Updated on 2024/10/03

写真a

 
TAKAHASHI Sayaka
 
Organization
Research Field in Agriculture, Agriculture, Fisheries and Veterinary Medicine Area Faculty of Agriculture Department of Agriculture Assistant Professor
Title
Assistant Professor

Degree

  • 農学 ( 2015.3   京都大学 )

Research History

  • Faculty of Agriculture, Kagoshima University   Assistant Professor

    2024.3

Professional Memberships

  • 日本木材加工技術協会

    2024.5

  • The eDNA Society

    2020.9

  • International Association of Wood Anatomists

    2014.10

  • The Japan Wood Research Society

    2014

  • THE JAPANESE FOREST SOCIETY

    2004.10

  • THE ECOLOGICAL SOCIETY OF JAPAN

    2004.10

  • 日本水産学会

    2018.10 - 2019.9

  • 応用森林学会

    2004.10

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Papers

  • Takahashi S., Nishino Y .  Absorbed Energy of Wood in Impact Bending Test and the Relation with the Density and Dynamic Young's Modulus .  Wood Industry79 ( 10 ) 383 - 387   2024.7Absorbed Energy of Wood in Impact Bending Test and the Relation with the Density and Dynamic Young's ModulusReviewed

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    Authorship：Lead author   Language：Japanese   Publishing type：Research paper (scientific journal)  

  • Sayaka Takahashi, Shingo Takada, Hiroki Yamanaka, Reiji Masuda, Akihide Kasai .  Intraspecific genetic variability and diurnal activity affect environmental DNA detection in Japanese eel .  PLOS ONE16 ( 9 ) e0255576 - e0255576   2021.9Reviewed

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    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Public Library of Science (PLoS)  

    Environmental DNA (eDNA) analysis with species-specific primer/probe sets is promising as a tool to quantify fish abundance and distribution. Nevertheless, several factors could reduce the accuracy of this method. Here, we aimed to analyze whether intraspecific variability and diel activity rhythm affect eDNA detection in Japanese eels (Anguilla japonica). For this purpose, we performed tank experiments focusing on two points. First, we assessed the effects of base pair sequences with probe region polymorphism on eDNA detection. Next, we evaluated the influences of diel rhythm, activity, and individual differences in eDNA release rate on eDNA concentration. We examined the base pair sequences of the probe regions of 20 individuals and found genetic mismatches in two of them. The eDNA concentration was estimated to be much lower in these variants than it was in the other individuals. We conducted a rearing experiment on four non-variant individuals to explore the influences of diel activity and inter-individual differences in eDNA detection. Nocturnal eel activity was reflected in the eDNA detection but the inter-individual differences remained large. The observed weak positive correlations between eDNA concentration and activity suggest that eDNA emission is highly dependent on basal metabolism. The present study suggests that consideration of polymorphic sites at the probe region and diel activity rhythms should improve the accuracy and precision of abundance estimation through eDNA. Such fine-tuning is applicable not only for eels but also for other fishes to be targeted by eDNA technology.

    DOI： 10.1371/journal.pone.0255576

  • Sayaka Takahashi, Erina Takahashi .  Relationship between vessel formation and seasonal changes in leaf area of evergreen and deciduous species with different vessel arrangements .  Plants10 ( 1 ) 100 - 100   2021.1Invited Reviewed

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    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：MDPI AG  

    To discuss the diversity of morphological traits and life strategies of trees, the functional relationship between leaf expansion and vessel formation must be clarified. We compared the temporal relationship among tree species with different leaf habits and vessel arrangements. Twigs, leaves, and trunk core samples were periodically acquired from 35 sample trees of nine species in a temperate forest in Japan. We quantitatively estimated leaf expansion using a nonlinear regression model and observed thin sections of twigs and trunks with a light microscope. Almost all of the first-formed vessels in twigs, which formed adjacent to the annual ring border, were lignified with a leaf area between 0% and 70% of the maximum in all species. The first-formed vessels in trunks lignified between 0% and 95% of the maximum leaf area in ring-porous deciduous Quercus serrata and ring-(radial-)porous evergreen Castanopsis cuspidate. Their lignification occurred earlier than in diffuse-porous deciduous Liquidambar styraciflua, diffuse-porous evergreen Cinnamomum camphora and Symplocos prunifolia, and radial-porous evergreen Quercus glauca and Quercus myrsinifolia. The timing varied in semi-ring-porous deciduous Acanthopanax sciadophylloides and diffuse-porous evergreen Ilex pedunculosa. The observed differences in the timing of vessel formation after leaf appearance were reflected in their differing vessel porosities and were connected to the different life strategies among tree species.

