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(Faculty Division of Natural Sciences Research Group of Biological Sciences)｜Researchers' Profile Teacher performance management system

Katano Izumi

Faculty Division of Natural Sciences Research Group of Biological SciencesProfessor
Last Updated :2025/06/13

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Profile Information

  • Name (Japanese)

    Katano

  • Name (Kana)

    Izumi

Degree

  • Nara Women's University, Mar. 2004

Research Interests

  • freshwater, inland water, articficial pond, macroinvertebrates, foodweb, dam

Research Areas

  • Life sciences, Ecology and environmental science, macroinvertebrate, aquatic insect, caddisfly, river ecosystems, foodweb, prey-predator interation
  • Environmental science/Agricultural science, Environmental impact assessment, river, stream, dam, artificial pond, environmental DNA

Research History

  • Apr. 2023 - Present, Nara Women's University, Faculty, Division of Natural Science, Professor
  • Apr. 2016 - Mar. 2023, Nara Women's University, Faculty Division of Natural Sciences, Associate Professor
  • Apr. 2011 - Mar. 2016, University of Hyogo, School of Human Science and Environment Department of Human Science and Environment, Associate Professor
  • Apr. 2009 - Mar. 2011, Carl-von-Ossietzky University Oldenburg, Institute for Chemistry and Biology of the Marine Environment, Post Doctoral Fellow
  • Apr. 2005 - Mar. 2009, Pubric Works Research Institute, Aqua Restoration Research Center, Post Doctoral Fellow
  • Apr. 2004 - Apr. 2005, Nara Women's University, KYOUSEI Science Research Center, Post Doctoral Fellow

Teaching Experience

  • Apr. 2024 - Present
  • Apr. 2024 - Present
  • Oct. 2023 - Present
  • Fieldwork in Riverine Biology, Nara Women's University, Apr. 2020 - Present
  • Applied ecology 2, Nara Women's University, Apr. 2017 - Present
  • Excersices of applied ecology 2, Nara Women's University, Apr. 2017 - Present
  • Excersices of applied ecology 1, Nara Women's University, Apr. 2017 - Present
  • Applied ecology (Applied ecology 1), Nara Women's University, Apr. 2017 - Present
  • Exercises in Applied Ecology, Nara Women's University, Apr. 2017 - Present
  • Practical English of Biological and Environmental Sciences, Nara Women's University, Apr. 2017 - Present
  • Special topics in inland waterl ecology, Nara Women's University, Apr. 2016 - Present
  • Seminor of inland water ecology 2, Nara Women's University, Apr. 2016 - Present
  • Seminor of inland water ecology 1, Nara Women's University, Apr. 2016 - Present
  • Exercise of inland water ecology 4, Nara Women's University, Apr. 2016 - Present
  • Exercise of inland water ecology 3, Nara Women's University, Apr. 2016 - Present
  • Exercise of inland water ecology 2, Nara Women's University, Apr. 2016 - Present
  • Exercise of inland water ecology 1, Nara Women's University, Apr. 2016 - Present
  • Special Topics in Applied Ecology, Nara Women's University, Apr. 2016 - Present
  • Practice of Animal Morphology and Classification, Nara Women's University, Apr. 2016 - Present
  • Practice of Environmental Biology, Nara Women's University, Apr. 2016 - Present
  • Special Topic of Biology and Environmental Science 4, Nara Women's University, Apr. 2016 - Present
  • Deployment practice, Nara Women's University, Apr. 2016 - Present
  • Ecology, Nara Women's University, Apr. 2016 - Present

Social Activities

  • 21 Aug. 2022 - Present
  • May 2015 - Present
  • 07 Oct. 2023
  • Jun. 2023
  • 23 Nov. 2019
  • Aug. 2013 - Aug. 2019
  • Oct. 2017
  • May 2017
  • Jul. 2014
  • Jun. 2011
  • Aug. 2007
  • Jul. 2007
  • Oct. 2006
  • Oct. 2005
  • Jul. 2005
  • Aug. 2004
  • Aug. 2003
  • Aug. 2002
  • Nov. 2001

Media Coverage

  • 貯水ダムが止めた土砂を下流に供給「土砂還元」で生物相は豊かになる, Other than myself, つり人社, サカナと水辺と森と希望，浦壮一郎 著, 01 Apr. 2024, インタビュー記事，pp. 309-318., Others
  • プロフェッショナルたちの挑戦・サカナにやさしい水辺の未来 第48回 片野泉さん「ダム下流の深刻な粗粒化とその改善策」, 月刊つり人4月号, 25 Feb. 2022, p166-170, Paper
  • 「置き土」に川の環境改善：ダム湖の土砂還元，下流域の生物多様化, 朝日新聞, 03 Sep. 2021, Paper
  • 教えて！理科子先生「ダム 川の生き物守れるの？」, 読売新聞, 01 Jul. 2021, Paper
  • 奈良女子大など、ダム堆砂の還元による生態系回復効果などを評価, 国立研究開発法人 国立環境研究所, 環境展望台, Apr. 2021, https://tenbou.nies.go.jp/news/jnews/detail.php?i=31605, Internet
  • ダム下流の劣化した河川環境と生態系を同時に回復させる「土砂還元」, 大学ジャーナルOnline, Apr. 2021, https://univ-journal.jp/90803/, Internet
  • Yamamichi M, Kazama T, Tokita K, Katano I, Doi H, Yoshida T, Hairston Jr NG, Urabe J. (2018) A shady phytoplankton paradox: when phytoplankton increases under low light. Proc. R. Soc. B 285: 20181067., https://www.c.u-tokyo.ac.jp/info/news/topics/files/20180703yamamichisoubun1.pdf, 03 Jul. 2018, Yamamichi M, Kazama T, Tokita K, Katano I, Doi H, Yoshida T, Hairston Jr NG, Urabe J. (2018) A shady phytoplankton paradox: when phytoplankton increases under low light. Proc. R. Soc. B 285: 20181067., Internet, 30549265, rm:research_project_id
    対象リソースIRI
  • Doi H, Akamatsu Y, Watanabe Y, Goto M, Inui R, Katano I, Nagano M, Takahara T, Minamoto T. (2017) Water sampling for environmental DNA surveys by using an unmanned aerial vehicle. Limnology and Oceanography Methods 15: 933-944., https://research-er.jp/articles/view/64041, 18 Oct. 2017, Doi H, Akamatsu Y, Watanabe Y, Goto M, Inui R, Katano I, Nagano M, Takahara T, Minamoto T. (2017) Water sampling for environmental DNA surveys by using an unmanned aerial vehicle. Limnology and Oceanography Methods 15: 933-944., Internet
  • Doi H, Katano I, Sakata Y, Souma R, Kosuge T, Nagano M, Ikeda K, Yano K, Tojo K. (2017) Detection of and endangered aquatic heteropteran using environmental DNA in a wetland ecosystem. Royal Society Open Science 4: 170568., 建設通信新聞DIGITAL, Kensetsunews.com, 03 Aug. 2017, Doi H, Katano I, Sakata Y, Souma R, Kosuge T, Nagano M, Ikeda K, Yano K, Tojo K. (2017) Detection of and endangered aquatic heteropteran using environmental DNA in a wetland ecosystem. Royal Society Open Science 4: 170568., Internet
  • Doi H, Katano I, Sakata Y, Souma R, Kosuge T, Nagano M, Ikeda K, Yano K, Tojo K. (2017) Detection of and endangered aquatic heteropteran using environmental DNA in a wetland ecosystem. Royal Society Open Science 4: 170568., 建設工業新聞, 01 Aug. 2017, Doi H, Katano I, Sakata Y, Souma R, Kosuge T, Nagano M, Ikeda K, Yano K, Tojo K. (2017) Detection of and endangered aquatic heteropteran using environmental DNA in a wetland ecosystem. Royal Society Open Science 4: 170568., Paper, 30549264, rm:research_project_id
    対象リソースIRI
  • Katano I, Harada K, Doi H, Souma R, Minamoto T. (2017) Environmental DNA method for estimating salamander distribution in headwater streams, and a comparison of water sampling methods. PLOS One, 12: e0176541., 読売新聞社, 読売新聞 奈良版, 23 Jul. 2017, Katano I, Harada K, Doi H, Souma R, Minamoto T. (2017) Environmental DNA method for estimating salamander distribution in headwater streams, and a comparison of water sampling methods. PLOS One, 12: e0176541., Paper, 30549264, rm:research_project_id
    対象リソースIRI
  • Doi H, Katano I, Sakata Y, Souma R, Kosuge T, Nagano M, Ikeda K, Yano K, Tojo K. (2017) Detection of and endangered aquatic heteropteran using environmental DNA in a wetland ecosystem. Royal Society Open Science 4: 170568.., https://research-er.jp/articles/view/60753, 20 Jul. 2017, Doi H, Katano I, Sakata Y, Souma R, Kosuge T, Nagano M, Ikeda K, Yano K, Tojo K. (2017) Detection of and endangered aquatic heteropteran using environmental DNA in a wetland ecosystem. Royal Society Open Science 4: 170568.., Internet, 30549334;30549264, rm:research_project_id
    対象リソースIRI
  • キラリ リーディングウーマン 第12回出演 片野泉准教授, Myself, サンテレビ, キラリけいざい, 18 Oct. 2015, Media report
  • Doi H, Katano I, Negishi JN, Sanada S, Kayaba Y. (2013) Effects of biodiversity, habitat structure and water quality on recreational use of rivers, Ecosphere, 4, art 102.http://dx.doi.org/10.1890/ES12-00305.1, マイナビニュース, 27 Aug. 2013, Doi H, Katano I, Negishi JN, Sanada S, Kayaba Y. (2013) Effects of biodiversity, habitat structure and water quality on recreational use of rivers, Ecosphere, 4, art 102.http://dx.doi.org/10.1890/ES12-00305.1, Internet
  • Doi H, Katano I, Negishi JN, Sanada S, Kayaba Y. (2013) Effects of biodiversity, habitat structure and water quality on recreational use of rivers, Ecosphere, 4, art 102.http://dx.doi.org/10.1890/ES12-00305.1, Myself, 神戸新聞社, 神戸新聞, 24 Aug. 2013, Doi H, Katano I, Negishi JN, Sanada S, Kayaba Y. (2013) Effects of biodiversity, habitat structure and water quality on recreational use of rivers, Ecosphere, 4, art 102.http://dx.doi.org/10.1890/ES12-00305.1, Paper

