PEOPLE

Principal Investigator

Brett Walker

Associate Professor

Department of Earth System Science, UC Irvine

Google Scholar, ResearchGate, ORCID

Current Lab Members

Aislinn Fox

PhD Candidate (2021- present)
foxae (at) uci.edu

Pan-Canadian sources and cycling of particulate organic matter using radiocarbon and stable isotopes

Ava McIlvaine

PhD student (2024- present)
amcilvai (at) uci.edu

Isotopic and Molecular Characterization of Dissolved Organic Molecules in the Pan-Canadian Arctic

Makayla Ward

PhD student (2024- present)
makaylw1 (at) uci.edu

Testing the marine microbial carbon pump using carbon and nitrogen isotopes of high-resolution size fractions across the organic matter size continuum

Megha Rudresh

Assistant Specialist
rmegha (at) uci.edu

Amber Canty

Honors BSc (2024-present), UCI
Dissolved Inorganic Carbon Isotopic Composition and Cycling in the Eurasian Basin, Arctic Ocean.

Ai Taguchi

(2026-present), UCI

POM Cycling in Coastal Greenland.

Former Lab Members

Taylor Hart

Honors BSc (2023-2026), UCI

[co-advised with Ellen Druffel]

Sedimentary Organic Carbon Cycling in the Santa Clara River Estuary.

Niels Hauksson

Current Position: Teaching Laboratory Director @ Claremont McKenna College
nhauksson (at) cmc.edu

Fate and transformation of Petrogenic DOM and POM from Surface Oil Seeps in a Coastal California River System
*Currently Teaching Laboratory Director at Claremont McKenna College

Sabrina Vargas

Honors BSc (2025), UCI

Evaluating Biomarkers Present in the Pacific Ocean Using Novel Proton (1H) Nuclear Magnetic Resonance (NMR) Spectroscopy

*Currently MSc student at San Diego State

Shayna Dehaan

Honors BSc (2023), University of Ottawa

1H-NMR Evidence for the Cycling of Labile and Recalcitrant Compound Classes in the Ocean
*currently (perpetually?) a world traveler

Liam Jasperse

MSc (2024), University of Ottawa

Thesis: Evaluating the biogeochemistry of dissolved inorganic carbon in the Canadian Arctic Archipelago using stable and radiocarbon isotopes
*currently at André E. Lalonde AMS Facility

Kayla McKee

MSc (2024), University of Ottawa

Thesis: Cycling of bioavailable carboxyl-rich alicyclic molecules and carbohydrates in Baffin Bay
*currently at André E. Lalonde AMS Facility

Shanie Nikolajew

Honors BSc (2023), University of Ottawa

[co-advised with Clement Bataille]

Thesis: Radiocarbon and stable isotopes as tracers of Narwhal migration and foraging behavoir in the Canadian Arctic

Lauren O'Reilly

MSc (2024), University of Ottawa

Thesis: Pan-Canadian Arctic cycling of marine dissolved organic carbon and nitrogen

Ewan Smith

Honors BSc (2024), University of Ottawa

Thesis: Cycling of Marine Carboxylic-Rich Alicyclic Molecules (CRAM) in the Southern Ocean and Beyond

Sara Zeidan

MSc (2021), University of Ottawa

Thesis: Radiocarbon (∆14C) and stable carbon (δ13C) isotopic composition of dissolved inorganic carbon (DIC) in Baffin Bay

Currently at Health Canada

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