Experimental study of the behavioral response of fish to changes in hydrodynamic indicators in a near-natural environment
The large-scale construction of hydropower projects has significantly altered the ecohydrological conditions of fish habitats, and habitat, migration and other behavior of fish have been affected to varying degrees. Although the behavioral characteristics of fish under different hydrodynamic conditi...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-10-01
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| Series: | Ecological Indicators |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1470160X2300955X |
| _version_ | 1797683075472162816 |
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| author | Han Liu Junqiang Lin Dongsheng Wang Jin Huang Hao Jiang Di Zhang Qidong Peng Jing Yang |
| author_facet | Han Liu Junqiang Lin Dongsheng Wang Jin Huang Hao Jiang Di Zhang Qidong Peng Jing Yang |
| author_sort | Han Liu |
| collection | DOAJ |
| description | The large-scale construction of hydropower projects has significantly altered the ecohydrological conditions of fish habitats, and habitat, migration and other behavior of fish have been affected to varying degrees. Although the behavioral characteristics of fish under different hydrodynamic conditions have been investigated in a number of indoor experiments, it is still difficult to apply the results of hydrodynamic indicators directly to the practice of ecological restoration. In order to investigate the response relationship between fish behavior and hydrodynamic indicators under near-natural conditions, and to clarify the structural linkage of multiple influences between the external ecological environment, external behavior and internal changes of fish, the study relies on a large ecological test site in which the flow rate of the rivers can be changed. A low-frequency radio identification device was used in several monitoring sections in the test river to monitor the behavioral trajectories of fish in real time. The study shows that the method of fish behavior tracking based on passive integrated transponder (PIT) tags is feasible in small near-natural rivers. The test fish were more active under a low flow rate and changed their upstream trajectory in response to flow changes. When the flow velocity reached 1.6–1.8 m/s, the fish upstream gradually shifted from along the mainstream direction to along the shoreline. There was no significant difference in the activity of the test fish between day and night, with fish preferring to inhabit areas of low flow velocity and low turbulent kinetic energy. There was a range of high flow velocities (1.6–1.8 m/s) and high turbulent kinetic energy (0.1–0.15 m2/s2) that stimulated the swimming behavior of the fish. In addition, the physical indicators and physiological and biochemical indicators of fish were also included in the research scope. The test fish with high activity were slender after long-term swimming training, and their hemoglobin concentration and red blood cell number were higher than those of inactive fish and cultured fish. The research results will be used to optimize river restoration projects, promote the recovery of fish resources and population size, and reduce the negative impact of hydropower projects on the ecological environment. |
| first_indexed | 2024-03-12T00:10:15Z |
| format | Article |
| id | doaj.art-79fb5c6c2da94569b89c8d9b33c68a34 |
| institution | Directory Open Access Journal |
| issn | 1470-160X |
| language | English |
| last_indexed | 2024-03-12T00:10:15Z |
| publishDate | 2023-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecological Indicators |
| spelling | doaj.art-79fb5c6c2da94569b89c8d9b33c68a342023-09-16T05:30:02ZengElsevierEcological Indicators1470-160X2023-10-01154110813Experimental study of the behavioral response of fish to changes in hydrodynamic indicators in a near-natural environmentHan Liu0Junqiang Lin1Dongsheng Wang2Jin Huang3Hao Jiang4Di Zhang5Qidong Peng6Jing Yang7State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100048, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100048, China; Corresponding author.China Renewable Energy Engineering Institute, Beijing 100120, ChinaShengda Hydropower Co.,Ltd, Power Construction Corporation of China, Leshan 614000, ChinaChina Renewable Energy Engineering Institute, Beijing 100120, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100048, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100048, ChinaHuaneng Tibet Hydropower Safety Engineering Technology Research Center, Tibet 850000, ChinaThe large-scale construction of hydropower projects has significantly altered the ecohydrological conditions of fish habitats, and habitat, migration and other behavior of fish have been affected to varying degrees. Although the behavioral characteristics of fish under different hydrodynamic conditions have been investigated in a number of indoor experiments, it is still difficult to apply the results of hydrodynamic indicators directly to the practice of ecological restoration. In order to investigate the response relationship between fish behavior and hydrodynamic indicators under near-natural conditions, and to clarify the structural linkage of multiple influences between the external ecological environment, external behavior and internal changes of fish, the study relies on a large ecological test site in which the flow rate of the rivers can be changed. A low-frequency radio identification device was used in several monitoring sections in the test river to monitor the behavioral trajectories of fish in real time. The study shows that the method of fish behavior tracking based on passive integrated transponder (PIT) tags is feasible in small near-natural rivers. The test fish were more active under a low flow rate and changed their upstream trajectory in response to flow changes. When the flow velocity reached 1.6–1.8 m/s, the fish upstream gradually shifted from along the mainstream direction to along the shoreline. There was no significant difference in the activity of the test fish between day and night, with fish preferring to inhabit areas of low flow velocity and low turbulent kinetic energy. There was a range of high flow velocities (1.6–1.8 m/s) and high turbulent kinetic energy (0.1–0.15 m2/s2) that stimulated the swimming behavior of the fish. In addition, the physical indicators and physiological and biochemical indicators of fish were also included in the research scope. The test fish with high activity were slender after long-term swimming training, and their hemoglobin concentration and red blood cell number were higher than those of inactive fish and cultured fish. The research results will be used to optimize river restoration projects, promote the recovery of fish resources and population size, and reduce the negative impact of hydropower projects on the ecological environment.http://www.sciencedirect.com/science/article/pii/S1470160X2300955XFishHabitatEcological restorationRadio identificationHydrodynamic indicatorsSwimming behavior |
| spellingShingle | Han Liu Junqiang Lin Dongsheng Wang Jin Huang Hao Jiang Di Zhang Qidong Peng Jing Yang Experimental study of the behavioral response of fish to changes in hydrodynamic indicators in a near-natural environment Ecological Indicators Fish Habitat Ecological restoration Radio identification Hydrodynamic indicators Swimming behavior |
| title | Experimental study of the behavioral response of fish to changes in hydrodynamic indicators in a near-natural environment |
| title_full | Experimental study of the behavioral response of fish to changes in hydrodynamic indicators in a near-natural environment |
| title_fullStr | Experimental study of the behavioral response of fish to changes in hydrodynamic indicators in a near-natural environment |
| title_full_unstemmed | Experimental study of the behavioral response of fish to changes in hydrodynamic indicators in a near-natural environment |
| title_short | Experimental study of the behavioral response of fish to changes in hydrodynamic indicators in a near-natural environment |
| title_sort | experimental study of the behavioral response of fish to changes in hydrodynamic indicators in a near natural environment |
| topic | Fish Habitat Ecological restoration Radio identification Hydrodynamic indicators Swimming behavior |
| url | http://www.sciencedirect.com/science/article/pii/S1470160X2300955X |
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