in every email.