Sponsor: John Durand, Ph.D. Wildlife & Fisheries Biology Zooplankton are a crucial part of wetland food webs, sustaining fish and aquatic organisms. Zooplankton community composition and seasonal dynamics can vary according to hydrological management, but the response is not well known in man-made habitats, such as managed wetlands. This study examines zooplankton community trends in seasonal managed wetlands and tidal wetlands in Suisun Marsh, California to understand how differences in hydrological management affect zooplankton abundance and composition. Zooplankton samples were collected from six managed wetlands and seven tidal wetlands between 2018 and 2024. We assessed zooplankton biomass and taxonomic composition and examined seasonal trends in the two wetland habitat types. Findings demonstrate that seasonal managed wetlands yield higher quantities of zooplankton than tidal wetlands, likely attributed to decomposition of organic matter induced by floods, which can foster phytoplankton blooms and subsequently enhance zooplankton output. Zooplankton taxa such as Daphnia magna, Acanthocyclops vernalis, and rotifers exhibited a strong preference for managed wetlands. In contrast, tidal wetlands had a higher prevalence of nonnative copepods, like Limnoithona tetraspina. Managed wetlands may offer vital seasonal food resources for recruiting fishes while tidal wetlands provide refuge and connectivity, suggesting that both wetland types may be important for future wetland restoration and conservation. Clinical and Technical Factors for Quantitative Ultrasound (US) Measurements of Liver Stiffness and Fat

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