Anthropogenic hypoxia in the northern Gulf of Mexico is a chronic problem generally stemming from excessive riverine nutrient loading and thermal stratification. Dr. Benjamin Walther and I are working towards an understanding of the potential sub-lethal effects of exposure to hypoxia in mobile fishes. Using geochemical proxies of hypoxia recorded in otoliths of Atlantic croaker (Micropogonias undulatus), we plan to quantify hypoxia exposure and subsequently determine if exposure to hypoxia leads to differential growth and survival in this species.
This work is also part of a larger collaborative effort to characterize the sub-lethal effects of hypoxia exposure on mobile fishes across the largest anthropogenically derived hypoxic zones in the world. These areas (in addition to the northern Gulf of Mexico), include the Baltic Sea and Lake Erie where the study species are the Baltic cod (Gadus morhua) and yellow perch (Perca flavescens) respectively. We are working closely with Dr. Karin Limburg (SUNY ESF) and Dr. Zunli Lu (Syracuse University) to develop an understanding of such sub-lethal effects across basins and species.
For more information on this project please visit,
Walther Lab Page
Project "Hypoxolith" Website
Texas A&M University-Corpus Christi