publications

Papers

*Tomitaka M, Inoue T, Hirayama GH, Ushimaru A, Ishii HS, Sasaki T and *Kenta T (2025) Aesthetic ecosystem services of diverse wildflowers: People's experience shapes preferences for floral traits. Nature-Based Solutions xx:xx.
Watazu T, Hiraiwa MK, Inoue S, Mishima H, Ushimaru A and *Hosaka T (2025) Effectiveness of interval photography cameras for a survey of pollinator communities: comparison with direct observation. Applications in Plant Sciences xx:xx-xx.
*Uchiyama Y, Kyan A, Sato M, Ushimaru A, Minamoto T, Harada K, Takakura M, Kohsaka R, Kiyono M, Tsurumi T, Uchida A, Saga T and Yamamoto K (2025) Association between objective and subjective relatedness to nature and human well-being: Key factors for residents and possible measures for inequality in Japan's megacities. Landscape and Urban Planning 261:105377.
*Ishii HS, Tsujimoto SG, Kadoya MB, Watanabe Y, Kohyama TI, Hiraiwa MK, Ushimaru A and Kudo G (2025) Linkage between community assemblage of floral traits and pollinator fauna: A comparison among six geographical regions Plant Biology 27:538-548.
*Watazu T, Hiraiwa MK, Ushimaru A and Hosaka T (2025) Pollinator is a housemate: Aeinetia indica, a parasite on Miscanthus sinensis, is pollinated by Ceratina bees nesting in its host Plant Species Biology xx:xx-xx.
*Hirayama GH, Inoue T, Kenta T, Ishii HS and Ushimaru A (2025) Long-term management is required for the recovery of pollination networks and function in restored grasslands. Journal of Applied Ecology 62:814-823..
*Asada AA, Ohwaki A, Yaida YA, Kawakami F, Masuda M and Ushimaru A (2025) Prescribed burning effectively maintains threatened species in semi-natural grasslands on lava flows. Plants, People, Planet xx:xx.
Nammoku Y, Nikkeshi A, Terai Y, Ushimaru A and >*Kinoshita M (2025) Morphological and DNA qnalysis of pollen grains on the butterfly individuals reveal their flower visitation history. The Science of Nature 112:13.
*Hirayama GH, Tomita M and Ushimaru A (2025) Habitat preference influences response to changing argicultural landscapes in two long-horned bee. Agriculture, Ecosystems & Environment 381:109437.
Uchiyama Y, Kyan A, Sato M, Ushimaru A, Minamoto T, Kiyono M, Harada K and Takakura M (2024) Local environment perceived in daily life and urban green and blue space visits: uncovering key factors for different age groups to access ecosystem services. Journal of Environmental Management 370:122676.
*Yaida YA, Ngai T, Oguro K, Katsuhara KR, Uchida K, Kenta T and *Ushimaru A (2024) Negative legacy effects of past forest use on plant diversity in semi-natural grasslands on ski slopes. Journal of Environmental Management 368:122120.(YAY, TK and AU authors equally contribute to this work)
*Katsuhara KR, Ushimaru A and Miyazaki Y (2024) Does coexisting congener of a mixed mating species affect the genetic structure and selfing rate via reproductive interference? Oecologia 206:37-45.
*Shimomai H, Taichi N, Katsuhara KR, Kato S, Ushimaru A, and Ohmido N (2024) Allopolyploidy enhances survival advantages for urban environments in the native plant genus Commelina. Annals of Botany 134:1055-1066.
*Yaida YA, Inoue T, Kenta T and *Ushimaru A (2024) Seed dispersal limitation causes negative legacy effect on restoration of grassland plant diversity on ski slopes. Ecology and Evolution 14:e11654.
*Nakahama N, Konagaya T, Ueda S, Hirai N, Yago M, Yaida YA, Ushimaru A and Isagi Y (2024) Road to extinction: archival samples unveiled the process of inbreeding depression during artificial breeding in an almost extinct butterfly species. Biological Conservation 296:110686.
*Taichi N, Nakahama N, Ohmido N and *Ushimaru A (2024) Habitat diversification associated with urban development has a little effect on genetic structure in the annual native plant Commelina communis in an East Asian megacity. Ecology and Evolution 14:e10975.
*Hiraiwa MK and Ushimaru A (2024) Loss of functional diversity rather than species diversity of pollinators decreases community-wide trait matching and pollination function. Functional Ecology 38:1296-1308.
