Relationship between Engraulis japonicus Resources and Environmental Factors Based on Multi-Model Comparison in Offshore Waters of Southern Zhejiang, China

In order to accurately explore the relationship between density of Engraulis japonicus and environmental factors, five types models, including Tweedie-Generalized Additive Model (GAM), two-stage GAM, Ad hoc-GAM, Generalized Mixing (GAMM), were compared based on survey data in offshore waters southern Zhejiang, China from 2015 2021 this study. The results showed best goodness fit for GAM when processing E. resource density. deviance explained GAM1 GAM2 19.9 53.8%, respectively. According study, water temperature salinity are important factors affecting distribution japonicus, which also closely related latitude. general, decreases gradually with increase temperature. When was 26 ppt 34 ppt, higher. Also, there some differences spatial different seasons. analyzed through various models provide a scientific basis conservation management China.