Spatial–temporal distribution characteristics of Harpadon nehereus in the Yangtze River Estuary and its relationship with environmental factors
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) a...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2024-02-01
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| Series: | Frontiers in Marine Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmars.2024.1340522/full |
| _version_ | 1797291863427776512 |
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| author | Yu Li Chunxia Gao Chunxia Gao Chunxia Gao Jinhui Chen Jinhui Chen Qing Wang Jing Zhao Jing Zhao |
| author_facet | Yu Li Chunxia Gao Chunxia Gao Chunxia Gao Jinhui Chen Jinhui Chen Qing Wang Jing Zhao Jing Zhao |
| author_sort | Yu Li |
| collection | DOAJ |
| description | 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. nehereus in the YRE. Overall, there were notable seasonal differences in the relationship between the relative resources of H. nehereus and environmental factors. The relative resources of H. nehereus in the YRE were higher in the summer than in autumn. In summer, both water temperature and salinity exhibited multi-wave nonlinear relationships with the relative resources of H. nehereus, while in autumn, the relative resources of H. nehereus showed a positive linear relationship with water temperature and a non-linear relationship with salinity. Additionally, the predicted and observed values of the relative resources of H. nehereus in 2022 showed similar spatial distribution patterns. The relative resources of H. nehereus was higher in the northern branch than in the southern branch and the offshore regions compared to the near-estuary regions. Altogether, our study provides a scientific basis for conservation management and sustainable utilization of H. nehereus resources in the YRE, thereby contributing to the restoration and management of fishery resources in the region. |
| first_indexed | 2024-03-07T19:43:53Z |
| format | Article |
| id | doaj.art-d9c5520b80c14cdea65afe7f91c4de90 |
| institution | Directory Open Access Journal |
| issn | 2296-7745 |
| language | English |
| last_indexed | 2024-03-07T19:43:53Z |
| publishDate | 2024-02-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj.art-d9c5520b80c14cdea65afe7f91c4de902024-02-29T05:03:18ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452024-02-011110.3389/fmars.2024.13405221340522Spatial–temporal distribution characteristics of Harpadon nehereus in the Yangtze River Estuary and its relationship with environmental factorsYu Li0Chunxia Gao1Chunxia Gao2Chunxia Gao3Jinhui Chen4Jinhui Chen5Qing Wang6Jing Zhao7Jing Zhao8College of Marine Living Resource Sciences and Management, Shanghai Ocean University, Shanghai, ChinaCollege of Marine Living Resource Sciences and Management, Shanghai Ocean University, Shanghai, ChinaKey Laboratory of Sustainable Development of Oceanic Fishery Resources of Ministry of Education, Shanghai Ocean University, Shanghai, ChinaJoint Laboratory for Monitoring and Conservation of Aquatic Biological Resources in the Yangtze River Estuary, Shanghai Ocean University, Shanghai, ChinaJoint Laboratory for Monitoring and Conservation of Aquatic Biological Resources in the Yangtze River Estuary, Shanghai Ocean University, Shanghai, ChinaResource Monitoring Department, Shanghai Aquatic Wildlife Conservation Research Center, Shanghai, ChinaShanghai Academy of Environmental Sciences, Shanghai Municipal Bureau of Ecology and Environment, Shanghai, ChinaCollege of Marine Living Resource Sciences and Management, Shanghai Ocean University, Shanghai, ChinaJoint Laboratory for Monitoring and Conservation of Aquatic Biological Resources in the Yangtze River Estuary, Shanghai Ocean University, Shanghai, ChinaTo 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. nehereus in the YRE. Overall, there were notable seasonal differences in the relationship between the relative resources of H. nehereus and environmental factors. The relative resources of H. nehereus in the YRE were higher in the summer than in autumn. In summer, both water temperature and salinity exhibited multi-wave nonlinear relationships with the relative resources of H. nehereus, while in autumn, the relative resources of H. nehereus showed a positive linear relationship with water temperature and a non-linear relationship with salinity. Additionally, the predicted and observed values of the relative resources of H. nehereus in 2022 showed similar spatial distribution patterns. The relative resources of H. nehereus was higher in the northern branch than in the southern branch and the offshore regions compared to the near-estuary regions. Altogether, our study provides a scientific basis for conservation management and sustainable utilization of H. nehereus resources in the YRE, thereby contributing to the restoration and management of fishery resources in the region.https://www.frontiersin.org/articles/10.3389/fmars.2024.1340522/fullHarpadon nehereusYangtze River Estuary (YRE)spatial-temporal distributiongeneralized additive models (GAM)environmental factors |
| spellingShingle | Yu Li Chunxia Gao Chunxia Gao Chunxia Gao Jinhui Chen Jinhui Chen Qing Wang Jing Zhao Jing Zhao Spatial–temporal distribution characteristics of Harpadon nehereus in the Yangtze River Estuary and its relationship with environmental factors Frontiers in Marine Science Harpadon nehereus Yangtze River Estuary (YRE) spatial-temporal distribution generalized additive models (GAM) environmental factors |
| title | Spatial–temporal distribution characteristics of Harpadon nehereus in the Yangtze River Estuary and its relationship with environmental factors |
| title_full | Spatial–temporal distribution characteristics of Harpadon nehereus in the Yangtze River Estuary and its relationship with environmental factors |
| title_fullStr | Spatial–temporal distribution characteristics of Harpadon nehereus in the Yangtze River Estuary and its relationship with environmental factors |
| title_full_unstemmed | Spatial–temporal distribution characteristics of Harpadon nehereus in the Yangtze River Estuary and its relationship with environmental factors |
| title_short | Spatial–temporal distribution characteristics of Harpadon nehereus in the Yangtze River Estuary and its relationship with environmental factors |
| title_sort | spatial temporal distribution characteristics of harpadon nehereus in the yangtze river estuary and its relationship with environmental factors |
| topic | Harpadon nehereus Yangtze River Estuary (YRE) spatial-temporal distribution generalized additive models (GAM) environmental factors |
| url | https://www.frontiersin.org/articles/10.3389/fmars.2024.1340522/full |
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