Researchers Database

Katano Izumi

    Faculty Division of Natural Sciences Research Group of Biological Sciences Associate Professor
Last Updated :2021/04/15

researchmap

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 Experience

  • Apr. 2016, 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

Awards

  • クリタ水・環境科学研究優秀賞, 公益財団法人クリタ水・環境科学振興財団, Aug. 2015
  • 第10回学会賞吉村賞, 日本陸水学会, Oct. 2008
  • 第11回大会優秀ポスター賞, 応用生態工学会, Sep. 2007
  • 第9回大会最優秀ポスター賞, 応用生態工学会, Sep. 2005

Published Papers

  • Effects of sediment replenishment on riverbed environments and macroinvertebrate assemblages downstream of a dam

    Scientific Reports

    Apr. 2021, in press

    Scientific journal

  • 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, Ecosphere, in press

    Scientific journal

  • 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, Ecological Research, 1 - 10

    Scientific journal

  • 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

    Jan. 2021, Communucation Biology, 4 (49)

    Scientific journal

  • 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, Marine Biology, 167, 160(2020), url

    Scientific journal

  • 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

    Environmental DNA (eDNA) analysis has seen rapid development in the last decade, as a novel biodiversity monitoring method. Previous studies have evaluated optimal strategies, at several experimental steps of eDNA metabarcoding, for the simultaneous detection of fish species. However, optimal sampling strategies, especially the season and the location of water sampling, have not been evaluated thoroughly. To identify optimal sampling seasons and locations, we performed sampling monthly or at two-monthly intervals throughout the year in three dam reservoirs. Water samples were collected from 15 and nine locations in the Miharu and Okawa dam reservoirs in Fukushima Prefecture, respectively, and five locations in the Sugo dam reservoir in Hyogo Prefecture, Japan. One liter of water was filtered with glass-fiber filters, and eDNA was extracted. By performing MiFish metabarcoding, we successfully detected a total of 21, 24, and 22 fish species in Miharu, Okawa, and Sugo reservoirs, respectively. From these results, the eDNA metabarcoding method had a similar level of performance compared to conventional long-term data. Furthermore, it was found to be effective in evaluating entire fish communities. The number of species detected by eDNA survey peaked in May in Miharu and Okawa reservoirs, and in March and June in Sugo reservoir, which corresponds with the breeding seasons of many of fish species inhabiting the reservoirs. In addition, the number of detected species was significantly higher in shore, compared to offshore samples in the Miharu reservoir, and a similar tendency was found in the other two reservoirs. Based on these results, we can conclude that the efficiency of species detection by eDNA metabarcoding could be maximized by collecting water from shore locations during the breeding seasons of the inhabiting fish. These results will contribute in the determination of sampling seasons and locations for fish fauna survey via eDNA metabarcoding, in the future., WILEY, Jun. 2020, ECOLOGY AND EVOLUTION, 10 (12), 5354 - 5367, cinii_articles;doi;web_of_science;url

    Scientific journal

  • ダム上下流・土砂還元上下流における濾過食者・刈取食者の体内脂質割合と餌資源の化学量バランス

    佐藤智春; 土居秀幸; 片野泉

    Mar. 2020, 陸水研究, 7, 19 - 27

  • 要注意外来種ミシシッピアカミミガメのため池群における分布決定要因:水質および人間による捨てやすさを考慮して

    覺田青空; 土居秀幸; 片野泉

    Mar. 2020, 陸水研究, 7, 9 - 18

  • 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

    Populations of most freshwater mussels (Unionidae) are declining worldwide; these includes Sinanodonta spp., which inhabit artificial ponds in Japan. The detection of environmental DNA (eDNA) would be a rapid and efficient method for monitoring the distribution of Sinanodonta populations. Accordingly, the aim of the present study was to compare the results of real-time PCR-based eDNA detection to those of hand collection in 24 ponds in Japan. Sinanodonta eDNA was detected in most of the study ponds where Sinanodonta spp. were found by hand collection, and there was a positive correlation between the eDNA detection rate and the number of Sinanodonta specimens collected by hand. These findings demonstrate that eDNA detection is a valuable alternative method of evaluating the distribution of Sinanodonta spp., and that this method has a similar detection sensitivity to that of hand collection. The eDNA method can be used to monitor freshwater mussels at broad scales and prohibitive depths where hand collection is difficult., SPRINGER JAPAN KK, Jan. 2020, LIMNOLOGY, 21 (1), 59 - 65, cinii_articles;cinii_books;doi;web_of_science;url

    Scientific journal

  • 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, Environmental DNA, 1, 359 - 367

  • 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

    Environmental DNA (eDNA) is a powerful tool for monitoring the distribution of aquatic macro-organisms. However, environmental factors, including the water temperature and water quality, can affect the inhibition and/or degradation of eDNA, which complicates accurate estimations of eDNA concentrations and the detection of the presence/absence of species in natural habitats. Further very few eDNA studies have been conducted for reptiles, especially with respect to estimating their biomass and/or abundances. Here we examined the relationship between the visually-observed number of red-eared sliders (Trachemys scripta elegans) and eDNA concentrations across 100 ponds. Additionally, we evaluated the effect of water quality on red-eared slider eDNA concentration in these ponds. We found that there was a significant positive correlation between the observed number of red-eared sliders and the eDNA concentration in the ponds. On comparing various water quality indicators, including dissolved nitrogen, dissolved phosphorous, organic matter, and chlorophyll a (CM. a), we found that only CM. a had a negative correlation with the red-eared slider eDNA concentration, while we did not find any inhibition in the quantitative PCR. We conclude that concentrations of eDNA can potentially be used for estimating the abundance of the red-eared slider. Additionally, CM. a might indirectly influence the degradation of eDNA through the microorganisms bonded to the phytoplankton in the ponds, as microbial activity is thought to decrease eDNA persistence., PEERJ INC, Dec. 2019, PEERJ, 7 (7), e8155, cinii_articles;doi;web_of_science;url

    Scientific journal

  • 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., Pensoft Publishers, 10 Jul. 2019, Metabarcoding and Metagenomics, 3, doi;url;url;url

    Scientific journal

  • Effects of stream grazers with different functional traits on the spatial heterogeneity of periphyton mats

    Izumi Katano; Hideyuki Doi

    Background. Grazing activity on periphytic mats determines mat structure and spatial heterogeneity. Spatial complexity in stream periphyton is highly divergent and may depend on the functional traits of the different primary consumers species (i.e., grazers) such as mouthpart morphology, feeding behavior, and feeding activity. We evaluated the effect of grazing by three species having different functional traits on periphytic mat structure with a focus on mohthpart morphology.Methods. An enclosure experiment was conducted in a stream located in the Nara Prefecture of Japan using two caddisflies with scraping mouthparts, Micrasema quadriloba and Glossosoma, and one mayfly, Epeorus, with brushing mouthparts. The spatial heterogeneity of chlorophyll a(Chl a) was evaluated, and the periphytic mat was analyzed using scanning electron microscopy (SEM) after a 12-d feeding experiment.Results. Our results showed the differences in the spatial heterogeneity of the periphytic mats, such as differences in Chl a levels, grazed by the different grazing species. The strongest effect on the spatial heterogeneity and periphytic abundance was observed for Micrasema quadriloba, a caddisfly species with scraping mouthparts. Epeorus mayfly, with brushing mouthparts and high-mobility behavior, produced the weakest effect on spatial heterogeneity. Glossosoma caddisflies had moderate effects on periphytic spatial heterogeneity and abundance. Our results suggest that differences in grazing effects are largely dependent on grazer mouthparts and behavior., PEERJ INC, Jun. 2019, PEERJ, 7, e6747, True, doi;pubmed;pmc;web_of_science

    Scientific journal

  • ダム上・下流における造網性トビケラ2種の体内脂質割合

    小林優太郎; 角絢香; 土居秀幸; 片野泉

    Mar. 2019, 陸水研究, 6, 11 - 19

  • 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, Proceedings. Biological sciences, 285 (1882), True, doi;pubmed;pmc

    Scientific journal

  • 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.