    DOI： 10.3390/plants10010100

  • Sayaka Takahashi, Erina Takahashi .  Fitting Richards’ growth function to estimate seasonal changes in leaf area in jolcham oaks, Quercus serrata, and American sweetgum trees, Liquidambar styraciflua .  Applied Forest Science29 ( 2 ) 1 - 8   2020.8Reviewed

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    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (bulletin of university, research institution)  

    Research on the functional relationship between leaves and conductive tissues of trees is very important, as it can lead to new knowledge on tree growth and life. Although previous studies have examined leaf expansion qualitatively, quantitative estimation of leaf expansion plays an important role in analysis of physiological leaf phenology. So far, three curves, namely the Mitscherlich, logistic, and Gompertz curves have been applied to best fit the time course of leaf expansion, while Richards’ growth function has not been previously evaluated. This function has five parameters (A, k, b, m, and t0), and comprises the above mentioned three types of curves which differ regarding the ‘m’ parameter. This study aimed to estimate time courses of changes in leaf area using Richards’ growth function and to develop leaf expansion model, which can be used in common without depending on a difference of tree ring porosities. Leaves were sampled periodically from ring-porous jolcham oaks, Quercus serrata, and from diffuse-porous American sweetgum trees, Liquidambar styraciflua, both of which grow in temperate forests. Richards’ growth function was able to describe seasonal changes in leaf area in both species, and an asymmetrical function of the Gompertz was suitable for them. We suggest that Richards’ growth function can be used to estimate leaf area time courses without concern about the curve type, and can further be used to calculate leaf expansion quantitatively.

    DOI： 10.20660/applfor.29.2_1

  • Takahashi, Sayaka, Masayuki K. Sakata, Toshifumi Minamoto, Reiji Masuda .  Comparing the efficiency of open and enclosed filtration systems in environmental DNA quantification for fish and jellyfish .  PLOS ONE15 ( 4 ) e0231718 - e0231718   2020.4Reviewed

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    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    Water sampling and filtration of environmental DNA (eDNA) analysis have been performed by several different methods, and each method may yield a different species composition or eDNA concentration. Here, we investigated the eDNA of seawater samples directly collected by SCUBA to compare two widely used filtration methods: open filtration with a glass filter (GF/F) and enclosed filtration (Sterivex). We referred to biomass based on visual observation data collected simultaneously to clarify the difference between organism groups. Water samples were collected at two points in the Sea of Japan in May, September and December 2018. The respective samples were filtered through GF/F and Sterivex for eDNA extraction. We quantified the eDNA concentration of five fish and two cnidarian species by quantitative polymerase chain reaction (qPCR) using species-specific primers/probe sets. A strong correlation of eDNA concentration was obtained between GF/F and Sterivex; the intercepts and slopes of the linear regression lines were slightly different in fish and jellyfish. The amount of eDNA detected using the GF/F filtration method was higher than that detected using Sterivex when the eDNA concentration was high; the opposite trend was observed when the eDNA concentration was relatively low. The concentration of eDNA correlated with visually estimated biomass; eDNA concentration per biomass in jellyfish was approximately 700 times greater than that in fish. We conclude that GF/F provides an advantage in collecting a large amount of eDNA, whereas Sterivex offers superior eDNA sensitivity. Both filtration methods are effective in estimating the spatiotemporal biomass size of target marine species.