■Ⅱ．研究活動実績

Published Papers

  • Refereed, Limnological Study 10/11: 3-13., The persistent effect of sediment replenishment on the streambed environment and macroinvertebrate community downstream of the dam, Feb. 2025, 10/11, 3, 13, Scientific journal
  • Refereed, Dec. 2024, 81, 16, 24-16130, Scientific journal
  • Refereed, Consideration of physical and biological environment changes in anticipation of sediment replenishment downstream of Futatsuno Dam in Japan., Iseki H; Okamoto N; Tabuchi N; Ichiyanagi H; Katano I; Morimoto K, Sep. 2024, in press, International conference proceedings
  • Refereed, Limnology, Springer Science and Business Media LLC, Seasonal changes in the diurnal behavior of Chimarrogale platycephalus evaluated using environmental DNA, Nao Shiozuka; Izumi Katano; Hideyuki Doi; Masatoshi Nakamura; Tomoyasu Shirako; Shun Nagayama; Hidetaka Ichiyanagi, 31 Aug. 2024, 26, 45, 54, Scientific journal, 10.1007/s10201-024-00760-x
    URLDOI URL
  • Refereed, River Research and Applications, Wiley, Tributary mitigates river discontinuity by dam depending on the distance from dam to the tributary confluence, Izumi Katano; Hideyuki Doi; Junjiro N. Negishi; Tomoko Minagawa; Yuichi Kayaba, Abstract

    River ecosystems host a continuum of various discontinuities, such as dams and tributary inflows, which shape the habitats of aquatic organisms; this makes it important to evaluate the interactions among discontinuities and effects of a single discontinuity point. Herein, we focused on tributaries in dammed rivers to elucidate a manner to mediate discontinuities and hypothesized that the effects of the tributary inflow on the downstream river were mediated by the (1) distance between the dam and tributary inflow, (2) size ratio between the dam and tributary, and (3) ability of the tributary to transport fine sediments, such as sand and gravel. We conducted field investigations to measure 24 environmental factors, including the water column, riverbed, and river topography, along eight dammed rivers to test the three hypotheses. Only five factors differed significantly between the upstream and downstream sites of the tributary confluence, whereas 12 factors differed significantly between the tributary and mainstem. We also classified the variation pattern using principal component analysis (PCA). The correlation between each PCA axis and environmental factors suggests that the modifications of the water quality factors by tributary inflow were significantly correlated with the distance between the dam and the tributary inflow, and that the flux of various riverbed factors, that is, was significantly correlated with the ability to resupply of fine riverbed sediments by the tributary. Overall, tributary‐inflow downstream of a dam has the potential to be applicable in environmental restoration, especially in terms of resupplying fine sediment., Feb. 2024, 40, 2, 163, 176, Scientific journal, 10.1002/rra.4221
    URLDOI URL
  • Refereed, Proceedings of the 40th IAHR World Congress (Vienna, 2023), Offset discontinuities in dammed rivers due to tributary: which macroinvertebrates taxa respond?, Katano I; Doi H; Hara N; Negishi JN; Minagawa T; Kayaba Y, Dec. 2023, 29774, International conference proceedings
  • Refereed, Environmental DNA, Wiley, Applicability of environmental DNA metabarcoding for the hyporheic zone of a stream bed, Aki Tanaka; Izumi Katano; Hideyuki Doi; Mami Iguchi; Shohei Koike, Abstract