    , The Japanese Society of Limnology, 2018, Japanese Journal of Limnology (Rikusuigaku Zasshi), 79 (1), 1 - 18, doi;cinii_articles;cinii_books;url;url

  • 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

    Environmental DNA (eDNA) techniques utilizing DNA fragments from water have recently been developed to investigate the distribution and abundance/biomass of aquatic organisms. The eDNA technique is based on the analysis of DNA fragments in sampled water; thus, an unmanned aerial vehicle (UAV; drone) would be a useful way of collecting water for eDNA sampling, and may consequently allow us to extend eDNA surveys both spatially and temporally. Here, we developed a new method of water collection by using UAV with bleachable equipment, to avoid DNA contamination. To test the performance and contamination risk of UAV water sampling in eDNA surveys, we sampled water from a dam reservoir, detected eDNA from two fish species, and compared the water samples obtained by UAV with those obtained by boat. Additionally, we investigated contamination using blank samples. The results revealed that our UAV water sampling method performed similar to the boat sampling method. No positive signals were detected in the blank samples, including those used for UAV sampling, transportation, filtering, and PCR blanks. Our UAV method can be used to investigate species distributions using eDNA. Combinations of UAV technologies, including remote and thermal sensing, will enable efficient environmental monitoring in various waterbodies., WILEY, Nov. 2017, LIMNOLOGY AND OCEANOGRAPHY-METHODS, 15 (11), 939 - 944, doi;web_of_science

    Scientific journal

  • 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

    The use of environmental DNA (eDNA) has recently been employed to evaluate the distribution of various aquatic macroorganisms. Although this technique has been applied to a broad range of taxa, from vertebrates to invertebrates, its application is limited for aquatic insects such as aquatic heteropterans. Nepa hoffmanni (Heteroptera: Nepidae) is a small (approx. 23mm) aquatic heteropteran that inhabits wetlands, can be difficult to capture and is endangered in Japan. The molecular tool eDNA was used to evaluate the species distribution of N. hoffmanni in comparison to that determined using hand-capturing methods in two regions of Japan. The eDNA of N. hoffmanni was detected at nearly all sites (10 eDNA-detected sites out of 14 sites), including sites where N. hoffmanni was not captured by hand (five eDNA-detected sites out of six captured sites). Thus, this species-specific eDNA technique can be applied to detect small, sparsely distributed heteropterans in wetland ecosystems. In conclusion, eDNA could be a valuable technique for the detection of aquatic insects inhabiting wetland habitats, and could make a significant contribution to providing distribution data necessary to species conservation., ROYAL SOC, Jul. 2017, ROYAL SOCIETY OPEN SCIENCE, 4 (7), 170568 - 170568, True, doi;pubmed;pmc;web_of_science

    Scientific journal

  • 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

    Environmental DNA (eDNA) has recently been used for detecting the distribution of macroor-ganisms in various aquatic habitats. In this study, we applied an eDNA method to estimate the distribution of the Japanese clawed salamander, Onychodactylus japonicus, in headwater streams. Additionally, we compared the detection of eDNA and hand-capturing methods used for determining the distribution of O. japonicus. For eDNA detection, we designed a qPCR primer/probe set for O. japonicus using the 12S rRNA region. We detected the eDNA of O. japonicus at all sites (with the exception of one), where we also observed them by hand-capturing. Additionally, we detected eDNA at two sites where we were unable to observe individuals using the hand-capturing method. Moreover, we found that eDNA concentrations and detection rates of the two water sampling areas (stream surface and under stones) were not significantly different, although the eDNA concentration in the water under stones was more varied than that on the surface. We, therefore, conclude that eDNA methods could be used to determine the distribution of macroorganisms inhabiting headwater systems by using samples collected from the surface of the water., PUBLIC LIBRARY SCIENCE, May 2017, PLOS ONE, 12 (5), e0176541, True, cinii_articles;doi;pubmed;pmc;web_of_science;url

    Scientific journal

  • 姫路市近郊のため池38面の基礎的な水質

    相馬理央; 片野泉

    Mar. 2017, 陸水研究, 4, 27 - 33

  • 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

    Stream grazers have a major impact on food web structure and the productivity of stream ecosystems; however, studies on the longitudinal (upstream versus downstream) and temporal changes in their drift dynamics and resulting distributions remain limited. Here, we investigated the longitudinal and temporal distributions and drift propensity of a trichopteran grazer, the caddisfly, Micrasema quadriloba, during its life cycle in a Japanese stream. The distribution of larvae significantly shifted downstream during the fifth instar larval stage during late winter; with periphyton abundance (i.e. their food source) showing similar shifts downstream. Therefore, our results show that the drift dispersal the caddisfly occurs in response to decline in available food resources (i.e. food-resource scarcity) and an increase in food requirements by growing individuals. Furthermore, our results show that this observed longitudinal shift in larval distribution varies through their life cycle, because the drift dispersal of fifth instar larvae was greater than that of immature larvae. The correlation between periphyton abundance and drift propensity of fourth instar larvae was not statistically significant, whereas that of fifth instar larvae was significantly negative. In conclusion, we detected an ontogenetic shift in drift propensity, which might explain the longitudinal and temporal distributions of this species., ROYAL SOC, Jan. 2017, ROYAL SOCIETY OPEN SCIENCE, 4 (1), 160732 - 160732, True, doi;pubmed;pmc;web_of_science

    Scientific journal

  • 環境 DNA 分析:新しい水棲生物分布調査法

    内井喜美子; 源利文; 土居秀幸; 高原輝彦; 山中裕樹; 片野泉

    Sep. 2016, 日本生態学会誌, 66, 581 - 582

  • 環境 DNA 分析のさらなる進展にむけて

    源利文; 内井喜美子; 山中裕樹; 高原輝彦; 片野泉; 土居秀幸

    Sep. 2016, 日本生態学会誌, 66, 621 - 623

  • 河川水辺の国勢調査を保全に活かす―データがもつ課題と研究例

    末吉正尚; 赤坂卓美; 森照貴; 石山信雄; 川本朋慶; 竹川有哉; 井上幹生; 三橋弘宗; 河口洋一; 鬼倉徳雄; 三宅洋; 片野泉; 中村太士

    Apr. 2016, 保全生態学研究, 21 (2), 167 - 180

  • A cross-system meta-analysis reveals coupled predation effects on prey biomass and diversity

