Diversity and ecology of aphyllophoroid fungi on driftwood logs on the shores of the Baltic Sea
AuthorKunttu, Panu; Pasanen, Hannes; Rämä, Teppo; Kulju, Matti; Kunttu, Sanna-Mari; Kotiranta, Heikki
Driftwood is woody debris that is floating on the sea or brought onto the shore by the sea. It can have a natural origin but often it originates from human activities. Driftwood has a significant ecological role as a microhabitat for a large range of species. Dead-wood-associated aphyllophoroid fungi on driftwood have been studied rather little globally, and there are hardly any studies conducted in the Baltic Sea. We studied the diversity and ecology of polypores and corticioids growing on driftwood (man-made logs) on the shores of the Finnish SW-archipelago. In total, 394 driftwood logs were surveyed for visible fungal sporocarps. We found altogether 145 species (1023 records) of which approximately three-fourths were corticioids. The driftwood logs hosted several rare and noteworthy species, such as one new corticioid species, 16 nationally rare species, and 40 new species to the region. The five most common species accounted for one-third of all observations, whereas 82 species (11% of all records) were recorded only once or twice. Larger logs hosted, on average, more species compared to small-diameter logs. The mean number of species increased significantly when comparing the logs in the first and the middle stages of decay. Our results show that driftwood logs can host a wide variety of species and they provide an important substrate for many dead-wood-associated fungi, including species of conservation concern and species with restricted ecological requirements. Driftwood hosted several species that have not been previously found in the archipelago forests, and the logs clearly enrich the fungal diversity in the area. Our results encourage to increase dead wood for fungi in coastal forests where it has been dramatically decreased as a result of strong hemeroby.
This is the peer reviewed version of the following article: Kunttu P, Pasanen, Rämä T, Kulju M, Kunttu, Kotiranta H. Diversity and ecology of aphyllophoroid fungi on driftwood logs on the shores of the Baltic Sea. Nordic Journal of Botany. 2020;38(4), which has been published in final form at https://doi.org/10.1111/njb.02735. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
CitationKunttu P, Pasanen, Rämä T, Kulju M, Kunttu, Kotiranta H. Diversity and ecology of aphyllophoroid fungi on driftwood logs on the shores of the Baltic Sea. Nordic Journal of Botany. 2020;38(4)
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