    Hyporheic zones play a crucial role in ecological processes primarily orchestrated by hyporheic organisms, known as hyporheos. Our understanding of riverine biodiversity, encompassing hyporheic zones, remains limited. Therefore, the development of a method for the facile and accurate detection of hyporheic communities is imperative. Thus, we evaluated the applicability of environmental DNA (eDNA) metabarcoding surveys in the hyporheic zone in a small stream in Japan. We conducted simultaneous direct sampling and eDNA surveys at two different locations (head and tail of a rapid and a bar) and during two different seasons (less and more disturbed periods). Subsequently, we compared the outcomes of these sampling methods, locations, and seasons. Through eDNA metabarcoding targeting the cytochrome‐c oxidase subunit I (COI) regions, we successfully identified a diverse array of hyporheic and benthic taxa in all samples. Remarkably, the performance of eDNA metabarcoding was comparable to the identification of directly sampled benthos and hyporheos. We observed a 62%–78% concordance between direct sampling and eDNA metabarcoding. Notably, eDNA metabarcoding revealed a higher number of hyporheic taxa compared to direct sampling. Moreover, the relative detectability of hyporheos by eDNA metabarcoding differed between the seasons, unlike direct sampling. Our findings underscore the importance of conducting both eDNA surveys and direct sampling to comprehensively assess the composition of the stream community while accounting for seasonal variations. This study demonstrates the utility of eDNA metabarcoding as a non‐destructive approach for investigating the hyporheic zone, enabling a more effective assessment of riverine biodiversity., 08 Nov. 2023, 5, 6, 1667, 1678, Scientific journal, 10.1002/edn3.484
    URLDOI URL
  • Refereed, Landscape and Ecological Engineering, Springer Science and Business Media LLC, Development of primer–probe sets for environmental DNA-based monitoring of pond smelt Hypomesus nipponensis and Japanese icefish Salangichthys microdon, Teruhiko Takahara; Katsuya Fukui; Daisuke Hiramatsu; Hideyuki Doi; Masato Fujii; Toshifumi Minamoto, Jan. 2023, 19, 1, 11, 19, Scientific journal, 10.1007/s11355-022-00507-9
    URLDOI URL
  • Refereed, Freshwater Biology, Comparing environmental DNA with whole pond survey to estimate the total biomass of fish species in pond, Souma R; Katano I; Doi H; Takahara T; Minamoto T, Jan. 2023, 68, 5, 727, 736, Scientific journal, 10.1111/fwb.14059
    DOI URL
  • Refereed, Landscape and Ecological Engineering, Springer Science and Business Media LLC, Diurnal detection of environmental DNA of the semi-aquatic water shrew Chimarrogale platycephala using 25-h water sampling in streams, Nao Shiozuka; Izumi Katano; Hideyuki Doi; Masatoshi Nakamura; Tomoyasu Shirako; Hidetaka Ichiyanagi, 20 Oct. 2022, 19, 1, 69, 77, Scientific journal, 10.1007/s11355-022-00526-6
    URLDOI URL
  • Refereed, Mammal study, Isotopic diet analysis of the;Japanese water shrew Chimarrogale;platycephala to estimate their feeding habits;the usefulness of;body;hair samples, Shiozuka N; Katano I; Kanzaki T; Kikuchi R; Sato N; Nakashita R; Kudo S; Ikeda H; Azuma N, Jul. 2022, 48, 1, 11, Scientific journal
  • Refereed, Front. Ecol. Evol., Frontiers Media SA, Terrigenous subsidies in lakes support zooplankton production mainly via a green food chain and not the brown food chain., Hirama F; Urabe J; Doi H; Kazama T; Noguchi T; Tappenbeck TH; Katano I; Yamamichi M; Yoshida T; Elser JJ, Terrestrial organic matter (t-OM) has been recognized as an important cross-boundary subsidy to aquatic ecosystems. However, recent evidence has shown that t-OM contributes little to promote secondary production in lakes because it is a low-quality food for aquatic consumers. To resolve this conflict, we performed a field experiment using leaf litter as t-OM. In the experiment, we monitored zooplankton biomass in enclosures with and without addition of leaf litter under shaded and unshaded conditions and assessed food web changes with stable isotope analyses. We then examined whether or not leaf litter indeed stimulates lake secondary production and, if it does, which food chain, the detritus-originated food chain (“brown” food chain) or the algae-originated food chain (“green” food chain), contributes more to this increase. Analyses with stable isotopes showed the importance of t-OM in supporting secondary production under ambient lake conditions. However, the addition of the leaf litter increased the zooplankton biomass under unshaded conditions but not under shaded conditions. We found that phosphorus was leached from leaf litter at much faster rate than organic carbon and nitrogen despite its low content in the leaf litter. These results showed that leaf litter stimulated the increase in zooplankton biomass mainly through the green food chain rather than the brown food chain because the leaf litter supplied limiting nutrients (i.e., phosphorus) for primary producers.Our results indicate that the functional stoichiometry of the subsidized organic matter plays a crucial role in determining the relative importance of brown and green food chains in promoting production at higher trophic levels in recipient ecosystems., May 2022, 10, 956819, Scientific journal, 10.3389/fevo.2022.956819
    URLDOI URL
  • Refereed, Apr. 2022, 8, 15, 19, Scientific journal
  • Refereed, Diversity and distributions, Reconciling biodiversity conservation and flood risk reduction: the new strategy for freshwater protected areas, Akasaka T; Mori T; Ishiyama N; Takekawa Y; Kawamoto T; Inoue M; Mitsuhashi H; Kawaguchi Y; Ichiyanagi H; Onikura N; Miyake Y; Katano I; Akasaka M; Nakamura F, Mar. 2022, 28, 6, 1191, 1201, Scientific journal
  • Refereed, Scientific reports, Effects of sediment replenishment on riverbed environments and macroinvertebrate assemblages downstream of a dam, Scientific Reports, Riverbeds downstream of dams are starved of sediment, impacting habitat structure and ecological function. Despite the implementation of sediment management techniques, there has been no evaluation of their conservational effectiveness; the impacts on high trophic level organisms remain unknown. This study examined the effects of sediment replenishment on riverbeds and macroinvertebrates in a dammed river before and after sediment replenishment. We evaluated the particle sizes of replenished sediments and the case material of a case-bearing caddisfly. We observed significant changes in macroinvertebrate assemblages before and after sediment replenishment, and between the upstream and tributary references and downstream of the dam. The percentages of Ephemeroptera, Plecoptera, and Trichoptera, and the number of inorganic case-bearing caddisflies downstream of the dam following sediment replenishment, were significantly higher than the upstream and tributary reference sites. The particle size of case materials used by case-bearing caddisfly corresponded to the size of the replenished sediment. Dissimilarity results after replenishment showed that assemblages downstream of the dam differed from upstream sites, although they were similar to the tributary sites. The dissimilarity between the tributary and downstream of the dam was the same as that between the upstream and tributary. Sediment replenishment was observed to reduce the harmful effects of the dam, and partly restore benefits such as increasing species diversity and altering community assemblages, similar to the effects of tributary inflows., Apr. 2021, 11, 1, 7525(2021), 7525, Scientific journal, True, 10.1038/s41598-021-86278-z
    DOI URL