    Izumi Katano; Hideyuki Doi; Britas Klemens Eriksson; Helmut Hillebrand

    Predator diversity and abundance are under strong human pressure in all types of ecosystems. Whereas predator potentially control standing biomass and species interactions in food webs, their effects on prey biomass and especially prey biodiversity have not yet been systematically quantified. Here, we test the effects of predation in a cross-system meta-analysis of prey diversity and biomass responses to local manipulation of predator presence. We found 291 predator removal experiments from 87 studies assessing both diversity and biomass responses. Across ecosystem types, predator presence significantly decreased both biomass and diversity of prey across ecosystems. Predation effects were highly similar between ecosystem types, whereas previous studies had shown that herbivory or decomposition effects differed fundamentally between terrestrial and aquatic systems based on different stoichiometry of plant material. Such stoichiometric differences between systems are unlikely for carnivorous predators, where effect sizes on species richness strongly correlated to effect sizes on biomass. However, the negative predation effect on prey biomass was ameliorated significantly with increasing prey richness and increasing species richness of the manipulated predator assemblage. Moreover, with increasing richness of the predator assemblage present, the overall negative effects of predation on prey richness switched to positive effects. Our meta-analysis revealed strong general relationships between predator diversity, prey diversity and the interaction strength between trophic levels in terms of biomass. This study indicates that anthropogenic changes in predator abundance and diversity will potentially have strong effects on trophic interactions across ecosystems., WILEY, Nov. 2015, OIKOS, 124 (11), 1427 - 1435, doi;web_of_science

    Scientific journal

  • Stream grazers determine their crawling direction on the basis of chemical and particulate microalgal cues

    Izumi Katano; Hideyuki Doi

    This study aimed to determine the association between herbivore behavior and cues from producers. We used stream grazer Glossosoma larvae and determined their crawling direction in relation to chemical and visual cues from microalgae. The experimental treatments included control (no cue), particulate (chemical and particulate cues), and dissolved (chemical cue) cues from microalgae. The experimental water samples were randomly placed into either arm of a Y-shaped channel, and the crawling direction of the grazers was determined. Although the grazers crawled toward the arm containing either particulate or dissolved cues, they preferred the arm with particulate cues. This suggested that grazers responded well to both particulate (i.e., drifting algal cells) and chemical (algal smell) cues, and that particulate cues were more important for foraging. In natural habitats, grazers detect cues from producers and change their behaviors to maintain a balance between top-down and bottom-up cues., PEERJ INC, Aug. 2014, PEERJ, 2, e503, True, doi;pubmed;pmc;web_of_science

    Scientific journal

  • Effects of biodiversity, habitat structure, and water quality on recreational use of rivers

    Hideyuki Doi; Izumi Katano; Junjiro N. Negishi; Seiji Sanada; Yuichi Kayaba

    Anthropogenic impacts on biodiversity and habitat conditions can lead to loss of ecosystem services. Cultural services of ecosystems are one of the major categories of ecosystem services, but the relationships between ecosystem conditions and human uses of their cultural services are still largely unknown. To estimate the effects of biodiversity, habitat structure, and environmental pollution on recreational uses of ecosystems, existing data sets for 109 rivers across Japan were used to analyze the relationships among recreational uses of these rivers (fishing, playing in the river, walking, and engaging in sports near the river) and their biodiversity, habitat structure, and water quality. Fish diversity, habitat structure, and water quality had significant effects on the number of people fishing and playing in the rivers. The number of people walking and engaging in sports, which typically takes place on floodplains and dikes, was significantly positively related to the size of the surrounding population rather than to biodiversity or habitat structure. However, water quality had significant effects on such uses of river ecosystems, even though these activities did not involve direct contact with river water. Overall, a decline in biodiversity and ecosystem health was related to a decrease in recreational use., WILEY, Aug. 2013, ECOSPHERE, 4 (8), doi;web_of_science

    Scientific journal

  • 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

    1. The vertical and horizontal distribution of unionoid mussels (Pronodularia japanensis) were examined in spring, late summer and winter for different size classes, including juveniles (<20 mm) and large adults (>50 mm), in an agricultural drainage channel in Central Japan.2. A large number of small-sized juveniles were found at the surface (0-3 cm depth) in spring, whereas approximately half of the adults remained in the deep layer (3-8 cm depth). Most individuals were found in the surface layer irrespective of size classes in summer, and approximately 70% of all individuals descended to the deep layer in winter.3. Horizontal distribution did not substantially change across seasons and high density patches were consistently found in the areas where substrate appeared to be stable or hydraulically sheltered. Spatial distribution of small juveniles was relatively well predicted by the abundance of adults.4. The size-frequency distribution was multi-modal in three seasons and estimated numbers of newly recruited juveniles were highly variable in recent years, suggesting that juveniles were rarely found owing to irregular reproduction and/or recruitment not the overlooked habitat preferred by small-sized juveniles.5. As P. japanensis is characterized by the behaviour of burrowing down to a depth of similar to 10 cm, maintaining the processes of sediment deposition appears to be one of the critical criteria for the conservation of mussel habitats in agricultural drainage channel systems, which are commonly lined with smooth concrete materials. Copyright (C) 2010 John Wiley & Sons, Ltd., WILEY, Jan. 2011, AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS, 21 (1), 49 - 56, doi;web_of_science

    Scientific journal

  • 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

    Metabolic theory proposes that individual growth is governed through the mass- and temperature-dependence of metabolism, and ecological stoichiometry posits that growth is maximized at consumer-specific optima of resource elemental composition. A given consumer's optimum, the threshold elemental ratio (TER), is proportional to the ratio of its maximum elemental gross growth efficiencies (GGEs). GGE is defined by the ratio of metabolism-dependent processes such that GGEs should be independent of body mass and temperature. Understanding the metabolic-dependencies of GGEs and TERs may open the path towards a theoretical framework integrating the flow of energy and chemical elements through ecosystems. However, the mass and temperature scaling of GGEs and TERs have not been broadly evaluated. Here, we use data from 95 published studies to evaluate these metabolic-dependencies for C, N and P from unicells to vertebrates. We show that maximum GGEs commonly decline as power functions of asymptotic body mass and exponential functions of temperature. The rates of change in maximum GGEs with mass and temperature are relatively slow, however, suggesting that metabolism may not causally influence maximum GGEs. We additionally derived the theoretical expectation that the TER for C:P should not vary with body mass and this was supported empirically. A strong linear relationship between carbon and nitrogen GGEs further suggests that variation in the TER for C:N should be due to variation in consumer C:N. In general we show that GGEs may scale with metabolic rate, but it is unclear if there is a causal link between metabolism and GGEs. Further integrating stoichiometry and metabolism will provide better understanding of the processes governing the flow of energy and elements from organisms to ecosystems., WILEY-BLACKWELL, May 2010, OIKOS, 119 (5), 752 - 765, doi;web_of_science

    Scientific journal

  • Upstream resource abundance determines the food searching behavior of a stream grazer: Effect of microalgal cues

    Izumi Katano; Hideyuki Doi; Tadashi Oishi

    To maximize their growth, grazers should shift their behavior to balance the cues from predators and periphyton in the field. As a stream grazer seeks periphyton that are heterogeneously distributed, a shift in its behavior on the basis of the intensity of microalgal cues would be beneficial as it would allow the grazer to feed on more periphyton. Using a caddisfly grazer, Glossosoma larvae, we conducted a laboratory channel experiment with upstream experimental plates having four levels of periphyton abundance ( control, low, medium, and high), and we recorded the movement behavior of the larvae. As periphyton abundance increased, both larval crawling time and the total crawling distance to the periphyton patch significantly decreased and the directness of the crawling path significantly increased. That is, larvae crawled in various directions as they approached a relatively low-abundance periphyton patch, whereas they crawled straight to the high-abundance periphyton patch in a short time. The behavior change was likely due to the detection of some microalgal cue, which should intensify with an increase in upstream periphyton abundance., WILEY, Jul. 2009, LIMNOLOGY AND OCEANOGRAPHY, 54 (4), 1162 - 1166, doi;web_of_science

