Jack Eschenroeder

Fisheries Biologist

Jack is a fisheries biologist with experience in a variety of freshwater systems, including delta and coastal environments. He has coordinated field monitoring programs in the Salinas, Carmel, and Guadalupe River watersheds. Jack is proficient in a wide range of methodologies, including the use of unmanned aerial systems (UAS), passive integrated transponder (PIT) tag antenna systems, eDNA and genetic techniques, automated fish passage monitoring systems, and acoustic telemetry transmitters, including JSATS acoustic tags in juvenile salmon. His sampling experience also encompasses boat, backpack, and barge electrofishing; hook-and-line sampling; Kodiak, midwater, oblique, and benthic trawls; and trammel, drift, gill, fyke, hoop, and seine nets.

Jack is experienced in the use of R statistical software to conduct analyses and create data visualizations, as well as GIS software for analyzing spatial data and creating maps. He regularly writes reports and develops communication materials for multiple websites and social media platforms operated by FISHBIO. Jack holds a master’s degree in biology from Georgia Southern University, where he studied the studied hybridization of an endemic freshwater fish species with an invasive congeneric relative, and assessed the effects of anthropogenic alterations of the watershed on contemporary genetic diversity.

Featured Projects

Selected Reports and Publications

Eschenroeder, J.C., M.L. Peterson, M. Hellmair, T.J. Pilger, D. Demko, and A. Fuller. 2022. Counting the parts to understand the whole: Rethinking monitoring of steelhead in California’s Central Valley. San Francisco Estuary and Watershed Science, 20(1). DOI: 10.15447/sfews.2022v20iss1art2

Loury, E.K., J.C. Eschenroeder, L. Seat, S. Chea; C. Chhut; S. Kritsanavarin; S. Lovgren, E.G. Ramsay, D. Thao, and Z.S. Hogan. 2021. Communicating for aquatic conservation in Cambodia and beyond: Lessons learned from in-person and media-based environmental education and outreach strategies. Water, 13, 1853. DOI: 10.3390/w13131853

Eschenroeder, J. C., and Roberts, J. H. 2019. Habitat loss, fragmentation, and the genetic status of Roanoke bass. Canadian Journal of Fisheries and Aquatic Sciences. 999: 1-13. DOI: 10.1139/cjfas-2019-0103

Eschenroeder, J.C., and Roberts, J.H. 2018. What role has hybridization played in the replacement of native Roanoke bass with invasive rock bass? Transactions of the American Fisheries Society. 147: 497-513. DOI: 10.1002/tafs.10056

Eschenroeder, J.C., and Roberts, J.H. 2016. Novel polymorphic loci for distinguishing Rock bass (Ambloplites rupestris), Roanoke bass (Ambloplites cavifrons), and their hybrids. Molecular Biology Reports. 43(10): 1035-1039. DOI: 10.1007/s11033-016-4049-0

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