Niche Analysis of the Main Fish in the Lhasa River Basin
The Lhasa River is one of the five tributaries of the Yarlung Zangbo River. It is the main industrial, agricultural and animal husbandry area in Tibet. It plays an important ecological security barrier role in regulating regional climate and maintaining biodiversity. In order to understand the resou...
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MDPI AG
2023-02-01
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| Online Access: | https://www.mdpi.com/2073-4441/15/5/860 |
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| author | He Gao Haiping Liu Qiming Wang Fei Liu Junting Li Yuting Duan Luowu Zeren Suxing Fu Jingsen Zhang Yan Zhou Yan Li Chaowei Zhou |
| author_facet | He Gao Haiping Liu Qiming Wang Fei Liu Junting Li Yuting Duan Luowu Zeren Suxing Fu Jingsen Zhang Yan Zhou Yan Li Chaowei Zhou |
| author_sort | He Gao |
| collection | DOAJ |
| description | The Lhasa River is one of the five tributaries of the Yarlung Zangbo River. It is the main industrial, agricultural and animal husbandry area in Tibet. It plays an important ecological security barrier role in regulating regional climate and maintaining biodiversity. In order to understand the resource utilization ability and relationship of fish in Lhasa River, and provide basic data for the protection and sustainable utilization of fish diversity in Lhasa River, the fishery resources in September 2019 (autumn), June 2020 (summer), November 2020 (winter) and March 2021 (spring) were investigated for the first time. The main fish in the catch were determined by the Index of Relative Importance (IRI). Shannon index and Pianka’s index were used to analyze the niche breadth and overlap values of the main fish caught in Lhasa River Basin from three dimensions of time, space and space–time. The results show that a total of 1399 fish of 3 orders and 4 families were collected. Among them, there is one dominant species, <i>Schizopygopsis younghusbandi</i>, and five common species, <i>Schizothorax waltoni</i>, <i>Schizothorax oconnori</i>, <i>Ptychobarbus dipogon</i>, <i>Triplophysa stenura</i> and <i>Carassius auratus</i>. The spatial–temporal niche breadth ranges from 1.395 to 3.628. They are <i>Schizopygopsis younghusbandi</i>, <i>Carassius auratus</i>, <i>Ptychobarbus dipogon</i>, <i>Schizothorax oconnori</i>, <i>Triplophysa stenura</i> and <i>Schizothorax waltoni</i> in a declining order. The temporal niche breadth is generally small, indicating that the survival activities of the main fish are greatly affected by seasonal changes. The fluctuation range of spatial–temporal overlap value is 0–0.535, and only 20% of the total logarithm is meaningful. The species pairs with temporal niche overlap values exceeding 0.300 reached 80%, while the spatial niche overlap value is generally low. The results show that the spatial and temporal distributions of the main fish in Lhasa River were quite different, and the spatial and temporal niche overlap value of the relationship between species is obviously affected by the change in spatial distribution. This demonstrates that the competition relationship and intensity of the main fish are quite different in different spatial positions. |
| first_indexed | 2024-03-11T07:06:14Z |
| format | Article |
| id | doaj.art-1656158f76e94c4491c47ad274aee450 |
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| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-11T07:06:14Z |
| publishDate | 2023-02-01 |