    Scientific journal

  • 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

    Macroinvertebrate organization along a river was examined to relate biological responses to environmental changes observed across 2 discontinuities (a dam and a tributary). Benthic macroinvertebrates and a range of environmental variables were sampled from 4 study segments (above the dam, below the dam, below the tributary confluence, and in the tributary). Substrate was significantly coarser below than above the dam. In contrast, water-quality variables, such as water temperature and dissolved O-2, changed little below the dam. The most striking discontinuity was substrate coarseness at the tributary confluence. Substrate below the confluence was finer than substrate below the dam and similar to the substrate above the dam. Macroinvertebrate organization differed across the 2 discontinuities. Assemblage composition above the dam was more similar to composition below the confluence than to composition below the dam. The longitudinal organization of the macroinvertebrates could be explained largely by changes in substrate characteristics and habitat preferences of the indicator species. The densities of drifting zooplankton and phytoplankton were higher below than above the dam and were higher below the dam than below the confluence. However, the density of drifting plankton did not differ between the reach immediately above the confluence and the reaches below the confluence. This result suggests that the decrease of zooplankton and phytoplankton occurred above the tributary, probably because of biological entrapment or passive deposition rather than the contribution of the tributary inflow. The dam and tributary caused contrasting discontinuities in macroinvertebrate organization. The tributary generally reversed the dam-related changes to the main stem habitat and the macroinvertebrate community. A key management implication of our study is that efforts to restore dam-related environmental impacts would be facilitated by understanding the role of tributaries downstream of the dam., NORTH AMER BENTHOLOGICAL SOC, Jun. 2009, JOURNAL OF THE NORTH AMERICAN BENTHOLOGICAL SOCIETY, 28 (2), 331 - 351, doi;web_of_science

    Scientific journal

  • Distribution patterns of stream grazers and relationships between grazers and periphyton at multiple spatial scales

    Hideyuki Doi; Izumi Katano

    We examined the relationships between the distribution of dominant herbivorous insect grazers (Glossosoma larvae), environmental factors (current velocity, water depth, periphyton biomass), and grazer-periphyton interactions at multiple spatial scales (microhabitat, riffle, reach) in a stream. We used multiple regression models to explain densities of Glossosoma larvae at each spatial scale in terms of the environmental factors. All r(2)-values were significantly higher at the riffle than at the microhabitat or reach scales. Thus, the riffle scale provided better predictions of Glossosoma larval density than did the microhabitat (smaller) and reach (larger) scales. The r(2)-values of exponential regressions between grazer densities and periphyton biomass were lower at the microhabitat than at the riffle or reach scales. These results indicate that the patterns of relationships between the insect grazers and periphyton were detected more clearly at larger than at smaller scales., NORTH AMER BENTHOLOGICAL SOC, Jun. 2008, JOURNAL OF THE NORTH AMERICAN BENTHOLOGICAL SOCIETY, 27 (2), 295 - 303, doi;web_of_science

    Scientific journal

  • Heterogeneous intra-annual climatic changes drive different phenological responses at two trophic levels

    Hideyuki Doi; Oscar Gordo; Izumi Katano

    A shift in a life cycle event of one species relative to other species in an ecosystem should be considered more relevant than an absolute shift in phenological dates. However, there is very little evidence regarding the differential effects of climate change on the phenologies of different trophic levels and their potential effects on ecosystem functioning. The Japan Meteorological Agency has monitored the flowering of 4 Prunus tree species and the appearance date of the butterfly Pieris rapae (a proxy for potential pollinators) in spring at Nagano, Japan, since 1953. Flowering tended to occur earlier over the last 3 decades, whereas the appearance of the butterfly was delayed. The effects of climate and. the timing of the sensitive period differ between both trophic levels. The plants were strongly affected by temperature (r = -0.87) 30 to 40 d prior to flowering, whereas the butterfly was less affected by temperature (r = -0.50), and the effects mainly occurred during the 15 d prior to its appearance. The temperature during the plants' sensitive period has increased sharply since 1953, whereas the temperature during the butterfly's sensitive period has not changed significantly. The phenologies of the plants and butterfly are changing in opposite directions because they use different climatic cues with different temporal trends. This is the first documentation of differential effects of climate change between plant and insect phenology in Japan., INTER-RESEARCH, Jun. 2008, CLIMATE RESEARCH, 36 (3), 181 - 190, doi;web_of_science

    Scientific journal

  • 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

    Subsidy between ecosystems has been considered in many natural ecosystems, and should alter food webs and communities in human-impacted ones. We estimated how drifting plankton from a reservoir contribute to downstream food webs and showed that they alter community structures over a 10-km reach below the dam. To estimate the contribution of the drifting plankton to macroinvertebrates, we used C and N isotopes and an IsoSource mixing model. In spring and autumn, contributions of plankton to collector-filterer species were highest 0.2 km downstream of the dam, and clearly decreased from 0.2 to 10 km. At 0.2 km, the contribution of plankton to a predator stonefly was remarkably high. These results indicated that drifting plankton from a dam reservoir could subsidize downstream food webs and alter their energy base, but the importance of this subsidy decreased as distance from the reservoir increased. The general linear models indicated that the abundance of collector-filterers and predators was related positively to zooplankton density in stream water. Thus, food source alteration by drifting plankton also influenced the community structures downstream of the dam., SPRINGER, May 2008, OECOLOGIA, 156 (2), 363 - 371, True, doi;pubmed;web_of_science

    Scientific journal

  • 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

    Relationships between weight (W; dry weight) and length (L; head capsule width, total body length (L; head carapace length) were examined in 31 Japanese freshwater macroinvertebrate taxa, using the form W = aL(b). The relationships were expressed as data of the lowest taxonomic level and data of higher taxonomic levels. The length-weight relationships obtained in this study were similar to those obtained in North America and Europe at the lowest taxonomic level, whereas they could be different from those obtained in North America and Europe at the higher taxonomic levels. We suggest that researchers should make their own regressions for a target taxon or use the regression for the same taxon as possible lower taxonomic level in the local area., SPRINGER JAPAN KK, Apr. 2008, LIMNOLOGY, 9 (1), 75 - 80, cinii_articles;cinii_books;doi;web_of_science;url

    Scientific journal

  • Phenological timings of leaf budburst with climate change in Japan

    Hideyuki Doi; Izumi Katano

    Phenological timing of leaf budburst in plants is important for growth, since early budburst timing extends the growth period of the plant. We estimated the effect of climate change on the phenological budburst timing of four trees throughout four sites in Japan, a region with few studies on this topic. The leaf budburst date of plants has advanced or been stable during the last five decades in these four Japanese localities. This fact is due to the negative relationship between dates and temperature using multiple regression models, observed at all sites. Climate change has shifted budburst phenology in Japan with the increase of spring temperatures. However, precipitation did not show any effect on budburst timing. At two budburst dates of three tree species had not remarkably changed or delayed through-sites, out the past five decades. There were differences between localities at the same latitude. (C) 2007 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV, Mar. 2008, AGRICULTURAL AND FOREST METEOROLOGY, 148 (3), 512 - 516, doi;web_of_science

