kalkhaarschubje
Agonimia globulifera
Photo: Photo: Curtis Randall Björk via Wikimedia Commons CC BY-SA 4.0
Overview
Agonimia globulifera, commonly known as kalkhaarschubje, is a small crustose lichen species characterized by its pale, chalky appearance and distinctive globular reproductive structures. This inconspicuous lichen forms thin, whitish-gray crusts on calcareous substrates and plays an important ecological role in primary succession and nutrient cycling in limestone environments.
Agonimia globulifera, a rare crustose lichen, faces severe threats from habitat loss and degradation of its specialized substrate requirements. Air pollution and climate change further compromise the specific environmental conditions this species needs to survive, while its extremely limited distribution makes it highly vulnerable to local disturbances.
Habitat
Kalkhaarschubje grows exclusively on exposed limestone rocks, mortar of old walls, and concrete structures in areas with low air pollution. It typically colonizes vertical or slightly overhanging calcareous surfaces that receive moderate light but remain protected from direct rainfall.
Other threatened species in Verrucariaceae
Frequently asked questions
Why is kalkhaarschubje classified as Critically Endangered?
Where does kalkhaarschubje live?
What are the main threats to kalkhaarschubje?
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