Mycorrhizal feedbacks influence global forest structure and diversity

Delavaux, Camille S.; LaManna, Joseph A.; Myers, Jonathan A.; Phillips, Richard P.; Aguilar, Salomón; Allen, David; Alonso, Alfonso; Anderson-Teixeira, Kristina J.; Baker, Matthew E.; Baltzer, Jennifer L.; Bissiengou, Pulchérie; Bonfim, Mariana; Bourg, Norman A.; Brockelman, Warren Y.; Burslem, David F.R.P.; Chang, Li-Wan; Chen, Yang; Chiang, Jyh-Min; Chu, Chengjin; Clay, Keith; Cordell, Susan; Cortese, Mary; den Ouden, Jan; Dick, Christopher; Ediriweera, Sisira; Ellis, Erle C.; Feistner, Anna; Freestone, Amy L.; Giambelluca, Thomas; Giardina, Christian P.; Gilbert, Gregory S.; He, Fangliang; Holík, Jan; Howe, Robert W.; Huaraca Huasca, Walter; Hubbell, Stephen P.; Inman, Faith; Jansen, Patrick A.; Johnson, Daniel J.; Kral, Kamil; Larson, Andrew J.; Litton, Creighton M.; Lutz, James A.; Malhi, Yadvinder; McGuire, Krista; McMahon, Sean M.; McShea, William J.; Memiaghe, Hervé; Nathalang, Anuttara; Norden, Natalia; Novotny, Vojtech; O’Brien, Michael J.; Orwig, David A.; Ostertag, Rebecca; Parker, Geoffrey G. ('Jess'); Pérez, Rolando; Reynolds, Glen; Russo, Sabrina E.; Sack, Lawren; Šamonil, Pavel; Sun, I-Fang; Swanson, Mark E.; Thompson, Jill ORCID:; Uriarte, Maria; Vandermeer, John; Wang, Xihua; Ware, Ian; Weiblen, George D.; Wolf, Amy; Wu, Shu-Hui; Zimmerman, Jess K.; Lauber, Thomas; Maynard, Daniel S.; Crowther, Thomas W.; Averill, Colin. 2023 Mycorrhizal feedbacks influence global forest structure and diversity. Communications Biology, 6 (1), 1066. 11, pp.

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One mechanism proposed to explain high species diversity in tropical systems is strong negative conspecific density dependence (CDD), which reduces recruitment of juveniles in proximity to conspecific adult plants. Although evidence shows that plant-specific soil pathogens can drive negative CDD, trees also form key mutualisms with mycorrhizal fungi, which may counteract these effects. Across 43 large-scale forest plots worldwide, we tested whether ectomycorrhizal tree species exhibit weaker negative CDD than arbuscular mycorrhizal tree species. We further tested for conmycorrhizal density dependence (CMDD) to test for benefit from shared mutualists. We found that the strength of CDD varies systematically with mycorrhizal type, with ectomycorrhizal tree species exhibiting higher sapling densities with increasing adult densities than arbuscular mycorrhizal tree species. Moreover, we found evidence of positive CMDD for tree species of both mycorrhizal types. Collectively, these findings indicate that mycorrhizal interactions likely play a foundational role in global forest diversity patterns and structure.

Item Type: Publication - Article
Digital Object Identifier (DOI):
UKCEH and CEH Sections/Science Areas: Biodiversity (Science Area 2017-)
ISSN: 2399-3642
Additional Information. Not used in RCUK Gateway to Research.: Open Access paper - full text available via Official URL link.
Additional Keywords: biodiversity, biogeography, forest ecology
NORA Subject Terms: Ecology and Environment
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Date made live: 10 Nov 2023 09:06 +0 (UTC)

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