    Scientific journal

  • 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

    We examined the larval population densities and biomass of a caddisfly grazer, Micrasema quadriloba, and the abundance and community structures of periphyton at a segment scale (7.4 km with four study sites), along a second- to fourth-order Japanese mountain stream throughout the grazer's life cycle. In the uppermost riffle of the study segment (site 1), periphyton abundance was kept at low levels when the larvae occurred. The larval distribution spread downstream as larvae developed from first instars in May to fifth instars in January. We performed multiple regression analyses to test the effects of environmental variables and larval biomass on periphyton abundance in both the riffle of site I and the study segment; the results revealed that the larval biomass was significantly negatively correlated with periphyton abundance similarly in both the riffle and the study segment. In addition, both the correlation and community analyses showed that the larval biomass was significantly negatively correlated to the relative abundance of large and/or filamentous microalgae, which appeared in the uppermost layer of the periphyton mat, and that larval biomass was significantly positively correlated to the relative abundance of small diatoms, which strongly adhered to the substrate. Thus, the present study implied that the grazing of M. quadriloba larvae would regulate the abundance of periphyton in a riffle and also regulate the abundance and community structure of periphyton at the segment scale with the expansion of their longitudinal distribution., SPRINGER JAPAN KK, Dec. 2007, LIMNOLOGY, 8 (3), 219 - 226, cinii_articles;cinii_books;doi;web_of_science;url

    Scientific journal

  • Group size of feeding stream case-bearing caddisfly grazers and resource abundance

    Izumi Katano; Hiromune Mitsuhashi; Yu Isobe; Hiroaki Sato; Tadashi Oishi

    Several herbivorous insects are known to benefit from feeding in groups; however, little is known about (1) the resource conditions under which herbivorous insects perform group feeding and (2) the optimum population size to get any benefits by group feeding, for example, in terms of growth performance. To test the hypotheses that the benefits from group feeding change with resource level and population size, we performed field investigations and an enclosure experiment using the grazer caddisfly larva Micrasema quadriloba. The field investigations revealed aggregated distributions of larvae (indicator of aggregation, 1(delta) = 4.1 +/- 1.55, aggregated density: 12.7 +/- 5.3 individuals per 3.1 x 3.1 cm(2) (mean +/- 1 SD) when periphyton was abundant on stream cobbles and random distributions (I-delta = 1.0 +/- 0.11) when periphyton was scarce. In the enclosure experiment, the relative-growth rate (RGR) of the larvae at each population size showed different tendencies at high and low periphyton abundance Levels; RGR with abundant periphyton had a convex curve with a peak at intermediate population size, whereas RGR with scarce periphyton decreased linearly with increasing population size. The benefits from group feeding thus changed with resource level; larvae obtained high growth performance by group feeding behavior only when the resource was sufficiently abundant. The present study revealed not only that the optimum group size of larvae increased their growth performance, but also that this optimum group size occurred frequently in the field. We also discuss the mechanisms and benefits of group feeding by case-bearing caddisfly grazers. (C) 2006 Gesellschaft fur Okologie. Published by Elsevier GmbH. All rights reserved., ELSEVIER GMBH, 2007, BASIC AND APPLIED ECOLOGY, 8 (3), 269 - 279, doi;web_of_science

    Scientific journal

  • 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

    Reach-scale temporal shifts in the distribution of larvae of a grazing caddisfly, Micrasema quadriloba (Brachycentridae), were investigated in a Japanese mountain stream. The larvae showed an aggregated distribution within the reach at the beginning of the immigration, then became randomly dispersed throughout the reach as the immigration progressed. The abundance of periphyton in the reach decreased dramatically with increasing dispersal of the larvae. Simple regression analyses revealed that the stream's flow regime was the most important environmental factor that determined the reach-scale distribution of the larvae and that the relationship between the flow regime and the distribution of the larvae shifted temporally. In addition, our results suggest that only this species of grazing insect, which was dominant in the study reach, controlled the reach-scale abundance of the periphyton., ZOOLOGICAL SOC JAPAN, Aug. 2005, ZOOLOGICAL SCIENCE, 22 (8), 853 - 860, False, doi;cinii_articles;cinii_books;pubmed;web_of_science;url;url;url

    Scientific journal

MISC

  • 環境DNAによる、湿地性半翅目ヒメタイコウチ(Nepa hoffmanni)の生息密度推定:保全ビオトープにおける微生息場所の季節変化

    信ヶ原佐保; 片野泉; 窪田敏

    Mar. 2021, 陸水研究, 7 (sup.), 14 - 15

  • 源流に生息する希少両生類ハコネサンショウウオの分布調査におけるeDNA法の活用

    小林凛; 片野泉

    Mar. 2021, 陸水研究, 7 (sup.), 12 - 13

  • ダムによる餌環境変化が濾過食者シマトビケラ科の栄養状態に及ぼす影響

    輪地紗良; 片野泉

    Mar. 2021, 陸水研究, 7 (sup.), 10 - 11

  • ダム河川における河床表面・間隙域の生物相比較:濁りに着目して

    東山芽生; 片野泉; 田中亜季

    Mar. 2021, 陸水研究7(s), 8-9., 7 (sup.), 8 - 9

  • カワネズミにとって陸域由来の餌生物は重要か?

    塩塚菜生; 片野泉; 東信行

    Mar. 2021, 陸水研究, 7 (sup.), 6 - 7

  • 菌類メタバーコーディングによる河川水中の菌類相評価

    松岡 俊将; 佐藤 博俊; 原田 憲; 片野 泉; 土居 秀幸

    日本菌学会, 2017, 日本菌学会大会講演要旨集, 61 (0), 16 - 16, doi;cinii_articles

  • 陸水近畿支部会・第1回巡検および第23回研究発表会報告

    片野 泉; 杉山 裕子

    日本陸水学会, Sep. 2014, 陸水学雑誌, 75 (3), 189 - 192, cinii_articles;cinii_books;url

  • ダム下流における支川の効果を考える:供給土砂量の異なる2河川間の比較

    片野 泉; 佐川 志朗; 真田 誠至; 土居 秀幸; 根岸 淳二郎; 皆川 朋子; 萱場 祐一

    日本陸水学会, 2008, 日本陸水学会 講演要旨集, 73 (0), 84 - 84, doi;cinii_articles

  • 発電ダム廃止による自然流況の復活が本支流の生息魚類に与える影響

    佐川 志朗; 山下 慎吾; 秋野 淳一; 真田 誠至; 根岸 淳二郎; 片野 泉; 皆川 朋子; 萱場 祐一

    日本陸水学会, 2008, 日本陸水学会 講演要旨集, 73 (0), 210 - 210, doi;cinii_articles

  • 支川流入がダム下流の河床環境と底生動物群集に与える影響:近畿8ダム河川間での比較

    片野 泉; 土居 秀幸; 根岸 淳二郎; 皆川 朋子; 萱場 祐一

    日本陸水学会, 2007, 日本陸水学会 講演要旨集, 72 (0), 129 - 129, doi;cinii_articles

  • グレイザーの餌探索行動における付着藻類キュー利用の可能性

    片野 泉; 土居 秀幸

    日本陸水学会, 2006, 日本陸水学会 講演要旨集, 71 (0), 117 - 117, doi;cinii_articles

  • 空間スケール階層間における藻類食者トップダウン効果検出の違い

    土居 秀幸; 片野 泉

    日本陸水学会, 2006, 日本陸水学会 講演要旨集, 71 (0), 118 - 118, doi;cinii_articles

  • イシガイ類の生息場所環境解析

    根岸 淳二郎; 萱場 祐一; 皆川 朋子; 片野 泉; 田代 喬

    日本陸水学会, 2006, 日本陸水学会 講演要旨集, 71 (0), 31 - 31, doi;cinii_articles

  • 昆虫学研究室訪問(12)奈良女子大学共生科学研究センター

    片野 泉

    ニューサイエンス社, Mar. 2005, 昆虫と自然, 40 (4), 36 - 38, cinii_articles;cinii_books;url

  • Microalgal cue for the stream grazer Glossosoma sp.

