Florida Tech Indian River Lagoon Research Institute — Melbourne, Florida

The Indian River Lagoon Research Institute (IRLRI) is Florida Tech's center for science and engineering work on the estuary that runs along Melbourne's eastern edge. According to Florida Tech's Facts and Figures, the institute was established in 2013 to improve and sustain the health of the one-of-a-kind estuary, and university faculty had already studied the Indian River Lagoon for more than 30 years by then. Florida Tech counts more than 15 engineering and science faculty working through the institute, while the institute's own page describes a group of more than 20 faculty members with decades of lagoon research experience.

The work is based on Florida Tech's 130-acre campus in the City of Melbourne, at 150 W. University Blvd., about 2 miles from downtown Melbourne and 6 miles from the nearest beach. As listed on the institute page in October 2026, the IRLRI director is Robert Weaver, an associate professor on its engineering team, and the outreach coordinator for community projects is Kelli Hunsucker. Florida Tech itself began in 1958 as Brevard Engineering College and took the name Florida Institute of Technology in 1966.

The IRLRI lists its subjects as muck and nutrients, lagoon flow, nutrient reduction, sediment loading, ecosystem recovery, policy and management, and engineering technologies. Its starting premise, stated on the Florida Tech page, is a lagoon home to more than 3,000 species of plants and animals that has suffered from a half century of fertilizer runoff and wastewater as development grew on the Space Coast. The page describes muck as a thick mixture of nitrogen and phosphorus that resembles black tar and reaches up to 10 feet high in some parts of the lagoon, smothering seagrass beds.

The newest published result comes from the Banana River, a shallow estuary within the Indian River Lagoon system. On October 7, 2026, Florida Tech reported a study by assistant professor Austin Fox and graduate researchers, published in August 2026 in Frontiers in Marine Science, that used 80 oxygen sensors on the river floor. Oxygen at the sediment level ran 10 to 15% lower than near the surface or at mid-depth, muck deposits contributed to low oxygen as much as 500 meters from their footprint, and one or more sensors recorded hypoxic conditions 90% of the time.

Florida Tech describes the Fox paper as the first to determine that internal nutrient loading is happening in the estuary: when oxygen-starved bottom dwellers die, phosphorus already locked in the sediment returns to the water and feeds new algal blooms. The Melbourne team's next step, the university says, is to quantify those hypoxia effects across the Indian River Lagoon and its tributaries.

The institute's largest body of applied work is the Environmental Muck Dredging research done for Brevard County. Florida Tech's final reports archive lists the Year 1 report, Impacts of environmental muck dredging 2014-2015, submitted to the Brevard County Natural Resources Management Department in July 2016 and edited by J.G. Windsor, Jr. The IRLRI page credits funding to Department of Environmental Protection grant agreements S0714 and NS005, administered by Brevard County.

Year 2 was split into subtasks delivered between 2017 and 2019. Florida Tech researchers reported on seagrass monitoring and infaunal surveys (Kevin Johnson, September 2017), fish populations and seagrass restoration (Jonathan Shenker, March 2018), the effectiveness of muck removal on sediment and water quality (Austin Fox, John Trefry and colleagues, December 2017), nitrogen and phosphorus inputs from major tributaries (October 2017), a hydrologic and water quality model for Brevard County waters (Gary Zarillo, April 2018), and a Source to Slime study (Leesa Souto, May 2019).

Year 3 reports, dated 2019 to 2021, returned to the Brevard County sites to measure muck removal efficiency and the biological and chemical changes after dredging, tracked muck inputs from rivers, creeks and outfalls, applied a Quick-Flux technique lagoon-wide to measure sediment nitrogen and phosphorus fluxes, and produced guidance on optimizing the selection of sites for environmental dredging in the Indian River Lagoon system. The same Florida Tech page archives the State of Florida Restore Lagoon Inflow Research Project reports from 2020, 2021 and 2023.

The best-known outreach effort is Living Docks, which invites lagoon-front owners to turn docks and seawalls into oyster habitat by hanging mesh bags of used oyster shells in the water to attract oyster larvae. Florida Tech states that a single dock with 37 pilings, averaging 32 oysters per piling, can filter about 21 million gallons of water per year. The IRLRI describes the program as a way to increase bottom habitat for filter feeders in the Indian River Lagoon.

Students build much of the gear on campus. In March 2024 the institute brought students from the Bisk College of Business and more than three dozen from Melbourne Central Catholic to Crawford Green, where volunteers assembled 40 oyster mats, according to a Florida Tech news report. Those mats, with others made at a December event, were slated for the dock of the Aquarina community in Melbourne Beach.

The institute also hosts public Lagoon Forums aimed at connecting scientists, engineers, citizens and municipalities. Its archive includes Lagoon Straight Talk, held at Florida Tech in June 2022 and organized by the Brevard Indian River Lagoon Coalition, with speakers from the Indian River Lagoon National Estuary Program, the SOIRL Citizens Oversight Committee and the Restore Lagoon Inflow project.

The closest partner is the East Coast Zoological Foundation, which operates Brevard Zoo in Melbourne. In March 2024 the two announced the Consortium of Aquarium Researchers and Educators (CARE), which Florida Tech will manage as the primary university, based at the Dr. Duane De Freese Coastal Conservation Hub inside the foundation's planned aquarium at Port Canaveral. Florida Tech expects CARE to reach the aquarium's estimated 500,000 annual guests. The partners had already built an oyster reef and a living shoreline demonstration site, studied lagoon seagrass and worked on buffer zones, and planned research on sediment quality for seagrass recovery in the Banana River Lagoon using the zoo's seagrass nursery.

Regional coordination runs through the estuary program. The hub's namesake, Duane De Freese, holds two Florida Tech degrees and is executive director of the Indian River Lagoon Council, an independent special district created in 2015 to govern the Indian River Lagoon National Estuary Program, one of 28 such programs designated by Congress. Florida Tech gave him its Jerome P. Keuper Distinguished Alumni Award on October 17, 2025.