Correlations between Environmental Factors and the Distribution of Juvenile <i>Hucho bleekeri</i> in the Taibai River, Shaanxi, China
Sichuan taimen (<i>Hucho bleekeri</i>) is a national highly protected wild animal that faces significant impacts from habitat degradation and loss. To study the habitat selection by <i>H. bleekeri</i>, data on the Taibai River and the distribution of juvenile <i>H. blee...
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MDPI AG
2023-07-01
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| Series: | Fishes |
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| Online Access: | https://www.mdpi.com/2410-3888/8/7/379 |
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| author | Jinming Wu Jinping Wu Huan Ye Wei Xiong Wanmin Qu Xiaoqian Leng Hao Du |
| author_facet | Jinming Wu Jinping Wu Huan Ye Wei Xiong Wanmin Qu Xiaoqian Leng Hao Du |
| author_sort | Jinming Wu |
| collection | DOAJ |
| description | Sichuan taimen (<i>Hucho bleekeri</i>) is a national highly protected wild animal that faces significant impacts from habitat degradation and loss. To study the habitat selection by <i>H. bleekeri</i>, data on the Taibai River and the distribution of juvenile <i>H. bleekeri</i> were recorded seasonally between February 2017 and January 2018, and habitat selection was assessed using the suitability curve method. The results indicate that the average distribution density of juvenile <i>H. bleekeri</i> in the Taibai River is 0.08 ± 0.09 ind./m, with an optimal elevation range from 1200 to 1600 m, river sinuosity range from 1.0 to 1.2, and vegetation coverage between 0.7 and 1.0. When choosing a microhabitat, juvenile <i>H. bleekeri</i> individuals tend to inhabit water areas with a water depth of 0.65 ± 0.33 m, flow velocity of 0.50 ± 0.24 m/s, and offshore distance of 7.66 ± 4.25 m. Furthermore, smaller juvenile fish prefer nearshore habitats with lower flow velocities and shallower water depths. The results provide technical support for the protection and restoration of the habitat of <i>H. bleekeri</i>. |
| first_indexed | 2024-03-11T01:05:05Z |
| format | Article |
| id | doaj.art-e8a0e123de07476ea9fded1d92050c57 |
| institution | Directory Open Access Journal |
| issn | 2410-3888 |
| language | English |
| last_indexed | 2024-03-11T01:05:05Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fishes |
| spelling | doaj.art-e8a0e123de07476ea9fded1d92050c572023-11-18T19:18:34ZengMDPI AGFishes2410-38882023-07-018737910.3390/fishes8070379Correlations between Environmental Factors and the Distribution of Juvenile <i>Hucho bleekeri</i> in the Taibai River, Shaanxi, ChinaJinming Wu0Jinping Wu1Huan Ye2Wei Xiong3Wanmin Qu4Xiaoqian Leng5Hao Du6Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, ChinaKey Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, ChinaKey Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, ChinaKey Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, ChinaKey Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, ChinaKey Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, ChinaKey Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs of China, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, ChinaSichuan taimen (<i>Hucho bleekeri</i>) is a national highly protected wild animal that faces significant impacts from habitat degradation and loss. To study the habitat selection by <i>H. bleekeri</i>, data on the Taibai River and the distribution of juvenile <i>H. bleekeri</i> were recorded seasonally between February 2017 and January 2018, and habitat selection was assessed using the suitability curve method. The results indicate that the average distribution density of juvenile <i>H. bleekeri</i> in the Taibai River is 0.08 ± 0.09 ind./m, with an optimal elevation range from 1200 to 1600 m, river sinuosity range from 1.0 to 1.2, and vegetation coverage between 0.7 and 1.0. When choosing a microhabitat, juvenile <i>H. bleekeri</i> individuals tend to inhabit water areas with a water depth of 0.65 ± 0.33 m, flow velocity of 0.50 ± 0.24 m/s, and offshore distance of 7.66 ± 4.25 m. Furthermore, smaller juvenile fish prefer nearshore habitats with lower flow velocities and shallower water depths. The results provide technical support for the protection and restoration of the habitat of <i>H. bleekeri</i>.https://www.mdpi.com/2410-3888/8/7/379resource densityhabitat characteristicscorrelation analysis |
| spellingShingle | Jinming Wu Jinping Wu Huan Ye Wei Xiong Wanmin Qu Xiaoqian Leng Hao Du Correlations between Environmental Factors and the Distribution of Juvenile <i>Hucho bleekeri</i> in the Taibai River, Shaanxi, China Fishes resource density habitat characteristics correlation analysis |
| title | Correlations between Environmental Factors and the Distribution of Juvenile <i>Hucho bleekeri</i> in the Taibai River, Shaanxi, China |
| title_full | Correlations between Environmental Factors and the Distribution of Juvenile <i>Hucho bleekeri</i> in the Taibai River, Shaanxi, China |
| title_fullStr | Correlations between Environmental Factors and the Distribution of Juvenile <i>Hucho bleekeri</i> in the Taibai River, Shaanxi, China |
| title_full_unstemmed | Correlations between Environmental Factors and the Distribution of Juvenile <i>Hucho bleekeri</i> in the Taibai River, Shaanxi, China |
| title_short | Correlations between Environmental Factors and the Distribution of Juvenile <i>Hucho bleekeri</i> in the Taibai River, Shaanxi, China |
| title_sort | correlations between environmental factors and the distribution of juvenile i hucho bleekeri i in the taibai river shaanxi china |
| topic | resource density habitat characteristics correlation analysis |
| url | https://www.mdpi.com/2410-3888/8/7/379 |
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