VU

Saxifraga osloensis

Declining

Overview

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

Saxifraga osloensis faces severe habitat degradation from urban development and infrastructure expansion in its limited Norwegian range. The species is particularly vulnerable to quarrying activities and road construction that directly destroy its specialized rock crevice habitats. Climate change poses an additional threat through altered precipitation patterns and temperature regimes that affect the delicate moisture balance required for survival in its rocky microhabitats.

Threat summary

Habitat

Saxifraga osloensis inhabits specialized rock crevices and cliff faces in calcareous bedrock environments, typically found in shaded, moist microsites within urban and peri-urban areas of southeastern Norway. The species requires specific geological conditions with limestone or similar alkaline substrates that provide the precise moisture and mineral conditions necessary for its survival.

Other threatened species in SAXIFRAGACEAE

VU

Saxifraga vacillans

Unknown
CR

Artvinian Rockfoil

Saxifraga artvinensis

Declining
EN

Saxifraga presolanensis

Stable
EN

Saxifraga tombeanensis

Declining

Threatened in Norway

VU

Lepiota echinella

Unknown
EN

Lyophyllum deliberatum

Unknown
VU

Large Tree-chernes

Dendrochernes cyrneus

Unknown
VU

Lesser White-fronted Goose

Anser erythropus

Declining

Frequently asked questions

Why is Saxifraga osloensis classified as Vulnerable?
Saxifraga osloensis is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. Saxifraga osloensis faces severe habitat degradation from urban development and infrastructure expansion in its limited Norwegian range. The species is particularly vulnerable to quarrying activities and road construction that directly destroy its specialized rock crevice habitats. Climate change poses an additional threat through altered precipitation patterns and temperature regimes that affect the delicate moisture balance required for survival in its rocky microhabitats.
Where does Saxifraga osloensis live?
Saxifraga osloensis occurs in Norway, and Sweden. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Saxifraga osloensis?
The main threats to Saxifraga osloensis 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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