• 1Proposed
  • 2Under Assessment
  • 3Preliminary Assessed
  • 4Assessed
  • 5Published

Collema curtisporum Degel.

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Scientific name
Collema curtisporum
Author
Degel.
Common names
 
IUCN Specialist Group
Lichens
Kingdom
Fungi
Phylum
Ascomycota
Class
Lecanoromycetes
Order
Peltigerales
Family
Collemataceae
Assessment status
Pending
Proposed by
Anders Dahlberg
Assessors
André Aptroot, Göran Thor
Contributors
Sergio Perez-Ortega, Gennadii Urbanavichus
Comments etc.
Anders Dahlberg, Christoph Scheidegger, Toby Spribille, Einar Timdal

Assessment Status Notes

Taxonomic notes


Why suggested for a Global Red List Assessment?

A globally rare species on old Populus tremula. The deterioration of its habitat is caused by human activities. Proposed and data compiled by Göran Thor.

Suggested assessment by proposer: VU on the A criterium (A2bc; C1), population decrease has been 30 (15-40) % over 100 years and is expected to be 15 (10-25) % the coming 100 years.


Geographic range

Collema curtisporum has its largest population (probably >90 %) in North Sweden (c. 200 localities). Outside Sweden it is reported from a few localities in Norway (red-listed), Finland (red-listed), Italy and western North America.


Population and Trends

The species has decreased rapidly in Sweden and is red-listed in at least Sweden, Norway and Finland.

Documentation and motivation needed.

Population Trend: Deteriorating


Habitat and Ecology

The species is found on middle aged Populus tremula in semi-open, boreal, mixed forests in humid but open situations as near streams, mires and in north slopes. Very rarely also found on other tree species. Most forests where it occurs are established after forest fires.

Boreal ForestSubarctic ForestTemperate Forest

Threats

Forestry is the major threat. In a long term perspective, the low number of forest fires is a threat as the regeneration of Populus tremula decrease.

Tourism & recreation areas

Conservation Actions

All localities should be protected. The regeneration of Populus tremula trees should be supported on localities for the species.

Site/area protection

Research needed


Use and Trade


Bibliography

The Information System on Italian Lichens. http://dbiodbs.univ.trieste.it/italic/italic03

ArtDatabanken. http://www.artfakta.se/Artfaktablad/Collema_Curtisporum_385.pdf

Degelius, G. 1954. The lichen genus Collema in Europe. Symb. Bot. Ups. 13(2).


Known distribution - countries

Regional Population and Trends

Country Trend Redlisted