  • Refereed, Ecosphere, Wiley, Utility of environmental DNA analysis for effective monitoring of invasive fish species in reservoirs., T Jo; S Ikeda; A Fukuoka; T Inagawa; J Okitsu; I Katano; H Doi; K Nakai; H Ichiyanagi; T Minamoto, 2021, 12, 6, e03643, Scientific journal, 10.1002/ecs2.3643
    URLDOI URL
  • Refereed, Ecological Research, Wiley, Compilation of real-time PCR conditions toward the standardization of environmental DNA methods., Doi H; Minamoto T; Takahara T; Tsuji S; Uchii K; Yamatomo S; Katano I, 2021, 36, 3, 1, 10, Scientific journal, 10.1111/1440-1703.12217
    URLDOI URL
  • Refereed, Communucation Biology, A unified framework for herbivore-to-producer biomass ratio reveals the relative influence of four ecological factors., Kazama T; Urabe J; Yamamichi M; Tokita K; Xuwang Y; Katano I; Doi H; Yoshida T; Hairston Jr. NG, The biomass ratio of herbivores to primary producers reflects the structure of a community. Four primary factors have been proposed to affect this ratio, including production rate, defense traits and nutrient contents of producers, and predation by carnivores. However, identifying the joint effects of these factors across natural communities has been elusive, in part because of the lack of a framework for examining their effects simultaneously. Here, we develop a framework based on Lotka-Volterra equations for examining the effects of these factors on the biomass ratio. We then utilize it to test if these factors simultaneously affect the biomass ratio of freshwater plankton communities. We found that all four factors contributed significantly to the biomass ratio, with carnivore abundance having the greatest effect, followed by producer stoichiometric nutrient content. Thus, the present framework should be useful for examining the multiple factors shaping various types of communities, both aquatic and terrestrial., Jan. 2021, 4, 49, 49, 49, Scientific journal, True, 10.1038/s42003-020-01587-9
    DOI URL
  • Refereed, Marine Biology, Exploring a legendary giant squid: An environmental DNA approach., Wada T; Doi H; Togaki D; Kaida R; Nagano M; Katano I; Suzuki M; Ohtani T; Mitsuhashi H, 14 Oct. 2020, 167, 160(2020), Scientific journal
    Permalink
  • Refereed, ECOLOGY AND EVOLUTION, Effects of sampling seasons and locations on fish environmental DNA metabarcoding in dam reservoirs, Kana Hayami; Masayuki K. Sakata; Takashi Inagawa; Jiro Okitsu; Izumi Katano; Hideyuki Doi; Katsuki Nakai; Hidetaka Ichiyanagi; Ryo O. Gotoh; Masaki Miya; Hirotoshi Sato; Hiroki Yamanaka; Toshifumi Minamoto, Jun. 2020, 10, 12, 5354, 5367, Scientific journal, 10.1002/ece3.6279
  • Refereed, Mar. 2020, 7, 19, 27
  • Refereed, Mar. 2020, 7, 9, 18
  • Refereed, LIMNOLOGY, Detection of freshwater mussels (Sinanodonta spp.) in artificial ponds through environmental DNA: a comparison with traditional hand collection methods, Daisuke Togaki; Hideyuki Doi; Izumi Katano, Jan. 2020, 21, 1, 59, 65, Scientific journal, 10.1007/s10201-019-00584-0
    DOI URL
  • Refereed, Environmental DNA, Comparison of inhibition resistance among PCR reagents for detection and quantification of environmental DNA, Uchii K; Doi H; Okahashi T; Katano I; Yamanaka H; Sakata KM; Minamoto T, Dec. 2019, 1, 359, 367
  • Refereed, PEERJ, Environmental DNA detection and quantification of invasive red-eared sliders, Trachemy scripta elegans, in ponds and the influence of water quality, Aozora Kakuda; Hideyuki Doi; Rio Souma; Mariko Nagano; Toshifumi Minamoto; Izumi Katano, Dec. 2019, 7, 7, e8155, Scientific journal, 10.7717/peerj.8155
    DOI URL
  • Refereed, Metabarcoding and Metagenomics, Pensoft Publishers, Spatial structure of fungal DNA assemblages revealed with eDNA metabarcoding in a forest river network in western Japan, Shunsuke Matsuoka; Yoriko Sugiyama; Hirotoshi Sato; Izumi Katano; Ken Harada; Hideyuki Doi, Growing evidence has revealed high diversity and spatial heterogeneity of fungal communities in local habitats of terrestrial ecosystems. Recently, the analysis of environmental DNA has been undertaken to study the biodiversity of organisms, such as animals and plants, in both aquatic and terrestrial habitats. In the present study, we investigated fungal DNA assemblages and their spatial structure using environmental DNA metabarcoding targeting the internal transcribed spacer 1 (ITS1) region of the rRNA gene cluster in habitats across different branches of rivers in forest landscapes. A total of 1,956 operational taxonomic units (OTUs) were detected. Of these, 770 were assigned as Ascomycota, 177 as Basidiomycota, and 38 as Chytridiomycota. The river water was found to contain functionally diverse OTUs of both aquatic and terrestrial fungi, such as plant decomposers and mycorrhizal fungi. These fungal DNA assemblages were more similar within, rather than between, river branches. In addition, the assemblages were more similar between spatially closer branches. This spatial structuring was significantly associated with geographic distances but not with vegetation of the catchment area and the elevation at the sampling points. Our results imply that information on the terrestrial and aquatic fungal compositions of watersheds, and therefore their spatial structure, can be obtained by investigating the fungal DNA assemblages in river water., 10 Jul. 2019, 3, Scientific journal, 10.3897/mbmg.3.36335
    URLDOI URL
  • Refereed, PEERJ, Effects of stream grazers with different functional traits on the spatial heterogeneity of periphyton mats, Izumi Katano; Hideyuki Doi, Jun. 2019, 7, e6747, Scientific journal, True, 10.7717/peerj.6747
    DOI URL
  • Refereed, Mar. 2019, 6, 11, 19
  • Refereed, Proceedings. Biological sciences, A shady phytoplankton paradox: when phytoplankton increases under low light., Masato Yamamichi; Takehiro Kazama; Kotaro Tokita; Izumi Katano; Hideyuki Doi; Takehito Yoshida; Nelson G Hairston Jr; Jotaro Urabe, Light is a fundamental driver of ecosystem dynamics, affecting the rate of photosynthesis and primary production. In spite of its importance, less is known about its community-scale effects on aquatic ecosystems compared with those of nutrient loading. Understanding light limitation is also important for ecosystem management, as human activities have been rapidly altering light availability to aquatic ecosystems. Here we show that decreasing light can paradoxically increase phytoplankton abundance in shallow lakes. Our results, based on field manipulation experiments, field observations and models, suggest that, under competition for light and nutrients between phytoplankton and submersed macrophytes, alternative stable states are possible under high-light supply. In a macrophyte-dominated state, as light decreases phytoplankton density increases, because macrophytes (which effectively compete for nutrients released from the sediment) are more severely affected by light reduction. Our results demonstrate how species interactions with spatial heterogeneity can cause an unexpected outcome in complex ecosystems. An implication of our findings is that partial surface shading for controlling harmful algal bloom may, counterintuitively, increase phytoplankton abundance by decreasing macrophytes. Therefore, to predict how shallow lake ecosystems respond to environmental perturbations, it is essential to consider effects of light on the interactions between pelagic and benthic producers., 04 Jul. 2018, 285, 1882, Scientific journal, True, 10.1098/rspb.2018.1067
    DOI URL
  • Refereed, Japanese Journal of Limnology (Rikusuigaku Zasshi), The Japanese Society of Limnology, Water quality bioindicator programs as an educational tool: measuring effectiveness with a university student questionnaire, URABE Misako; ISHIKAWA Toshiyuki; KATANO Izumi; ISHIDA Yuko; NOZAKI Kentaro; YOSHITOMI Tomoyasu,

