Marshak's primary responsibilities are to coordinate the NOS Science Board and the Interagency Harmful Algal Bloom and Hypoxia Research and Control Amendment Act working group (IWG-HABHRCA), and act as the NCCOS Portfolio Tony's primary responsibilities are to coordinate the NOS Science Board and the Interagency Harmful Algal Bloom and Hypoxia Research and Control Amendment Act working group (IWG-HABHRCA), and act as the NCCOS Portfolio Manager. These IWG efforts include producing progress reports as related to research being conducted by federal agencies on harmful algal blooms and hypoxia throughout marine waters and the Great Lakes. Additional responsibilities include serving as a backup NCCOS member to the NOS Planning Team, contributing to programmatic and budget planning and evaluation, and tracking and developing program performance measures. He also serves as the backup NOS representative to the NOAA Research Council Research Development & Enterprise Committee (RDEC), and provides NOS mission and meeting support as needed. In addition, Marshak contributes to NCCOS special projects, and participates in engagement with Congressional staffers and representatives to promote support of NCCOS interests. He continues to collaborate with the NOAA Fisheries Senior Scientist for Ecosystem Management on studies related to examining socioecological systems and characterizing and comparing marine fisheries ecosystems, while also collaborating with NCCOS scientists on efforts related to Harmful Algal Blooms (HABs), hypoxia events, and coral reef ecology.
Following his undergraduate, Marshak was briefly employed as a contractor at the NOAA Fisheries Galveston Laboratory. He then worked as a graduate research assistant at the UPR-Mayaguez Isla Magueyes field station, where he also participated in coral reef related research with NOAA Fisheries, Puerto Rico Sea Grant, the Caribbean Fishery Management Council, and intermittently assisted the NCCOS Biogeography Team. His research included studies into queen conch spatiotemporal patterns throughout the Puerto Rico shelf; the effects of trap fisheries on coral reef ecosystems; and the effectiveness of fishing closures on grouper spawning aggregations. Before coming to Silver Spring as a 2014 Sea Grant Knauss Fellow, he was based at the Dauphin Island Sea Lab (Alabama) where his dissertation research was focused on the ecological effects of lionfish and climate-associated range shifts on the Gulf of Mexico red snapper population. Prior to joining NCCOS, Marshak was placed in the NOAA Fisheries Office of Science & Technology during his Knauss fellowship year and continued in that office as a contractor for five years. During that time, he co-led its habitat science program and collaborated with the NOAA Fisheries Senior Ecosystems Scientist on projects related to ecosystem approaches to management.
Marshak received his BS in Marine Biology from Texas A&M University, his MS in Marine Sciences from the University of Puerto Rico (UPR), and his PhD from the University of South Alabama.