Yoshito Chikaraishi
Hokkaido University
ChemistryEcologyAmino acidTrophic levelBiology
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Publications 151
#1Yoshihiro Furukawa (Tohoku University)H-Index: 9
#2Yoshito Chikaraishi (Hokkaido University)H-Index: 32
Last. Tomoki Nakamura (Tohoku University)H-Index: 33
view all 8 authors...
Sugars are essential molecules for all terrestrial biota working in many biological processes. Ribose is particularly essential as a building block of RNA, which could have both stored information and catalyzed reactions in primitive life on Earth. Meteorites contain a number of organic compounds including key building blocks of life, i.e., amino acids, nucleobases, and phosphate. An amino acid has also been identified in a cometary sample. However, the presence of extraterrestrial bioimportant ...
6 CitationsSource
#1Jonathan N. Pauli (UW: University of Wisconsin-Madison)H-Index: 16
#2Philip J. Manlick (UW: University of Wisconsin-Madison)H-Index: 4
Last. Shawn A. Steffan (UW: University of Wisconsin-Madison)H-Index: 20
view all 17 authors...
Abstract Quantifying resource partitioning is central to community and food web ecology and of increasing interest in an era of rapid global change disrupting biotic interactions. Multichannel feeding – consuming resources from both green and brown food webs – can be a stabilizing force in communities. While multichannel feeding has been well-documented in invertebrate and aquatic systems, it has been relatively under-studied in terrestrial vertebrate populations. Applied ecologists are seeking ...
#1Sara K. E. Goulden (UC Davis: University of California, Davis)
#2Naohiko Ohkouchi (JAMSTEC: Japan Agency for Marine-Earth Science and Technology)H-Index: 41
Last. Benjamin Z. Houlton (UC Davis: University of California, Davis)H-Index: 25
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Abstract. Nitrogen (N) availability influences patterns of terrestrial productivity and global carbon cycling, imparting strong but poorly resolved feedbacks on Earth's climate system. Central questions concern the timescale of N cycle response to elevated CO2 concentration in the atmosphere and whether availability of this limiting nutrient increases or decreases with climate change. Nitrogen isotopic composition of bulk plant leaves provides information on large-scale patterns of N availabilit...
Abstract As pollen and nectar foragers, bees have long been considered strictly herbivorous. Their pollen provisions, however, are host to abundant microbial communities, which feed on the pollen before and/or while it is consumed by bee larvae. In the process, microbes convert pollen into a complex of plant and microbial components. Since microbes are analogous to metazoan consumers within trophic hierarchies, the pollen-eating microbes are, functionally, herbivores. When bee larvae consume a m...
1 CitationsSource
#1Riko Takeuchi (Tokyo University of Pharmacy and Life Sciences)
#2Yoshito Chikaraishi (Hokkaido University)H-Index: 32
Last. Hidetoshi Kumata (Tokyo University of Pharmacy and Life Sciences)H-Index: 15
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#1Yu Itahashi (UTokyo: University of Tokyo)H-Index: 2
#2Yılmaz Selim Erdal (Hacettepe University)H-Index: 11
Last. Minoru Yoneda (UTokyo: University of Tokyo)H-Index: 26
view all 8 authors...
#1Alex S. J. Wyatt (UTokyo: University of Tokyo)H-Index: 11
#2Rui MatsumotoH-Index: 1
Last. Toshi Nagata (UTokyo: University of Tokyo)H-Index: 33
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2 CitationsSource
#1Kaycee E. Morra (MSU: Michigan State University)H-Index: 1
#2Yoshito Chikaraishi (Hokkaido University)H-Index: 32
Last. Peggy H. Ostrom (MSU: Michigan State University)H-Index: 34
view all 9 authors...
We investigated how foraging habits vary among three ecologically distinct wide-ranging seabirds. Using amino acid δ15N proxies for nutrient regime (δ15NPhe) and trophic position (Δδ15NGlu-Phe), we compared Newell’s shearwater (Puffinus newelli) and Laysan albatross (Phoebastria immutabilis) foraging habits over the past 50–100 years, respectively, to published records for the Hawaiian petrel (Pterodroma sandwichensis). Standard ellipses constructed from the isotope proxies show that inter-popul...
1 CitationsSource
#1Haruna Sugahara (CNRS: Centre national de la recherche scientifique)H-Index: 2
#2Yoshinori Takano (JAMSTEC: Japan Agency for Marine-Earth Science and Technology)H-Index: 19
Last. Hisayoshi Yurimoto (Hokkaido University)H-Index: 48
view all 9 authors...
#1Takashi Korenaga (Chiba Institute of Science)H-Index: 20
#2Yaeko Suzuki (National Agriculture and Food Research Organization)
Last. Yoshito Chikaraishi (Hokkaido University)H-Index: 32
view all 3 authors...
Abstract During the last few decades, Japanese nation and consumers have required the study using stable isotope analysis of five major biochemical elements: hydrogen (D/H), carbon (13C/12C), nitrogen (15N/14N), oxygen (18O/16O), and sulfur (34S/32S), in beverages and foods to produce a chemical tool for the inspection against convincing disguises in the food authenticity. Such studies have been accelerated by recent advances in isotope ratio mass spectrometry (IRMS) and cavity ring-down spectro...