Fighting for the little guy. That’s one of the things Jess Diallo, PhD candidate at SAFS, likes about her work. Her research encapsulates this idea as she explores the impact of invasive fish on native fish food webs, based in a tributary to the lower Colorado River.
Part of Julian Olden’s Freshwater Ecology and Conservation Lab, Jess’ fieldwork in 2021 involved collecting samples for stable isotope analysis, including fish eye lenses, to provide a deeper look into how fish move throughout the food web. 

SAFS PhD student, Arial Brewer, joins the Oregon Public Broadcasting ‘Think Out Loud’ series to share her research into the impact of ship noise on Alaska’s Cook Inlet beluga whales. 

With contributions from SAFS scientists including Jackie Padilla-Gamiño, Corey Garza and Xochitl Clare, Oceanography’s special issue addresses structural and cultural obstacles encountered by underrepresented and marginalized scholars. 

Recently completing her PhD focused on marine mammals in Greenland, Marie Zahn’s work in the Arctic provides a deeper look into two species: narwhals and belugas.
Conducting her research at the School of Aquatic and Fishery Sciences (SAFS) as a member of the Laidre Lab, Marie explored the marine habitat and sounds produced by narwhals and belugas using oceanographic and acoustic data collected from West Greenland. 

New research led by SAFS doctoral student, Arial Brewer, documents the vocal repertoire of Cook Inlet beluga whales for the first time. 

For over 60 years, the Alaska Department of Fish and Game have collected scales from sockeye salmon in Bristol Bay. Now, these scales are receiving special treatment in a new project led by SAFS graduate student Grace Henry, who is conducting stable isotope analysis to examine how food webs in the North Pacific Ocean have changed since the 1960s.
Chemistry has always been Grace’s biggest interest: “I love chemistry, and for me, it’s the cornerstone of ecological science.” Working with stable isotopes in her pre-graduate studies, Grace wanted to use this method during her thesis work on food webs using historical archived samples. 

Watch Part 2 of a summer with the Alaska Salmon Program, now live, featuring the students who are essential to the program. 

In the largest freshwater lake in southeast Asia, Shorna Sabikunnahar is looking into the ecological and environmental drivers of toxic metals in resident fish.
Conducting her research on Tonle Sap Lake in Cambodia, which is part of the Mekong River system, Shorna is a SAFS PhD student in the Holtgrieve Ecosystem Ecology Lab (HEEL). Designated as a Biosphere Reserve by UNESCO, Tonle Sap Lake is one of the most diverse and productive ecosystems on the globe. 

Understanding how obligate freshwater organisms colonize seemingly isolated ecosystems has long fascinated ecologists, with new research co-authored by Flavien Garcia and Julian Olden demonstrating possible bird-mediated colonization of lakes by European perch. 

Recently featured in Hakai Magazine’s article “All The Fish We Cannot See”, SAFS PhD student Helena McMonagle is conducting a deep dive into a hidden cache of fish that might play an unexpected role in how the ocean sequesters carbon. We caught up with Helena to find out more about it.
Since starting this research in 2019, I’ve been using data collected at sea and in the lab, along with bioenergetic models, to estimate how much carbon these mesopelagic fish, such as lanternfish, transport from surface waters into the twilight zone.