Boreal Forest Multifunctionality Is Promoted by Low Soil Organic Matter Content and High Regional Bacterial Biodiversity in Northeastern Canada
Boreal forests provide important ecosystem services, most notably being the mitigation of increasing atmospheric CO<sub>2</sub> emissions. Microbial biodiversity, particularly the local diversity of fungi, has been shown to promote multiple functions of the boreal forests of Northeastern...
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doaj-c4ed60470d7b440895d83e11e5eca7e62020-11-25T02:05:26ZengMDPI AGForests1999-49072020-01-0111214910.3390/f11020149f11020149Boreal Forest Multifunctionality Is Promoted by Low Soil Organic Matter Content and High Regional Bacterial Biodiversity in Northeastern CanadaRoxanne Giguère-Tremblay0Genevieve Laperriere1Arthur de Grandpré2Amélie Morneault3Danny Bisson4Pierre-Luc Chagnon5Hugo Germain6Vincent Maire7Laboratoire Écologie Végétale Fonctionnelle (LEAF), Département des Sciences de l’Environnement, Université du Québec à Trois-Rivières, Trois-Rivières, QC G8Z 4M3, CanadaGroupe de Recherche en Biologie Végétale (GRBV), Université du Québec à Trois-Rivières, Trois-Rivières, QC G8Z 4M3, CanadaCentre de Recherche sur les Interactions Bassins Versants—Écosystèmes aquatiques (RIVE), Département des Sciences de l’Environnement, Université du Québec à Trois-Rivières, Trois-Rivières, QC G8Z 4M3, CanadaLaboratoire Écologie Végétale Fonctionnelle (LEAF), Département des Sciences de l’Environnement, Université du Québec à Trois-Rivières, Trois-Rivières, QC G8Z 4M3, CanadaProgigraph Inc., Val d’Or, QC J9P 1S2, CanadaInstitut de Recherche en Biologie Végétale (IRBV) et Département de Sciences Biologiques, Université de Montréal, Montréal, QC H3T 1J4, CanadaGroupe de Recherche en Biologie Végétale (GRBV), Université du Québec à Trois-Rivières, Trois-Rivières, QC G8Z 4M3, CanadaLaboratoire Écologie Végétale Fonctionnelle (LEAF), Département des Sciences de l’Environnement, Université du Québec à Trois-Rivières, Trois-Rivières, QC G8Z 4M3, CanadaBoreal forests provide important ecosystem services, most notably being the mitigation of increasing atmospheric CO<sub>2</sub> emissions. Microbial biodiversity, particularly the local diversity of fungi, has been shown to promote multiple functions of the boreal forests of Northeastern China. However, this microbial biodiversity-multifunctionality relationship has yet to be explored in Northeastern Canada, where historical environment have shaped a different regional pool of microbial diversity. This study focuses on the relationship between the soil microbiome and ecosystem multifunctionality, as well as the influence of pH and redox potential (Eh) on the regulation of such relationship. Structural equation modelling (SEM) was used to explore the different causal relationships existing in the studied ecosystems. In a managed part of the Canadian boreal forest, 156 forest polygons were sampled to (1) estimate the α- and β-diversity of fungal and bacterial communities and (2) measure 12 ecosystem functions mainly related to soil nutrient storage and cycling. Both bacteria and fungi influenced ecosystem multifunctionality, but on their own respective functions. Bacterial β-diversity was the most important factor increasing primary productivity and soil microbial biomass, while reducing soil emitted atmospheric CO<sub>2</sub>. Environmental characteristics, particularly low levels of organic matter in soil, were shown to have the strongest positive impact on boreal ecosystem multifunctionality. Overall, our results were consistent with those obtained in Northeastern China; however, some differences need to be further explored especially considering the history of forest management in Northeastern Canada.https://www.mdpi.com/1999-4907/11/2/149bacteriaboreal forestsoil ehfungimultifunctionalitysoil ph |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Roxanne Giguère-Tremblay Genevieve Laperriere Arthur de Grandpré Amélie Morneault Danny Bisson Pierre-Luc Chagnon Hugo Germain Vincent Maire |
spellingShingle |
Roxanne Giguère-Tremblay Genevieve Laperriere Arthur de Grandpré Amélie Morneault Danny Bisson Pierre-Luc Chagnon Hugo Germain Vincent Maire Boreal Forest Multifunctionality Is Promoted by Low Soil Organic Matter Content and High Regional Bacterial Biodiversity in Northeastern Canada Forests bacteria boreal forest soil eh fungi multifunctionality soil ph |
author_facet |
Roxanne Giguère-Tremblay Genevieve Laperriere Arthur de Grandpré Amélie Morneault Danny Bisson Pierre-Luc Chagnon Hugo Germain Vincent Maire |
author_sort |
Roxanne Giguère-Tremblay |
title |
Boreal Forest Multifunctionality Is Promoted by Low Soil Organic Matter Content and High Regional Bacterial Biodiversity in Northeastern Canada |
title_short |
Boreal Forest Multifunctionality Is Promoted by Low Soil Organic Matter Content and High Regional Bacterial Biodiversity in Northeastern Canada |
title_full |
Boreal Forest Multifunctionality Is Promoted by Low Soil Organic Matter Content and High Regional Bacterial Biodiversity in Northeastern Canada |
title_fullStr |
Boreal Forest Multifunctionality Is Promoted by Low Soil Organic Matter Content and High Regional Bacterial Biodiversity in Northeastern Canada |
title_full_unstemmed |
Boreal Forest Multifunctionality Is Promoted by Low Soil Organic Matter Content and High Regional Bacterial Biodiversity in Northeastern Canada |
title_sort |
boreal forest multifunctionality is promoted by low soil organic matter content and high regional bacterial biodiversity in northeastern canada |
publisher |
MDPI AG |
series |
Forests |
issn |
1999-4907 |
publishDate |
2020-01-01 |
description |
Boreal forests provide important ecosystem services, most notably being the mitigation of increasing atmospheric CO<sub>2</sub> emissions. Microbial biodiversity, particularly the local diversity of fungi, has been shown to promote multiple functions of the boreal forests of Northeastern China. However, this microbial biodiversity-multifunctionality relationship has yet to be explored in Northeastern Canada, where historical environment have shaped a different regional pool of microbial diversity. This study focuses on the relationship between the soil microbiome and ecosystem multifunctionality, as well as the influence of pH and redox potential (Eh) on the regulation of such relationship. Structural equation modelling (SEM) was used to explore the different causal relationships existing in the studied ecosystems. In a managed part of the Canadian boreal forest, 156 forest polygons were sampled to (1) estimate the α- and β-diversity of fungal and bacterial communities and (2) measure 12 ecosystem functions mainly related to soil nutrient storage and cycling. Both bacteria and fungi influenced ecosystem multifunctionality, but on their own respective functions. Bacterial β-diversity was the most important factor increasing primary productivity and soil microbial biomass, while reducing soil emitted atmospheric CO<sub>2</sub>. Environmental characteristics, particularly low levels of organic matter in soil, were shown to have the strongest positive impact on boreal ecosystem multifunctionality. Overall, our results were consistent with those obtained in Northeastern China; however, some differences need to be further explored especially considering the history of forest management in Northeastern Canada. |
topic |
bacteria boreal forest soil eh fungi multifunctionality soil ph |
url |
https://www.mdpi.com/1999-4907/11/2/149 |
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