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| spelling | doaj.art-1656158f76e94c4491c47ad274aee4502023-11-17T08:54:01ZengMDPI AGWater2073-44412023-02-0115586010.3390/w15050860Niche Analysis of the Main Fish in the Lhasa River BasinHe Gao0Haiping Liu1Qiming Wang2Fei Liu3Junting Li4Yuting Duan5Luowu Zeren6Suxing Fu7Jingsen Zhang8Yan Zhou9Yan Li10Chaowei Zhou11College of Fisheries, Southwest University, Chongqing 402460, ChinaIntegrative Science Center of Germplasm Creation in Western China (Chongqing) Science City & Southwest University, Chongqing 402460, ChinaAgriculture and Rural Affairs Department of Tibet Autonomous Region, Lhasa 850000, ChinaInstitute of Fisheries Science, Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa 851418, ChinaCollege of Fisheries, Southwest University, Chongqing 402460, ChinaCollege of Fisheries, Southwest University, Chongqing 402460, ChinaCollege of Fisheries, Southwest University, Chongqing 402460, ChinaCollege of Fisheries, Southwest University, Chongqing 402460, ChinaCollege of Fisheries, Southwest University, Chongqing 402460, ChinaCollege of Fisheries, Southwest University, Chongqing 402460, ChinaCollege of Fisheries, Southwest University, Chongqing 402460, ChinaCollege of Fisheries, Southwest University, Chongqing 402460, ChinaThe Lhasa River is one of the five tributaries of the Yarlung Zangbo River. It is the main industrial, agricultural and animal husbandry area in Tibet. It plays an important ecological security barrier role in regulating regional climate and maintaining biodiversity. In order to understand the resource utilization ability and relationship of fish in Lhasa River, and provide basic data for the protection and sustainable utilization of fish diversity in Lhasa River, the fishery resources in September 2019 (autumn), June 2020 (summer), November 2020 (winter) and March 2021 (spring) were investigated for the first time. The main fish in the catch were determined by the Index of Relative Importance (IRI). Shannon index and Pianka’s index were used to analyze the niche breadth and overlap values of the main fish caught in Lhasa River Basin from three dimensions of time, space and space–time. The results show that a total of 1399 fish of 3 orders and 4 families were collected. Among them, there is one dominant species, <i>Schizopygopsis younghusbandi</i>, and five common species, <i>Schizothorax waltoni</i>, <i>Schizothorax oconnori</i>, <i>Ptychobarbus dipogon</i>, <i>Triplophysa stenura</i> and <i>Carassius auratus</i>. The spatial–temporal niche breadth ranges from 1.395 to 3.628. They are <i>Schizopygopsis younghusbandi</i>, <i>Carassius auratus</i>, <i>Ptychobarbus dipogon</i>, <i>Schizothorax oconnori</i>, <i>Triplophysa stenura</i> and <i>Schizothorax waltoni</i> in a declining order. The temporal niche breadth is generally small, indicating that the survival activities of the main fish are greatly affected by seasonal changes. The fluctuation range of spatial–temporal overlap value is 0–0.535, and only 20% of the total logarithm is meaningful. The species pairs with temporal niche overlap values exceeding 0.300 reached 80%, while the spatial niche overlap value is generally low. The results show that the spatial and temporal distributions of the main fish in Lhasa River were quite different, and the spatial and temporal niche overlap value of the relationship between species is obviously affected by the change in spatial distribution. This demonstrates that the competition relationship and intensity of the main fish are quite different in different spatial positions.https://www.mdpi.com/2073-4441/15/5/860Index of Relative Importanceniche breadthniche overlapLhasa River |
| spellingShingle | He Gao Haiping Liu Qiming Wang Fei Liu Junting Li Yuting Duan Luowu Zeren Suxing Fu Jingsen Zhang Yan Zhou Yan Li Chaowei Zhou Niche Analysis of the Main Fish in the Lhasa River Basin Water Index of Relative Importance niche breadth niche overlap Lhasa River |
| title | Niche Analysis of the Main Fish in the Lhasa River Basin |
| title_full | Niche Analysis of the Main Fish in the Lhasa River Basin |
| title_fullStr | Niche Analysis of the Main Fish in the Lhasa River Basin |
| title_full_unstemmed | Niche Analysis of the Main Fish in the Lhasa River Basin |
| title_short | Niche Analysis of the Main Fish in the Lhasa River Basin |
| title_sort | niche analysis of the main fish in the lhasa river basin |
| topic | Index of Relative Importance niche breadth niche overlap Lhasa River |
| url | https://www.mdpi.com/2073-4441/15/5/860 |
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