    The educational effects of water quality bioindicator programs were investigated using questionnaires administered to students at seven universities. Approximately 10–20％ of the students participated in the bioindicator program before they entered university. In the present curriculum prescribed by the Ministry of Education, Culture, Sports, Science and Technology, bioindicators are usually covered in junior high school science textbooks. In the previous curriculum (priori to 2011), they were often covered in senior high school basic biology textbooks. Although bioindicators are rarely covered in elementary school science textbooks, 70–80％ of students who participated in the bioindicator program learned about bioindicators in elementary school. Thus, additional materials provided by local governments were expected to be used as the primary texts on bioindicators at the elementary school level. A small proportion of students who participated in the bioindicator program learned the scientific basis of water quality through the bioindicator program: one reason is a logical defect inherent in bioindicators themselves, and another reason is that children in elementary school are too young to learn the scientific basis of water quality. Participating in clean-up activities at rivers and lakes did not affect whether a student indicated on the questionnaire that these activities were "an action which is significant to improve the quality of river water". However, for the same questionnaire item, participating in the bioindicator program increased the selection rate for some choices such as "using phosphorus-free detergents", "planting aquatic plants", and "distributing the effective microorganisms (EM)", with the latter choice being an obvious example of pseudoscience. Our results indicated that participating in the bioindicator program is very effective for fostering an interest in nature and the environment, but it is ineffective for enhancing scientific understanding of water quality. Based on these results, we propose four points for improving the bioindicator programs for school children: (1) if aquatic faunae are associated with water quality, water quality must also be measured at the same time using chemical methods; (2) bioindicators of water quality should not be taught at elementary schools but at junior or senior high schools; (3) environmental factors other than water quality must be considered when the bioindicator program is carried out in schools; and (4) in elementary schools, aquatic organisms should be used as tools for understanding biodiversity and local environments.

    , 2018, 79, 1, 1, 18, 10.3739/rikusui.79.1
    DOI URL
  • Refereed, LIMNOLOGY AND OCEANOGRAPHY-METHODS, Water sampling for environmental DNA surveys by using an unmanned aerial vehicle, Hideyuki Doi; Yoshihisa Akamatsu; Yutaka Watanabe; Masuji Goto; Ryutei Inui; Izumi Katano; Mariko Nagano; Teruhiko Takahara; Toshifumi Minamoto, Nov. 2017, 15, 11, 939, 944, Scientific journal, 10.1002/lom3.10214
    DOI URL
  • Refereed, ROYAL SOCIETY OPEN SCIENCE, Detection of an endangered aquatic heteropteran using environmental DNA in a wetland ecosystem, Hideyuki Doi; Izumi Katano; Yusuke Sakata; Rio Souma; Toshihiro Kosuge; Mariko Nagano; Kousuke Ikeda; Koki Yano; Koji Tojo, Jul. 2017, 4, 7, 170568, 170568, Scientific journal, True, 10.1098/rsos.170568
    DOI URL
  • Refereed, PLOS ONE, Environmental DNA method for estimating salamander distribution in headwater streams, and a comparison of water sampling methods, Izumi Katano; Ken Harada; Hideyuki Doi; Rio Souma; Toshifumi Minamoto, May 2017, 12, 5, e0176541, Scientific journal, True, 10.1371/journal.pone.0176541
    DOI URL
  • Refereed, Mar. 2017, 4, 27, 33
  • Refereed, ROYAL SOCIETY OPEN SCIENCE, Distribution and drift dispersal dynamics of a caddisfly grazer in response to resource abundance and its ontogeny, Izumi Katano; Hiromune Mitsuhashi; Hideyuki Doi; Yu Isobe; Tadashi Oishi, Jan. 2017, 4, 1, 160732, 160732, Scientific journal, True, 10.1098/rsos.160732
    DOI URL
  • Refereed, Sep. 2016, 66, 581, 582
  • Refereed, Sep. 2016, 66, 621, 623
  • Refereed, Apr. 2016, 21, 2, 167, 180
  • Refereed, OIKOS, A cross-system meta-analysis reveals coupled predation effects on prey biomass and diversity, Izumi Katano; Hideyuki Doi; Britas Klemens Eriksson; Helmut Hillebrand, Nov. 2015, 124, 11, 1427, 1435, Scientific journal, 10.1111/oik.02430
    DOI URL
  • Refereed, PEERJ, Stream grazers determine their crawling direction on the basis of chemical and particulate microalgal cues, Izumi Katano; Hideyuki Doi, Aug. 2014, 2, e503, Scientific journal, True, 10.7717/peerj.503
    DOI URL
  • Refereed, ECOSPHERE, Effects of biodiversity, habitat structure, and water quality on recreational use of rivers, Hideyuki Doi; Izumi Katano; Junjiro N. Negishi; Seiji Sanada; Yuichi Kayaba, Aug. 2013, 4, 8, Scientific journal, 10.1890/ES12-00305.1
    DOI URL
  • Refereed, AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS, Seasonally tracking vertical and horizontal distribution of unionid mussels (Pronodularia japanensis): implications for agricultural drainage management, Junjiro N. Negishi; Hideyuki Doi; Izumi Katano; Yuichi Kayaba, Jan. 2011, 21, 1, 49, 56, Scientific journal, 10.1002/aqc.1153
    DOI URL
  • Refereed, OIKOS, Integrating elements and energy through the metabolic dependencies of gross growth efficiency and the threshold elemental ratio, Hideyuki Doi; Mehdi Cherif; Tsubasa Iwabuchi; Izumi Katano; James C. Stegen; Maren Striebel, May 2010, 119, 5, 752, 765, Scientific journal, 10.1111/j.1600-0706.2009.18540.x
    DOI URL
  • Refereed, Apr. 2010, 16, 519, 522
  • Refereed, GLOBAL CHANGE BIOLOGY, Genetic diversity increases regional variation in phenological dates in response to climate change, Hideyuki Doi; Mayumi Takahashi; Izumi Katano, Jan. 2010, 16, 1, 373, 379, Scientific journal, 10.1111/j.1365-2486.2009.01993.x
    DOI URL
  • Refereed, LIMNOLOGY AND OCEANOGRAPHY, Upstream resource abundance determines the food searching behavior of a stream grazer: Effect of microalgal cues, Izumi Katano; Hideyuki Doi; Tadashi Oishi, Jul. 2009, 54, 4, 1162, 1166, Scientific journal, 10.4319/lo.2009.54.4.1162
    DOI URL
  • Refereed, JOURNAL OF THE NORTH AMERICAN BENTHOLOGICAL SOCIETY, Longitudinal macroinvertebrate organization over contrasting discontinuities: effects of a dam and a tributary, Izumi Katano; Junjiro N. Negishi; Tomoko Minagawa; Hideyuki Doi; Yoichi Kawaguchi; Yuichi Kayaba, Jun. 2009, 28, 2, 331, 351, Scientific journal, 10.1899/08-010.1
    DOI URL
  • Refereed, JOURNAL OF THE NORTH AMERICAN BENTHOLOGICAL SOCIETY, Distribution patterns of stream grazers and relationships between grazers and periphyton at multiple spatial scales, Hideyuki Doi; Izumi Katano, Jun. 2008, 27, 2, 295, 303, Scientific journal, 10.1899/07-067.1
    DOI URL
  • Refereed, CLIMATE RESEARCH, Heterogeneous intra-annual climatic changes drive different phenological responses at two trophic levels, Hideyuki Doi; Oscar Gordo; Izumi Katano, Jun. 2008, 36, 3, 181, 190, Scientific journal, 10.3354/cr00741
    DOI URL
  • Refereed, OECOLOGIA, Drifting plankton from a reservoir subsidize downstream food webs and alter community structure, Hideyuki Doi; Kwang-Hyeon Chang; Takamitsu Ando; Hiroyuki Imai; Shin-ichi Nakano; Akio Kajimoto; Izumi Katano, May 2008, 156, 2, 363, 371, Scientific journal, True, 10.1007/s00442-008-0988-z
    DOI URL
  • Refereed, LIMNOLOGY, Relationships between length and weight of freshwater macroinvertebrates in Japan, Hitoshi Miyasaka; Motomi Genkai-Kato; Yo Miyake; Daisuke Kishi; Izumi Katano; Hideyuki Doi; Shin-ya Ohba; Naotoshi Kuhara, Apr. 2008, 9, 1, 75, 80, Scientific journal, 10.1007/s10201-008-0238-4
  • Refereed, AGRICULTURAL AND FOREST METEOROLOGY, Phenological timings of leaf budburst with climate change in Japan, Hideyuki Doi; Izumi Katano, Mar. 2008, 148, 3, 512, 516, Scientific journal, 10.1016/j.agrformet.2007.10.002
    DOI URL
  • Refereed, LIMNOLOGY, Changes in periphyton abundance and community structure with the dispersal of a caddisfly grazer, Micrasema quadriloba, Izumi Katano; Hideyuki Doi; Akiko Houki; Yu Isobe; Tadashi Oishi, Dec. 2007, 8, 3, 219, 226, Scientific journal, 10.1007/s10201-007-0211-7
    DOI URL
  • Refereed, BASIC AND APPLIED ECOLOGY, Group size of feeding stream case-bearing caddisfly grazers and resource abundance, Izumi Katano; Hiromune Mitsuhashi; Yu Isobe; Hiroaki Sato; Tadashi Oishi, 2007, 8, 3, 269, 279, Scientific journal, 10.1016/j.baae.2006.03.011
    DOI URL
  • Refereed, Basic and Applied Ecology, The use of algal-mat habitat by aquatic insect grazers: effects of microalgal cue, Doi H; Katano I; Kikuchi E, Mar. 2006, 7, 153, 158
  • Refereed, ZOOLOGICAL SCIENCE, Reach-scale distribution dynamics of a grazing stream insect, Micrasema quadriloba Martynov (Brachycentridae, Trichoptera), in relation to current velocity and periphyton abundance, Izumi Katano; Hiromune Mitsuhashi; Yu Isobe; Hiroaki Sato; Tadashi Oishi, Aug. 2005, 22, 8, 853, 860, Scientific journal, False, 10.2108/zsj.22.853
    DOI URL
  • Refereed, Proceedings of 11th International Symposium on Trichoptera (Tanida K. and Rossiter A. eds.), Life cycle and diet shift during the larval development Uenoa tokunagai Iwata (Trichoptera: Uenoidae), Hosokawa H; Isobe Y; Katano I; Tamotsu S; Oishi T, Apr. 2005, 187, 189
  • Refereed, Proceedings of 11th International Symposium on Trichoptera (Tanida, K. and Rossiter, A. eds.), Relationships between crawling activity of Micrasema quadriloba (Brachycentridae) larvae and amounts of periphyton resource, Apr. 2005, 219, 222
  • Refereed, Korean Journal of Limnology, Diel periodicity in the drift of the fourth instar Micrasema quadriloba (Trichoptera: Brachycentridae) larvae in relation to body size, Jan. 2005, 38, 17, 21
  • Refereed, Nova Supplementa Entomologica, Comparison between gut contents of Micrasema quadriloba (Brachycentridae) and algal communities in the habitat, Katano I; Houki A; Isobe Y; Oishi T, Oct. 2002, 15, 521, 528

