Phosphorus regulates ectomycorrhizal fungi biomass production in a Norway spruce forest

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Almeida, Juan PabloLunds universitet,Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Biosystem och teknologi,Department of Biosystems and Technology,Lund University,MEMEG,Biologiska institutionen,Naturvetenskapliga fakulteten,Mikrobiologisk ekologi,Forskargrupper vid Lunds universitet,Department of Biology,Faculty of Science,Microbial Ecology,Lund University Research Groups (författare)

Phosphorus regulates ectomycorrhizal fungi biomass production in a Norway spruce forest

Artikel/kapitelEngelska2023

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Copernicus Publications,2023
printrdacarrier

Nummerbeteckningar

LIBRIS-ID:oai:DiVA.org:oru-105889
https://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-105889URI
https://doi.org/10.5194/bg-20-1443-2023DOI
https://res.slu.se/id/publ/122129URI
https://lup.lub.lu.se/record/b937afbb-ca68-4d5f-928d-96a83f80122eURI

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Språk:engelska
Sammanfattning på:engelska

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Ämneskategori:art swepub-publicationtype

Anmärkningar

Ectomycorrhizal fungi (EMF) are important components of soil microbial communities, and EMF biomass can potentially increase carbon (C) stocks by accumulating in the soils as necromass and producing recalcitrant structures. EMF growth depends on the C allocated belowground by the host trees, and the nutrient limitation on tree growth is expected to influence this allocation. Therefore, studying EMF production and understanding the factors that regulates it in natural soils are important to understand C cycling in forests.Fungal mycelium collected from ingrowth mesh bags is commonly used to estimate EMF biomass, but these measurements might not reflect the total EMF production since turnover rates of the hyphae are not considered. Here we estimated EMF production and turnover in response to P fertilization (applied as superphosphate) in a Norway spruce forest where nitrogen (N) deposition has resulted in phosphorus (P) limitation of plant production by using a combination of mesh bags with different incubation periods and with Bayesian inferences. To test how localized patches of N and P influence EMF production and turnover we amended some bags with a nitrogen source (methylene urea) or P source (apatite). Additionally, the Bayesian model tested the effect of seasonality (time of mesh-bag harvesting) on EMF production and turnover.We found that turnover of EMF was not affected by P fertilization or mesh-bag amendment. P fertilization had a negative effect on EMF production in all the mesh-bag amendments, suggesting a reduced belowground C allocation to the EMF when P limitation is alleviated. Apatite amendment significantly increased EMF biomass production in comparison with the pure quartz bags in the control plots but not in the P-fertilized plots. This indicates that P-rich patches enhance EMF production in P-limited forests, but not when P is not limiting. Urea amendment had a generally positive effect on EMF production, but this was significantly reduced by P fertilization, suggesting that a decrease in EMF production due to the alleviated P limitation will affect N foraging. Seasonality had a significant effect on EMF production, and the differences registered between the treatments were higher during the warmer months and disappeared at the end of the growing season.Many studies highlight the importance of N for regulating belowground C allocation to EMF in northern coniferous forests, but here we show that the P status of the forest can be equally important for belowground carbon allocation to EMF production in areas with high N deposition.

Ämnesord och genrebeteckningar

NATURVETENSKAP Geovetenskap och miljövetenskap Miljövetenskap hsv//swe
NATURAL SCIENCES Earth and Related Environmental Sciences Environmental Sciences hsv//eng
NATURVETENSKAP Biologi Ekologi hsv//swe
NATURAL SCIENCES Biological Sciences Ecology hsv//eng
LANTBRUKSVETENSKAPER Lantbruksvetenskap, skogsbruk och fiske Skogsvetenskap hsv//swe
AGRICULTURAL SCIENCES Agriculture, Forestry and Fisheries Forest Science hsv//eng
LANTBRUKSVETENSKAPER Lantbruksvetenskap, skogsbruk och fiske hsv//swe
AGRICULTURAL SCIENCES Agriculture, Forestry and Fisheries hsv//eng

Biuppslag (personer, institutioner, konferenser, titlar ...)

Menichetti, LorenzoSwedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för ekologi,Department of Ecology(Swepub:slu)47934 (författare)
Ekblad, Alf,1957-Örebro University,Örebro universitet,Institutionen för naturvetenskap och teknik(Swepub:oru)afed (författare)
Rosenstock, Nicholas P.Lund University,Lunds universitet,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Centre for Environmental and Climate Science (CEC),Faculty of Science(Swepub:lu)mbio-nar (författare)
Wallander, HåkanLund University,Lunds universitet,MEMEG,Biologiska institutionen,Naturvetenskapliga fakulteten,BECC: Biodiversity and Ecosystem services in a Changing Climate,Centrum för miljö- och klimatvetenskap (CEC),Mikrobiologisk ekologi,Forskargrupper vid Lunds universitet,Department of Biology,Faculty of Science,Centre for Environmental and Climate Science (CEC),Microbial Ecology,Lund University Research Groups(Swepub:lu)mbek-hwa (författare)
Sveriges lantbruksuniversitetBiosystem och teknologi (creator_code:org_t)
Sveriges lantbruksuniversitet

Sammanhörande titlar

Ingår i:Biogeosciences: Copernicus Publications20:7, s. 1443-14581726-41701726-4189

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Av författaren/redakt...: Almeida, Juan Pa ...; Menichetti, Lore ...; Ekblad, Alf, 195 ...; Rosenstock, Nich ...; Wallander, Håkan

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LANTBRUKSVETENSKAPER: LANTBRUKSVETENSK ...; och Lantbruksvetensk ...

Artiklar i publikationen: Biogeosciences

Av lärosätet: Örebro universitet; Sveriges Lantbruksuniversitet; Lunds universitet

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