研究者詳細 - 伴　修平

論文 - 伴　修平

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Nutrient removal from anaerobic digestion effluents of aquatic macrophytes with the green alga, Chlorella sorokiniana 査読

Kimura S., Yamada T., Ban S., Koyama M., Toda T.

Biochemical Engineering Journal 142 170 - 177 2019年2月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Biochemical Engineering Journal

© 2018 Elsevier B.V. Green microalgae have great potential for removing inorganic nutrients from wastewater and anaerobic digestion effluent (ADE). We investigated the cultivation conditions for maximum algal yield and nutrient (ammonium and phosphate) removal rates. The green microalga, Chlorella sorokiniana, was cultured using ADE from anaerobic digestion by two dominant macrophytes, Elodea nuttallii and Egeria densa, which cause environmental problems in Lake Biwa, Japan, because of excessive growth. Available magnesium (Mg) in the ADEs from both macrophytes was not sufficient for maximum algal growth and nutrient removal. We demonstrated that Mg-enrichment was essential for enhancing algal yield in, and nutrient removal rate from, ADEs.

DOI： 10.1016/j.bej.2018.12.001

Scopus

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Determining suitable submerged macrophyte biomass in terms of dissolved oxygen concentration and biodiversity in the South Basin of Lake Biwa, Japan 査読国際誌

Ishikawa, K., H. Haga, E. Inoue and S. Ban

Limnology 2019年1月

Differences in dissolved phosphate in shallow-lake waters as determined by spectrophotometry and ion chromatography 査読

Yi R., Song P., Liu X., Maruo M., Ban S.

Limnology 2019年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Limnology

© 2019, The Japanese Society of Limnology. Phosphorus (P) plays important roles in aquatic ecosystems, but accurately determining phosphorus species (particularly bioavailable phosphate) is difficult. When phosphate concentrations are spectrophotometrically measured as soluble reactive P (SRP), the actual values are often overestimated. Ion chromatography is one method for accurately measuring orthophosphate concentrations. To clarify how the spectrophotometrical measurement overestimates actual phosphate concentrations, we compared estimates of phosphate concentrations in lake waters using both methods. SRP and orthophosphate concentrations in water samples collected from four shallow lakes around Lake Biwa, Japan, were determined monthly for 1 year by spectrophotometry and ion chromatography, respectively. SRP concentrations were frequently higher than those for orthophosphate in all lakes throughout the study period, suggesting that SRP and orthophosphate are not equivalent, although a significant relationship was found between them. Orthophosphate/SRP (ortho/SRP) ratios varied spatiotemporally in all lakes (range 0.11–1.04; mean 0.56), being well predicted by biological-mediated relevant parameters using a stepwise multiple logistic regression analysis (R 2 = 0.76). The results implied that organic matter associated with biological activity contributes to the variability in ortho/SRP ratios. Such large variability in ortho/SRP ratios emphasizes the importance of accurate orthophosphate estimates for understanding P dynamics in aquatic ecosystems.

DOI： 10.1007/s10201-019-00574-2

Scopus

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Planktivorous fish predation masks anthropogenic disturbances on decadal trends in zooplankton biomass and body size structure in Lake Biwa, Japan 査読

Liu X., Dur G., Ban S., Sakai Y., Ohmae S., Morita T.

Limnology and Oceanography 2019年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Limnology and Oceanography

© 2019 Association for the Sciences of Limnology and Oceanography Pelagic zooplankton samples from Lake Biwa, Japan, collected monthly since 1971, were analyzed for biomass and body size structure. Our aim was to clarify the relative effects of food availability and global warming vs. top-down control by fish predation on long-term trends. Annual mean biomass and density-weighted body size were calculated and compared with water temperature, total phosphorus (TP), as a proxy of food amount, and catch per unit effort (CPUE) of Ayu (Plecoglossus altivelis altivelis), as a proxy of planktivorous fish predation pressure. Mean water temperature above 20 m increased by 0.94°C. TP increased until 1974 and then decreased until 1985, becoming stable after that. Ayu CPUE increased until 1987 and then declined. The study period can be divided into two nutritional phases: a high TP phase (1971–1985) and a low-stable TP phase (1986–2010). Five zooplankton taxa, Eodiaptomus japonicus, Cyclopoida spp., Daphnia spp., Bosmina longirostris, and Diaphanosoma orientalis, were continuously dominant. Annual mean total crustacean biomass varied from 0.3 to 3.6 g dry weight m−2, slightly decreasing until 1993 but increasing thereafter. Generalized linear models showed that annual mean body sizes were affected by temperature and CPUE, whereas annual mean biomass was affected by TP and CPUE. These had no effect during the high TP phase, whereas only CPUE affected both traits during the low-stable TP phase. We concluded that zooplankton biomass and body size long-term trends were mostly influenced by fish predation and that eutrophication and global warming impacts might be affected by top-down control.

