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dc.contributor.author
Hewitt, Rebecca E.
dc.contributor.author
Taylor, Donald Lee
dc.contributor.author
Hollingsworth, Teresa N.
dc.contributor.author
Anderson, Christopher Brian
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dc.contributor.author
Martínez Pastur, Guillermo José
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dc.date.available
2020-01-14T19:12:59Z
dc.date.issued
2018-07-06
dc.identifier.citation
Hewitt, Rebecca E.; Taylor, Donald Lee; Hollingsworth, Teresa N.; Anderson, Christopher Brian; Martínez Pastur, Guillermo José; Variable retention harvesting influences belowground plant-fungal interactions of Nothofagus pumilio seedlings in forests of southern Patagonia; PeerJ Inc.; PeerJ; 2018; 7; 06-7-2018; 1-25
dc.identifier.issn
2167-8359
dc.identifier.uri
http://hdl.handle.net/11336/94654
dc.description.abstract
Background. The post-harvest recovery and sustained productivity of Nothofagus pumilio forests in Tierra del Fuego may be affected by the abundance and composition of ectomycorrhizal fungi (EMF). Timber harvesting alters EMF community structure in many managed forests, but the impacts of harvesting can vary with the management strategy. The implementation of variable retention (VR) management can maintain, increase, or decrease the diversity of many species, but the effects of VR on EMF in the forests of southern Patagonia have not been studied, nor has the role of EMF in the regeneration process of these forests. Methods. We evaluated the effects of VR management on the EMF community associated with N. pumilio seedlings. We quantified the abundance, composition, and diversity of EMF across aggregate (AR) and dispersed (DR) retention sites within VR managed areas, and compared them to primary forest (PF) unmanaged stands. EMF assemblage and taxonomic identities were determined by ITS-rDNA sequencing of individual root tips sampled from 280 seedlings across three landscape replicates. To better understand seedling performance, we tested the relationships between EMF colonization, EMF taxonomic composition, seedling biomass, and VR treatment. Results. The majority of EMF taxa were Basidiomycota belonging to the families Cortinariaceae (n = 29), Inocybaceae (n = 16), and Thelephoraceae (n = 8), which was in agreement with other studies of EMF diversity in Nothofagus forests. EMF richness and colonization was reduced in DR compared to AR and PF. Furthermore, EMF community composition was similar between AR and PF, but differed from the composition in DR. EMF community composition was correlated with seedling biomass and soil moisture. The presence of Peziza depressa was associated with higher seedling biomass and greater soil moisture, while Inocybe fibrillosibrunnea and Cortinarius amoenus were associated with reduced seedling biomass and lower soil moisture. Seedling biomass was more strongly related to retention type than EMF colonization, richness, or composition. Discussion. Our results demonstrate reduced EMF attributes and altered composition in VR treatments relative to PF stands, with stronger impacts in DR compared to AR. This suggests that VR has the potential to improve the conservation status of managed stands by supporting native EMF in AR. Our results also demonstrate the complex linkages between retention treatments, fungal community composition, and tree growth at individual and stand scales.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
PeerJ Inc.
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
AGGREGATE RETENTION
dc.subject
DISPERSED RETENTION
dc.subject
ECTOMYCORRHIZAL FUNGI
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FOREST SUSTAINABILITY
dc.subject
LENGA
dc.subject
RECRUITMENT
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SILVICULTURE
dc.subject
TIERRA DEL FUEGO
dc.subject.classification
Silvicultura
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dc.subject.classification
Agricultura, Silvicultura y Pesca
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dc.subject.classification
CIENCIAS AGRÍCOLAS
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dc.title
Variable retention harvesting influences belowground plant-fungal interactions of Nothofagus pumilio seedlings in forests of southern Patagonia
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-17T14:03:45Z
dc.journal.volume
2018
dc.journal.number
7
dc.journal.pagination
1-25
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Hewitt, Rebecca E.. University Of Alaska; Estados Unidos. Northern Arizona University; Estados Unidos
dc.description.fil
Fil: Taylor, Donald Lee. University of New Mexico; Estados Unidos. University Of Alaska; Estados Unidos
dc.description.fil
Fil: Hollingsworth, Teresa N.. Usda Forest Service. Pacific Northwest Research Station; Estados Unidos
dc.description.fil
Fil: Anderson, Christopher Brian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Universidad Nacional de Tierra del Fuego; Argentina
dc.description.fil
Fil: Martínez Pastur, Guillermo José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.journal.title
PeerJ
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://peerj.com/articles/5008
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.7717/peerj.5008
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