Annual growth of invasive Larix kaempferi seedlings with reference to microhabitat and ectomycorrhizal colonization on a volcano

Akasaka, Munemitsu; Tsuyuzaki, Shiro; Hase, Akira

doi:10.1007/s10265-006-0052-1

Cited by 4 publications

(7 citation statements)

References 27 publications

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“…Komagatake (Sasaoka et al 1999;Qu et al 2004a;Tsuyuzaki 2005, 2009;Akasaka et al 2007). Yang et al (1998) suggested that the ECM types identified by morphology increased with increasing altitude up to 700 m a.s.l.…”

Section: Introductionmentioning

confidence: 95%

“…hereafter larch) forms symbiosis with ECM fungi (e.g., Yang et al 1998;Qu et al 2004b;Nara 2006;Akasaka et al 2007) and is distributed across subalpine areas of central Japan (Horikawa 1972). Larch is able to regenerate on slopes of volcanos (Ishikawa et al 1978;Maeda et al 1978;Tanaka et al 2008).…”

Section: Introductionmentioning

confidence: 98%

“…The mountain slopes of volcanos are characterized by a severe environment for the regeneration of seedlings, partly due to the accumulation of volcanic ash including pumice. Tephra produced by volcanic eruptions often lacks nutrients (Braatne and Bliss 1999;Adikari et al 2007;Akasaka et al 2007;Kayama et al 2011). As a result, plants grown in these environments suffer from nutrient deficiency (e.g., Qu et al 2004a;Kayama et al 2011).…”

Section: Introductionmentioning

confidence: 98%

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Elements and ectomycorrhizal symbiosis affecting the growth of Japanese larch seedlings regenerated on slopes of an active volcano in northern Japan

Kayama

Koike

2015

Trees

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Key message The growth of Japanese larch seedlings is regulated by the presence of nutrients as well as ectomycorrhizal symbiosis. Abstract The mountain slope of an active volcano is a severe environment for the regeneration of larch (Larix kaempferi Sarg. hereafter larch) seedlings. To determine parameters affecting the growth of larch seedlings, we analyzed stoichiometry of elements in the soils and plant organs, ectomycorrhizal (ECM) colonization, and photosynthetic abilities. These parameters were compared with two different elevations. From nutrient analysis of plant organs from larch seedlings grown on the slope of a volcano, potassium (K) was insufficient compared with the seedlings grown in other habitats. Symbiosis with ECM fungi enabled the uptake of nutrients, especially phosphorous (P) and nitrogen (N). The main factor affecting the differences in relative height growth rate (RHGr) of larch was attributed to ECM colonization. There was a positive relationship between ECM colonization and concentrations of P or N in needles. Larch seedlings with high rates of ECM colonization showed high concentrations of P and N, and had high photosynthetic rates. At lower elevation sites, concentrations of N and K in needles were low with high density of individuals. Moreover, larch showed a high accumulation of aluminum (Al) and iron (Fe) even though the amount of these elements in the soil was small. These seedlings exhibited a suppressed photosynthetic rate and RHGr. Symbiosis with ECM fungi could suppress the excessive uptake of Al and Fe.

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Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

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Elements and ectomycorrhizal symbiosis affecting the growth of Japanese larch seedlings regenerated on slopes of an active volcano in northern Japan

Kayama

Koike

2015

Trees

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“…Such site-specific dissimilarities have been observed in the lava flow at Mt. OshimaKoma of Hokkaido island, Japan (Akasaka et al 2007;Kayama et al 2015). In a study of Japanese larch (Larix kaempferi) seedlings from three microhabitats in three elevation zones, the results showed that the highest ECM colonization rate occurred in the most shaded micro-habitat with Larix understory than in the other two habitats (bare-ground and Salix reinii patch).…”

Section: Ecm Colonization Rate and Species Diversity Under Elevated Comentioning

confidence: 79%

Effects of CO<sub>2</sub> and O<sub>3</sub> on the interaction between root of woody plants and ectomycorrhizae

Wang

Agathokleous

et al. 2016

J. Agric. Meteorol.

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The increase of atmospheric carbon dioxide (CO 2 ) and tropospheric ozone (O 3 ) concentrations has affected forest ecosystems both above and below ground. A high dose of O 3 alters stomatal function and accelerates foliar senescence, which lead to changes in assimilation and water use efficiency. Consequently, biomass production and plant growth are suppressed by elevated levels of O 3 . In contrast, elevated CO 2 ameliorates these responses of plants to high O 3 via stomatal closure. The harmful effect of O 3 on above ground is indirectly linked with below-ground. Importantly, the fine root dynamics and the relationship with symbiotic fungi are significantly influenced. However, the effects of such a changing environment on forest rhizosphere are still poorly understood. The aim of this study is to analyze the combination effect of CO 2 and O 3 on tree roots and ectomycorrhizae. In particular, we summarize and discuss 1) the response of ectomycorrhizal symbionts (colonization rate, community composition, richness, and diversity) under these environmental stresses; and 2) the root dynamics under elevated CO 2 and O 3 concentrations, along with current methodologies used for root sampling.

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“…Age was evaluated for 90 L. kaempferi seedlings, confirming that they were ≤ 10 year old (Akasaka et al 2007). Small saplings of Betula and Populus were not always identified to species at the first census.…”

Section: Plot Surveymentioning

confidence: 99%

Comparisons of recruitment, survival, and growth in invasive and native saplings on a volcano

Akasaka

Tsuyuzaki

2008

Plant Ecol

Self Cite

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We monitored the recruitment, survival and growth of tree saplings on invasive (Larix kaempferi) vs native species (Betula and Populus) using 16 20 m × 20 m plots established along elevation gradient on the volcano Mount Koma, Japan, for seven years, because the sapling behaviors should determine forest structures. The crowding of overstory consisting mostly of Larix decreased with increasing elevation.Larix recruits were conspicuous, particularly at middle elevation where overstory crowding was intermediate, while Betula recruits were least. Larix overstory crowding inhibited the recruitment of all the taxa, although intermediate crowding promoted the recruitment of Larix. The restriction of sapling emergence was conspicuous at lower elevation where the overstory crowding was highest, probably because of shading, and/or competition with overstory trees. Sapling recruitment for all taxa was restricted at higher elevation, due to high stresses derived from direct solar radiation and strong wind without overstory. The survival percent of saplings was 96% for Larix and Betula, while it was ca 50% for Populus. Larix overstory decreased the survival and growth of all the taxa, except Larix survival and Betula growth. The results implied that Larix could establish by high survival once the recruits succeeded everywhere and native sapling regeneration was restricted by Larix overstory. Strong recruitment, survival, and growth of Larix, together with resistance to overstory crowding, enables it to dominate and persist in such disturbed areas regardless of the canopy closure.

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Annual growth of invasive Larix kaempferi seedlings with reference to microhabitat and ectomycorrhizal colonization on a volcano

Cited by 4 publications

References 27 publications

Elements and ectomycorrhizal symbiosis affecting the growth of Japanese larch seedlings regenerated on slopes of an active volcano in northern Japan

Elements and ectomycorrhizal symbiosis affecting the growth of Japanese larch seedlings regenerated on slopes of an active volcano in northern Japan

Effects of CO<sub>2</sub> and O<sub>3</sub> on the interaction between root of woody plants and ectomycorrhizae

Comparisons of recruitment, survival, and growth in invasive and native saplings on a volcano

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