Watazu T, Hiraiwa MK, Inoue S, Mishima H, Ushimaru A and *Hosaka T (2024) Dominance of non-wetland-dependent pollinators in a plant community in a small natural wetland in Shimane, Japan. Journal of Plant research 137:191-201.
*Hidaka S, *Jo TS, Yamamoto S, Katsuhara KR, Tomita S, Miya M, Ikegami M, Ushimaru A and Minamoto T (2024) Sensitive and effective surveillance of Japanese giant salamander (Andria japonicus) distribution in western Japan using multi-copy nuclear DNA marker. Limnology 25:189-198.
*Nakata T and Ushimaru A (2024) Trait variation along an urban-rural gradient in Asian dayflower: the contribution of phenotypic plasticity and genetic divergence. Plant Biology 26:74-81.
*Nakahama N, Kurata S and Ushimaru A (2023) Contribution of genetic analyses to semi-natural grassland biodiversity conservation in Japan. Plant Species Biology 38:158-170.
*Sato M, Minamoto T and Ushimaru A (2023) An interdisciplinary approach to environmental conservation policy: a case of Satoyama re-development in the peri-urban area. International Journal of Economic Policy Studies 17:403-419.
*Aoshima I, Nakao R, Minamoto T, Ushimaru A and Sato M (2023) Heterogenous preference for biodiversity in Japanese urban blue spaces based on people's nature experiences: analysis using eDNA and satisfaction data. City and Environment Interactions 18:100101.
*Ushimaru A, Seo N, Sakagami K and Funamoto D (2023) Sexual dimorphism in dioecious species with complex, specialist pollinated flowers. American Journal of Botany 110:e16148.

American Journal of Botany

Nishizawa R, Nakao R, Ushimaru A and *Minamoto T (2023) Development of evironmental DNA detction assays for snakes in paddy fields in Japan. Landscape and Ecological Engineering 19:3-10.
*Hirayama GH and Ushimaru A (2022) Habitat preference influences response to changing argicultural landscapes in two long-horned bee. Journal of Apicultural Research xx:xx-xx.
*Jo T, Sato M, Minamoto T andUshimaru A (2022) Valuing the cultural services from urban blue space ecosystems in Japanese megacities during the COVID-19 pandemic. People and Nature 4:1176-1189.
*Nakata T, Ishii R, Yaida YA and *Ushimaru A (2022) Horizontal orientation facilitates pollen transfer and rain damage avoidance in actinomorphic flowers of Platycodon grandiflorous. Plant Biology 24:798-805. (TN and AU equally contribute to this work)
Murakami K, *Katsuhara KR,Ushimaru A (2022) Intersexual flower differences in an andromonoecious species: small pollen‐rich staminate flowers under resource limitation. Plant Biology 24:259-265. (MK and KRK equally contributed to this work)
*Katsuhara KR, Tachiki Y, Iritani R and Ushimaru A (2021) The eco-evolutionary dynamics of prior selfing rates promote coexistence without niche partitioning under conditions of reproductive interference<. Journal of Ecology 109:3916-3928.
*Biurrun I, et al.(AU is 199rd)(2021) Benchmarking plant diversity of Palaearctic grasslands and open habitats. Journal of Vegetation Science xx:xx-xx.
*Ushimaru A, Ishii R, Katsuhara RK (2021) Covering and shading by neighbouring plants diminish pollinator visits to and reproductive success of a forest edge-specialist dwarf species. Plant Biology 23:711-718. (AU and RI equally contribute to this work)
*Nikkeshi A, Hiraiwa MK, Ushimaru A, Hoshizaki K, Makita A and Inoue M (2021) Evaluation of sampling effort sufficient to assess pollen species richness on pollinators using rarefaction. Applications in Plant Sciences 9:e11411.
*Jo T, Tomita S, Kohmatsu Y, Osathanunkul M, Ushimaru A and Minamoto T (2020) Seasonal monitoring of Hida salamander Hynobius kimurae using environmental DNA with a genus-specific primer set. Endangered Species Reearch 43:341-352.
*Inoue TYaida YA, Uehara Y, Katsuhara KR, Kawai J, Takashima K, Ushimaru A and Kenta T (2020) The effects of temporal continuities of grasslands on the diversity and species composition of plants. Ecological Research xx:xx-xx.