    DOI： 10.1371/journal.pone.0231718

  • Sayaka Takahashi, Erina Takahashi .  Timing of vessel formation in twigs and trunks in relation to porosity and leaf flushing .  IAWA J.37 ( 1 ) 16 - 27   2016.3Reviewed

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    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    In order to understand the coordination of leaf phenology and functional xylem anatomy, the timing of vessel wall lignification in twigs and stems in relation to leaf appearance was studied in nine species with different porosity patterns. Cylindrical stem cores and twigs were collected from early spring through late summer from deciduous (Quercus serrata, Liquidambar styraciflua, and Acanthopanax sciadophylloides), and evergreen (Castanopsis cuspidata; Cinnamomum camphora, Ilex pedunculosa, Symplocos prunifolia, Quercus glauca and Quercus myrsinifolia) species in a temperate forest. The first-formed twig vessels lignified at the time of leaf appearance or before in all species. The timing of stem vessel lignification in relation to leaf appearance in semi-ringporous deciduous species was overlapping with that of ring-porous deciduous species and diffuse-porous deciduous species. Evergreen species showed a great variation in the timing of stem vessel lignification, relative to leaf flushing. The main conclusions are that 1) Vessel lignification occurs much earlier in twigs than in trunks of the same trees, with hardly any overlap between the two; 2) Deciduous trees do not differ much from evergreen species, but there is a weak tendency for evergreen species to have later vessel differentiation than deciduous species; 3) The timing of vessel formation shows little relation with porosity patterns and overlaps between diffuse-porous and ring-porous species. This suggests a much greater intergradation of timing of vessel formation in species of different porosity pattern in evergreen and deciduous species than recognized in the literature.

    DOI： 10.1163/22941932-20160118

  • 高橋絵里奈、高橋さやか、竹内典之 .  樹冠測定具「天望鏡（てんぼうきょう）」の開発とその正確度ならびに精度の1事例 .  森林応用研究24 ( 2 ) 29 - 33   2015.8Reviewed

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    Language：Japanese   Publishing type：Research paper (bulletin of university, research institution)  

    DOI： 10.20660/applfor.24.2_29

  • Sayaka Takahashi, Naoki Okada, Tadashi Nobuchi .  Relationship between vessel porosity and leaf emergence pattern in ring- and diffuse-porous deciduous trees in a temperate hardwood forest .  Botany93 ( 1 ) 31 - 39   2014.10Reviewed

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    To elucidate the functional relationship between intra-annual variations in vessel diameter and leaf emergence pattern of ring-porous and diffuse-porous deciduous trees in temperate forests, we determined the temporal relationships between leaf phenology and vessel formation. Cylindrical stem cores were periodically collected from each of five ring- and diffuse-porous species, and the leaf and vessel formation were observed simultaneously. In the ring-porous species, vessel formation began within 2 weeks of leaf appearance, and most wide vessels were formed within 2 weeks of full leaf expansion. More of the trees with intermediate-type formed medium-sized vessels or sparse wide vessels than trees with the flush-type leaf emergence, especially between full leaf expansion and the end of shoot elongation. Narrow vessel formation began 2–8 weeks after full leaf expansion in all specimens. The transition between the pore- and non-pore zones was abrupt in the flush-type species, and gradual in the intermediate-type species. In contrast, diffuse-porous species formed vessels 0–8 weeks after full leaf expansion. Our findings suggest that ring-porous species form leaves and vessels synchronously to accommodate water transport requirements, whereas diffuse-porous species form these tissues asynchronously; thus, unlike the latter type, the former species change vessel diameters according to leaf formation.

    DOI： 10.1139/cjb-2014-0129

  • Sayaka Takahashi, Naoki Okada, Tadashi Nobuchi .  Relationship between the timing of vessel formation and leaf phenology in ten ring-porous and diffuse-porous deciduous tree species .  Ecological Research28 ( 4 ) 615 - 624   2013.5Reviewed

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    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    The goal of this study is to clarify how different aspects of plant function are coordinated developmentally for species of ring-porous versus diffuse-porous deciduous trees, comparing the timing of leaf phenology and vessel formation in twigs and stems from an ecophysiological viewpoint. Cylindrical stem cores and twigs were collected at intervals from early spring through summer from five ring-porous and five diffuse-porous species in a cool temperate forest, and leaf and vessel formation were observed simultaneously. We found that the first-formed vessels of the year were lignified in twigs around the time of leaf appearance and at or before full leaf expansion of each tree in both groups of species with flush-leaves. Vessels in stems were lignified 2 weeks before to 4 weeks after leaf appearance and before or around full leaf expansion of the tree in ring-porous species. This was significantly earlier than in diffuse-porous species, in which stem vessel lignification was 2–8 weeks after leaf appearance and at or after full leaf expansion of the tree. The timing of vessel formation in twigs compared to stems was significantly earlier in ring-porous species than in diffuse-porous species. Lignification of vessels in stems occurred within 2 weeks of lignification in the twigs of ring-porous species and 2–8 weeks after lignification in twigs of diffuse-porous species. These results indicate the order and time-lag of leaf and vessel formation. Ring-porous species showed intensive leaf/vessel production, whereas diffuse-porous species showed less intensive leaf/vesse production.