    Katano Izumi; Doi Hideyuki

    付着藻類の捕食者であるグレイザー(藻類食者)水生昆虫が、採餌行動のために効率良く付着藻類パッチ間を移動することがよく知られており、グレイザーが付着藻類ケミカルキューを認識している可能性は高いと考えられる。そこで本研究では,グレイザー水生昆虫のヤマトビケラGlossosoma sp.を用い,ヤマトビケラが付着藻類のケミカルキューを認識するかどうかを,ハビタットユースと歩行行動の2点から検証した。ハビタットユース実験:終齢ヤマトビケラ15匹を閉鎖系人工水路に囲い込み,基質として付着藻類現存量の異なるタイル3段階と付着藻類を生やさないタイル(initial plate)を与え,明条件・暗条件両方において実験を行った。ヤマトビケラは全てinitial plate上に静置した後,2時間後の各個体ハビタットユースをinitial・experimental上の個体数%で評価した。歩行行動実験:終齢ヤマトビケラ6匹を用いて,明期のみで同様の実験を行った。付着藻類現存量は4段階に設定した。実験開始時,ヤマトビケラはinitial plate上に整列させ,3分毎の移動距離と移動方向をビデオカメラにより記録した。移動方向については,計算により1(上手な移動)から-1(下手な移動)の値をとる数値に変換し,その巧みさについて評価を行った。ハビタットユース実験から、明期暗期ともに,実験開始2時間後のヤマトビケラのハビタットユースは,付着藻類を生やしたexperimental plate上で有意に高かった。また,このハビタットユースは付着藻類現存量に比例して増加する傾向があった。本実験から,ヤマトビケラは付着藻類の現存量に応じてハビタットユースを変えることが明らかとなった。歩行行動実験から、ヤマトビケラの移動距離は付着藻類現存量の多少による差はなかったが、しかし,移動方向の巧みさは,付着藻類現存量に比例して,有意に増加(上手になる=experimental plateにまっすぐ進む)した。野外河川におけるグレイザー・ヤマトビケラは,付着藻類ケミカルキュー量を認識し,効率良く採餌行動を行っていることが示唆された。, ECOLOGICAL SOCIETY OF JAPAN, 2005, Abstracts of the Annual Meeting of the Ecological Society of Japan, 52 (0), 723 - 723, doi;cinii_articles

  • 阿木川ダム下流における支川合流が、河川底生動物群集に与える影響

    片野 泉; 河口 洋一; 田代 喬; 皆川 朋子; 萱場 祐一

    日本陸水学会, 2005, 日本陸水学会 講演要旨集, 70 (0), 32 - 32, doi;cinii_articles

  • Does a grazer Glossosoma sp. discriminate the chemical cue from periphyton ?

    KATANO Izumi; DOI Hideyuki

    河川において,グレイザーが付着藻類をケミカルキューによって認識しているかどうかを,匍匐型グレイザー・ヤマトビケラGlossosoma sp.と,時間差により現存量を調節した付着藻類タイルを用いた2種類の実験により検証した。
    明暗の2光条件下両方におけるヤマトビケラのハビタットユースは,付着藻類があるタイルの方が,ないタイルよりも有為に高かった。
    一方,明条件において,付着藻類がある場合に有為に巧みな最適移動方向をとっており,付着藻類現存量の増加に伴って,この移動方向は有為に巧みとなった。
    よってヤマトビケラは付着藻類のケミカルキューを認識して移動方向・ハビタットユースを変えている可能性が示された。, The Japanese Society of Limnology, 2005, Proceedings of General Assembly of The Japanese Society of Limnology, 69 (0), 155 - 155, doi;cinii_articles

  • Ecological studies on feeding of a case-bearing caddisfly grazer,Micrasema quadriloba Martynov

    片野 泉

    Nara Women's University, Aug. 2004, 博士学位論文 : 内容の要旨及び審査の結果の要旨, 21, 51 - 55, cinii_articles;cinii_books

  • Estimations of grazing impacts on periphyton mat by stream grazers.

    KATANO Izumi; Oishi Tadashi

    野外河川の付着藻類マットは,ほぼ常時,多様な藻類食者(grazer)による摂食圧のもとにある。これまで,付着藻類マットの垂直方向インパクト強度(深度)は,グレイザーの口器形態のみで決定されるとされてきた。しかし,近年の研究により,このインパクト強度は口器形態だけでは説明できないことが明らかにされてきた。
    そこで,多様なグレイザー種それぞれの付着藻類マットへのインパクト強度を比較し,正確に評価することを目的として本研究を行った。比較のために,口器形態・体サイズ・移動速度・行動様式の4種類のファクターを用い,グレイザー水生昆虫を分類した。この各グループの代表種(Epeorus latifolium, Glossosoma sp., Micrasema quadriloba, and more) に,野外密度に準じた囲い込み操作実験によって,厚さの異なる付着藻類マットを摂食させた。実験終了後,付着藻類マットは,SEMによる観察を行い,また,各グレイザーののインパクト深度を比較・評価した。また,垂直方向のみでなく水平方向のインパクト強度についても評価を試みた。, ECOLOGICAL SOCIETY OF JAPAN, 2004, Abstracts of the Annual Meeting of the Ecological Society of Japan, 51 (0), 479 - 479, doi;cinii_articles

  • 河川トビケラ類グレイザーの集団摂食:∼分布動態の観点から∼

    片野 泉; 三橋 弘宗; 磯辺 ゆう; 大石 正

    日本生態学会, 2003, 日本生態学会大会講演要旨集, 50 (0), 279 - 279, doi;cinii_articles

  • 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

    河川生態系において、グレイザーが局地的に高密度で生息すると、その地点全体の付着藻類量は枯渇する。この補償のため、移動能力に制限のある底生無脊椎グレイザーは流下行動によって、餌資源の豊富な新しいハビタットに到達すると考えられる。その場合、底生無脊椎グレイザーの流程分布は、餌要求量が増すと考えられる終齢期に大きく下流方向へ拡がるはずである。本研究は、底生無脊椎グレイザーであるマルツツトビケラが餌資源枯渇を補償するため流下行動を起こしているという仮説を検証する。, The Japanese Society of Limnology, 2003, Proceedings of General Assembly of The Japanese Society of Limnology, 68 (0), 4 - 4, doi;cinii_articles