MISC

  • Not Refereed, Mar. 2025, 12, 22, 23, Summary national conference
  • Not Refereed, Mar. 2025, 12, 24, 25, Summary national conference
  • Not Refereed, Mar. 2025, 12, 26, 27, Summary national conference
  • Not Refereed, Mar. 2025, 12, 28, 29, Summary national conference
  • Mar. 2025, 12, 30, 31, Summary national conference
  • Not Refereed, Oct. 2024, 34, Summary national conference
  • Not Refereed, Oct. 2024, 31, Summary national conference
  • Not Refereed, Oct. 2024, 38, Summary national conference
  • Not Refereed, Oct. 2024, 60, Report research institution
  • Not Refereed, Oct. 2024, 64, Summary national conference
  • Not Refereed, Oct. 2024, 67, Summary national conference
  • Not Refereed, Oct. 2024, 126, Summary national conference
  • Not Refereed, Sep. 2024, 60, Summary national conference
  • Not Refereed, Mar. 2024, 15, 16, Summary national conference
  • Not Refereed, Mar. 2024, 13, 14, Summary national conference
  • Not Refereed, Mar. 2024, 11, 12, Summary national conference
  • Not Refereed, Mar. 2024, 7, 8, Summary national conference
  • Not Refereed, Oct. 2023, 46, Summary national conference
  • Not Refereed, Oct. 2023, 43, Summary national conference
  • Not Refereed, Oct. 2023, 40, Summary national conference
  • Not Refereed, Oct. 2023, 38, Summary national conference
  • Not Refereed, Oct. 2023, 36
  • Not Refereed, Oct. 2023, 25, Summary national conference
  • Not Refereed, Sep. 2023, 175, Summary national conference
  • Not Refereed, Sep. 2023, 97, Summary national conference
  • Not Refereed, Sep. 2022, 81, 81, Summary national conference
  • Not Refereed, Sep. 2022, 275, 275, Summary national conference
  • Not Refereed, Sep. 2022, 276, 276, Summary national conference
  • Not Refereed, Sep. 2022, 302, 302, Summary national conference
  • Not Refereed, Sep. 2022, 344, 344, Summary national conference
  • Not Refereed, Sep. 2022, 28, 28, Summary national conference
  • Not Refereed, Sep. 2022, 29, 29, Summary national conference
  • Not Refereed, Sep. 2022, 101, 101, Summary national conference
  • Not Refereed, Sep. 2022, 100, 100, Summary national conference
  • Not Refereed, Mar. 2022, 8, 64, 65, Summary national conference
  • Not Refereed, Mar. 2022, 8, 66, 67, Summary national conference
  • Not Refereed, Mar. 2022, 8, 68, 69, Summary national conference
  • Not Refereed, 2022, 8, 70, 71, Summary national conference
  • Not Refereed, Sep. 2021, 72, 72, Summary national conference
  • Not Refereed, Sep. 2021, 73, 73, Summary national conference
  • Not Refereed, Sep. 2021, 74, 74, Summary national conference
  • Not Refereed, Sep. 2021, 140, 140, Summary national conference
  • Not Refereed, Sep. 2021, 141, 141, Summary national conference
  • Not Refereed, Sep. 2021, 72, 72, Summary national conference
  • Not Refereed, Mar. 2021, 7, sup., 14, 15, Summary national conference
  • Not Refereed, Mar. 2021, 7, sup., 12, 13, Summary national conference
  • Not Refereed, Mar. 2021, 7, sup., 10, 11, Summary national conference
  • Not Refereed, Mar. 2021, 7, sup., 8, 9, Summary national conference
  • Not Refereed, Mar. 2021, 7, sup., 6, 7, Summary national conference
  • Not Refereed, Mar. 2020, 7, 44, 45, Summary national conference
  • Not Refereed, Mar. 2020, 7, 46, 47
  • Mar. 2019, 6, 72, 73
  • Mar. 2019, 6, 70, 71
  • Mar. 2019, 6, 68, 69
  • Mar. 2019, 6, 58, 59
  • Mar. 2019, 6, 56, 57
  • Mar. 2018, 5, 58, 59
  • Mar. 2018, 5, 56, 57
  • Mar. 2018, 5, 54, 55
  • Mar. 2018, 5, 52, 53
  • Mar. 2018, 5, 50, 51
  • Mar. 2018, 5, 48, 49
  • Mar. 2017, 4, 64, 65
  • Mar. 2017, 4, 66, 67
  • Mar. 2017, 4, 68, 69
  • Mar. 2017, 4, 70, 71
  • Mar. 2017, 4, 72, 73
  • 2017, 2017
  • 2017, 82nd (Web)
  • Not Refereed, 2017, 61, 0, 16, 16, 10.11556/msj7abst.61.0_16
    DOI URL
  • Mar. 2016, 3, 38, 39
  • Mar. 2016, 3, 30, 31
  • Mar. 2016, 3, 24, 25
  • Mar. 2015, 2, 81, 82
  • Mar. 2015, 2, 69, 70
  • Mar. 2015, 2, 65, 66
  • Mar. 2015, 2, 67, 68
  • Not Refereed, Sep. 2014, 75, 3, 189, 192
  • Mar. 2014, 1, 106, 107
  • Mar. 2014, 1, 104, 105
  • Mar. 2014, 1, 102, 103
  • Mar. 2014, 1, 100, 101
  • Mar. 2013, 17, 18
  • Mar. 2013, 15, 16
  • 2010
  • 2010, 25, 105, 106
  • 2009, 613, 618
  • 2009, 51, 4, 40, 40
  • Sep. 2008, 104, 105
  • 2008, 633, 638
  • Not Refereed, 2008, 73, 0, 84, 84, 10.14903/jslim.73.0.84.0
    DOI URL
  • Not Refereed, 2008, 73, 0, 210, 210, 10.14903/jslim.73.0.210.0
    DOI URL
  • 2007, 275, 276
  • Not Refereed, 2007, 72, 0, 129, 129, 10.14903/jslim.72.0.129.0
    DOI URL
  • 2006, 13, 14
  • Not Refereed, 2006, 71, 0, 117, 117, 10.14903/jslim.71.0.117.0
    DOI URL
  • Not Refereed, 2006, 71, 0, 118, 118, 10.14903/jslim.71.0.118.0
    DOI URL
  • Not Refereed, 2006, 71, 0, 31, 31, 10.14903/jslim.71.0.31.0
    DOI URL
  • Not Refereed, Mar. 2005, 40, 4, 36, 38
  • 2005, 39, 42
  • Not Refereed, Abstracts of the Annual Meeting of the Ecological Society of Japan, ECOLOGICAL SOCIETY OF JAPAN, Microalgal cue for the stream grazer Glossosoma sp., Katano Izumi; Doi Hideyuki, 2005, 52, 0, 723, 723, 10.14848/esj.ESJ52.0.723.0
    DOI URL
  • Not Refereed, 2005, 70, 0, 32, 32, 10.14903/jslim.70.0.32.0
    DOI URL
  • Not Refereed, Proceedings of General Assembly of The Japanese Society of Limnology, The Japanese Society of Limnology, Does a grazer Glossosoma sp. discriminate the chemical cue from periphyton ?, KATANO Izumi; DOI Hideyuki, 2005, 69, 0, 155, 155, 10.14903/jslim.69.0.155.0
    DOI URL
  • Not Refereed, Nara Women's University, Ecological studies on feeding of a case-bearing caddisfly grazer,Micrasema quadriloba Martynov, Aug. 2004, 21, 51, 55
  • Not Refereed, Abstracts of the Annual Meeting of the Ecological Society of Japan, ECOLOGICAL SOCIETY OF JAPAN, Estimations of grazing impacts on periphyton mat by stream grazers., KATANO Izumi; Oishi Tadashi, 2004, 51, 0, 479, 479, 10.14848/esj.ESJ51.0.479.0
    DOI URL
  • Not Refereed, 2003, 50, 0, 279, 279, 10.14848/esj.ESJ50.0_279_4
    DOI URL
  • Not Refereed, Proceedings of General Assembly of The Japanese Society of Limnology, The Japanese Society of Limnology, The drift dispersal and the dynamics of downstream-distribution by stream grazer, Micrasema quadriloba due to compensate for the scarce of food., KATANO Izumi; MITSUHASHI Hiromune; ISOBE Yu; OISHI Tadashi, 2003, 68, 0, 4, 4, 10.14903/jslim.R68.0.4.0
    DOI URL
  • Not Refereed, 2002, 68, 0, 200, 200, 10.14903/jslim.68.0.200.0
    DOI URL
  • Not Refereed, 2002, 68, 0, 77, 77, 10.14903/jslim.68.0.77.0
    DOI URL
  • Zoological science, Zoological Society of Japan, MOLTING PERIOD OF A SPECIES OF TRICHOPTERA(Micrasema quadriloba) : AGGREGATION AND THE EFFECTS ON ATTACHED ALGAL COMMUNITY(Behavior Biology and Ecology)Proceedings of the Seventy-First Annual Meeting of the Zoological Society of Japan :, Katano I.; Isobe Y.; Oishi T., 2000, 17, 53, 53
  • Not Refereed, 31 Dec. 1999, 15, 182, 182
  • 1997, 13, 272
  • Not Refereed, Mar. 2022, 68, 69

