研究者データベース

宮本 裕美子(ミヤモト ユミコ)
北極域研究センター
博士研究員

基本情報

所属

  • 北極域研究センター

職名

  • 博士研究員

ホームページURL

J-Global ID

研究キーワード

  • 気候変動   生物群集   菌根菌   森林生態   

研究活動情報

論文

  • Discovery of Rhizopogon associated with Larix from northeastern Siberia: Insights into host shift of ectomycorrhizal fungi.
    Miyamoto Y, Maximov, T.C, Sugimoto A, Nara K
    Mycoscience 60 274 - 280 2019年09月 [査読有り][通常論文]
  • Temperature niche position and breadth of ectomycorrhizal fungi: Reduced diversity under warming predicted by a nested community structure
    Miyamoto Y, Terashima Y, Nara K
    Global Change Biology 24 5724 - 5737 2018年11月 [査読有り][通常論文]
  • Yumiko Miyamoto, Maki Narimatsu, Kazuhide Nara
    Fungal Ecology 33 125 - 133 2018年06月01日 [査読有り][通常論文]
     
    Numerous studies have recognized a biogeographic boundary (i.e., Blakiston's Line) between Hokkaido and Honshu, Japan, where the Tsugaru Strait probably functions as a geographic barrier to the movement of terrestrial species. To clarify if this biogeographic boundary applies to soil microbes, we examined community structures of ectomycorrhizal (EM) fungi across the Tsugaru Strait. We sampled 266 soil cores from six conifer-dominated forests, and collected EM roots for fungal species identification based on internal transcribed spacer sequences. We found that EM fungal communities were primarily influenced by contemporary climate, but not significantly by the geographic barrier or spatial distance. Fungal OTUs appeared to be widespread in the Holarctic regions, suggesting long-distance dispersal capabilities or ancient migrations before the separation of Japanese islands from the continent. The significant effects of climate in this and previous studies imply that EM fungal communities may be sensitive to future climate change.
  • Yumiko Miyamoto, Kazuhide Nara
    MYCORRHIZA 26 3 189 - 197 2016年04月 [査読有り][通常論文]
     
    We conducted bioassay experiments to investigate the soil propagule banks of ectomycorrhizal (EM) fungi in old-growth forests along an elevation gradient and compared the elevation pattern with the composition of EM fungi on existing roots in the field. In total, 150 soil cores were collected from three forests on Mt. Ishizuchi, western Japan, and subjected to bioassays using Pinus densiflora and Betula maximowicziana. Using molecular analyses, we recorded 23 EM fungal species in the assayed propagule banks. Eight species (34.8 %) were shared across the three sites, which ranged from a warm-temperate evergreen mixed forest to a subalpine conifer forest. The elevation pattern of the assayed propagule banks differed dramatically from that of EM fungi on existing roots along the same gradient, where only a small proportion of EM fungal species (3.5 %) were shared across sites. The EM fungal species found in the assayed propagule banks included many pioneer fungal species and composition differed significantly from that on existing roots. Furthermore, only 4 of 23 species were shared between the two host species, indicating a strong effect of bioassay host identity in determining the propagule banks of EM fungi. These results imply that the assayed propagule bank is less affected by climate compared to EM fungal communities on existing roots. The dominance of disturbance-dependent fungal species in the assayed propagule banks may result in higher ecosystem resilience to disturbance even in old-growth temperate forests.
  • Yumiko Miyamoto, Atsushi Sakai, Masahira Hattori, Kazuhide Nara
    ISME JOURNAL 9 8 1870 - 1879 2015年08月 [査読有り][通常論文]
     
    Separating the effects of environmental factors and spatial distance on microbial composition is difficult when these factors covary. We examined the composition of ectomycorrhizal (EM) fungi along elevation gradients on geographically distant mountains to clarify the effect of climate at the regional scale. Soil cores were collected from various forest types along an elevation gradient in southwestern Japan. Fungal species were identified by the internal transcribed spacer regions of the rDNA using direct sequencing. The occurrence of fungal species in this study was compared with a previous study conducted on a mountain separated by similar to 550 km. In total, we recorded 454 EM fungi from 330 of 350 soil cores. Forty-seven fungal species (similar to 20% of the total excluding singletons) were shared between two mountains, mostly between similar forest types on both mountains. Variation partitioning in redundancy analysis revealed that climate explained the largest variance in EM fungal composition. The similarity of forest tree composition, which is usually determined by climatic conditions, was positively correlated with the similarity of the EM fungal composition. However, the lack of large host effects implied that communities of forest trees and EM fungi may be determined independently by climate. Our data provide important insights that host plants and mutualistic fungi may respond to climate change idiosyncratically, potentially altering carbon and nutrient cycles in relation to the plant-fungus associations.
  • Yumiko Miyamoto, Takashi Nakano, Masahira Hattori, Kazuhide Nara
    ISME JOURNAL 8 8 1739 - 1746 2014年08月 [査読有り][通常論文]
     
