Ectomycorrhizal fungi in the NITREX site at Gårdsjön, Sweden; below and above-ground responses to experimentally-changed nitrogen inputs 1990–1995

Brandrud, Tor Erik; Timmermann, Volkmar

doi:10.1016/s0378-1127(97)00138-2

Cited by 62 publications

(31 citation statements)

References 12 publications

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“…Exposure of Pinus sylvestris seedlings to oxides of nitrogen (NOx) for short periods (539 days) also had no significant effect on ECM colonization levels (Näsholm et al, 1991). No effects on mycorrhizal colonization, total number of mycorrhizas or frequencies of four common morphotypes of Picea abies were evident after 5 years (Brandrud, 1995;Brandrud & Timmermann, 1998). The addition of nitrogen also did not affect the species richness or diversity of below-ground ECM fungal species in an oligotrophic Swedish Picea abies forest .…”

Section: Nitrogen Deposition and Fertilizationmentioning

confidence: 99%

Fine roots and ectomycorrhizas as indicators of environmental change

Cudlín

Kieliszewska-Rokicka

Rudawska

et al. 2007

Plant Biosystems - An International Journal Dealing with all As

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Human-induced and natural stress factors can affect fine roots and ectomycorrhizas. Therefore they have potential utility as indicators of environmental change. We evaluated, through meta-analysis, the magnitude of the effects of acidic deposition, nitrogen deposition, increased ozone levels, elevated atmospheric carbon dioxide, and drought on fine roots and ectomycorrhizal (ECM) characteristics. Ectomycorrhizal colonization was an unsuitable parameter for environmental change, but fine root length and biomass could be useful. Acidic deposition had a significantly negative impact on fine roots, root length being more sensitive than root biomass. There were no significant effects of nitrogen deposition or elevated tropospheric ozone on the quantitative root parameters. Elevated CO 2 had a significant positive effect. Drought had a significantly negative effect on fine root biomass. The negative effect of acidic deposition and the positive effect of elevated CO 2 increased over time, indicating that effects were persistent contrary the other factors. The meta-analysis also showed that experimental conditions, including both laboratory and field experiments, were a major source of variation. In addition to quantitative changes, environmental changes affect the species composition of the ectomycorrhizal fungal community.

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Section: Nitrogen Deposition and Fertilizationmentioning

confidence: 99%

Fine roots and ectomycorrhizas as indicators of environmental change

Cudlín

Kieliszewska-Rokicka

Rudawska

et al. 2007

Plant Biosystems - An International Journal Dealing with all As

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show abstract

“…Yamanaka (1995c) reported that the ammonia released by urea treatment caused a signifi cant decrease in soil bacteria and nematodes, paralleling the increase of the soil ammonia content after the treatment. Because the amount of N added to the soil at one time in this study was much larger than in other N-fertilization studies (Alexander and Fairley 1983;Termorshuizen 1993;Boxman et al 1998;Brandrud and Timmermann 1998;Jonsson et al 2000;Peter et al 2001), the destructive effects by ammonia were expected to be greater. Their studies, in which the form of N-compounds and the amount of N added to soil at one time varied greatly, differed on whether the density of ECM tips and roots increased or decreased after the treatment.…”

Section: Damaging Effect Of Ammoniamentioning

confidence: 87%

“…Studies on changes in the fungal fl ora after Napplication (N-fertilization) have also been conducted (Alexander and Fairley 1983;Termorshuizen 1993;Boxman et al 1998;Brandrud and Timmermann 1998;Jonsson et al 2000;Peter et al 2001) and revealed the effects of air pollution and acid rain containing NO x on fungi in Europe. However, no study has investigated the phenological dynamics between fruit-body and ECM formation, especially on a local scale.…”

Section: Akio Imamura · Takakazu Yumotomentioning

confidence: 99%

Dynamics of fruit-body production and mycorrhiza formation of ectomycorrhizal ammonia fungi in warm temperate forests in Japan

Imamura

Yumoto

2008

Mycoscience

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“…In the case of Hyytialä, since the atmospheric deposition of N is of negligible amount and the site is N-limited, the role of mycorrhizas appears to be important causing lower foliar δ 15 N values and N concentrations in this site. In the case of spruce of the Solling stand (under high N deposition), mycorrhizal diversity should be greatly declined (Brandrud and Timmermann 1998) and hence there should be lower proportion of myccorhizal N-uptake.…”

Section: Natural 15 N Abundance In the Needle And Littermentioning

confidence: 99%

<sup>15</sup>N natural abundances in two podsol soils of two spruce forests differing in their atmospheric N deposition conditions

Sah¹

2005

PLANT SOIL ENVIRON

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This study aims to investigate the changes in isotope ratios in foliage and soils of the two spruce forests [Picea abies (L.) Karst.] differing greatly in their atmospheric N deposition and climatic conditions. As expected, both N concentrations and δ 15 N values in both needles and li�er were found to be significantly higher in the Solling stand (N-saturated) compared to the Hyytialä stand (N-poor). For the N-limited site (Hyytialä plot), a typical vertical gradient of the soil 15 N-enrichment (both in organic and mineral soil) was observed. The N-saturated site (Solling) differs from the N-limited site (Hyytialä) with respect to the 15 N abundance trend in organic layer. In the upper organic layer up to O-f horizon, i.e. mor layer (0-3.5 cm depth) of Solling plot, there is almost a trend of slight soil 15 N-depletion with increasing depth, and then there is a 15 N-enrichment from O-h horizon (humus layer) of organic layer to mineral soil horizons. This is explained by the presence of prominent NO 3 -leaching at this plot.

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Ectomycorrhizal fungi in the NITREX site at Gårdsjön, Sweden; below and above-ground responses to experimentally-changed nitrogen inputs 1990–1995

Cited by 62 publications

References 12 publications

Fine roots and ectomycorrhizas as indicators of environmental change

Fine roots and ectomycorrhizas as indicators of environmental change

Dynamics of fruit-body production and mycorrhiza formation of ectomycorrhizal ammonia fungi in warm temperate forests in Japan

<sup>15</sup>N natural abundances in two podsol soils of two spruce forests differing in their atmospheric N deposition conditions

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