kornfiltlav
Parmeliella testacea
Overview
Parmeliella testacea is a foliose lichen species characterized by its brownish to olive-green thallus with distinctive lobed margins and a somewhat leathery texture. This cyanolichen forms symbiotic relationships with cyanobacteria, enabling it to fix atmospheric nitrogen and contribute to nutrient cycling in its ecosystem while providing habitat microstructures for small invertebrates.
Parmeliella testacea faces severe decline primarily due to air pollution and habitat degradation affecting the specific microenvironments required for lichen survival. The species is particularly vulnerable to nitrogen deposition and sulfur dioxide emissions which alter bark chemistry and disrupt the delicate symbiotic relationship between fungal and algal components.
Habitat
This lichen typically grows on the bark of deciduous trees in humid, old-growth forests and well-established woodlands with stable microclimatic conditions. It shows preference for trees with rough bark in areas with consistent moisture levels and minimal air pollution.
Other threatened species in Pannariaceae
Frequently asked questions
Why is kornfiltlav classified as Endangered?
Where does kornfiltlav live?
What are the main threats to kornfiltlav?
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