Quantification of effects of season and nitrogen supply on tree below-ground carbon transfer to ectomycorrhizal fungi and other soil organisms in a boreal pine forest

An evaluation of the ectomycorrhizal status of Eucalyptus plantations in different areas of the Punjab Province, Pakistan is presented. Our study reveals a very low diversity of below-ground ectomycorrhizal fungi associated with Eucalyptus. Through molecular investigation, only three taxa were confirmed to be associated with six different species of Eucalyptus at four sampling sites. Among them, Scleroderma bovista was frequently associated with Eucalyptus in soils having different physicochemical properties highlighting wide ecological amplitude of this species. Scleroderma aurantium and Pisolithus tinctorius were infrequent associates with eucalypt roots. This study is the first consolidated approach to determine the ectomycorrhizal potential of exotic Eucalyptus with the innate fungal flora of Pakistan.

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Studies on ectomycorrhizal basidiomycete in pine forest on the Lithuania-Poland transboundary region

Acta Mycologica ◽

10.5586/am.2007.004 ◽

2013 ◽

Vol 42 (1) ◽

pp. 59-68

Author(s):

Danutė Stankovičienė ◽

Jonas Kaspravičius

Keyword(s):

Species Richness ◽

Ectomycorrhizal Fungi ◽

Main Part ◽

Abundant Species ◽

Pine Forest ◽

Forest Diversity ◽

Study Plot ◽

Frequent Species

The diversity of ectomycorrhizal fungi and sporocarps abundance were investigated in 2003-2005 at nine permanent study plots in a 50-year-old pine forest. Diversity of ectomycorrhizal fungi consisted of 53 taxa and the majority of them belonged to the genera Cortinarius, Russula, Amanita and Tricholoma. The most frequent species, whose fruit bodies were found in each study plot, were C. cibarius, L. necator L. rufus, P. involutus, R. aeruginea, T. saponaceum and the most abundant species which made the main part of total sporocarp yield were C. cibarius and P. involutus. The lowest species richness of ectomycorrhizal fungi was in study plots with the densest cover of grasses. Maximum of species over the fruiting period was characteristic for October and for September. It was noticed that some species virtually never occurred together at the same plot (eg. C. cibarius and H. aurantiaca), meanwhile others occurred together quite frequently (eg. H.aurantiaca and X. badius).

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Below-ground carbon transfer among Betula nana may increase with warming in Arctic tundra

New Phytologist ◽

10.1111/j.1469-8137.2011.03835.x ◽

2011 ◽

Vol 192 (3) ◽

pp. 689-698 ◽

Cited By ~ 58

Author(s):

Julie R. Deslippe ◽

Suzanne W. Simard

Keyword(s):

Arctic Tundra ◽

Betula Nana ◽

Carbon Transfer ◽

Below Ground

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Accumulation and decay of woody detritus in a humid subtropical secondary pine forest

Canadian Journal of Forest Research ◽

10.1139/cjfr-2012-0222 ◽

2013 ◽

Vol 43 (2) ◽

pp. 109-118 ◽

Cited By ~ 20

Author(s):

Megan L. Mobley ◽

Daniel deB. Richter ◽

Paul R. Heine

Keyword(s):

Tree Mortality ◽

Pine Forest ◽

Subtropical Climate ◽

Secondary Forests ◽

Humid Climate ◽

Forest Development ◽

Dead Trees ◽

Below Ground ◽

C And N ◽

Mean Time

The contribution of coarse woody detritus (CWD) to forest C budgets is poorly quantified in general, and especially so for secondary forests. This study quantifies C and N storage in logs and snags and compares the decomposition of this aboveground CWD with that of dead taproots in a 50-year-old secondary pine forest in a humid subtropical climate. We estimated rates of CWD input due to tree mortality over 50 years of forest development and conducted a field inventory of aboveground CWD of four decay classes. Belowground CWD was characterized by excavating 13 taproots of three decay classes. We found that aboveground CWD in this warm and humid climate decays relatively rapidly, with an exponential decay constant of 0.122 and mean time to decomposition of 50% and 95% log mass of 5.6 and 24.3 years, respectively. Our data suggest that most dead trees proceed through the earliest stage of decomposition as standing snags before falling to the ground. We found that changes in wood chemistry during decomposition were similar above and below ground. After 50 years of forest development, logs, snags, and dead taproots comprised 13% of total forest ecosystem C in this secondary pine forest.

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