Search Results - "Ohta, Tamihisa"

Root exudation of low-molecular-mass-organic acids by six tree species alters the dynamics of calcium and magnesium in soil by Ohta, Tamihisa, Hiura, Tsutom

“…Soils in plantations of Cryptomeria japonica in Japan have ~threefold more exchangeable Ca compared with soils in other types of forest vegetation even in a…”
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Are hatchery chum salmon fry a native invader? Direct and indirect effects of stocking salmon fry on stream organisms by Hasegawa, Koh, Ohta, Tamihisa, Takahashi, Satoru

“…Native species may show invasiveness toward a recipient ecosystem through increases in abundance as a result of artificial stocking events. Salmonid species…”
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Effects of geological conditions and atmospheric deposition on soil biogeochemical properties in Japanese forested ecosystems revealed by Sr isotope analysis by Urakawa, Rieko, Ohta, Tamihisa, Shin, Ki-Cheol, Sase, Hiroyuki, Shibata, Hideaki, Chikamasa, Takaya, Nakano, Takanori

“…The radiogenic strontium (Sr) isotope ratio ( 87 Sr/ 86 Sr) is a valuable tracer of cation dynamics in ecosystems, and has been used as a proxy for geological…”
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A test of the effects of timing of a pulsed resource subsidy on stream ecosystems by Sato, Takuya, El-Sabaawi, Rana W., Campbell, Kirsten, Ohta, Tamihisa, Richardson, John S.

“…1. Spatial resource subsidies can alter bottom-up and top-down forces of community regulation across ecosystem boundaries. Most subsidies are temporally…”
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The Effects of Differences in Vegetation on Calcium Dynamics in Headwater Streams by Ohta, Tamihisa, Shin, Ki-Cheol, Saitoh, Yu, Nakano, Takanori, Hiura, Tsutom

“…Although organisms can alter dynamics of elements in ecosystems via physiological results, the effects of tree species on ecosystem nutrient dynamics are…”
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Adaptive significance of arboreality: field evidence from a tree-climbing land snail by Saeki, Ikuyo, Niwa, Shigeru, Osada, Noriyuki, Hyodo, Fujio, Ohta, Tamihisa, Oishi, Yoshitaka, Hiura, Tsutom

“…Arboreality has evolved in a wide range of taxa, but its adaptive significance has rarely been examined in natural ecosystems. Euhadra brandtii sapporo is an…”
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Detritivore stoichiometric diversity alters litter processing efficiency in a freshwater ecosystem by Ohta, Tamihisa, Matsunaga, Sou, Niwa, Shigeru, Kawamura, Kimitaka, Hiura, Tsutom

“…Many studies have estimated relationships between biodiversity and ecosystem functioning, and observed generally positive effects. Because detritus is a major…”
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Calcium concentration in leaf litter affects the abundance and survival of crustaceans in streams draining warm-temperate forests by Ohta, Tamihisa, Niwa, Shigeru, Hiura, Tsutom

“…Summary Stream ecosystems receive large quantities of nutrients from terrestrial ecosystems that influence community dynamics. However, few studies have…”
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Calcium concentration in leaf litter alters the community composition of soil invertebrates in warm-temperate forests by Ohta, Tamihisa, Niwa, Shigeru, Agetsuma, Naoki, Hiura, Tsutom

“…Many studies have shown the effects of aboveground plant species on soil organisms due to differences in litter quality. However, the calcium concentration in…”
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Lead and Cadmium Tolerance and Accumulation of Proanthocyanidin-Deficient mutants of the Fern Athyrium yokoscense by Kamachi, Hiroyuki, Morishita, Kazunori, Hatta, Manami, Okamoto, Ayaka, Fujii, Kazuma, Imai, Naoki, Sakatoku, Akihiro, Ohta, Tamihisa, Aoki, Mana, Hiyama, Sakurako

“…The fern Athyrium yokoscense often flourishes around mine sites in Japan and can tolerate and accumulate heavy metals such as lead (Pb) and cadmium (Cd). In…”
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Light intensity regulates growth and reproduction of a snail grazer (Gyraulus chinensis) through changes in the quality and biomass of stream periphyton by OHTA, TAMIHISA, MIYAKE, YO, HIURA, TSUTOM

“…Summary 1. The light : nutrient hypothesis (LNH) proposes that herbivore growth rates are maximised at intermediate light‐to‐nutrient ratios. A reduction to…”
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Water Adsorption to Leaves of Tall Cryptomeria japonica Tree Analyzed by Infrared Spectroscopy under Relative Humidity Control by Azuma, Wakana A., Nakashima, Satoru, Yamakita, Eri, Ohta, Tamihisa

“…Leaf water storage is a complex interaction between live tissue properties (anatomy and physiology) and physicochemical properties of biomolecules and water…”
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Food habits of introduced brown trout and native masu salmon are influenced by seasonal and locational prey availability by Hasegawa, Koh, Yamazaki, Chitose, Ohta, Tamihisa, Ohkuma, Kazumasa

“…A knowledge of food habits is important for evaluating interspecific competition and predation between sympatric species. Data on food availability should be…”
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The effects of functional differences in cultivar of Cryptomeria japonica on nutrient dynamics and soil invertebrates in a common garden by Ohta, Tamihisa, Hiura, Tsutom

“…Recently, some studies have established the ecological effects of intraspecific variation in phytochemical traits on soil ecosystems. Because plantations…”
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Partial mycoheterotrophy in the leafless orchid Cymbidium macrorhizon by Suetsugu, Kenji, Ohta, Tamihisa, Tayasu, Ichiro

“…Premise of the Study The evolution of full mycoheterotrophy is one of the most interesting topics within plant evolution. The leafless orchid Cymbidium…”
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Estimation of tributary–mainstem migration of freshwater fishes by Sr isotope analysis of otoliths by Ohta, Tamihisa, Sueyoshi, Masanao, Shima, Momoko, Ida, Shinichiro, Iizuka, Tsuyoshi

“…The study of fish movement patterns in freshwater ecosystems remains a major focus of contemporary research. Small freshwater fish are known to migrate between…”
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Erratum: Root exudation of low-molecular-mass-organic acids by six tree species alters the dynamics of calcium and magnesium in soil by Ohta, Tamihisa, Hiura, Tsutom

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Effects of paddy irrigation-drainage system on water quality and productivity of small rivers in the Himi region of Toyama, Central Japan by Sazawa, Kazuto, Komiyama, Tomoka, Tsuchida, Takafumi, Taguchi, Riku, Nakashima, Fumiaki, Ohta, Tamihisa, Nishio, Masaki, Yamazaki, Yuji, Kuramitz, Hideki

“…The aim of this study was to clarify the impact of differences between historical and recently introduced irrigation and drainage management systems on water…”
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Partial mycoheterotrophy in the leafless orchid Eulophia zollingeri specialized on wood-decaying fungi by Suetsugu, Kenji, Ohta, Tamihisa, Tayasu, Ichiro

“…Although the absence of normal leaves is often considered a sign of full heterotrophy, some plants remain at least partially autotrophic despite their leafless…”
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Effects of distance from the sea and bedrock on foliar mineral contents in Japanese forests: Implications for mineral acquisition by folivores by Hanya, Goro, Kato, Shogo, Kitamura, Shumpei, Kurihara, Yosuke, Honda, Takeaki, Suzumura, Takafumi, Ohta, Tamihisa

“…Minerals are among the important nutritional components that are indispensable for animals. In particular, the acquisition of sodium is important for…”
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