EN

Simira walteri

Declining

Overview

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

Simira walteri faces severe pressure from ongoing deforestation and habitat fragmentation across its limited range in the Atlantic Forest of southeastern Brazil. Agricultural expansion, particularly cattle ranching and sugarcane cultivation, continues to reduce and isolate remaining forest patches where this endemic tree species occurs. Urban development and infrastructure projects further compound habitat loss, while the species' apparent rarity and restricted distribution make it particularly vulnerable to local extinctions from small-scale disturbances.

Threat summary

Habitat

Simira walteri is endemic to the Atlantic Forest (Mata Atlântica) of southeastern Brazil, occurring in remnant patches of tropical moist forest. This species typically grows in the understory and canopy of primary and secondary forest formations within this highly threatened biodiversity hotspot.

Other threatened species in RUBIACEAE

EN

Arachnothryx tacanensis

Declining
CR

Arachnothryx tenorioi

Unknown
VU

Aidia abeidii

Unknown
EN

Arachnothryx tuxtlensis

Declining

Frequently asked questions

Why is Simira walteri classified as Endangered?
Simira walteri is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. Simira walteri faces severe pressure from ongoing deforestation and habitat fragmentation across its limited range in the Atlantic Forest of southeastern Brazil. Agricultural expansion, particularly cattle ranching and sugarcane cultivation, continues to reduce and isolate remaining forest patches where this endemic tree species occurs. Urban development and infrastructure projects further compound habitat loss, while the species' apparent rarity and restricted distribution make it particularly vulnerable to local extinctions from small-scale disturbances.
Where does Simira walteri live?
Simira walteri 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 Simira walteri?
The main threats to Simira walteri 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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