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.

Taylor Hart

Honors BSc (2023-2026), UCI

[co-advised with Ellen Druffel]

Sedimentary Organic Carbon Cycling in the Santa Clara River Estuary.

Ai Taguchi

(2026-present), UCI

POM Cycling in Coastal Greenland.

Former Lab Members

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

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

Liam Jasperse

MSc (2024), University of Ottawa

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

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

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

*currently Ph.D. student at Dalhousie University

Ewan Smith

Honors BSc (2024), University of Ottawa

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

Sara Zeidan

MSc (2021), University of Ottawa

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

Currently at Health Canada

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