Abstract
We characterized fungal communities in dry and moist tundra and investigated the effect of long-term experimental summer warming on three aspects of functional groups of arctic fungi: richness, community composition and species abundance. Warming had profound effects on community composition, abundance, and, to a lesser extent, on richness of fungal functional groups. In addition, our data show that even within functional groups, the direction and extent of response to warming tend to be species-specific and we recommend that studies on fungal communities and their roles in nutrient cycling take into account species-level responses.
Highlights
The arctic tundra is considered a maritime biome, as approximately 80% of nonalpine tundra is located within 100 km of a coastline [1]
We identified 3501 operational taxonomic units (OTUs) based on the UNITE fungal database, discarding OTUs with less than 70% similarity to any fungal sequence
Tundra type had the strongest effect on lichens, where all diversity measures were significantly higher in the dry tundra
Summary
We characterized fungal communities in dry and moist tundra and investigated the effect of long-term experimental summer warming on three aspects of functional groups of arctic fungi: richness, community composition and species abundance. Warming had profound effects on community composition, abundance, and, to a lesser extent, on richness of fungal functional groups. Our data show that even within functional groups, the direction and extent of response to warming tend to be species-specific and we recommend that studies on fungal communities and their roles in nutrient cycling take into account species-level responses
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