Title
Spatial-temporal distribution characteristics of Harpadon nehereus in the Yangtze River Estuary and its relationship with environmental factors
Author(s)
Li, Yu; Gao, Xia C.; Chen, Hui J.; Wang, Qing; Zhao, Jing
Published
2024
Publisher
Frontiers in Marine Science
Abstract
To investigate the spatial-temporal distribution characteristics of Harpadon nehereus in the Yangtze River Estuary (YRE) and its relationship with environmental factors, this study used the data from resource and environmental surveys conducted in the YRE and adjacent waters during August (summer) and November (autumn), 2017-2022. Generalized additive models (GAM) were employed to analyze the relationships between the relative resources of H. nehereus and environmental factors and to predict the spatial-temporal distribution of H. nehereus resources in 2022. Our results revealed that the best model deviance explained in summer and autumn was 64.89% and 49.90%, with average effect sizes of 0.75 and 0.70, respectively, for cross-validated regression slopes. Water temperature and salinity were identified as the key environmental factors influencing the relative resources of H.
Keywords
Harpadon nehereus; Yangtze River Estuary (YRE); Spatial-temporal distribution; generalized additive models (GAM); environmental factors
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