    Mid-domain effect (MDE) models predict that the random placement of species' ranges within a bounded geographical area leads to increased range overlap and species richness in the center of the bounded area. These models are frequently applied to study species-richness patterns of macroorganisms, but the MDE in relation to microorganisms is poorly understood. In this study, we examined the characteristics of the MDE in richness patterns of ectomycorrhizal (EM) fungi, an ecologically important group of soil symbionts. We conducted intensive soil sampling to investigate overlap among species ranges and the applicability of the MDE to EM fungi in four temperate forest stands along an elevation gradient on Mount Fuji, Japan. Molecular analyses using direct sequencing revealed 302 EM fungal species. Of 73 EM fungal species found in multiple stands, 72 inhabited a continuous range along the elevation gradient. The maximum overlap in species range and the highest species richness occurred at elevations in the middle of the gradient. The observed richness pattern also fit within the 95% confidence interval of the mid-domain null model, supporting the role of the MDE in EM fungal richness. Deviation in observed richness from the mean of the mid-domain null estimation was negatively correlated with some environmental factors, including precipitation and soil C/N, indicating that unexplained richness patterns could be driven by these environmental factors. Our results clearly support the existence of microbial species' ranges along environmental gradients and the potential applicability of the MDE to better understand microbial diversity patterns.
  • Diversity and composition of tree species in mature stands along an altitudinal gradient on Mt. Fuji.
    Miyamoto Y, Nakano T, Nara K
    Mount Fuji Research 7 19 - 22 2013年 [査読無し][通常論文]
  • Yumiko Miyamoto, Hardy P. Griesbauer, D. Scott Green
    FOREST ECOLOGY AND MANAGEMENT 259 3 514 - 523 2010年01月 [査読有り][通常論文]
     
    This work aimed to compare radial growth-climate relationships among three coexisting coniferous tree species across a wide geographic and climate range from southern British Columbia (BC) to central Yukon, Canada. Tree-ring data were collected from 20 mature stands of white spruce (Picea glauca), lodgepole pine (Pinus contorta var. latifolia), and subalpine fir (Abies lasiocarpa). Linear relationships between annual growth variation and monthly and seasonal climate were quantified with correlation and regression analyses, and variation in climate-growth responses over a climatic gradient were quantified by regressing growth responses against local mean climatic conditions. Temperatures had more consistent and stronger correlations with growth for all three species than precipitation, but growth-climate responses varied among species and among sites. In particular, pine and fir populations showed different responses between BC and Yukon, whereas spruce showed a more consistent response across the study domain. Results indicate that (1) the response and sensitivity of trees to seasonal climate variables vary among species and sites and (2) winter temperatures prior to growth may have significant impacts on pine and fir growth at some sites. The capacity to adapt to climate change will likely vary among the study species and across climatic gradients, which will have implications for the future management of mixed-species forests in Yukon and BC. (C) 2009 Elsevier B.V. All rights reserved.

