Elevated atmospheric CO2 alters root symbiont community structure in forest trees

Elevated atmospheric CO2 alters root symbiont community structure in forest trees

•  Changes in below-ground ectomycorrhizal (ECM) community structure in response to elevated CO2 and balanced nutrient addition were investigated in a 37-yr-old Picea abies forest. • Trees in whole-tree chambers were exposed to factorial combinations of ambient/elevated CO2 (700 ppm) and fertilizati...

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Veröffentlicht in:The New phytologist. - 1979. - 152(2001), 3 vom: 18. Dez., Seite 431-442
1. Verfasser: Fransson, Petra M A (VerfasserIn)
Weitere Verfasser: Taylor, Andrew F S, Finlay, Roger D
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2001
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article carbon community structure ectomycorrhizal fungi elevated CO2 ordination analysis
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520 |a •  Changes in below-ground ectomycorrhizal (ECM) community structure in response to elevated CO2 and balanced nutrient addition were investigated in a 37-yr-old Picea abies forest. • Trees in whole-tree chambers were exposed to factorial combinations of ambient/elevated CO2 (700 ppm) and fertilization (+/-). ECM fungal community structure was determined in 1997 and 2000 using a combination of morphotyping and molecular analyses. Samples were taken both from chambers and from reference trees receiving the same fertilization treatments but without chambers. • Significant effects on ECM community structure were found in response to elevated CO2 . Neither elevated CO2 nor fertilization altered species richness; however, there was considerable variation among samples, which may have masked treatment effects on individual species. After 3 yr, the effects of elevated CO2 on community composition were of the same magnitude as those seen after 15 yr of fertilization treatment. • Our results show that increasing atmospheric CO2 concentrations affect the community structure of root symbionts colonizing forest trees. The potential effects of altered ECM community structure on allocation and turnover of carbon and nutrients within forest ecosystems are discussed 
650 4 |a Journal Article 
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650 4 |a elevated CO2 
650 4 |a ordination analysis 
700 1 |a Taylor, Andrew F S  |e verfasserin  |4 aut 
700 1 |a Finlay, Roger D  |e verfasserin  |4 aut 
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