    DOI： 10.1007/s11284-013-1053-x

  • 高橋絵里奈、高橋さやか、柳本順、柳直文、佐藤修一、古本浩望、竹内典之 .  エゾシカ防除柵内外のササ桿数の推移と実生の消長　－京都大学フィールド科学教育研究センター北海道研究林白糠区における10年間の推移－ .  日本森林学会北海道支部論文集57   41 - 43   2009.2Reviewed

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    Language：Japanese   Publishing type：Research paper (bulletin of university, research institution)  

    DOI： 10.24494/jfsha.57.0_61

  • Sayaka Takahashi, Naoki Okada, Tadashi Nobuchi .  Examination of wood sampling method with an increment borer: An investigation of seasonal changes in vessel formation .  Forest research, Kyoto77   123 - 128   2008.12Reviewed

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    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (bulletin of university, research institution)  

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Books

  • 4.2.3 樹勢回復における根の力 In 小池孝良・塩尻かおり・中村誠宏・鎌田直人（編）『木本植物の被食防衛－変動環境下でゆらぐ植食者との関係－』

    高橋さやか, 高橋絵里奈（ Role： Contributor）

    共立出版株式会社  2023.3  （ ISBN:9784320058408 ）

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    Total pages：272   Responsible for pages：189-192   Language：Japanese Book type：Scholarly book

  • コラム5.4 環境DNAを利用した「食うー食われる」関係解明の可能性 In 小池孝良・塩尻かおり・中村誠宏・鎌田直人（編）『木本植物の被食防衛－変動環境下でゆらぐ植食者との関係－』

    高橋さやか（ Role： Contributor）

    共立出版株式会社  2023.3  （ ISBN:9784320058408 ）

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    Total pages：272   Responsible for pages：217-218   Language：Japanese Book type：Scholarly book

  • コラム4.2.3 Shigoの隔室化理論 In 小池孝良・塩尻かおり・中村誠宏・鎌田直人（編）『木本植物の被食防衛－変動環境下でゆらぐ植食者との関係－』

    高橋さやか（ Role： Contributor）

    共立出版株式会社  2023.3  （ ISBN:9784320058408 ）

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    Total pages：272   Responsible for pages：192-193   Language：Japanese Book type：Scholarly book

  • コラム3.2.2 年輪に刻まれた北方林の厳しい環境と虫害の記録 In 小池孝良・塩尻かおり・中村誠宏・鎌田直人（編）『木本植物の被食防衛－変動環境下でゆらぐ植食者との関係－』

    高橋さやか, 高橋絵里奈（ Role： Contributor）

    共立出版株式会社  2023.3  （ ISBN:9784320058408 ）

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    Total pages：272   Responsible for pages：126-128   Language：Japanese Book type：Scholarly book

  • コラム4 葉っぱを支える幹のひみつ In 小池孝良（編）『森林美学への旅～ザーリッシュの森をもとめて～』

    高橋さやか（ Role： Contributor）

    海青社  2021.11  （ ISBN:9784860993900 ）

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    Total pages：206   Responsible for pages：61-64   Language：Japanese Book type：Scholarly book

  • コラム6.1 広葉樹多種の肥大成長の特徴 In 小池孝良・北尾光俊・市栄智明・渡辺 誠（編）『木本植物の生理生態』 Reviewed

    高橋さやか（ Role： Contributor）

    共立出版株式会社  2020.11  （ ISBN:9784320058125 ）

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    Total pages：262   Responsible for pages：99-101   Language：Japanese Book type：Scholarly book

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MISC

  • 落葉広葉樹の葉の展開と道管の形成時期の関係―樹木の適応様式の違いを探る―

    高橋さやか

    森林技術   887   28 - 31   2016.1

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    Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (scientific journal)   Publisher：日本森林技術協会  

Presentations

  • 高橋絵里奈, 高橋さやか   年輪幅が揃った良質材生産のための密度管理と個体の専有面積  

    第134回日本森林学会大会  2023.3 

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    Event date： 2023.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：鳥取（オンライン開催）  

