Associates & Affiliates

Dr. Paul C. Marsh
Owner and PI

Ph.D. 1979, University of Minnesota

Ecology and Conservation of Southwestern Fishes

Dr. Marsh’s research deals broadly with aquatic ecology in the arid southwest, with emphasis on the community of imperiled native fishes of the region (the suite of indigenous taxa occupying a diversity of aquatic habitats in western United States and Mexico). Laboratory investigations supplement a strong field program examining basic life history characteristics and population and community biology. These pursuits go hand-in-hand with applied management in behalf of target species. Activities are strongly collaborative with academia, state and federal resource agencies, non-governmental organizations, and the private sector.

Beverly Ross
General Manager

B.S. Accountancy, National University

Beverly has worked as a contractor for the Native Fish Lab since 2009 and became a full time employee August of 2014. Her love of the outdoors makes her office work easy to be passionate about. She is also the Treasurer of Marsh Education, and dedicated to get Sharing Tails back in Arizona schools.

Brian Kesner
Senior Project Manager

M.S. 2004, James Cook University, Queensland, Australia

Brian is interested in quantitatively assessing the status and trends of ‘big river’ native fish stocks in the Colorado River. His approach uses standard statistical techniques but he also is developing and applying techniques that are unique to the type of data available and the difficulties associated with data for species that are rare and reintroduced. He also likes to get his feet wet occasionally and assists with monitoring programs throughout the Colorado River basin in Arizona and farther a field. Brian has worked with Dr. Marsh and the Native Fish Lab since 1998.

Carol Pacey
Project Manager

M.S. 1996, Texas A&M University

Ms. Pacey has been with the Native Fish Lab since 1998 and plays multiple roles within the organization. She developed and presents statewide the wildly successful “Sharing Tails” educational program that teaches kindergarten and early elementary school children about native Arizona fishes (see the link above and on our home page). She also is responsible for primary maintenance of the lower Colorado River native fishes PIT tag mark and recapture database and analyzes and interprets field data for reports and publications. When not too busy with other duties she assists with field and laboratory work, makes presentations to professional groups, attends meetings, and interacts with M&As myriad cooperators.

Aaron Burgad
Fisheries Biologist

B.S. 2014, Valley City State University

M.S. 2018

Aaron began with the Native Fish Lab in September 2014. He assisted with all field monitoring activities, maintained field equipment and watercraft, constructed PIT scanning antennas, and provided support with data entry and clerical work as needed. Aaron left M&A in 2015 to pursue his Master’s degree. He completed his Master’s in 2018 and rejoined the M&A staff in early 2018. Aaron is trained in CPR and first-aid.

Lara McCall

Lara joined Marsh & Associates in 2017.

Taylor Haas
Fishery Assistant

B.S. Zoology, University of Oklahoma, 2014

Taylor joined the Marsh & Associates team in January of 2017 after a stint with the Bureau of Land Management in Safford, AZ.  At M&A Taylor is the lead for a project assessing the population status and distribution of razorback sucker and bonytail downstream of Palo Verde Dam, and also assists in the monitoring of Lake Mohave and the Gila River difficult streams surveys.  When not in the field, Taylor also constructs PIT scanners for use on various projects on the Lower Colorado River.

Nichole Carmack
Fishery Assistant

Nichole joined Marsh & Associates in 2017…