  • クロツツトビケラ(Uenoa tokunagai)における胃内容物の消化について

    細川 周美; 片野 泉; 磯辺 ゆう; 大石 正

    日本陸水学会, 2002, 日本陸水学会 講演要旨集, 68 (0), 200 - 200, doi;cinii_articles

  • 河川グレーザーの持つ特殊な密度効果

    片野 泉; 三橋 弘宗; 磯辺 ゆう; 大石 正

    日本陸水学会, 2002, 日本陸水学会 講演要旨集, 68 (0), 77 - 77, doi;cinii_articles

  • クロツツトビケラ(Uenoa tokunagai)の食性と, 生息域の藻類群集との比較

    乾 加奈子; 片野 泉; 磯辺 ゆう; 清水 晃; 大石 正

    31 Dec. 1999, Diatom : the Japanese journal of diatomology, 15, 182 - 182, cinii_articles;cinii_books

Books etc

  • 水生半翅類の生物学(大庭伸也・編)

    土居秀幸; 片野泉; 東城幸治 (, Range: 水生半翅類調査への環境DNAの適用)

    北隆館, Jan. 2018

  • 水辺の環境科学Ⅰ−川の誕生 (谷田一三・江崎保男・編)

    片野泉 (, Range: ダム下流河川の生態的特性)

    朝倉書店, Jan. 2014

  • 現代の生態学9巻 淡水生態学のフロンティア(吉田丈人・鏡味麻衣子・加藤元海 編)

    土居秀幸; 片野泉 (, Range: 河川生態系の被食;補食関係と食物網)

    共立出版, Jan. 2012

  • 川の百科事典 (高橋裕 編)

    片野泉 (, Range: オオシロカゲロウ, カゲロウ目, 刈り取り食者, カワカゲロウ科, カワゲラ目, 浮石沈み石)

    丸善, Jan. 2009

Presentations

  • 水質要因による環境 DNA 検出量の変化:ため池の環境水を用いたゼブラフィッシュの飼育実験

    相馬理央; 山中裕樹; 土居秀幸; 片野泉

    日本陸水学会近畿支部会第29回研究発表会, Mar. 2018

  • アカミミガメを対象とした目視調査と環境DNA調査の精度比較:ため池への外来種侵入予測ポテンシャルマップ構築に向けて

    覺田青空; 東垣大祐; 相馬理央; 源利文; 土居秀幸; 片野泉

    日本陸水学会近畿支部会第29回研究発表会, Mar. 2018

  • ダム河川と自然河川における底生動物群集の比較:流域のα,β,γ多様性に着目して

    佐藤智春; 國澤美月; 松岡真梨奈; 水守裕一; 相馬理央; 覚田青空; 東垣大輔; 小池祥平; 角絢香; 土居秀幸; 片野泉

    日本陸水学会近畿支部会第29回研究発表会, Mar. 2018

  • 水生昆虫成虫の陸域への分散におよぼすダムおよびダム湖の影響

    松岡真梨奈; 水守裕一; 布野隆之; 一柳英隆; 土居秀幸; 片野泉

    日本陸水学会近畿支部会第29回研究発表会, Mar. 2018

  • 小規模ダム河川の不連続要因が底生動物群集・機能多様性に与える影響

    水守裕一; 松岡真梨奈; 相馬理央; 一柳英隆; 土居秀幸; 片野泉

    日本陸水学会近畿支部会第29回研究発表会, Mar. 2018

  • 兵庫県東播磨地域のドブガイの分布と局所絶滅を引き起こす要因

    東垣大輔; 覺田青空; 相馬理央; 土居秀幸; 片野泉

    日本陸水学会近畿支部会第29回研究発表会, Mar. 2018

  • 光・外来性有機物の供給バランスと繊毛虫個体群の成長速度

    風間健宏; 平間文也; 野口拓水; Tyler Tappenbeck; 片野泉; 土居秀幸; 山道真人; 吉田丈人; James Elser; 占部城太郎

    第65回日本生態学会大会, Mar. 2018

  • 二次生産に及ぼす生食ー腐食連鎖の相対的役割:湖沼隔離水界を用いた実験的解析

    占部城太郎; 平間文也; 風間健宏; 野口拓水; 吉田丈人; 山道真人; 片野泉; 土居秀幸; James Elser

    第65回日本生態学会大会, Mar. 2018

  • 環境DNAの野外適用範囲を広げる:渓流域,湿地への応用

    片野泉

    ELR2017(応用生態工学会第21回大会), Sep. 2017

  • メタバーコーディングが明らかにする河川水中の菌類相とその空間構造

    松岡俊将; 佐藤博俊; 原田憲; 片野泉; 土居秀幸

    日本陸水学会第82回大会, Sep. 2017

  • ミジンコの成長に及ぼす自生性と外来性有機物の栄養評価

    野口拓水; 風間健宏; 平間文也; Tyler Tappenback; 土居秀幸; 片野泉; 吉田丈人; 山道真人; James Elser; 占部城太郎

    日本陸水学会第82回大会, Sep. 2017

  • 水生昆虫の生息可能温度:北米のデータベースを用いた解析

    土居秀幸・John; S. Kominoski; 片野泉

    日本陸水学会第82回大会, Sep. 2017

  • アカミミガメを対象とした目視調査と環境DNA調査の精度比較:ため池への外来種侵入予測ポテンシャルマップ構築に向けて

    覺田青空; 東垣大祐; 相馬理央; 源利文; 土居秀幸; 片野泉

    日本陸水学会第82回大会, Sep. 2017

  • 兵庫県中播磨地域のため池におけるドブガイの分布制限要因

    東垣大輔; 覺田青空; 相馬理央; 土居秀幸; 片野泉

    日本陸水学会第82回大会, Sep. 2017

  • 環境DNA技術におけるPCR阻害要因の検討:ため池の水とゼブラフィッシュを用いた飼育実験

    相馬理央・山中裕樹・土居秀幸・片野泉.

    日本陸水学会第82回大会, Sep. 2017

  • 木葉・ミジンコ:湖沼二次生産に対する外来性有機物の影響

    平間文也; 風間健宏; 野口拓水; 山道真人; 片野泉; 土居秀幸; 吉田丈人; Tyler Tappenbeck・Jim Elser; 占部 城太郎

    日本陸水学会第82回大会, Sep. 2017

  • 環境DNAによる河川・湿地での希少種の探索:ハコネサンショウウオとヒメタイコウチを例に

    片野泉; 原田憲; 酒多勇輔; 相馬理央; 土居秀幸

    日本陸水学会第82回大会, Sep. 2017

  • 光:栄養塩バランスと生態転送効率―プランクトンを用いた野外操作実験

    風間健宏; 平間文也; Tyler Tappenback; 土居秀幸; 片野泉; 吉田丈人; 山道真人; James Elser; 占部城太郎

    日本陸水学会第82回大会, Sep. 2017

  • 小規模ダム河川の底生動物群集がダム・堰堤・支川流入から受ける影響

    水守裕一; 松岡真梨奈; 相馬理央; 一柳英隆; 土居秀幸; 片野泉

    日本陸水学会第82回大会, Sep. 2017

  • 水生昆虫成虫の陸域への分散におよぼすダムおよびダム湖の影響

    松岡真梨奈・水守裕一・布野隆之・一柳英隆・土居秀幸・片野泉.