  • 高橋絵里奈, 佐藤玲音, 高橋さやか   低密度植栽に対する島根県内の森林組合の意向と今後の課題  

    第71回応用森林学会大会  2021.11 

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    Event date： 2021.11

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：京都（オンライン開催）  

  • 高橋さやか、倉地奈保子、高橋絵里奈   カナダの北方林に生育するポプラの幹に凍害年輪が発生する気温条件  

    第71回応用森林学会大会  2020.11 

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    Event date： 2020.11

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：奈良（オンライン開催）  

  • Genetic variability on probe region and diurnal activity affect environmental DNA detection in Japanese eel  

    2020.11 

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    Event date： 2020.11

    Presentation type：Poster presentation  

  • 高橋さやか、倉地奈保子、高橋絵里奈   カナダに生育するポプラの幹に発生する傷害組織からわかる成長のはやさの高さ方向の違い  

    第70回応用森林学会大会  2019.9 

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    Event date： 2019.9

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：山口  

  • 高橋さやか、倉地奈保子、高橋絵里奈、大澤晃   カナダの亜寒帯林北部におけるポプラの幹の凍害年輪と気温との関係  

    第66回日本生態学会大会  2019.3 

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    Event date： 2019.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：兵庫  

  • 高橋さやか、高橋絵里奈   リチャーズ成長関数を適用した葉面積の経時変化と道管形成との関係　―環孔材樹種コナラと散孔材樹種モミジバフウとの比較―  

    第69回応用森林学会大会  2018.11 

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    Event date： 2018.11

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：広島  

  • 高田真悟、高橋さやか、益田玲爾、笠井亮秀   水温と塩分がニホンウナギの環境 DNA 放出量に及ぼす影響  

    2018年度水産海洋学会研究発表大会  2018.11 

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    Event date： 2018.11

    Language：Japanese   Presentation type：Poster presentation  

    Venue：東京  

  • 高橋絵里奈、高橋さやか   葉面積の経時変化へのリチャーズ成長関数の適応  

    第69回応用森林学会大会  2018.11 

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    Event date： 2018.11

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：広島  

  • Synchronicity between the timing of leaf opening and the timing of vessel formation on twigs and stem in Fagus crenata and Quercus acutissima  

    The 65th Annual Meeting of the Ecological Society of Japan  2018.3 

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    Event date： 2018.3

    Language：English   Presentation type：Oral presentation (general)  

  • 高橋さやか、村上弘章、笹野祥愛、尾形瑞紀、益田玲爾   マアジの環境DNA放出量におよぼす給餌，ストレスおよび個体差の影響  

    平成30年度公益社団法人日本水産学会春季大会  2018.3 

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    Event date： 2018.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：東京  

  • 高橋さやか、高橋絵里奈   開葉時期と枝の道管形成時期の同調性－京都大学上賀茂試験地のタマミズキの事例－  

    第68回応用森林学会大会  2017.11 

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    Event date： 2017.11

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：香川  

  • 高橋絵里奈、高橋さやか、竹内典之   リチャーズ成長関数を用いた吉野林業地における樹木個体の胸高直径の成長解析  

    第127回日本森林学会大会  2016.3 

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    Event date： 2016.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：神奈川  

  • 高橋さやか、高橋絵里奈   管孔性の違いが開葉時期を基準にした幹の道管形成時期に与える影響  

    第66回応用森林学会大会  2015.10 

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    Event date： 2015.10

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：岡山  

  • 高橋絵里奈、米康充、宗村広昭、佐藤利夫、森也寸志、井手淳一郎、高橋さやか、竹内典之   リチャーズ成長関数を用いた島根県隠岐の島町のスギ人工林における間伐時期と伐採木選定の検討  

    第66回応用森林学会大会  2015.10 

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    Event date： 2015.10

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：岡山  

  • 高橋さやか、高橋絵里奈、岡田直紀、野渕正   異なる道管配列の広葉樹における枝と幹の道管形成と開葉時期との関係  

    第65回日本木材学会大会  2015.3 

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    Event date： 2015.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：東京  

  • 高橋絵里奈、高橋さやか、竹内典之   樹冠測定具「天望鏡（てんぼうきょう）」の測定精度の検討  

    第126回日本森林学会大会  2015.3 

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    Event date： 2015.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：北海道  

