Doctoral Thesis with IFOP data
26 August, 2022

Doctoral Thesis with IFOP data

October 24th, 2022 Periodista Gabriela.Gutiérrez

“Predatory interactions and environmental variability as control mechanisms for euphausiids abundance and diversity in Humboldt Current System”

On Monday, August 22nd, at 10 am, Macarena Díaz Astudillo successfully presented at Universidad de Concepción her Ph.D. degree thesis in oceanography.

His thesis called “Predatory interactions and environmental variability as control mechanisms for the abundance and diversity of euphausiids in the Humboldt Current System” raises questions about the environmental influence on the planktonic dynamics of euphausiids and their link with anchoveta del north of Chile.

Dr. Jaime Letelier, head of Oceanography and Environment Department and evaluation committee member, pointed out that this high-level investigation, with two international publications, allowed to give a new value to IFOP historical samples using state-of-the-art technology such as a ZooScan and a new point of view to re-examine what we currently know and take for granted about our marine ecosystems.

Dr. Ramiro Riquelme-Bugueño, Academician of the Natural and Oceanographic Sciences Faculty of Uiversidad de Concepción, mentioned that Dr. Díaz’s research “is pioneering in contributing to a better understanding of the larger-scale climatic impacts on a key component of the marine ecosystem off the coast of Chile such as euphausiids, popularly known as krill. In addition, the thesis points to one of the most unknown aspects in this group of organisms, which is the predator-prey interaction between them and the anchoveta. In this sense, Dr. Díaz makes a very original and pertinent contribution to ecological, ecosystemic, fishing and environmental interests that will undoubtedly be a frequently referenced piece of study”

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