DOI： 10.1002/lno.11336

Scopus

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Validation of a high-resolution acoustic imaging sonar method by estimating the biomass of submerged plants in shallow water 査読

Mizuno K., Asada A., Ban S., Uehara Y., Ishida T., Okuda N.

Ecological Informatics 46 179 - 184 2018年7月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Ecological Informatics

© 2018 Acoustic sensing is often used for mapping and monitoring aquatic plants in shallow waters. Recently, high-resolution imaging sonar was applied to study a variety of aquatic organisms. This method can provide high-resolution, three-dimensional (3D) acoustic data on the spatial distribution of submerged plants. However, no commercial software packages are available to digitalize the images of submerged plants generated from imaging sonar data, and the high-resolution imaging sonar method has not been standardized because of a lack of empirical data. In this study, we measured the biomass of submerged plants in the north basin of Lake Biwa using high-resolution acoustic imaging sonar and compared the results to directly measured biomass values to validate the utility of high-resolution acoustic imaging sonar as a quantitative method. Biomass was calculated in 10 randomly selected quadrats (1 × 1 m) in Lake Biwa. The analysis of the resulting data indicated a strong correlation between the number of pixels in the digital images of submerged plants and their directly calculated biomass (R2= 0.91, p <.0001). The results suggest that the high-resolution imaging sonar method is a promising tool for estimating the biomass of submerged plants. Thus, this method is expected to contribute to a better understanding of aquatic ecology.

DOI： 10.1016/j.ecoinf.2018.07.002

Scopus

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Fungal community structure at pelagic and littoral sites in Lake Biwa determined with high-throughput sequencing 査読国際誌

Song, P., S. Tanabe, R. Yi, M. Kagami, X. Liu, S. Ban

Limnology 2018年4月

Effects of temperature and nutritional conditions on physiological responses of freshwater copepod Eodiaptomus japonicus in Lake Biwa 査読

Liu, X. and S. Ban

Limnological Study 2018年4月

Modern lake ecosystem management by sustainable harvesting and effective utilization of aquatic macrophytes 査読国際誌

Ban, S., T. Toda, M. Koyama, K. Ishikawa, A. Kohzu and A. Imai

Limnology 2018年4月

Effects of different algal diets and carbon supplies on larval development, growth and survival in the freshwater copepod Mongolodiaptomus malaindosinensis (Copepoda: Calanoida) 査読

Boonmak P., Liu X., Ban S., Sanoamuang L.

Plankton and Benthos Research 13 ( 4 ) 163 - 172 2018年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Plankton and Benthos Research

© 2018, Plankton Society of Japan. All rights reserved. The freshwater calanoid copepod Mongolodiaptomus malaindosinensis is an endemic species of the lower Mekong basin, including Malaysia. The relationships between environmental factors and life history traits have been reported for many copepods, while they have never been assessed in this tropical species. Post-embryonic development time (post-EDT), body size and survival rate of M. malaindosinensis were determined under different algal concentrations of Chlamydomonas reinhardtii and Cryptomonas tetrapyrenoidosa at 25°C, to clarify the effects of algal species and carbon supply on their somatic growth and survival. Post-EDT until adult in M. malaindosinensis decreased with increasing food carbon supply regardless of the algal species tested. Although naupliar developments were the shortest at 10 4 cells mL −1 of C. reinhardtii, food shortage delayed the development time and also induced high mortality during the copepodid stages. The highest survival rate of 93% was obtained in the copepods fed on C. tetrapyrenoidosa at 5×10 4 cells mL −1 , whereas the survival rates in the remaining lower carbon supply were <23%. The most sensitive stages were the 1st copepodid stage, as indicated by high stage-specific mortalities, because of large morphological and physiological changes in this transitional stage. Prosome length of adult M. malaindosinensis positively correlated with food carbon supplies, though females were larger than males. Somatic growth rate exponentially increased with increasing food carbon supplies with a threshold at around 4.0 mgC L −1 . These results suggest that tropical copepods may be adapted to higher food quantities due to their high metabolic rates under high temperature conditions.