Books etc

  • Jan. 2018
  • Jan. 2014
  • Jan. 2012
  • Jan. 2009

Presentations

  • Oral presentation, 08 Mar. 2025
  • Oral presentation, 08 Mar. 2025
  • Oral presentation, 08 Mar. 2025
  • Oral presentation, 08 Mar. 2025
  • Oral presentation, 08 Mar. 2025
  • Oral presentation, 03 Dec. 2024
  • Oral presentation, 19 Oct. 2024, 18 Oct. 2024 - 20 Oct. 2024
  • Oral presentation, 19 Oct. 2024, 18 Oct. 2024 - 20 Oct. 2024
  • Oral presentation, 19 Oct. 2024, 18 Oct. 2024 - 20 Oct. 2024
  • Oral presentation, 19 Oct. 2024, 18 Oct. 2024 - 20 Oct. 2024
  • Oral presentation, 19 Oct. 2024, 18 Oct. 2024 - 20 Oct. 2024
  • Oral presentation, 19 Oct. 2024, 18 Oct. 2024 - 20 Oct. 2024
  • Poster presentation, 19 Oct. 2024, 18 Oct. 2024 - 20 Oct. 2024
  • Oral presentation, Sep. 2024, 29 Sep. 2024 - 03 Oct. 2024
  • Oral presentation, 18 Sep. 2024 - 20 Sep. 2024
  • Oral presentation, 03 Mar. 2024
  • Oral presentation, 03 Mar. 2024
  • Oral presentation, 03 Mar. 2024
  • Oral presentation, 03 Mar. 2024
  • Oral presentation, 12 Oct. 2023
  • Oral presentation, 12 Oct. 2023
  • Oral presentation, 12 Oct. 2023
  • Oral presentation, 12 Oct. 2023
  • Oral presentation, 12 Oct. 2023
  • Oral presentation, 12 Oct. 2023
  • Poster presentation, 20 Sep. 2023
  • 原 直子; 土居 秀幸; 片野 泉, 応用生態工学会第26回大会, ダム下流における流下プランクトン量減衰への濾過食者の寄与:造網型に着目して, Oral presentation, 20 Sep. 2023
  • Izumi Katano; Hideyuki Doi; Naoko Hara; Junjiro N Negishi; Tomoko Minagawa; Yuichi Kayaba, The 40th IAHR World Congress, Offset discontinuities in dammed rivers due to tributary: Which macroinvertebrates taxa respond?, Oral presentation, 21 Aug. 2023
  • Moe Nakamura; Aki Tanaka; Yuko Ishida; Yasuhiro Takemon; Hideyuki Doi; Izumi Katano, The 10th EAFES International Congress, Seasonal changes of environments and macroinvertebrate communities in the temporary ponds on sand bar created by Seigyu, Japanese traditional river works., Poster presentation, 17 Jul. 2023
  • Naoko Hara; Takashi Tashiro; Hideyuki Doi; Yasuhiro Takemon; Izumi Katano, The 10th EAFES International Congress, Comparison of filtering function between the filter-feeding caddisfly and mussels in a river community by the dams in river ecosystems., Poster presentation, 17 Jul. 2023
  • Izumi Katano; Hideyuki Doi; Junjiro N. Negishi; Tomoko Minagawa; Yuichi Kayaba, The 10th EAFES International Congress, A tributary inflow offsets downstream discontinuities in the macroinvertebrate., Poster presentation, 17 Jul. 2023
  • Izumi Katano; Aki Tanaka; Hideyuki Doi; Mami Iguchi; Shohei Koike, pplicability of environmental DNA metabarcoding for the hyporheic zone of a stream bed., Poster presentation, 17 May 2023
  • Poster presentation, 17 Mar. 2023
  • Oral presentation, 19 Feb. 2023
  • Oral presentation, 19 Feb. 2023
  • Oral presentation, 19 Feb. 2023
  • Oral presentation, 19 Feb. 2023
  • Poster presentation, 22 Sep. 2022
  • Poster presentation, 22 Sep. 2022
  • Poster presentation, 22 Sep. 2022
  • Poster presentation, 22 Sep. 2022
  • Oral presentation, 18 Sep. 2022
  • Oral presentation, 18 Sep. 2022
  • Oral presentation, 18 Sep. 2022
  • Oral presentation, 18 Sep. 2022
  • Izumi Katano; Junjiro N. Negishi; Tomoko Minagawa; Hideyuki Doi; Yôichi Kawaguchi; Yuichi Kayaba, 36th Congress of the International Society of Limnology (SIL100), Berlin, Sediment replenishment mitigates riverbed environments and benthic macroinvertebrates communities downstream of a dam, Poster presentation, 08 Aug. 2022
  • Naoko Hara; Izumi Katano; Hideyuki Doi; Junjiro N. Negishi; Tomoko Minagawa; Yuichi Kayaba, 36th Congress of the International Society of Limnology (SIL100), Berlin, Effects of a tributary inflow and sediment replenishment on riverbed environments and benthic macroinvertebrates communities downstream of a dam, Poster presentation, 08 Aug. 2022
  • Oral presentation, 05 Mar. 2022
  • Oral presentation, 05 Mar. 2022
  • Oral presentation, 05 Mar. 2022
  • Oral presentation, 05 Mar. 2022
  • Oral presentation, 24 Sep. 2021
  • Oral presentation, 24 Sep. 2021
  • Oral presentation, 24 Sep. 2021
  • Oral presentation, 21 Sep. 2021
  • Oral presentation, 21 Sep. 2021
  • Oral presentation, 21 Sep. 2021
  • Poster presentation, May 2021
  • Oral presentation, 28 Feb. 2021
  • Oral presentation, 28 Feb. 2021
  • Oral presentation, 28 Feb. 2021
  • Oral presentation, 28 Feb. 2021
  • Oral presentation, 28 Feb. 2021
  • Oral presentation, 29 Feb. 2020
  • 29 Feb. 2020
  • Oral presentation, 01 Mar. 2019
  • Oral presentation, 01 Mar. 2019
  • Oral presentation, 01 Mar. 2019
  • Oral presentation, 01 Mar. 2019
  • Oral presentation, 01 Mar. 2019
  • Poster presentation, Sep. 2018
  • Poster presentation, Sep. 2018
  • Poster presentation, Sep. 2018
  • Mar. 2018
  • Mar. 2018
  • Mar. 2018
  • Mar. 2018
  • Mar. 2018
  • Mar. 2018
  • Mar. 2018
  • Mar. 2018
  • Sep. 2017
  • Sep. 2017
  • Sep. 2017
  • Sep. 2017
  • Sep. 2017
  • Sep. 2017
  • Sep. 2017
  • Sep. 2017
  • Sep. 2017
  • Sep. 2017
  • Sep. 2017
  • Sep. 2017
  • Sep. 2017
  • Sep. 2017
  • Doi H; Akamatsu Y; Watanabe Y; Goto M; Inui R; Katano I; Nagano M; Takahara T; Minamoto T, Environmental DNA survey methods: Water sampling methods using an unmanned aerial vehicle, Aug. 2017
  • Katano I; Doi H; Sakata Y; Souma R; Kosuge T; Nagano N; Ikeda K; Yano K; Tojo K, Detection of an endangered aquatic heteropteran using environmental DNA in a wetland ecosystem, Aug. 2017
  • Feb. 2017
  • Feb. 2017
  • Feb. 2017
  • Feb. 2017
  • Feb. 2017
  • Nov. 2016
  • Nov. 2016
  • Nov. 2016
  • Nov. 2016
  • Nov. 2016
  • Nov. 2016
  • Sep. 2016
  • Yamamichi M; Kazama T; Tokita K; Katano I; Doi H; Yoshida T; Hairston NG; Urabe J, A shady phytoplankton paradox: Why phytoplankton increases under low light, Aug. 2016
  • Katano I; Harada K; Souma R; Sakata Y; Doi H; Minamoto T, 101st Ecological Society of America Annual Meeting, Fort Lauderdale, Use of environmental DNA to survey the distribution of the salamander and fish species, Aug. 2016
  • Mar. 2016
  • Mar. 2016
  • Mar. 2016
  • Sep. 2015
  • Sep. 2015
  • Sep. 2015
  • Aug. 2015
  • Mar. 2015
  • Mar. 2015
  • Mar. 2015
  • Mar. 2015
  • Mar. 2014
  • Mar. 2014
  • Mar. 2014
  • Mar. 2014
  • Mar. 2013
  • Mar. 2013
  • 09 Jul. 2012
  • Sep. 2008
  • Sep. 2007
  • 08 Aug. 2007
  • Sep. 2006
  • 17 Jun. 2006
  • 05 Jun. 2006
  • Sep. 2005
  • Sep. 2005
  • 06 May 2004
  • 03 Aug. 2003
  • 16 Jun. 2003
  • 16 Jun. 2003
  • 18 May 2000