  • 高橋さやか、高橋絵里奈、岡田直紀、野渕正   広葉樹の枝と幹の道管形成と開葉時期との関係  

    第126回日本森林学会大会  2015.3 

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    Event date： 2015.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：北海道  

  • 高橋さやか、高橋絵里奈、岡田直紀   9樹種の温帯広葉樹における開葉時期と枝および幹の道管形成時期との関係 ―落葉性および常緑性の異なる管孔性を持つ樹種間での比較―  

    第62回日本生態学会大会  2015.3 

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    Event date： 2015.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：鹿児島  

  • 高橋さやか、岡田直紀、野渕正   温帯林における落葉性環孔材樹種の道管配列と開葉型との関係  

    第65回応用森林学会大会  2014.11 

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    Event date： 2014.11

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：京都  

  • 高橋さやか、岡田直紀、野渕正   温帯落葉広葉樹の道管配列と開葉型の関係  

    第58回日本生態学会  2011.3 

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    Event date： 2011.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：北海道  

  • 高橋さやか、岡田直紀、野渕正   10種の冷温帯落葉広葉樹における道管形成時期と葉のフェノロジーとの関係－環孔材樹種と散孔材樹種との適応戦略の違い－  

    第122回日本森林学会  2011.3 

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    Event date： 2011.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：静岡  

  • 高橋さやか、岡田直紀、野渕正   冷温帯落葉広葉樹の枝、樹幹の道管形成時期および開葉時期　―環孔材樹種と散孔材樹種との比較―  

    第61回日本森林学会関西支部日本森林技術協会関西・四国支部連合会合同大会  2010.10 

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    Event date： 2010.10

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：島根  

  • 高橋さやか、高橋絵里奈、倉地奈保子、大澤晃   北西カナダの北方林におけるポプラの樹幹凍害発生パターン  

    第120回日本森林学会  2009.3 

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    Event date： 2009.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：京都  

  • 高橋さやか   落葉広葉樹における通水性と葉のフェノロジーの関係  

    第55回日本生態学会　企画集会  2008.3 

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    Event date： 2008.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：福岡  

  • 高橋さやか、岡田直紀   常緑および落葉広葉樹の道管形成とフェノロジーの関係  

    第54回日本生態学会  2007.3 

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    Event date： 2007.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：愛媛  

  • 高橋さやか、野渕正、岡田直紀   落葉広葉樹における水分通導器官の形成とフェノロジーの関係  

    第53回日本生態学会  2006.3 

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    Event date： 2006.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：新潟  

  • Sayaka Takahashi, Tadashi Nobuchi, Naoki Okada   Vessel formation and phenology of ten deciduous broad-leaved trees –A comparison between ring-porous and diffuse-porous species–   International conference

    The Sixth Pacific Region Wood Anatomy Conference  2005.12 

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    Event date： 2005.12

    Language：English   Presentation type：Poster presentation  

    Venue：Kyoto  

  • 高橋さやか、野渕正、岡田直紀   9種の落葉広葉樹における道管形成とフェノロジーの関係－環孔材と散孔材との比較－  

    第52回日本生態学会  2005.3 

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    Event date： 2005.3

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：大阪  

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Awards

  • Ecological Research Award 2013

    2014.3   The Ecological Society of Japan   Relationship between the timing of vessel formation and leaf phenology in ten ring-porous and diffuse-porous deciduous tree species

    Sayaka Takahashi, Naoki Okada, Tadashi Nobuchi

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    Award type：International academic award (Japan or overseas) 

Research Projects

  • 空気サンプルの環境DNA解析を用いた動植物の季節変化

    Grant number：24K08985  2024.4 - 2027.3

    日本学術振興会  科学研究費補助金　基盤研究（C） 

    高橋さやか

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    Authorship：Principal investigator  Grant type：Competitive

    Grant amount：\3600000

  • 樹冠における開葉時期の差異が枝と幹の道管形成に与える影響

    Grant number：17H00448  2017.4 - 2018.3

    日本学術振興会  科学研究費補助金　奨励研究 

    高橋さやか

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    Authorship：Principal investigator  Grant type：Competitive

    Grant amount：\550000

 

Teaching Experience

  • 木質工学

    2024.4
    -
    2024.8
    Institution：鹿児島大学

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    Level：Undergraduate (specialized)