*Iwachido Y, Uchida K, Ushimaru A, Yokota S and Sasaki T (2020) Nature-oriented park use of satoyama ecosystems can enhance biodiversity conservation in urban landscapes. Landscape and Ecological Engineering 16:163-172.
*Ushimaru A, Uchida K, Ikegami M and Suka T (2020) Grasslands and shurblands in Japan. pp 785-799. in Goldstein, M.I. & DellaSala, D.A. (eds.) 2020. The Encyclopedia of the World's Biomes. Elsevier, Oxford.
*Jo T, Fukuoka A, Uchida K, Ushimaru A and Minamoto T (2020) Multiplex real-time PCR enables the simultaneous detection of environmental DNA from freshwter fishes: a case study of three exotic and three threatened native fishes in Japan. Biological Invasions 22:455-471.
*Matsuhisa S and Ushimaru A (2019) Does sexual dimorphism exist in flowering phenology traits in anemophilous dioecious species? a test with Rumex acetosa. American Journal of Botany 106:1356-1364.
*Valko O, Labadessa R, Labadessa R, Palpurina S, Burrascano S, Ushimaru A and Venn S (2019) Conservation and diversity of Palearctic grasslands - Editorial to the 5th EDGG special issue in Hacquetia. Hacquetia 18:143-146.
*Yaida YA, Nagai T, Oguro K, Katsuhara KR, Uchida K, Kenta T and Ushimaru A (2019) Ski runs as an alternative habitat for threatened grassland plant species in Japan. Palaearctic Grasslands 42:16-22.
*Katsuhara KR, Nakahama N, Komura T, Kato M, Miyazaki Y, Isagi Y, Ito M and Ushimaru A (2019) Development of microsatellite markers for the annual andromonoecious herb Commelina communis f. ciliata (Commelinaceae). Genes & Genetic Systems 94:133-138.
*Ollerton J, et al.(AU is 69rd )(2019) The diversity and evolution of pollination systems in large plant clades: Apocynaceae as a case study.Annals of Botany 123:311-325.
*Aoshima I, Uchida K, Ushimaru A and Sato M (2018) The Influence of Subjective Perceptions on the Valuation of Green Spaces in Japanese Urban Areas. Urban Forestry & Urban Greening 34:166-174.
*Dengler J, et al.(AU is 163rd )(2018) GrassPlot-a database for multi-scale plant diversity in Palaearctic grasslands. Phytocoenologia 48:331-347.
*Uchida K, Fujimoto H and Ushimaru A (2018) Urbanization promotes the loss of seasonal dynamics in the semi-natural grasslands of the East Asian megacity. Basic and Applied Ecology 29:1-11.
*Nakahama N, Uchida K, Ushimaru A and Isagi Y (2018) Historical changes in grassland area determined the demography of semi-natural grassland butterflies in Japan. Heredity 121:155-168.
*Ushimaru A, Uchida K and Suka T (2018) Grassland biodiversity in Japan: threats, management and conservation. pp 197-218. in Squires VR, Dengler J, Feng H & Hua L (eds.) 2018. Grasslands of the world: diversity, management and conservation. CRC Press, Boca Raton, US. (All authors equally contribute to this work)
*Sato M, Ushimaru A and Minamoto T (2017) The effect of different personal histories on valuation of forest ecosystem services in urban areas: a case study of Mt Rokko,Kobe, Japan. Urban Forestry & Urban Greening 28:110-117.
*Aoshima I, Uchida K, Ushimaru A, Sato M (2017) Economic Valuation of the urban green spaces using life satisfaction data. Environmental Science 30:238-249. (in Japanese with English abstract)
*Katsuhara KR Kitamura S and Ushimaru A (online) Functional significance of petals as landing sites in fungus-gnat-pollinated flowers of Mitella pauciflora (Saxifragaceae). Functional Ecology 31:1193-1200.
*Hiraiwa MK and Ushimaru A (2017) Low functional diversity promotes niche changes in natural island pollinator communities. Proceedings of the Royal Society B 284:20162218.
*Nikkeshi A, Hiraiwa MK, Ushimaru A, Hoshizaki K, Makita A and Inoue M (2016) Established method of deposited pollen grains on the surface of pollinated insect body. Japanese Journal of Palynology 61:3-7. (in Japanese with English abstract)
*Nagata YK and *Ushimaru A (Early view) Traditional burning and mowing practices support high grassland plant diversity by providing intermediate levels of vegetation height and soil pH. Applied Vegetation Science 19: 567-577.