Awards

  • Aug. 2015
  • Oct. 2008
  • Sep. 2007
  • Sep. 2005

Research Projects

  • Apr. 2025 - Mar. 2028, Principal investigator, みえないダム下流河床間隙域をみる:河川生物多様性を涵養できる土砂還元をめざし て, 日本学術振興会 科学研究費助成事業, 基盤研究（C）
  • Apr. 2025 - Mar. 2026, Coinvestigator, ダム下流の河床環境を支配する生物の生態機能評価, 田代喬,片野泉, 公益財団法人河川財団, 河川整備基金
  • Jan. 2025 - Mar. 2026, Principal investigator, 濾過食者シマトビケラ科の生態機能とその季節的変動を評価する：ダム下流域において初となるネイチャー・ベースド・ソリューションへの挑戦, 奈良女子大学, 奈良女子大学 トップレベル女性研究者 研究推進支援経費
  • 挑戦的研究（開拓）, Jul. 2022 - Mar. 2026, 22K18429, Coinvestigator, PCRフリー超深度全ゲノムシークエンスを用いた環境DNAによる全生物相把握, 日本学術振興会, 科学研究費助成事業
  • Apr. 2022 - Mar. 2026, Principal investigator, 特定希少野生動植物コサナエ保護管理事業・環境ＤＮＡ分析, 奈良県
  • Apr. 2020 - Mar. 2026, ダム下流で大量に生息する濾過食者シマトビケラ科幼虫についての研究, 水源地生態研究会 ダム下流生態系研究部会
  • 基盤研究(C), Apr. 2022 - Mar. 2025, 22K12461, Principal investigator, 河川の生物多様性をはぐくむキーハビタット・河床間隙域を環境DNAで評価する, 片野 泉; 土居 秀幸, 日本学術振興会, 科学研究費助成事業, 奈良女子大学, 4030000, 3100000, 930000, kaken
    対象リソースIRI
  • Apr. 2020 - Mar. 2023, Coinvestigator, 伝統的河川工法を用いた木津川の河床地形管理手法に関する研究, 近畿地方整備局淀川河川事務所・京都大学
  • Apr. 2020 - Mar. 2023, 低水敷タマリの環境と底生動物群集について, 河川生態学術研究会 木津川グループ
  • Nov. 2021 - Oct. 2022, Principal investigator, ダム河川における「土砂還元」の新たな効果：生物による水質浄化機能促進の検証, 公益財団法人 住友財団, 2021年度 環境研究助成
  • Aug. 2021 - Jul. 2022, Principal investigator, 河川中流域における一時的水域の水環境および生物群集： 高水敷と低水敷に形成されるタマリの比較, 奈良女子大学, 令和3年度共同研究スタートアップ支援経費
  • Grant-in-Aid for Scientific Research (C), 01 Apr. 2018 - 31 Mar. 2022, 18K11678, A new environmental DNA analysis to overcome inhibition: construction of a Biomass estimation equation with inhibition factors, Katano Izumi, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Nara Women's University, 4290000, 3300000, 990000, The ultimate goal of this study is to develop a biomass estimation equation using environmental DNA (eDNA) detection with environmental inhibition. We have conducted experiments with gradients in the quantity and quality of fine particles in water to determine the amount of eDNA inhibition. As results, we have found that the amount of eDNA inhibition increases with the amount of organic matter in suspended soid in environmental water. From manipulation experiments focusing on amount of bacteria and water flow showed that the amount of eDNA released from zebrafish and the eDNA decomposition were strongly affected first by the water flow and then by the amount of bacteria., kaken
    対象リソースIRI
  • Apr. 2021 - Mar. 2022, Principal investigator, ダム河川における優占濾過食者の水質浄化機能を定量評価する： ブラックボックス・ダム直下域を探る環境DNAの活用, 奈良女子大学, 令和3年度 奈良女子大学研究推進プロジェクト経費
  • Mar. 2020 - Feb. 2021, Principal investigator, 陸水域におけるフロンティア・小湿地生態系における希少種のギルド内捕食：環境DNAによる基礎生態学への挑戦, 奈良女子大学（文部科学省科学技術人材育成費補助事業「ダイバーシティ研究環境実現イニシアティブ（牽引型）」, 研究力向上チャレンジ支援経費
  • Apr. 2018 - Mar. 2019, Coinvestigator, 環境DNAを用いた生息場所推定：異なる遺伝的クレードでの検出系の確, 土居秀幸, 奈良女子大学 共生科学研究センター, 一般共同研究
  • Apr. 2015 - Mar. 2019, Coinvestigator not use grants, ダムによる河川の改変と陸域生態系への波及効果：河川からの水生昆虫の陸上への分散とダムによるその改変, 水源地生態研究会, 周辺森林研究グループ助成
  • Grant-in-Aid for Scientific Research (A), 01 Apr. 2015 - 31 Mar. 2018, 15H02642, Stoichiometric effects of Light and nutrient balance on aquatic communities: field tests with large manipulation experiments in North America, Jotaro Urabe, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), Tohoku University, 41600000, 32000000, 9600000, Although biological communities are sustained by supplies of light and nutrients, it is not necessarily clear how changes in these supply rates affect biological processes and community structures. To uncover these uncertainties in lake and pond ecosystems, filed experiments were performed using outdoor experimental facilities that were able to manipulate light and nutrient supplies to whole pond ecosystems. These field experiments clarified several novel results as follows: reduced light rather increases algal abundance through the competition with submerged aquatic plants, mass transfer efficiency from producers to herbivores are regulated by not only production and predation rates but also size and stoichiometry of producers, and allochthonous input of leaf litters promotes grazing food chains rather than detritus food chains in lakes., url
    対象リソースIRI
  • Grant-in-Aid for Scientific Research (C), 01 Apr. 2015 - 31 Mar. 2018, 15K00596, Environmental DNA methods for muddy water to develop the noninvasive investigation on organisms in the wetlands, Katano Izumi; DOI Hideyuki, Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), 4810000, 3700000, 1110000, The environmental DNA (eDNA) technologies are limited to only clean water column. We aimed to apply the eDNA technology effectively for various habitats. The objective of our study is to establish the eDNA technology for not only clear water column but also turbid water with abundant mud and organic matter. The outcomes are as follows. 1) The eDNA of salamander and insect cloud be detected from muddy wetlands and hyporheic zone in river bed, having abundant particulate organic matter. 2) By multiple field investigations and laboratory experiments, the detection of eDNA quantities (i.e., frequency of the detect of eDNA inhibitation) from water with abundant mud and organic matter were tested. As results, it was pointed out that inhibitation of eDNA detection is not due to the inorganic matter in the mud as suggested by the past studies, but it could be inhibited by the anonymous organic matter., url
    対象リソースIRI
  • Apr. 2017 - Mar. 2018, Coinvestigator, 遺伝子種内多型に対応した環境DNA検出手法の開発：紀伊半島の生物を対象に, 奈良女子大学 共生科学研究センター, 一般共同研究
  • Apr. 2016 - Feb. 2018, Coinvestigator, 環境DNAを用いた陸水生態系種構成と遺伝的多様性の包括的解明手法の確立と実践, 土居秀幸, 環境省, 環境研究総合推進費
  • Apr. 2015 - Mar. 2016, Principal investigator, ため池における環境DNAを活用した生息実態調査研究, 兵庫県, ため池の豊かな生態系再生調査検討業務, Others
  • Apr. 2015 - Mar. 2016, Principal investigator, 環境DNA技術を利用した兵庫県内の多様な湿地における稀少種保全, 兵庫県立大学, 兵庫県立大学女性研究者研究活動支援事業（連携型，文部科学省科学技術人材育成補助事業）
  • Apr. 2013 - Mar. 2016, Coinvestigator, 環境DNA技術を用いた生物分布モニタリング手法の確立, 土居秀幸, 環境省, 環境研究総合推進費, rm:media_coverage
    対象リソースIRI
  • Apr. 2014 - Mar. 2015, Coinvestigator, 瀬戸内海を里海として機能させるための里山・川の物質循環機構の解明と環境教育プログラムの実施, 杉山裕子, 特定非営利活動法人瀬戸内海研究会議, 大阪湾圏域の海域環境再生・創造に関する研究助成
  • Apr. 2012 - Mar. 2015, Principal investigator, ダム下流域における環境保全対策事業「土砂還元」の効果と課題を検証する, クリタ水・環境科学振興財団, 国内研究助成
  • Apr. 2012 - Mar. 2014, Coinvestigator, ダムによる下流河川への影響は，流程に沿ってどのように変化するか？河床および瀬・淵構造と付着藻類に着目して, 森照貴, 水源地環境センター, WEC応用生態研究助成
  • Apr. 2012 - Mar. 2013, Principal investigator, 新在家ビオトープにおける協働型環境教育カリキュラム：自らが生態系に関わる主体であるという学生の意識改革をめざして, 兵庫県立大学, 教育研究プロジェクト助成
  • Apr. 2012 - Mar. 2013, Principal investigator, ダム下流域における河床の粗粒化対策に関するアダプティブマネジメントの提案, 河川管理財団, 河川整備基金助成事業
  • Apr. 2011 - Mar. 2013, Principal investigator, ダム河川での多様な環境対策の思考による生物連続性の回復効果解明と新対策の提言, 公益財団法人住友財団, 環境研究助成
  • Apr. 2011 - Mar. 2012, Principal investigator, 協働型の自然再生技術を学ぶ実践的カリキュラムの構築〜学内ビオトープの整備と活用〜, 兵庫県立大学, 特別教育研究助成金
  • Apr. 2007 - Mar. 2010, Coinvestigator, 固定堰の改築による河道応答特性の高精度推定ならびに水生動物の生息場構造に与える影響評価, 武藤裕則, 土木学会水工学委員会, 河川懇談会共同研究
  • Apr. 2006 - Mar. 2008, Principal investigator, ダム下流支川による，河川生物群集の種多様性と遺伝的多様性の維持機構, 水源地環境センター, WEC応用生態研究助成
  • 2021年度 環境研究助成, 01 Nov. 2021 - 31 Oct. 2022, Principal investigator, ダム河川における「土砂還元」の新たな効果：生物による水質浄化機能促進の検証, 公益財団法人 住友財団, 2021年度 環境研究助成
  • 2021年度 環境研究助成, 01 Nov. 2021 - 31 Oct. 2022, Principal investigator, ダム河川における「土砂還元」の新たな効果：生物による水質浄化機能促進の検証, 公益財団法人 住友財団, 2021年度 環境研究助成

■Ⅲ．社会連携活動実績

１．公的団体の委員等（審議会、国家試験委員、他大学評価委員，科研費審査委員等）

  • 京都大学生態学研究センター, 生態学研究センター運営委員会委員・生態学研究センター共同利用運営委員会委員, Apr. 2025 - Present, Others
  • 国土交通省 水管理・国土保全局, 河川整備基本方針検討小委員会，委員, Mar. 2025 - Present, Government
  • 国土交通省 水管理・国土保全局, 社会資本整備審議会，専門委員, Mar. 2025 - Present, Government
  • 国土交通省 水管理・国土保全局, 能登半島での地震・大雨を踏まえた水害・土砂災害対策検討会 委員, Jan. 2025 - Present, Government
  • （公財）リバーフロント研究所 河川生態学術研究委員会, 委員, Apr. 2024 - Present, Others
  • 日本陸水学会会, 評議員, Jan. 2024 - Present, Society
  • 応用生態工学会, 理事, Oct. 2023 - Present, Society
  • 国土交通省近畿地方整備局淀川環境委員会, 委員, Apr. 2023 - Present, Government
  • 国土交通省近畿地方整備局事業評価監視委員会, 委員, Apr. 2023 - Present, Government
  • 日本陸水学会近畿支部会, 運営委員, Apr. 2021 - Present, Society
  • 奈良県自然環境保全審議会自然保護部会, 委員, Dec. 2019 - Present, Autonomy
  • 二津野ダム下流土砂還元検討委員会, 委員, Apr. 2018 - Present, Others
  • 応用生態工学会, Ecology and Civil Engineering編集委員, Oct. 2017 - Present, Society
  • 奈良県保健研究センター及び奈良県景観・環境総合センター調査研究評価委員会, 委員, Apr. 2023 - Mar. 2025, Autonomy
  • 奈良県公共事業評価監視委員会, 委員, Apr. 2023 - Mar. 2025, Autonomy
  • 国土交通省 水管理・国土保全局「生物の生息・生育・繁殖の場としてもふさわしい河川整備及び流域全体としての生態系ネットワークのあり方検討会」, 委員, Jan. 2024 - Dec. 2024, Government
  • 兵庫県内水面漁場管理委員会, 委員, Jan. 2012 - Dec. 2024
  • 応用生態工学会, 幹事, Oct. 2017 - Mar. 2022, Society
  • 日本陸水学会近畿支部会, 庶務幹事, Apr. 2016 - Mar. 2021
  • 国土交通省姫路河川国道事務所, 揖保川流域懇談会 委員, Apr. 2016 - Mar. 2020
  • 兵庫県立大学 エコヒューマン地域連携センター, 客員准教授, Apr. 2016 - Mar. 2019
  • 大阪府環境影響評価審査会, 委員, Sep. 2016 - Aug. 2018, Autonomy
  • 大阪市環境影響評価専門委員会, 委員, Aug. 2016 - Jul. 2018, Autonomy
  • 大阪府 河川周辺地域の環境保全等審議会・安威川ダム環境改善放流検討部会, 委員, Jun. 2016 - Jul. 2018, Autonomy
  • 日本陸水学会近畿支部会, 運営委員, Apr. 2014 - Mar. 2016
  • 日本陸水学会, 評議員, Apr. 2008 - Mar. 2010
  • 日本陸水学会近畿支部会, 広報幹事, Apr. 2005 - Mar. 2010, Society
  • 日本陸水学会, 陸水学雑誌・Limnology編集委員, Apr. 2005 - Mar. 2008, Society