Dave Chagaris

Contact Information

David Chagaris, PhD   dchagaris@ufl.edu

Research Assistant Professor

University of Florida IFAS Nature Coast Biological Station

Mailing: 136 Newins-Ziegler Hall, P.O. Box 110410, Gainesville, FL 32611

Office: G104 McCarty Hall B       Phone: 352-294-7844


PhD Fisheries and Aquatic Sciences, 2013                 University of Florida, Gainesville, FL

M.S. Biology, 2006                                                          East Carolina University, Greenville, NC

B.S. Biology, 2002                                                           East Carolina University, Greenville, NC

Research Focus

The research conducted in my lab aims to understand how fisheries resources and marine ecosystems respond to fishing and environmental change. The overall goal of this work is to provide information and tools that enable managers, scientists, and stakeholders to become better stewards of our shared natural resources. In my lab we develop population dynamic and ecosystem models that include environmental drivers, food web dynamics, and habitat interactions.

Those models are then used to improve population assessments, screen policy options for unintended consequences, evaluate ecosystem effects of natural and anthropogenic perturbations, and develop new management reference points that account for ecosystem interactions and the uncertainty therein.


Grüss, A., D. D. Chagaris, E. A. Babcock, and J. H. Tarnecki. 2018. Assisting ecosystem-based management efforts using a comprehensive survey database, a large environmental database, and generalized additive models. Marine and Coastal Fisheries 10:40-70.

Chagaris, D., S. Binion-Rock, A. Bogdanoff, K. Dahl, J. Granneman, H. Harris, J. Mohan, M. B. Rudd, M. Swenarton, R. Ahrens, W. F. Patterson III, J. A. Morris, Jr., and M. Allen. 2017. An ecosystem-based approach to evaluating impacts and management of invasive lionfish. Fisheries. 42(8):421-431.

Grüss, A., K. A. Rose, J. Simons, C. H. Ainsworth, E. A. Babcock, D. Chagaris, K. de Mutsert, J. Froeschke, P. Himchak, I. C. Kaplan, H. O’Farrell, M. J. Zetina Rejon. 2017. Recommendations on the use of ecosystem modeling for informing ecosystem-based fisheries management and restoration outcomes in the Gulf of Mexico. Marine and Coastal Fisheries. 9(1):281-295. **2017 Best Paper Award**

Pine, W. E., K. Limburg, B. Gerig, C. Finch, D. Chagaris, L. Coggins, D. Speas, and D.A. Hendrickson. 2017. Growth of endangered Humpback Chub in relation to temperature and discharge in the lower Colorado River. Journal of Fish and Wildlife Management. 8(1):322-332.

Gruss, A., E. A. Babcock, S. R. Sagarese, M. Drexler, D. Chagaris, C. H. Ainsworth, B. Penta, S. d’Rada, and T. Sutton. 2016. Improving the spatial allocation of functional group biomasses in spatially-explicit ecosystem models: insights from three Gulf of Mexico models. Bulletin of Marine Science 92(4):473-496.

Gandy, R. C. Crowley, D. Chagaris, and C. Crawford. 2016. The effect of temperature on release mortality in the Florida stone crab fishery. Bulletin of Marine Science 92(1):1-15. **January 2016 Feature Article**

Grüss, A., M. J. Schirripa, D. Chagaris, L. Velez, Y. Shin, P. Verley, R. Oliveros-Ramos, and C. H. Ainsworth. 2016. Estimating natural mortality and simulating fishing scenarios for Gulf of Mexico red grouper (Epiniphelus morio) using the ecosystem model OSMOSE-WFS. Journal of Marine Systems 154:264-279.

Chagaris, D., B. Mahmoudi, F. Muller-Karger, W. Cooper, K. Fischer. 2015. Temporal and spatial availability of Atlantic Thread Herring, Opisthonema oglinum, in relation to oceanographic drivers and fishery landings on the Florida Panhandle. Fisheries Oceanography 24: 257–273.

Chagaris, D., B. Mahmoudi, C. J. Walters, and M. S. Allen. 2015. Simulating the trophic impacts of fishery policy options on the West Florida Shelf using Ecopath with Ecosim. Marine and Coastal Fisheries 7:44-58. **2015 Best Paper Award**

Grüss, A., M. J. Schirripa, D. Chagaris, M. Drexler, J. Simons, P. Verley, Y. Shin, M. Karnauskas, R. Oliveros-Ramos, and C. H. Ainsworth. 2015. Evaluation of the trophic structure of the West Florida Shelf in the 2000s using the ecosystem model OSMOSE. Journal of Marine Systems 144:30-47.

Christensen, V., M. Coll, J. Steenbeek, J. Buszowski, D. Chagaris, and C. J. Walters. 2014. Representing variable habitat quality in a spatial food web model. Ecosystems 17:1397-1412.

Masi, M. D., C. H. Ainsworth, and D. Chagaris. 2014. A probabilistic representation of fish diet compositions from multiple data sources: a Gulf of Mexico case study. Ecological Modeling 284:60-74.