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Fish spawning habitat suitability for local bed change around instream boulders: experimental investigation - II.

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Title: Fish spawning habitat suitability for local bed change around instream boulders: experimental investigation - II.
Authors: Rahman, Mohammad Ziaur1 (AUTHOR), Baki, Abul B. M.1 (AUTHOR) abaki@clarkson.edu, Ghamry, Haitham2 (AUTHOR), Katopodis, Christos3 (AUTHOR)
Source: Journal of Ecohydraulics. Feb2026, Vol. 11 Issue 1, p17-33. 17p.
Subjects: Fish spawning, Boulders, Salmonidae, Habitat conservation, Sedimentation & deposition, Erosion, River channels
Abstract: Fish populations depend on suitable spawning habitats, and species like salmon and trout require specific substrate conditions for successful reproduction. Instream boulders enhance habitat heterogeneity by creating depressions and riffle spots that provide well-oxygenated gravel beds for egg deposition and predator refuge. Restoration projects often use rock-ramp boulder arrangements to improve habitat functionality. This study experimentally investigated the relationship between instream boulder placement, bed erosion, and sediment deposition to assess spawning habitat suitability. A total of 18 scenarios were tested, varying boulder concentrations (λ = 0 to 8.30%) across three bed slopes (0.5%, 1.0%, and 1.5%). Findings indicate that lower boulder densities result in minimal local scour depth and sediment transport, creating favorable spawning conditions for salmonids. These results provide valuable insights for habitat restoration efforts, guiding optimal boulder placement and concentration to enhance spawning success while maintaining streambed stability. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Ecohydraulics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 191459230
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
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  Data: Fish spawning habitat suitability for local bed change around instream boulders: experimental investigation - II.
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  Data: <searchLink fieldCode="AR" term="%22Rahman%2C+Mohammad+Ziaur%22">Rahman, Mohammad Ziaur</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Baki%2C+Abul+B%2E+M%2E%22">Baki, Abul B. M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> abaki@clarkson.edu</i><br /><searchLink fieldCode="AR" term="%22Ghamry%2C+Haitham%22">Ghamry, Haitham</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Katopodis%2C+Christos%22">Katopodis, Christos</searchLink><relatesTo>3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Ecohydraulics%22">Journal of Ecohydraulics</searchLink>. Feb2026, Vol. 11 Issue 1, p17-33. 17p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Fish+spawning%22">Fish spawning</searchLink><br /><searchLink fieldCode="DE" term="%22Boulders%22">Boulders</searchLink><br /><searchLink fieldCode="DE" term="%22Salmonidae%22">Salmonidae</searchLink><br /><searchLink fieldCode="DE" term="%22Habitat+conservation%22">Habitat conservation</searchLink><br /><searchLink fieldCode="DE" term="%22Sedimentation+%26+deposition%22">Sedimentation & deposition</searchLink><br /><searchLink fieldCode="DE" term="%22Erosion%22">Erosion</searchLink><br /><searchLink fieldCode="DE" term="%22River+channels%22">River channels</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Fish populations depend on suitable spawning habitats, and species like salmon and trout require specific substrate conditions for successful reproduction. Instream boulders enhance habitat heterogeneity by creating depressions and riffle spots that provide well-oxygenated gravel beds for egg deposition and predator refuge. Restoration projects often use rock-ramp boulder arrangements to improve habitat functionality. This study experimentally investigated the relationship between instream boulder placement, bed erosion, and sediment deposition to assess spawning habitat suitability. A total of 18 scenarios were tested, varying boulder concentrations (λ = 0 to 8.30%) across three bed slopes (0.5%, 1.0%, and 1.5%). Findings indicate that lower boulder densities result in minimal local scour depth and sediment transport, creating favorable spawning conditions for salmonids. These results provide valuable insights for habitat restoration efforts, guiding optimal boulder placement and concentration to enhance spawning success while maintaining streambed stability. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Ecohydraulics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=191459230
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1080/24705357.2025.2462319
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 17
        StartPage: 17
    Subjects:
      – SubjectFull: Fish spawning
        Type: general
      – SubjectFull: Boulders
        Type: general
      – SubjectFull: Salmonidae
        Type: general
      – SubjectFull: Habitat conservation
        Type: general
      – SubjectFull: Sedimentation & deposition
        Type: general
      – SubjectFull: Erosion
        Type: general
      – SubjectFull: River channels
        Type: general
    Titles:
      – TitleFull: Fish spawning habitat suitability for local bed change around instream boulders: experimental investigation - II.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Rahman, Mohammad Ziaur
      – PersonEntity:
          Name:
            NameFull: Baki, Abul B. M.
      – PersonEntity:
          Name:
            NameFull: Ghamry, Haitham
      – PersonEntity:
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            NameFull: Katopodis, Christos
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          Dates:
            – D: 01
              M: 02
              Text: Feb2026
              Type: published
              Y: 2026
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              Value: 24705357
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              Value: 11
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            – TitleFull: Journal of Ecohydraulics
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