Intraspecific and Interspecific Variations in Habitat Usage by <i>Hemimyzon formosanus</i> and <i>Sinogastromyzon nantaiensis</i> in Riffle Areas of a Mountain Stream
In this study, we explored the structure of two migratory fish species and their variations along the longitudinal gradient of a stream by examining abiotic factors such as spatial scale elements and environmental factors, and biotic factors such as competition. The studied fish species, i.e., <i...
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| Format: | Article |
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MDPI AG
2023-11-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/15/22/3959 |
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| author | Ying-Sheng Lu Jian-Ping Suen |
| author_facet | Ying-Sheng Lu Jian-Ping Suen |
| author_sort | Ying-Sheng Lu |
| collection | DOAJ |
| description | In this study, we explored the structure of two migratory fish species and their variations along the longitudinal gradient of a stream by examining abiotic factors such as spatial scale elements and environmental factors, and biotic factors such as competition. The studied fish species, i.e., <i>Hemimyzon formosanus</i> and <i>Sinogastromyzon nantaiensis</i>, were sampled from the middle and upper reaches of the Nanzihsian Stream using the electrofishing technique, and data were collected on the physical environment covered by the electric grid. Statistical analyses confirmed that the interspecific and the intraspecific hydraulic habitat environments of the two species were different, i.e., <i>H. formosanus</i> was distributed relatively upstream and <i>S. nantaiensis</i> was distributed relatively downstream. Therefore, the habitat use of the two benthic fish species was different. The Nanzihsian Stream experienced an extreme flood event in 2009. The densities of adult and juvenile <i>H. formosanus</i> and <i>S. nantaiensis</i> are significantly higher than those before the extreme flood event in 2021, so we suggest that the <i>H. formosanus</i> and <i>S. nantaiensis</i> populations have recovered to those of the stages before the extreme flood event. We provide an integrated approach for applying engineering and biology to the context of future projects involving river dredging after extreme floods. |
| first_indexed | 2024-03-09T16:22:18Z |
| format | Article |
| id | doaj.art-08eaac0f01fc4086a0e610f3293890ab |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T16:22:18Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-08eaac0f01fc4086a0e610f3293890ab2023-11-24T15:11:26ZengMDPI AGWater2073-44412023-11-011522395910.3390/w15223959Intraspecific and Interspecific Variations in Habitat Usage by <i>Hemimyzon formosanus</i> and <i>Sinogastromyzon nantaiensis</i> in Riffle Areas of a Mountain StreamYing-Sheng Lu0Jian-Ping Suen1Department of Hydraulic and Ocean Engineering, National Cheng Kung University, No. 1 University Road, Tainan 701, TaiwanDepartment of Hydraulic and Ocean Engineering, National Cheng Kung University, No. 1 University Road, Tainan 701, TaiwanIn this study, we explored the structure of two migratory fish species and their variations along the longitudinal gradient of a stream by examining abiotic factors such as spatial scale elements and environmental factors, and biotic factors such as competition. The studied fish species, i.e., <i>Hemimyzon formosanus</i> and <i>Sinogastromyzon nantaiensis</i>, were sampled from the middle and upper reaches of the Nanzihsian Stream using the electrofishing technique, and data were collected on the physical environment covered by the electric grid. Statistical analyses confirmed that the interspecific and the intraspecific hydraulic habitat environments of the two species were different, i.e., <i>H. formosanus</i> was distributed relatively upstream and <i>S. nantaiensis</i> was distributed relatively downstream. Therefore, the habitat use of the two benthic fish species was different. The Nanzihsian Stream experienced an extreme flood event in 2009. The densities of adult and juvenile <i>H. formosanus</i> and <i>S. nantaiensis</i> are significantly higher than those before the extreme flood event in 2021, so we suggest that the <i>H. formosanus</i> and <i>S. nantaiensis</i> populations have recovered to those of the stages before the extreme flood event. We provide an integrated approach for applying engineering and biology to the context of future projects involving river dredging after extreme floods.https://www.mdpi.com/2073-4441/15/22/3959benthic speciesextreme floodriver dredging |
| spellingShingle | Ying-Sheng Lu Jian-Ping Suen Intraspecific and Interspecific Variations in Habitat Usage by <i>Hemimyzon formosanus</i> and <i>Sinogastromyzon nantaiensis</i> in Riffle Areas of a Mountain Stream Water benthic species extreme flood river dredging |
| title | Intraspecific and Interspecific Variations in Habitat Usage by <i>Hemimyzon formosanus</i> and <i>Sinogastromyzon nantaiensis</i> in Riffle Areas of a Mountain Stream |
| title_full | Intraspecific and Interspecific Variations in Habitat Usage by <i>Hemimyzon formosanus</i> and <i>Sinogastromyzon nantaiensis</i> in Riffle Areas of a Mountain Stream |
| title_fullStr | Intraspecific and Interspecific Variations in Habitat Usage by <i>Hemimyzon formosanus</i> and <i>Sinogastromyzon nantaiensis</i> in Riffle Areas of a Mountain Stream |
| title_full_unstemmed | Intraspecific and Interspecific Variations in Habitat Usage by <i>Hemimyzon formosanus</i> and <i>Sinogastromyzon nantaiensis</i> in Riffle Areas of a Mountain Stream |
| title_short | Intraspecific and Interspecific Variations in Habitat Usage by <i>Hemimyzon formosanus</i> and <i>Sinogastromyzon nantaiensis</i> in Riffle Areas of a Mountain Stream |
| title_sort | intraspecific and interspecific variations in habitat usage by i hemimyzon formosanus i and i sinogastromyzon nantaiensis i in riffle areas of a mountain stream |
| topic | benthic species extreme flood river dredging |
| url | https://www.mdpi.com/2073-4441/15/22/3959 |
| work_keys_str_mv | AT yingshenglu intraspecificandinterspecificvariationsinhabitatusagebyihemimyzonformosanusiandisinogastromyzonnantaiensisiinriffleareasofamountainstream AT jianpingsuen intraspecificandinterspecificvariationsinhabitatusagebyihemimyzonformosanusiandisinogastromyzonnantaiensisiinriffleareasofamountainstream |