講演・口頭発表等

  • 北極圏森林境界の菌根宿主選択性  [通常講演]
    宮本裕美子, Maximov Trofim, 杉本 敦子
    第131回日本森林学会大会 2020年03月
  • 北東シベリア森林北限におけるカラマツ外生菌根菌の埋土胞子群集
    宮本裕美子, Maximov Trofim, 杉本 敦子
    菌根研究会2019年度大会 2019年11月 ポスター発表
  • Soil respiration responses to temperature and moisture in a taiga forest of eastern Siberia  [通常講演]
    Y.Miyamoto, H. Sato, A. Sugimoto, T.C. Maximov, A. Kononov
    Xth International Symposium on C/H2O/Energy balance and climate over boreal and arctic regions with special emphasis on eastern Eurasia, and Sustainable Development of the North 2019年10月 口頭発表(一般)
  • 東シベリア永久凍土上のダフリアカラマツ外生菌根菌群集と宿主特異性  [通常講演]
    宮本 裕美子, Kononov Alexander, Maximov Trofim, 杉本 敦子
    第130回日本森林学会大会 2019年03月 口頭発表(一般)
  • 気候変動と土壌微生物の種多様性  [招待講演]
    宮本裕美子
    第66回日本生態学会大会 2019年03月 口頭発表(招待・特別)
  • Climatic factors influencing soil respiration fluxes in a taiga forest of northeastern Siberia, revealed by 9 years of field measurements  [通常講演]
    Miyamoto Y, Kononov A, Maximov T, Sato H, Sugimoto A
    JpGU-AGU Joint Meeting 2018 2018年05月 ポスター発表
  • Potential impact of permafrost thaw on carbon dynamics in forest soils projected by a vertically stratified process-based model  [通常講演]
    Miyamoto Y, Sato H, Kononov A, Maximov T, Sugimoto A
    The 5th International Symposium on Arctic Research 2018年01月 ポスター発表
  • Potential impact of permafrost thaw on carbon dynamics in forest soils projected by a vertically stratified process-based model.  [通常講演]
    Miyamoto Y, Sato H, Kononov A, Sugimoto A, Maximov T
    International Conference on Cryopedology 2017年08月 口頭発表(一般)
  • Estimating carbon stock and greenhouse gas emissions from forest soils in the permafrost regions of northeastern Siberia.  [通常講演]
    Miyamoto Y, Sato H, Kononov A, Sugimoto A, Maximov T
    2017年05月 口頭発表(一般)
  • 亜熱帯から亜寒帯にかけての気温傾度にそった外生菌根菌分布と種多様性傾向  [通常講演]
    宮本裕美子
    2016年度 菌根研究会大会 2016年12月 口頭発表(一般)
  • Estimating soil carbon fluxes in the permafrost regions in Eastern Siberia.  [通常講演]
    Miyamoto Y, Sato H, Suzuki R, Sugimoto A
    IXth International Symposium C/H2O/Energy balance and climate over the boreal and Arctic regions with special emphasis on Eastern Eurasia. 2016年11月 口頭発表(一般)
  • Effects of permafrost thaw on carbon stock in Siberian forest soils.  [通常講演]
    Miyamoto Y
    Russian-Japanese Conference of Young Polar Scientists 2016年10月 口頭発表(一般)
  • Effects of climate change on biodiversity and carbon stocks in forest soils.  [通常講演]
    Miyamoto Y
    International Finnish-Japanese Conference of Early Carrier Arctic Scientists. 2016年10月 口頭発表(一般)
  • 隔離小集団の保全に向けた樹木共生菌群集と系統地理の解明:早池峰山アカエゾマツの事例.  [通常講演]
    宮本裕美子, 成松眞樹, 奈良一秀
    第127回日本森林学会大会 2016年03月 ポスター発表
  • 標高に沿った外生菌根菌埋土胞子構成種の分布と群集構造  [通常講演]
    宮本裕美子, 奈良一秀
    第126回日本森林学会大会 2015年03月 ポスター発表
  • 外生菌根菌群集に対する宿主樹木と気候の影響  [招待講演]
    宮本裕美子
    第62回日本生態学会大会 樹木生理自由集会 2015年03月 口頭発表(招待・特別)
  • 土壌微生物の種多様性 ―樹木共生菌の事例―  [通常講演]
    宮本裕美子
    平成26年度千葉県と連帯大学との研究成果発表会 大学・市民・行政の生物多様性保全の取組 2014年11月 ポスター発表
  • 天然林における外生菌根菌群集とその決定機構の解明  [通常講演]
    宮本裕美子, 酒井敦, 中野隆, 奈良一秀
    第125回日本森林学会大会 2014年03月 ポスター発表
  • 外生菌根菌の空間分布:冷温帯林における林分レベルの空間自己相関  [通常講演]
    宮本裕美子, 奈良一秀, 中野隆
    2013年度 菌根研究会大会 2013年11月 口頭発表(一般)
  • Diversity and community structure of ectomycorrhizal fungi along an altitudinal gradient on Mount Fuji.  [通常講演]
    Miyamoto Y, Nakano T, Nara K
    The 7th International Conference on Mycorrhiza 2013年01月 ポスター発表
  • 気候変動に対する北方針葉樹種3種の応答の比較  [通常講演]
    宮本裕美子, Green, DS
    第120回日本森林学会大会 2009年03月 口頭発表(一般)
  • Site- and species-specific radial growth responses to climate among three conifer species.  [通常講演]
    Miyamoto Y, Green DS
    The Northern Silviculture Committee Winter Workshop 2008年01月 口頭発表(一般)
  • Growth responses of three co-occurring conifers to climate change  [通常講演]
    Miyamoto Y, Green DS
    The Northern Silviculture Committee Winter Workshop 2007年01月 ポスター発表
  • Growth responses of three co-occurring northern conifers to climate near treelines.  [通常講演]
    Miyamoto Y, Green DS
    The Western Forest Genetic Association 51st Annual Meeting. 2006年06月 口頭発表(一般)

受賞

  • 2020年03月 日本森林学会 日本森林学会奨励賞


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