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Seasonal and annual variation in fungal communities associated with epigeic springtails (Collembola spp.) in boreal forests
Univ Tartu, Inst Ecol & Earth Sci, 14A Ravila, EE-50411 Tartu, Estonia..
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Organismal Biology, Systematic Biology. Univ Tartu, Inst Ecol & Earth Sci, 14A Ravila, EE-50411 Tartu, Estonia.
Univ Tartu, Nat Hist Museum, 14A Ravila, EE-50411 Tartu, Estonia..
2018 (English)In: Soil Biology and Biochemistry, ISSN 0038-0717, E-ISSN 1879-3428, Vol. 116, p. 245-252Article in journal (Refereed) Published
Abstract [en]

Soil fauna mediate nutrient cycling through engineering physical properties and altering microbial commtmities in soil. Collembola is one of the most abundant groups of soil fauna, which regulates microbial communities by consumption and dispersal. The spatial structure of associations between Collembola and soil microbes have been described in several studies, but temporal variation of these associations remains unclear. Using high throughput sequencing, we studied the fungal communities on Collembola (Entomobiya nivalis, Orchesella flavescens, Pogonognathellus longicornis) body surface, gut and their immediate habitat (topsoil samples) in four seasons across three years. The soil samples were characterized by fairly uniform relative abundance of saprotrophic and mycorrhizal fungi, whereas collembolans were associated mostly with saprotrophs. The structure of fungal communities from all substrate types exhibited comparable patterns of temporal distance decay of shnilarity. Unlike in soil, fungal richness and composition in Collembola body and gut samples exhibited seasonal and annual variation, with a significant interaction term, indicating low predictability. These results reflect spatial and temporal plasticity of the fungal communities associated with epigeic Collembola, indicating the high adaptability of collembolans to available conditions. We found that the Collembola associations with fungi (including diet) did not vary among the studied epigeic Collembola species. The detected high diversity of fungi associated with Collembola suggests that dispersal by arthropod vectors may represent a powerful alternative to aerial dispersal of fungal propagules.

Place, publisher, year, edition, pages
PERGAMON-ELSEVIER SCIENCE LTD , 2018. Vol. 116, p. 245-252
Keyword [en]
Collembola, High-throughput sequencing, Fungal community, Arthropod-microbial associations, Seasonality, Temporal changes
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:uu:diva-341306DOI: 10.1016/j.soilbio.2017.10.021ISI: 000419417900028OAI: oai:DiVA.org:uu-341306DiVA, id: diva2:1180933
Available from: 2018-02-07 Created: 2018-02-07 Last updated: 2018-02-07Bibliographically approved

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Bahram, Mohammad

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