DOI： 10.3800/pbr.13.163

Scopus

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Effect of operating temperature on anaerobic digestion of the Brazilian waterweed Egeria densa and its microbial community 査読国際誌

Watanabe, K., M. Koyama, J. Ueda, S. Ban, N. Kurosawa, T. Toda

Anaerobe 47 8 - 17 2017年4月

Effects of acclimatization on metabolic plasticity of Eodiaptomus japonicus (Copepoda: Calanoida) determined using an optical oxygen meter 査読国際誌

Liu, X. and S. Ban

Journal of Plankton Research 39 111 - 121 2017年4月

Effect of alkaline pretreatment on mesophilic and thermophilic anaerobic digestion of a submerged macrophyte: Inhibition and recovery against dissolved lignin during semi-continuous operation 査読国際誌

Koyama, M., K. Watanabe, N. Kurosawa, K. Ishikawa, S. Ban and T. Toda

Bioresource Technology 238 2017年4月

Effects of food concentration on the reproductive capacity of the invasive freshwater calanoid copepod Arctodiaptomus dorsalis (Marsh, 1907) in the Philippines 査読国際誌

Tordesillas D.T., P.M.F. Paredes, K.P.E. Villaruel, C.A.A.M. Queneri, J.L. Rico, S. Ban and R.D.S. Papa

J. Crustacean Biol. 2017年4月

Anaerobic co-digestion of alkali-pretreated submerged macrophytes and acidified food waste for reduction of neutralizing agents 査読国際誌

Koyama, M., N. Nakahashi, K. Ishikawa, S. Ban, T. Toda

International Biodeterioration & Biodegradation 125 208 - 213 2017年4月

水草バイオマスの持続的利用を通した里湖循環型社会の可能性招待

伴　修平，戸田　龍樹，石川　可奈子，高津　文人

環境技術 45 ( 9 ) 30 - 35 2016年4月

Effect of temperature on life history traits of the invasive calanoid copepod Arctodiaptomus dorsalis (Marsh, 1907) from Lake Taal, Philippines 査読

Tordesillas, D.T., N.K.P. Abaya, M.A.S. Dayo, L.E.B. Marquez, R.D.S. Papa and S. Ban

Plankton Benthos Res. 11 1 - 7 2016年4月

Inhibition of anaerobic digestion by dissolved lignin derived from alkaline pre-treatment of an aquatic macrophyte 査読国際誌

Koyama, M., S. Yamamoto, K. Ishikawa, S. Ban and T. Toda

Chemical Engineering Journal 311 55 - 62 2016年4月

Enhancing anaerobic digestibility of lignin-rich submerged macrophyte using thermochemical pre-treatment 査読

Koyama, M., S. Yamamoto, K. Ishikawa, S. Ban, T. Toda

Biochem. Eng. J. 2015年4月

Characterization and mosquitocidal potential of neem cake-synthesized silver nanoparticles: genotoxicity and impact on predation efficiency of mosquito natural enemies 査読国際誌

Chandramohan, B., K. Murugan, C. Panneerselvam, P. Madhiyazhagan, R. Chandirasekar, D. Dinesh, P.M. Kumar, K. Kovendan, U. Suresh, J. Subramaniam, R. Rajaganesh, A.T. Aziz, S. Ban, M.S. Alsalhi, S. Devanesan, M. Nicoletti, H. Wei and G. Benelli

Parasitol. Res. 2015年4月

Fighting arboviral diseases: low toxicity on mammalian cells, dengue growth inhibition (in vitro), and mosquitocidal activity of Centroceras clavulatum-synthesized silver nanoparticles 査読国際誌

Murugan, K., P. Aruna, C. Panneerselvam, P. Madhiyazhagan, M. Paulpandi, J. Subramaniam, R. Rajaganesh, H. Wei, M.S. Alsalhi, S. Devanesan, M. Nicoletti, S. Ban, A. Canale and G. Benelli

Parasitol. Res. 2015年4月

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