Kernel density estimation of egg attachment areas aids in revealing spatiotemporal changes in Chinese sturgeon spawning grounds
Identifying precise egg attachment areas and tracking trends of spawning magnitude (total amount of spawned eggs) are critical for accurate habitat assessment and effective conservation efforts, especially for lithophilic spawning fishes. However, accurate measurement of spawning conditions across b...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co. Ltd.
2025-01-01
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| Series: | Water Biology and Security |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772735124000830 |
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| author | Pengsheng Li Xuan Ban Jinming Wu Hui Zhang Junyi Li Li Shen Zhigang Liu Hao Du |
| author_facet | Pengsheng Li Xuan Ban Jinming Wu Hui Zhang Junyi Li Li Shen Zhigang Liu Hao Du |
| author_sort | Pengsheng Li |
| collection | DOAJ |
| description | Identifying precise egg attachment areas and tracking trends of spawning magnitude (total amount of spawned eggs) are critical for accurate habitat assessment and effective conservation efforts, especially for lithophilic spawning fishes. However, accurate measurement of spawning conditions across both spatial and temporal dimensions poses significant challenges. We conducted a fourteen-year field study below the Gezhouba Dam, the main spawning ground for the Chinese sturgeon, using Kernel Density Estimation (KDE) method and Catch per Unit of Effort (CPUE) to refine knowledge on egg attachment areas relative to previous assessments. In addition, our analysis documented shifts in spawning locations within these four areas over the past fourteen years, revealing a worrying trend of decreasing spawning magnitude. This approach not only enabled the incorporation of the density distribution of eggs into the assessment of spawning magnitude trends, but also underscored the potential of the KDE as a framework for identifying egg attachment areas and estimating spawning magnitude trends. Our results provide valuable insights into spawning degradation of Chinese sturgeon and inform conservation strategies to protect their fragile spawning grounds. |
| format | Article |
| id | doaj-art-fec0546385bc4642993866aa622dabc3 |
| institution | Kabale University |
| issn | 2772-7351 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | KeAi Communications Co. Ltd. |
| record_format | Article |
| series | Water Biology and Security |
| spelling | doaj-art-fec0546385bc4642993866aa622dabc32025-01-27T04:22:40ZengKeAi Communications Co. Ltd.Water Biology and Security2772-73512025-01-0141100311Kernel density estimation of egg attachment areas aids in revealing spatiotemporal changes in Chinese sturgeon spawning groundsPengsheng Li0Xuan Ban1Jinming Wu2Hui Zhang3Junyi Li4Li Shen5Zhigang Liu6Hao Du7College of Marine Sciences, Shanghai Ocean University, Shanghai, China; Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, 430223, ChinaInnovation Academy for Precision Measurement Science and Technology, Chinese Academy of Science, Wuhan, 430071, China; Corresponding author.Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, 430223, ChinaYangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, 430223, ChinaYangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, 430223, ChinaYangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, 430223, ChinaYangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, 430223, ChinaYangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, 430223, China; Corresponding author.Identifying precise egg attachment areas and tracking trends of spawning magnitude (total amount of spawned eggs) are critical for accurate habitat assessment and effective conservation efforts, especially for lithophilic spawning fishes. However, accurate measurement of spawning conditions across both spatial and temporal dimensions poses significant challenges. We conducted a fourteen-year field study below the Gezhouba Dam, the main spawning ground for the Chinese sturgeon, using Kernel Density Estimation (KDE) method and Catch per Unit of Effort (CPUE) to refine knowledge on egg attachment areas relative to previous assessments. In addition, our analysis documented shifts in spawning locations within these four areas over the past fourteen years, revealing a worrying trend of decreasing spawning magnitude. This approach not only enabled the incorporation of the density distribution of eggs into the assessment of spawning magnitude trends, but also underscored the potential of the KDE as a framework for identifying egg attachment areas and estimating spawning magnitude trends. Our results provide valuable insights into spawning degradation of Chinese sturgeon and inform conservation strategies to protect their fragile spawning grounds.http://www.sciencedirect.com/science/article/pii/S2772735124000830Egg distributionSpawning magnitudeKernel density estimationChinese sturgeonCatch-per-unit-of-effort (CPUE)Spawning location |
| spellingShingle | Pengsheng Li Xuan Ban Jinming Wu Hui Zhang Junyi Li Li Shen Zhigang Liu Hao Du Kernel density estimation of egg attachment areas aids in revealing spatiotemporal changes in Chinese sturgeon spawning grounds Water Biology and Security Egg distribution Spawning magnitude Kernel density estimation Chinese sturgeon Catch-per-unit-of-effort (CPUE) Spawning location |
| title | Kernel density estimation of egg attachment areas aids in revealing spatiotemporal changes in Chinese sturgeon spawning grounds |
| title_full | Kernel density estimation of egg attachment areas aids in revealing spatiotemporal changes in Chinese sturgeon spawning grounds |
| title_fullStr | Kernel density estimation of egg attachment areas aids in revealing spatiotemporal changes in Chinese sturgeon spawning grounds |
| title_full_unstemmed | Kernel density estimation of egg attachment areas aids in revealing spatiotemporal changes in Chinese sturgeon spawning grounds |
| title_short | Kernel density estimation of egg attachment areas aids in revealing spatiotemporal changes in Chinese sturgeon spawning grounds |
| title_sort | kernel density estimation of egg attachment areas aids in revealing spatiotemporal changes in chinese sturgeon spawning grounds |
| topic | Egg distribution Spawning magnitude Kernel density estimation Chinese sturgeon Catch-per-unit-of-effort (CPUE) Spawning location |
| url | http://www.sciencedirect.com/science/article/pii/S2772735124000830 |
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