    日本陸水学会第82回大会, Sep. 2017

  • ため池における外来種などの環境DNAによる検出

    相馬理央; 土居秀幸; 片野泉

    ELR2017(応用生態工学会第21回大会), Sep. 2017

  • 環境DNAによるため池の外来生物分布調査ーミシシッピアカミミガメにおける適用とPCR阻害要因の検討

    相馬理央; 源利文; 土居秀幸; 片野泉

    ELR2017(応用生態工学会第21回大会), Sep. 2017

  • Environmental DNA survey methods: Water sampling methods using an unmanned aerial vehicle

    Doi H; Akamatsu Y; Watanabe Y; Goto M; Inui R; Katano I; Nagano M; Takahara T; Minamoto T

    102nd Ecological Society of America Annual Meeting, Porrland, Aug. 2017

  • Detection of an endangered aquatic heteropteran using environmental DNA in a wetland ecosystem

    Katano I; Doi H; Sakata Y; Souma R; Kosuge T; Nagano N; Ikeda K; Yano K; Tojo K

    102nd Ecological Society of America Annual Meeting, Porrland, Aug. 2017

  • 菅生ダム湖や周辺における流下物および流下プランクトン群集組成の季節的変遷

    谷川緑; 水守裕一; 松岡真梨奈; 赤松真治; 相馬理央; 一柳英隆; 土居秀幸; 片野泉

    日本陸水学会近畿支部会第28回研究発表会, Feb. 2017

  • 小規模ダム河川における底生動物群集へのダム・堰堤・支川流入の影響

    水守裕一; 松岡真梨奈; 赤松真治; 谷川緑; 相馬理央; 一柳英隆; 土居秀幸; 片野泉

    日本陸水学会近畿支部会第28回研究発表会, Feb. 2017

  • ダムは水生昆虫の春季羽化ピークにどのような影響をもたらすか:流程地点間での比較

    赤松真治; 松岡真梨奈; 水守裕一; 谷川緑; 布野隆之; 一柳英隆; 土居秀幸; 片野泉

    日本陸水学会近畿支部会第28回研究発表会, Feb. 2017

  • 菅生ダムにおける水生昆虫成虫におよぼすダムの影響:季節間および流程地点間での比較

    松岡真梨奈; 赤松真治; 水守裕一; 谷川緑; 布野隆之; 一柳英隆; 土居秀幸; 片野泉

    日本陸水学会近畿支部会第28回研究発表会, Feb. 2017

  • 環境DNA技術におけるPCR阻害要因の検討:野外調査および環境水を用いた飼育実験による分析

    相馬理央; 源利文; 土居秀幸; 片野泉

    日本陸水学会近畿支部会第28回研究発表会, Feb. 2017

  • ダムは水生昆虫の春季羽化ピークにどのような影響をもたらすか:流程地点間での比較

    赤松真治; 松岡真梨奈; 水守裕一; 谷川緑; 布野隆之; 一柳英隆; 土居秀幸; 片野泉

    日本陸水学会第81回大会, Nov. 2016

  • 水生昆虫の羽化におよぼす小規模ダムの影響:季節間および流程地点間での比較

    松岡真梨奈; 赤松真治; 水守裕一; 谷川緑; 布野隆之; 一柳英隆; 土居秀幸; 片野泉

    日本陸水学会第81回大会, Nov. 2016

  • ダム河川流程における流下物および流下プランクトン群集組成の季節変化

    谷川緑; 水守裕一; 松岡真梨奈; 赤松真治; 相馬理央; 一柳英隆; 土居秀幸; 片野泉

    日本陸水学会第81回大会, Nov. 2016

  • 小規模ダム河川におけるダム・堰堤・支川流入が底生動物群集に与える影響

    水守裕一; 松岡真梨奈; 赤松真治; 谷川緑; 相馬理央; 一柳英隆; 土居秀幸; 片野泉

    日本陸水学会第81回大会, Nov. 2016

  • ミシシッピアカミミガメの生息域調査:環境DNA技術の適用とPCR阻害要因の検討

    相馬理央; 源利文; 土居秀幸; 片野泉

    日本陸水学会第81回大会, Nov. 2016

  • 環境DNAを用いた渓流性ハコネサンショウウオOnchodactylus japonicusの分布調査

    片野泉; 原田憲; 相馬理央; 酒多勇輔; 源利文; 土居秀幸

    日本陸水学会第81回大会, Nov. 2016

  • 底生動物群集はダム下流でどう変化しどう緩和されるか?

    片野泉.

    応用生態工学会第20回大会, Sep. 2016

  • A shady phytoplankton paradox: Why phytoplankton increases under low light

    Yamamichi M; Kazama T; Tokita K; Katano I; Doi H; Yoshida T; Hairston NG; Urabe J

    101st Ecological Society of America Annual Meeting, Fort Lauderdale, Aug. 2016

  • Use of environmental DNA to survey the distribution of the salamander and fish species

    Katano I; Harada K; Souma R; Sakata Y; Doi H; Minamoto T

    101st Ecological Society of America Annual Meeting, Fort Lauderdale, Aug. 2016

  • 環境DNAによる、湿地性半翅目ヒメタイコウチ(Nepa hoffmanni)の生息密度推定:保全ビオトープにおける微生息場所の季節変化

    信ヶ原佐保; 片野泉; 窪田敏

    日本陸水学会近畿支部会第32回研究発表会, 28 Feb. 2021

  • 源流に生息する希少両生類ハコネサンショウウオの分布調査におけるeDNA法の活用

    小林凛; 片野泉

    日本陸水学会近畿支部会第32回研究発表会, 28 Feb. 2021

  • ダムによる餌環境変化が濾過食者シマトビケラ科の栄養状態に及ぼす影響

    輪地紗良; 片野泉

    日本陸水学会近畿支部会第32回研究発表会, 28 Feb. 2021

  • ダム河川における河床表面・間隙域の生物相比較:濁りに着目して

    東山芽生; 片野泉; 田中亜季

    日本陸水学会近畿支部会第32回研究発表会, 28 Feb. 2021

  • カワネズミにとって陸域由来の餌生物は重要か?

    塩塚菜生; 片野泉; 東信行

    日本陸水学会近畿支部会第32回研究発表会, 28 Feb. 2021

Teaching Experience

  • Fieldwork in Riverine Biology (Nara Women's University)

  • Applied ecology 2 (Nara Women's University)

  • Excersices of applied ecology 2 (Nara Women's University)

  • Excersices of applied ecology 1 (Nara Women's University)

  • Applied ecology (Applied ecology 1) (Nara Women's University)

  • Exercises in Applied Ecology (Nara Women's University)

  • Practical English of Biological and Environmental Sciences (Nara Women's University)

  • Special topics in inland waterl ecology (Nara Women's University)

  • Seminor of inland water ecology 2 (Nara Women's University)

  • Seminor of inland water ecology 1 (Nara Women's University)

  • Exercise of inland water ecology 4 (Nara Women's University)

  • Exercise of inland water ecology 3 (Nara Women's University)

  • Exercise of inland water ecology 2 (Nara Women's University)

  • Exercise of inland water ecology 1 (Nara Women's University)

  • Special Topics in Applied Ecology (Nara Women's University)

  • Practice of Animal Morphology and Classification (Nara Women's University)

  • Practice of Environmental Biology (Nara Women's University)

  • Special Topic of Biology and Environmental Science 4 (Nara Women's University)

  • Deployment practice (Nara Women's University)

  • Ecology (Nara Women's University)

Media Coverage

  • 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, rm:research_project_id
  • 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, rm:research_project_id
  • 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, rm:research_project_id
  • 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, rm:research_project_id;rm:research_project_id
  • 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


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