Belowground impacts of alpine woody encroachment are determined by plant traits, local climate, and soil conditions

© 2020 John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 26(2020), 12 vom: 25. Dez., Seite 7112-7127
1. Verfasser: Collins, Courtney G (VerfasserIn)
Weitere Verfasser: Spasojevic, Marko J, Alados, Concepción L, Aronson, Emma L, Benavides, Juan C, Cannone, Nicoletta, Caviezel, Chatrina, Grau, Oriol, Guo, Hui, Kudo, Gaku, Kuhn, Nikolas J, Müllerová, Jana, Phillips, Michala L, Pombubpa, Nuttapon, Reverchon, Frédérique, Shulman, Hannah B, Stajich, Jason E, Stokes, Alexia, Weber, Sören E, Diez, Jeffrey M
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2020
Zugriff auf das übergeordnete Werk:Global change biology
Schlagworte:Journal Article alpine global change leaf traits plant-soil interactions soil microbes woody encroachment Soil Nitrogen N762921K75
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520 |a Global climate and land use change are causing woody plant encroachment in arctic, alpine, and arid/semi-arid ecosystems around the world, yet our understanding of the belowground impacts of this phenomenon is limited. We conducted a globally distributed field study of 13 alpine sites across four continents undergoing woody plant encroachment and sampled soils from both woody encroached and nearby herbaceous plant community types. We found that woody plant encroachment influenced soil microbial richness and community composition across sites based on multiple factors including woody plant traits, site level climate, and abiotic soil conditions. In particular, root symbiont type was a key determinant of belowground effects, as Nitrogen-fixing woody plants had higher soil fungal richness, while Ecto/Ericoid mycorrhizal species had higher soil bacterial richness and symbiont types had distinct soil microbial community composition. Woody plant leaf traits indirectly influenced soil microbes through their impact on soil abiotic conditions, primarily soil pH and C:N ratios. Finally, site-level climate affected the overall magnitude and direction of woody plant influence, as soil fungal and bacterial richness were either higher or lower in woody encroached versus herbaceous soils depending on mean annual temperature and precipitation. All together, these results document global impacts of woody plant encroachment on soil microbial communities, but highlight that multiple biotic and abiotic pathways must be considered to scale up globally from site- and species-level patterns. Considering both the aboveground and belowground effects of woody encroachment will be critical to predict future changes in alpine ecosystem structure and function and subsequent feedbacks to the global climate system 
650 4 |a Journal Article 
650 4 |a alpine 
650 4 |a global change 
650 4 |a leaf traits 
650 4 |a plant-soil interactions 
650 4 |a soil microbes 
650 4 |a woody encroachment 
650 7 |a Soil  |2 NLM 
650 7 |a Nitrogen  |2 NLM 
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700 1 |a Spasojevic, Marko J  |e verfasserin  |4 aut 
700 1 |a Alados, Concepción L  |e verfasserin  |4 aut 
700 1 |a Aronson, Emma L  |e verfasserin  |4 aut 
700 1 |a Benavides, Juan C  |e verfasserin  |4 aut 
700 1 |a Cannone, Nicoletta  |e verfasserin  |4 aut 
700 1 |a Caviezel, Chatrina  |e verfasserin  |4 aut 
700 1 |a Grau, Oriol  |e verfasserin  |4 aut 
700 1 |a Guo, Hui  |e verfasserin  |4 aut 
700 1 |a Kudo, Gaku  |e verfasserin  |4 aut 
700 1 |a Kuhn, Nikolas J  |e verfasserin  |4 aut 
700 1 |a Müllerová, Jana  |e verfasserin  |4 aut 
700 1 |a Phillips, Michala L  |e verfasserin  |4 aut 
700 1 |a Pombubpa, Nuttapon  |e verfasserin  |4 aut 
700 1 |a Reverchon, Frédérique  |e verfasserin  |4 aut 
700 1 |a Shulman, Hannah B  |e verfasserin  |4 aut 
700 1 |a Stajich, Jason E  |e verfasserin  |4 aut 
700 1 |a Stokes, Alexia  |e verfasserin  |4 aut 
700 1 |a Weber, Sören E  |e verfasserin  |4 aut 
700 1 |a Diez, Jeffrey M  |e verfasserin  |4 aut 
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