{"id":82467,"date":"2023-07-25T09:26:28","date_gmt":"2023-07-25T13:26:28","guid":{"rendered":"https:\/\/mrnf.gouv.qc.ca\/nos-publications\/long-term-simulated-nitrogen-deposition-soil-microbial-communities\/"},"modified":"2023-07-25T09:26:28","modified_gmt":"2023-07-25T13:26:28","slug":"long-term-simulated-nitrogen-deposition-soil-microbial-communities","status":"publish","type":"cpt_publication","link":"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/long-term-simulated-nitrogen-deposition-soil-microbial-communities\/","title":{"rendered":"Long-Term Simulated Nitrogen Deposition Has Moderate Impacts on Soil Microbial Communities across Three Bioclimatic Domains of the Eastern Canadian Forest"},"content":{"rendered":"\n\n\n

Published in Forests 14(6): 1124. https:\/\/doi.org\/10.3390\/f14061124<\/a><\/strong><\/p>\n

The soil microbiome plays major roles in the below-ground processes and productivity of forest ecosystems. Atmospheric nitrogen (N) deposition is predicted to increase globally and might create disturbances in soil microbial communities, essentially by modifying soil chemistry. However, the impacts of higher N deposition on the soil microbiome in N-limited northern forests are still unclear. For 16 years, we simulated N deposition by adding ammonium nitrate at rates of 3 and 10 times the ambient N deposition directly into soils located in three bioclimatic domains of the eastern Canadian forest (i.e., sugar maple\u2013yellow birch, balsam fir\u2013white birch, and black spruce\u2013feather moss). We identified changes in the microbial communities by isolating the DNA of the L, F, and H soil horizons, as well as by sequencing amplicons of the bacterial 16S rRNA gene and the fungal ITS region. We found that long-term increased N deposition had no effect on soil microbial diversity, but had moderate impacts on the composition of the bacterial and fungal communities. The most noticeable change was the increase in ectomycorrhizal fungi ASV abundance, potentially due to increased tree root growth on fertilized plots. Our work suggests that, in N-limited northern forests, extra N is rapidly mobilized by vegetation, thus minimizing impacts on the soil microbiome.<\/p>\n","protected":false},"excerpt":{"rendered":"

Published in Forests 14(6): 1124. https:\/\/doi.org\/10.3390\/f14061124 The soil microbiome plays major roles in the below-ground processes and productivity of forest ecosystems. Atmospheric nitrogen (N) deposition is predicted to increase globally and might create disturbances in soil microbial communities, essentially by modifying soil chemistry. However, the impacts of higher N deposition on the soil microbiome in […]<\/p>\n","protected":false},"template":"","format":"standard","cptt_secteur":[1179],"cptt_theme":[1183,1180,1181],"cptt_categ_publi":[1149],"cptt_auteurs_ministeriels":[1091,1099],"class_list":["post-82467","cpt_publication","type-cpt_publication","status-publish","format-standard","hentry","cptt_secteur-forests","cptt_theme-ecosystems-and-environment","cptt_theme-forestry-research","cptt_theme-forests","cptt_categ_publi-scientific-article","cptt_auteurs_ministeriels-d-houle","cptt_auteurs_ministeriels-j-d-moore"],"acf":[],"yoast_head":"\nLong-Term Simulated Nitrogen Deposition Has Moderate Impacts on Soil Microbial Communities across Three Bioclimatic Domains of the Eastern Canadian Forest - Minist\u00e8re des Ressources naturelles et des For\u00eats<\/title>\n<meta name=\"description\" content=\"Atmospheric nitrogen (N) deposition is predicted to increase globally and might create disturbances in soil microbial communities.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mrnf.gouv.qc.ca\/en\/our-publications\/long-term-simulated-nitrogen-deposition-soil-microbial-communities\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Long-Term Simulated Nitrogen Deposition Has Moderate Impacts on Soil Microbial Communities across Three Bioclimatic Domains of the Eastern Canadian Forest - 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