Skip to main content

14 Result(s)

within Yukinori Tani Remove this filter

and

  1. No Access

    Article

    Implication of atmospheric nutrient inputs and warming effects for the ecosystem of Lake Yamanaka, Japan, revealed by sedimentary analysis

    To reconstruct the historical trend of lake productivity and trophic status in mountain lakes over the past 60 years, we examined the diatom and cladoceran zooplankton remains, fossil pigments, and organic geo...

    Shinya Yamamoto, Michinobu Kuwae, Narumi Tsugeki, Yukinori Tani in Hydrobiologia (2023)

  2. No Access

    Article

    Sorption of Pu(IV) on biogenic Mn oxide and complexation of Pu(IV) with organic ligands secreted by fungal cells

    We investigated the sorption of Pu(IV) on biogenic Mn oxide, composed of Mn(IV) oxide and hyphae, produced by Mn(II)-oxidizing fungus. The sorption of Pu(IV) on biogenic Mn oxide was similar to that of U(VI) a...

    Kazuya Tanaka, Yukinori Tani, Naofumi Kozai… in Journal of Radioanalytical and Nuclear Che… (2022)

  3. No Access

    Article

    Temporal variations in phytoplankton biomass over the past 150 years in the western Seto Inland Sea, Japan

    We examined fossil pigments in a 210Pb-dated sediment core to document the temporal variations in phytoplankton biomass over the past 150 years in a semi-enclosed bay, Beppu Bay, in the western Seto Inland Sea, J...

    Narumi K. Tsugeki, Michinobu Kuwae, Yukinori Tani, **nyu Guo… in Journal of Oceanography (2017)

  4. No Access

    Article

    Eutrophication of mountain lakes in Japan due to increasing deposition of anthropogenically produced dust

    Atmospheric dust has wide-reaching effects, not only influencing climate conditions, but also ecosystems. The eastern region of the Asian continent is one of the largest emitters of dust in the world, and rece...

    Narumi K. Tsugeki, Tetsuro Agusa, Shingo Ueda, Michinobu Kuwae… in Ecological Research (2012)

  5. No Access

    Article

    Evaluating the Contribution of Long-Range Transport of Heavy Metals from the Asian Continent to Their Concentrations in Sediment Cores from Lake Shinji, Western Japan

    The historical trend of heavy metal pollution recorded in sediment cores from Lake Shinji, western Japan, was investigated to evaluate the contribution of increasing long-range transport of heavy metals from t...

    Kenji Kusunoki, Masahiro Sakata, Yukinori Tani… in Water, Air, & Soil Pollution (2012)

  6. No Access

    Article

    Holocene paleolimnological changes in Lake Skallen Oike in the Syowa Station area of Antarctica inferred from organic components in a sediment core (Sk4C-02)

    Antarctic climate changes influence environmental changes at both regional and local scales. Here we report Holocene paleolimnological changes in lake sediment core Sk4C-02 (length 378.0 cm) from Lake Skallen ...

    Genki I. Matsumoto, Yukinori Tani, Koji Seto, Tomoko Tazawa… in Journal of Paleolimnology (2010)

  7. No Access

    Article

    Sedimentary Steryl Chlorin Esters (SCEs) and Other Photosynthetic Pigments as Indicators of Paleolimnological Change Over the Last 28,000 Years from the Buguldeika Saddle of Lake Baikal

    Detailed depth profiles of photosynthetic pigments in a sediment core (G-12) collected at the BDP93 site, the Buguldeika saddle, of south Lake Baikal, along with depth profiles of total organic carbon (TOC) an...

    Yuko Soma, Yukinori Tani, Mitsuyuki Soma, Hideo Mitake… in Journal of Paleolimnology (2007)

  8. No Access

    Article

    Sterol composition of steryl chlorin esters (SCEs) formed through grazing of algae by freshwater crustaceans: relevance to the composition of sedimentary SCEs

    In a laboratory experiment, we studied the composition of sterols in steryl chlorin esters (SCEs) egested in fecal pellets of freshwater crustaceans (Daphnia magna and Asellus hilgendorfi) fed on a single green a...

    Yuko Soma, Nobuyasu Itoh, Yukinori Tani, Mitsuyuki Soma in Limnology (2005)

  9. No Access

    Article

    Influence of climate fluctuation on clay formation in the Baikal drainage basin

    Sedimentary cores BDP 96 and 98 and VER 96-2 St. 3 from Academician Ridge in Lake Baikal were investigated to investigate the effect of climatic fluctuations on rock weathering and clay formation in the Baikal...

    Takayuki Sakai, Koji Minoura, Mitsuyuki Soma, Yukinori Tani… in Journal of Paleolimnology (2005)

  10. No Access

    Article

    Sedimentary photosynthetic pigments of algae and phototrophic bacteria in Lake Hamana, Japan: temporal changes of anoxia in its five basins

    We analyzed photosynthetic pigments of algae and bacteria (phototrophic sulfur bacteria: Chromatium and brown Chlorobium) in sediment cores and water samples obtained from five basins of Lake Hamana, a brackish, ...

    Nobuyasu Itoh, Yukinori Tani, Mitsuyuki Soma in Limnology (2003)

  11. No Access

    Article

    Phototrophic activity and redox condition in Lake Hamana, Japan, indicated by sedimentary photosynthetic pigments and molybdenum over the last ∼250 years

    We analyzed photosynthetic pigments, total organic carbon (TOC), biogenic silica, and Mo, a redox-sensitive element, in 210Pb-dated sediment cores to reconstruct the historical changes in primary productivity and...

    Nobuyasu Itoh, Yukinori Tani, Takayuki Nagatani… in Journal of Paleolimnology (2003)

  12. No Access

    Chapter

    Residual Photosynthetic Pigments in the Sediment of Lake Baikal as Indicators of Phytoplankton History

    Phytoplankton photosynthetic pigments preserved in lake sediments provide important information about the past environment of the lake as it affected the distribution of phytoplankton. This review chapter demo...

    Mitsuyuki Soma, Yuko Soma, Yukinori Tani… in Long Continental Records from Lake Baikal (2003)

  13. No Access

    Article

    Acid Dissolution of Olivines, Feldspars and Dunite

    We have treated feldspars (orthoclase, albite, anorthite), JF-1 (a mixture of orthoclase and albite), olivines (fayalite, forsterite) and JP-1 (dunite: an olivine-rich rock) with HNO3 solution at pH 2 for 10 – 12...

    Mayumi Kobayashi, Akira Sawada, Yukinori Tani… in Water, Air, and Soil Pollution (2001)

  14. No Access

    Article

    Alkali metal ion-selective electrodes based on relevant alkali metal ion doped manganese oxides

    Potentiometric properties of manganese oxides doped with alkali metal ions (Na+, K+, Rb+ and Cs+), which were prepared by heating mixed solutions (starting solution) of each alkali metal and Mn2+ ions, were exami...

    Yukinori Tani, Yoshio Umezawa in Microchimica Acta (1998)