Fukuoka A, Takahara T, Matsumoto M, Biology Club of Hyogo Prefectural Agricultural High School, Ushimaru A and Minamoto T(2016) Establishment of detection system for native rare species, Hemigrammocypris rasborella, using environmental DNA. Japanese Journal of Ecology 66:613-620. (in Japanese with English abstract)
*Uchida K, Hiraiwa MK and Ushimaru A (2016) Plant and herbivorous insect diversity loss are grater than null model expectations due to land-use changes in agro-ecosystems. Biological Conservation 201:270-276.
*Uchida, Shinohara, Takahashi, Nakahama, Takami and Ushimaru (2016) Rediscovery of Celes akitanus (Orthoptera, Acrididae) from semi-natural grasslands in Japan. Entomological Science 19:89-96.
*Uchida K, Takahashi S, Shinohara T and Ushimaru A (2016) Threatened herbivorous insects maintained by long-term traditional management practices in semi-natural grasslands. Agriculture, Ecosystems & Environment 221:156-162.
*Nakahama N, Uchida K, Ushimaru A and Isagi Y (2016) Timing of mowing influences genetic diversity and reproductive success in endangered semi-natural grassland plants. Agriculture, Ecosystems & Environment 221:20-27.
*Kondoh M, Mougi A, Ushimaru A and Nakata K (2016) Adaptive movement and food-chain dynamics. Theoretical Ecology 9: 15-25.
*Nikkeshi A, Kurimoto D and Ushimaru A (2015) Low flower-size variation in bilaterally symmetryical flowers: a support for the pollination precision hypothesis. American Journal of Botany 102:2032-2040.
*Matsuhisa S and Ushimaru A (2015) Sexual dimorphism in floral longevity and flowering synchrony in relation to pollination and mating success in three dioecious Ilex species. American Journal of Botany 102:1187-1197.
*Uchida K and Ushimaru A (2015) Land abandonment and intensification diminish spatial and temporal β-diversity of grassland plants and herbivorous insects within paddy terraces. Journal of Applied Ecology 52: 1033-1043.
Ohara RG and *Ushimaru A (2015) Plant beta-diversity is enhanced around grassland-forest edges within a traditional agricultural landscape. Applied Vegetation Science 18:493-502.
Fukumoto S, Ushimaru A and *Minamoto T (2015) A basin-scale application of enivironmental DNA assessment for rare endemic species and closely related exotic species in rivers: a case study of giant salamanders in Japan. Journal of Applied Ecology 52:358-365.
Uchida K and Ushimaru A (2014) Biodiversity declines due to abandonment and intensification of agricultural lands: patterns and mechanisms. Ecological Monographs 84:637-658.
Osawa T, Mitsuhashi H and Ushimaru A (2014) Plant species coexistence relationships may shift according to life history traits and seasons. Plant Ecology 215:597-612.
Ushimaru A, Kobayashi A and Dohzono I (2014) Does urbanization promote floral diversification?: Implications from changes in herkogamy with pollinator availability in an urban-rural area. The American Naturalist 184: 258-267.
Nakahama N, Ushimaru A and Isagi Y (2013) Reproductive traits and flower visitor fauna of Vincetoxicum pycnostelma Kitag. in Nishitani area of Takarazuka City, Hyogo Prefecture. Bulletin of Kansai Organization for Nature Conservation 35: 115-123. (in Japanese with English Abstract)
Uematsu Y and Ushimaru A (2013) Topography- and management-mediated resource gradients maintain rare and common plant diversity around paddy terraces. Ecological Applications 23 : 1357-1366.
Nakata K and Ushimaru A (2013) The effect of predation risk on spider's decisions on web-site relocation. Behaviour 150: 103-114.
Fukada C, Kaneko S, Yokogawa M, Kobayashi T, Ushimaru A and Isagi Y (2012) Development of ten microsatellite markers for Arisaema minus (Araceae), a vulnerable Japanese herb species. Conservation Genetics Resources 4: 495-497.
Iwata T, Nagasaki O, Ishii HS and Ushimaru A (2012) Inflorescence architecture affects pollinator behaviour and mating success in Spiranthes sinensis (Orchidaceae). New Phytologist 193: 196-203.
