- Proposed
- Under Assessment
- Preliminary Assessed
- Assessed
- VUPublished
Cortinarius quadrisporus Nouhra & Kuhar
- Scientific name
- Cortinarius quadrisporus
- Author
- Nouhra & Kuhar
- Common names
- IUCN Specialist Group
Mushroom, Bracket and Puffball- Kingdom
- Fungi
- Phylum
- Basidiomycota
- Class
- Agaricomycetes
- Order
- Agaricales
- Family
- Cortinariaceae
- Assessment status
- Published
- Assessment date
- 2023-06-14
- IUCN Red List Category
- VU
- IUCN Red List Criteria
- C2a(ii)
- Assessors
- Ranieri, C. & Kuhar, F.
- Reviewers
- Drechsler-Santos, E. & Martins da Cunha, K.
Assessment Notes
Justification
Cortinarius quadrisporus is an ectomycorrhizal species that has been found in association with Nothofagus dombeyi, N. obliqua, N. pumilio and N. alpina. This species is associated with an increasingly threatened Nothofagus forest system. Deforestation, forest fires (intentional and accidental due to drought and climate change), invasive species like Pseudotsuga menziesii and cattle farming are growing threats. C. quadrisporus is considered a rare species. No records have been made since the species' publication (Nouhra et al. 2021). It is expected, conservatively, that there are no more than 15-30 mature individuals per site, that would be found with a greater sampling effort. Then, considering that the species is associated with increasingly threatened Nothofagus forests (CONAF et al. 1999, Miranda et al. 2017, CONAF 2020), it is estimated that the current population size is no bigger than 10,000 mature individuals. It is inferred that due to climate change and other threats, such as deforestation, fires increase, alien species and cattle, the area suitable for the specific forest which harbours this species will decrease conservatively by 15% in the next 30 years (year 2050) and, as a consequence, the population size of fungal species is in continuing decline. This species is assessed as Vulnerable under criterion C2a(ii).Geographic range
So far this species is only known from three sites in Argentina (Nahuel Huapi National Park) and in three sites in Chile (Nahuelbuta and Villarrica National Park, and San Pablo de Tregua Reserve) (2016 to 2019). The potential area that this species occupies is the Nothophagaceae forests and it could also occur in central Patagonia too.Population and Trends
Cortinarius quadrisporus is considered a rare species. It has small-sized globose secotioid pileus, white to slightly olivaceous or yellowish brown basidiomes; occurring under Nothofagus spp. in northern Patagonia. No records have been made since the species' publication (Nouhra et al. 2021). It is expected that there are no more than 15-30 mature individuals per site, that would be found with a greater sampling effort. Then, considering that the species is associated with increasingly threatened Nothofagus forests (CONAF et al. 1999, Miranda et al. 2017, CONAF 2020), it is estimated that the current population size is no bigger than 10,000 mature individuals. The three generation time period of this species is 50 years (Dahlberg and Mueller 2011), and it is suspected that due to climate change and other threats, such as deforestation, an increase in fires, alien species and cattle, the area suitable for the specific forest which harbours this species will decrease conservatively 15% in the next 30 years (year 2050), and, as a consequence, the fungal population size is in continuing decline.
Population Trend: decreasing
