Encroachment of shrubs into subalpine grasslands in the Pyrenees modifies the structure of soil fungal communities and soil properties
| Autor: | Josep Peñuelas, Oriol Grau, József Geml, Annamari Markkola, Saija H K Ahonen, Karita Saravesi, Josep M. Ninot |
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| Přispěvatelé: | Organismo Autónomo Parques Nacionales (España), Generalitat de Catalunya, Ministerio de Economía y Competitividad (España), European Research Council |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Secondary succession Land abandonment 030106 microbiology ved/biology.organism_classification_rank.species Ecological succession Biology Applied Microbiology and Biotechnology Microbiology Shrub Grassland Shrubland 03 medical and health sciences Soil Fand abandonment Ecosystem Plant Physiological Phenomena Soil Microbiology Compositional turnover geography geography.geographical_feature_category Shrub expansion Ecology ved/biology Fungi Plants Europe 030104 developmental biology Functional group Terrestrial ecosystem Species richness Mycobiome |
| Popis: | The encroachment of shrubs into grasslands is common in terrestrial ecosystems dominated by grass. Land abandonment and favourable climatic trends in recent decades have favoured the expansion of shrubs into subalpine grasslands in many mountainous regions across Europe. The advance of the succession from grassland to shrubland is expected to have a major impact on ecosystem functioning. We used DNA metabarcoding to assess whether the structure of soil fungal communities varied along the succession from subalpine grassland to shrubland in the Pyrenees, and investigated whether shrub encroachment was associated with changes in soil properties. The expansion of shrubs increased the soil C:N ratio and/or reduced the N, P or K contents. Plant-driven changes in soil properties were strongly associated with the compositional turnover of fungi, including arbuscular mycorrhizal, ectomycorrhizal, ericoid, root endophytic, saprotrophic, lichenised and pathogenic fungi. Total richness and the richness of most functional groups were correlated with soil P, N and the C:N or N:P ratios. We show that the interplay between abiotic factors (changes in soil properties) and biotic factors (occurrence and identity of shrubs) played a key role in the structure and uniqueness of soil fungal communities along the succession. This research was supported by the Organismo Autónomo Parques Nacionales [786–2012, ARBALMONT], the Spanish Government [CGL2016–79835-P], the Catalan government [SGR2017–1005] and the ERC Synergy grant [SyG-2013–610028, IMBALANCE-P]. |
| Databáze: | OpenAIRE |
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