Characteristics of surface flow field and substrate in the spawning ground of <em>Schizothorax grahami</em>

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dc.contributor.authorXu, Li
dc.contributor.authorZhou, Yang
dc.contributor.authorCui, Weijie
dc.contributor.authorLu, Qun
dc.contributor.authorLiu, Jianhu
dc.contributor.authorDuan, Cong
dc.contributor.authorHe, Tao
dc.date.accessioned2024-07-10T01:47:11Z
dc.date.available2024-07-10T01:47:11Z
dc.date.issued2024
dc.description.abstractThe Spawning ground is a crucial habitat for fish, and the physical characteristics of the habitat are important for fish life history. In this paper, Large-Scale Particle Image Velocimetry (LSPIV) was used to measure the surface flow field and the substrate (particle size and mineral composition) in the spawning ground of <em>Schizothorax grahami</em>. Based on the literature and consideration of experimental feasibility, two spawning grounds in the source of the Chishui River were selected—Erlongqiangbao (located in the mainstream) and Bamaoba (located in the tributary), two and three cross sections of each river section were analyzed respectively. The results show that Erlongqiangbao first flows in the direction of "southeast-northwest" and then "southwest—northeast" after crossing the bridge; the maximum velocity of the reach is 3.374m/s. The size of the substrate is mainly less than 1mm in the upstream section of Erlongqiangbao, both 25-50mm in the middle and downstream, and the substrate type mainly is quartz and calcite; Gushangtian flows in the direction of "southwest-northeast," the maximum velocity of the reach is 1.537m/s, the size of the substrate is mainly greater than 50mm in the upstream, and 25-50mm in the middle and downstream, the substrate type mainly is quartz, calcite, and dolomite. The mineral compositions of the two spawning sites were analyzed by principal component analysis. Quartz and anorthose are more than 1 in composite scores, respectively ranked first and second, indicating that they play a dominant role in the mineral composition. This study could provide basic data and ideas for restoring <em>S. grahami</em> spawning ground.
dc.identifier.doihttps://doi.org/10.46989/001c.120233
dc.identifier.issn0792-156X
dc.identifier.urihttps://hdl.handle.net/10524/77238
dc.relation.ispartofThe Israeli Journal of Aquaculture - Bamidgeh
dc.subjectSchizothorax grahami
dc.subjectspawning ground
dc.subjectsurface flow field
dc.subjectsubstrate
dc.subjectphysical characteristics
dc.titleCharacteristics of surface flow field and substrate in the spawning ground of <em>Schizothorax grahami</em>
dc.typeArticle
dc.type.dcmiText
dspace.entity.type
prism.volume76

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Volume 76, Issue 3, 2024