Lifetime carryover of early partial migration behaviors in an estuarine-dependent fish under climate change
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Complex spatial structure within populations confers population stability and resilience through asynchronous responses of population sub-components to perturbation (i.e., portfolio effect). In fishes, spatial structure frequently develops via early-life partial migration, leading to diversified nursery use. However, the portfolio effect depends on how adult recruitment from different nurseries exhibits asynchronous dynamics in response to climate variables, and whether nursery experiences carry over to adult demographics. For a three-decade span, we tested adult nursery recruitment and carryover effects associated with early-life partial migration in Hudson River striped bass. Early-life partial migration led to structured utilization of freshwater, brackish, and coastal nurseries, all of which recruited to the adult population. Adult recruitment from brackish nurseries increased with freshwater flow, while coastal nurseries produced more adults during severe winter years. First-year n..., , , # Lifetime carryover of early partial migration behaviors in an estuarine-dependent fish under climate change [https://doi.org/10.5061/dryad.5x69p8dd3](https://doi.org/10.5061/dryad.5x69p8dd3) This README was generated on 20241219 by K. Arai. Author (Name, Institution, Email): K. Arai, University of California Davis, [kharai@ucdavis.edu](mailto:kharai@ucdavis.edu) This README is in reference to the data sets and R codes (.Rmd) needed to recreate the figures and analyses in âLifetime carryover of early partial migration behaviors in an estuarine-dependent fish under climate changeâ, submitted by K. Arai. There are five major analyses within the manuscript. The first script `01_nursery_assignment_2024-07-22.Rmd` reconstructs nursery habitats of adult striped bass using otolith chemistry, time series changepoint analysis, and random forest classification. The second script `02_abundance_environment_2024-07-22.Rmd ` organizes the predictor variables used to model adult brackish and wes...
