Diadromous fishes, known for their extensive migrations between freshwater and marine ecosystems, are highly vulnerable to environmental fluctuations and human activities, making them prone to population declines. Despite awareness of climate change impacts and habitat limitations, the remaining spawning habitat’s biogeography is understudied. The present study focuses on the Hudson River Estuary (HRE) American shad ( Alosa sapidissima) population which is experiencing historically low stock levels, as a case stud…

Abstract The management of anadromous fishes is inherently complicated because this suite of species exhibits complex life histories in multiple habitats and is subject to varying natural and anthropogenic influences during discrete ontogenetic periods. Fishery scientists and managers often adopt life history–based simulation models to help understand potential effects of management decisions on fish populations while incorporating uncertainty in life history, climate, and other components of resource management s…