New paper on amino acid isotope analysis (Ohkouchi et al., Organic Geochemistry)

Advances in the application of amino acid nitrogen isotopic analysis in ecological and biogeochemical studies Naohiko Ohkouchi1,*, Yoshito Chikaraishi1,13, Hilary G. Close2, Brian Fry3, Thomas Larsen4, Daniel J. Madigan5, Matthew D. McCarthy6, Kelton W. McMahon7, Toshi Nagata8, Yuichi I. Naito1,14, Nanako O. Ogawa1, Brian N. | Click for More →

Impacts of internal waves on the twilight zone @ ICRS 2016, Hawaii (Dr Wyatt)

Ecological and biogeochemical impacts of internal waves on mesophotic coral ecosystems: testing eddy correlation and isotope approaches, Iriomote, Japan Alex S.J. Wyatt1*, Toshihiro Miyajima1, James J. Leichter2, Tohru Naruse3, Tomohiro Kuwae4, Shoji Yamamoto5, Naomi Satoh1, Toshi Nagata1 1Department of Chemical Oceanography, Atmosphere and Ocean Research | Click for More →

Adding to our isotope axes @ IsoEcol 2016 (Dr Wyatt)

Amino acid and radiocarbon insights from captive whale sharks Alex S.J. WYATT1*, Rui Matsumoto2, Yoshito Chikaraishi3, Yosuke Miyari1, Yusuke Yokoyama1, Keiichi Sato2, Nao Ohkouchi3, Toshi Nagata1 1Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba, JAPAN 2Okinawa Churaumi Aquarium, Motobu, Okinawa, JAPAN 3Japan Agency | Click for More →

Isotopic tools for planktivorous megafauna @ ASLO 2015 (Dr Wyatt)

Isotopic Tools for Assessing Oceanic Versus Reef-Scale Drivers of Planktivorous Megauna Aggregations Alex S.J. WYATT1*, Rui Matsumoto2, Yoshito Chikaraishi3, Keiichi Sato2, Nao Ohkouchi3, Toshi Nagata1 1Marine Biogeochemistry Laboratory, Department of Chemical Oceanography, Atmosphere & Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba, JAPAN. 2Okinawa | Click for More →

Isotope discrimination in captive whale sharks @ IsoEcol 2014 (Dr Wyatt)

Isotope Discrimination in Planktivorous Elasmobranchs Focusing on the World’s Largest Fish, Captive Whale Sharks Rhincodon typus Alex S.J. WYATT1* Rui Matsumoto2 Yoshito Chikaraishi3 Keiichi Sato2 Nao Ohkouchi3 Toshi Nagata1 1Marine Biogeochemistry Laboratory, Department of Chemical Oceanography, Atmosphere & Ocean Research Institute, The University of Tokyo, | Click for More →

Ecosystem inputs and recycling over coral reefs @ 3rd APCRS, 2014 (Dr Wyatt)

Functional understanding of ecosystem-scale inputs and recycling over coral reef communities from stable isotope analyses of organic matter Alex S.J. Wyatt1*, James J. Leichter2, Benoit Thibodeau1, Toshihiro Miyajima1, Craig A. Carlson3, Craig E. Nelson4, Toshi Nagata1 1Marine Biogeochemistry Laboratory, Department of Chemical Oceanography, Atmosphere & | Click for More →

Formation and maintenance of high-nitrate, low pH layers (Waite et al., Biogeosciences)

Formation and maintenance of high-nitrate, low pH layers in the eastern Indian Ocean and the role of nitrogen fixation A. M. Waite, V. Rossi, M. Roughan, B. Tilbrook, P. A. Thompson, M. Feng, A. S. J. Wyatt, and E. J. Raes We investigated the biogeochemistry of low dissolved oxygen high-nitrate (LDOHN) layers forming against the backdrop of several | Click for More →

DON isotopes over a coral reef (Thibodeau et al., Coral Reefs)

Heterogeneous dissolved organic nitrogen supply over a coral reef: first evidence from nitrogen stable isotope ratios B. Thibodeau, T. Miyajima, I. Tayasu, A. S. J. Wyatt, A. Watanabe, N. Morimoto, C. Yoshimizu, T. Nagata Dissolved organic nitrogen (DON) potentially plays a major role in sustaining | Click for More →

Coral reef POM dynamics (Wyatt et al., L&O)

Particulate nutrient fluxes over a fringing coral reef: Source-sink dynamics inferred from carbon to nitrogen ratios and stable isotopes Alex S. J. Wyatt, Ryan J. Lowe, Stuart Humphries and Anya M. Waite We examined spatial and temporal variations in particulate organic matter (POM) dynamics over a | Click for More →

Reef fish trophodynamics (Wyatt et al., Coral Reefs)

Stable isotope analysis reveals community-level variation in fish trophodynamics across a fringing coral reef A. S. J. Wyatt, A. M. Waite, S. Humphries In contrast to trophodynamic variations, the marked zonation in physical and biological processes across coral reefs and the concomitant changes in habitat | Click for More →