| Title | Tree species richness and water availability interact to affect soil microbial processes |
| Publication Type | Journal Article |
| Year of Publication | 2021 |
| Authors | Strukelj M., Parker W., Corcket E., Augusto L., Khlifa R., Jactel H., Munson A.D |
| Journal | Soil Biology and Biochemistry |
| Volume | 155 |
| Pagination | 12 |
| Date Published | Apr |
| Type of Article | Article |
| ISBN Number | 0038-0717 |
| Accession Number | WOS:000626605700018 |
| Keywords | Agriculture, Biodiversity experiments, drought, functional diversity, Microbial activity, MicroResp, Soil carbon |
| Abstract | The objective of this study was to examine the interactive influence of tree diversity and water availability on microbial functioning in surface soil (0-10 cm). The study was conducted at two field experiments (ages 4.2 and 9.0 years, respectively) of the TreeDivNet platform that established plantations with a gradient of tree species richness exposed to high and low water availability treatments. Soil microbial biomass, activity, functional diversity and functional identity were estimated using the MicroResp (TM) method. Soil organic carbon and several other variables potentially associated with soil processes (soil moisture, soil and air temperature, soil pH, soil C:N ratio, tree biomass) were also measured. Our results indicate that tree species richness significantly increased soil microbial biomass and, to a lesser extent, soil microbial activity in the high water availability treatment, at both trial sites. However, tree species richness effects on microbial processes were not expressed in the low water availability treatment, contrary to the stress-gradient hypothesis. Tree species richness and water treatment interaction impacted microbial biomass and activity through their effects on microbial functional diversity and identity at one site and air temperature at the other site. In conclusion, the mechanisms through which tree diversity creates bottom-up effects on biological soil processes depend on environmental conditions and time following the establishment of tree communities. Future research relating diversity and water availability effects on soil microbial processes should consider functional traits of tree species and a larger range of trophic levels including herbivores and soil fauna to better understand biodiversity-soil ecosystem function relationships in forest ecosystems.
|
| Short Title | Soil Biol. Biochem.Soil Biol. Biochem. |
| Alternate Journal | Soil Biol. Biochem. |
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Strukelj, Manuella Parker, William Corcket, Emmanuel Augusto, Laurent Khlifa, Rim Jactel, Herve Munson, Alison D.
Munson, Alison/0000-0001-6013-7998
Fonds quebecois de recherche sur la nature et les technologies (FRQNT); NSERC Discovery GrantNatural Sciences and Engineering Research Council of Canada (NSERC); French National Research AgencyFrench National Research Agency (ANR) [ANR-16-CE32-0003]
We are grateful to Nathalie Fromin, Bruno Buatois, Alain Brousseau, Marie R. Coyea, Jean-Guy Catford, Sebastien Dumont, Jessica Gosselin for laboratory analyses and assistance, Brian Brown, Florine Routier, Edith Reuzeau for field assistance, and Celine Meredieu for providing data on trees at ORPHEE. This study was supported by a postdoctoral research scholarship from the Fonds quebecois de recherche sur la nature et les technologies (FRQNT) and support from an NSERC Discovery Grant to ADM. The activities of LA and HJ, dendrometric measurements and irrigation at the ORPHEE site were supported by the French National Research Agency in the framework of the DiPTiCC research project (ANR-16-CE32-0003).
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Pergamon-elsevier science ltd
Oxford
1879-3428
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[biblio_auth_address] => [Strukelj, Manuella; Munson, Alison D.] Univ Laval, Ctr Forest Res, Dept Sci Bois & Foret, 2405 Rue Terrasse, Quebec City, PQ G1V 0A6, Canada. [Parker, William] Ontario Forest Res Inst, 1235 Queen St E, Sault Ste Marie, ON P6A 2E5, Canada. [Corcket, Emmanuel] Univ Bordeaux, BIOGECO, INRAE, F-33600 Pessac, France. [Augusto, Laurent] INRAE, Bordeaux Sci Agro, ISPA, F-33883 Villenave Dornon, France. [Khlifa, Rim] Univ Quebec Montreal, Ctr Forest Res, Montreal, PQ, Canada. [Khlifa, Rim] Univ Teluq, Dept Sci & Technol, Montreal, PQ, Canada. [Jactel, Herve] Univ Bordeaux, BIOGECO, INRAE, F-33610 Cestas, France.
Strukelj, M (corresponding author), Univ Laval, Ctr Forest Res, Dept Sci Bois & Foret, 2405 Rue Terrasse, Quebec City, PQ G1V 0A6, Canada.
manuella.strukelj-humphery@uqat.ca; bill.parker@ontario.ca; emmanuel.corcket@u-bordeaux.fr; laurent.augusto@inrae.fr; rim.khlifa@gmail.com; herve.jactel@inrae.fr; alison.munson@sbf.ulaval.ca
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