Tsuji M, Ushimaru A, Osawa T and Mitsuhashi H (2011) Paddy-associated frog declines via urbanization: a test of the dispersal-dependent-decline hypothesis. Landscape and Urban Planning 103: 318-325.
Osawa T, Mitsuhashi H, Uematsu Y and Ushimaru A (2011) Bagging GLM: improved generalized linear model for the analysis of zero-inflated data. Ecological Informatics 6 :270-275.
Osawa T, Mitsuhashi H, Niwa H and Ushimaru A (2011) The role of river confluences and meanderings in preserving local hot spots for threatened plant species in riparian ecosystems. Aquatic Conservation: Marine and Freshwater Ecosystems21:358-363
Ushimaru A and Genkai-Kato M (2011) A theoretical framework for resource translocation during sexual reproduction in modular organisms. Evolurionary Ecology25:885-898.
Uematsu Y, Takeda Y and Ushimaru A (2010) The flora of Satokusachi in the Nishitani area of Takarazuka City, Hyogo Prefecture. Bulletin of Kansai Organization for Nature Conservation 32: 85-98. (in Japanese with English Abstract)
Osawa T, Mitsuhashi H, Niwa H and Ushimaru A (2010) Differences in distribution patterns around river confluences among hydrophilic vegetation groups. Ecological Research 25:1161 -1169 .
Osawa T, Mitsuhashi H, Niwa H and Ushimaru A (2010) Enhanced diversity at network nodes: river confluences increase vegetation-patch diversity. The Open Ecology Journal3:48-58.
Osawa T, Mitsuhashi H and Ushimaru A (2010) River confluences enhance riparian plant species diversity. Plant Ecology 209:95-108.
Tsujino R, Fujita N, Katayama M, Kawase D, Matsui K, Seo A, Shimamura T, Takemon Y, Tsujimura N, Yumoto T and Ushimaru A (2010) Restoration of floating mat bog vegetation after eutrophication damages by improving water quality in a small pond. Limnology 11 :289-297.
Uematsu Y, Koga T, Mitsuhashi H and Ushimaru A (2010) Abandonment and intensified use of agricultural land decrease habitats of rare herbs in semi-natural grasslands. Agriculture, Ecosystems & Environment 135:304-309.
Ushimaru A, Dohzono I, Takami Y and Hyodo F. (2009) Flower orientation enhances pollen transfer in bilaterally symmetrical flowers. Oecologia160:667-674.
Yonekura R, Yamanaka H, Ushimaru A, Matsui K, Uchii K and Maruyama A. (2009) Allochthonous prey subsidies provide an asymmetric growth benefit to invasive bluegills over native cyprinids under the competitive conditions in a pond. Biological Invasions11 : 1347-1355.
Ushimaru A, Ishida C, Sakai S, Shibata M, Tanaka H, Niiyama K and Nakashizuka T. (2008) The effects of human management on spatial distribution of two bumble bee species in a traditional agro-forestry Satoyama landscape. Journal of Apicultural Research 47(4) : 296- 303.
Tsujino R, Matsui K, Ushimaru A, Seo A, Kawase D, Uchihashi H, Kenji S, Takahashi J, Yumoto T and Takemon Y（2007）Invasion of the Mizorogaike Wetland by sika deer, and their effects on vegetation.　Japanese Journal of Conservation Ecology 12(1):20-27. (in Japanese with English Abstract)
Imamura A. and Ushimaru A. (2007) Flower orientation on slopes in myco-heterotrophic species, Monotropastrum globosum. Plant Species Biology 22: 161-166.
Ushimaru A, Kikuchi S, Yonekura R, Maruyama A, Yanagisawa N, Kagami M, Nakagawa M, Mahoro S, Kohmatsu Y, Hatada A, Kitamura S and Nakata K. （2007）The influence of floral symmetry and pollination systems on flower size variation. Nordic Journal of Botany 24: 593-598.
Ushimaru A, Watanabe T and Nakata K. (2007) Colored floral organs influence pollinator behavior and pollen transfer in Commelina communis. American Journal of Botany 94: 249-258.
Ushimaru A, Kawase D and Imamura A (2006) Flowers adaptively face down-slope in ten forest-floor herbs. Functional Ecology 20:585-591.
Ushimaru A and Hyodo F (2005) Why do bilaterally symmetrical flowers orient vertically? Flower orientation influences pollinator landing behaviors. Evolutionary Ecology Research 7:151-160.

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