Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Increased ectomycorrhizal fungal abundance after long-term fertilization and warming of two arctic tundra ecosystems
Responsible organisation
2006 (English)In: New Phytologist, ISSN 0028-646X, E-ISSN 1469-8137, Vol. 171, no 2, 391-404 p.Article in journal (Refereed) Published
Abstract [en]

Shrub abundance is expected to increase with enhanced temperature and nutrient availability in the Arctic, and associated changes in abundance of ectomycorrhizal (EM) fungi could be a key link between plant responses and longer-term changes in soil organic matter storage. This study quantifies the response in EM fungal abundance to long-term warming and fertilization in two arctic ecosystems with contrasting responses of the EM shrub Betula nana. Ergosterol was used as a biomarker for living fungal biomass in roots and organic soil and ingrowth bags were used to estimate EM mycelial production. We measured N-15 and C-13 natural abundance to identify the EM-saprotrophic divide in fungal sporocarps and to validate the EM origin of mycelia in the ingrowth bags. Fungal biomass in soil and EM mycelial production increased with fertilization at both tundra sites, and with warming at one site. This was caused partly by increased dominance of EM plants and partly by stimulation of EM mycelial growth. We conclude that cycling of carbon and nitrogen through EM fungi will increase when strongly nutrient-limited arctic ecosystems are exposed to a warmer and more nutrient-rich environment. This has potential consequences for below-ground litter quality and quantity, and for accumulation of organic matter in arctic soils.

Place, publisher, year, edition, pages
BLACKWELL PUBLISHING , 2006. Vol. 171, no 2, 391-404 p.
Keyword [en]
Betula nana (dwarf birch); ergosterol; fertilization; external mycelium; stable isotopes; warming; C-13 natural abundance; N-15 natural abundance
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:polar:diva-3674DOI: 10.1111/j.1469-8137.2006.01778.xOAI: oai:DiVA.org:polar-3674DiVA: diva2:1103666
Available from: 2017-05-30 Created: 2017-05-30 Last updated: 2017-05-30

Open Access in DiVA

No full text

Other links

Publisher's full text
In the same journal
New Phytologist
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 11 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf