Cited by 63Freshwater macroinvertebrate diversity and ecologyFish Ecology and Management StudiesHydrology and Sediment Transport Processes

Fine sediment reduces vertical migrations of Gammarus pulex (Crustacea: Amphipoda) in response to surface water loss

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Vadher, Atish N., Stubbington, Rachel, Wood, Paul J.·2015·Hydrobiologia

Abstract

Surface and subsurface sediments in river ecosystems are recognized as refuges that may promote invertebrate survival during disturbances such as floods and streambed drying. Refuge use is spatiotemporally variable, with environmental factors including substrate composition, in particular the proportion of fine sediment (FS), affecting the ability of organisms to move through interstitial spaces. We conducted a laboratory experiment to examine the effects of FS on the movement of Gammarus pulex Linnaeus (Crustacea: Amphipoda) into subsurface sediments in response to surface water loss. We hypothesized that increasing volumes of FS would impede and ultimately prevent individuals from migrating into the sediments. To test this hypothesis, the proportion of FS (1–2 mm diameter) present within an open gravel matrix (4–16 mm diameter) was varied from 10 to 20% by volume in 2.5% increments. Under control conditions (0% FS), 93% of individuals moved into subsurface sediments as the water level was reduced. The proportion of individuals moving into the subsurface decreased to 74% at 10% FS, and at 20% FS no individuals entered the sediments, supporting our hypothesis. These results demonstrate the importance of reducing FS inputs into river ecosystems and restoring FS-clogged riverbeds, to promote refuge use during increasingly common instream disturbances.

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  • The high mobility of G. pulex could have increased its microplastic uptake compared with other epibenthic species, highlighting species-specific traits in microplastic effects.

    “Moreover, the high mobility of G. pulex(46) could have increased microplastic uptake in comparison to the other epibenthic species, revealing the importance of species specific traits in the effects of microplastics on benthic invertebrates.”

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Authors
Vadher, A. N., Stubbington, R., & Wood, P. J.
Affiliations
  • Loughborough University (GB)
  • Nottingham Trent University (GB)
Corresponding author
Stubbington, Rachel
Venue
Hydrobiologia
Published
2015-02-07
Volume
753
Issue
1
Pages
61-71
ISSN
  • 0018-8158 (ISSN-L)
  • 1573-5117
OpenAlex
W1970049740
Cited by
63
References
61
Citations by year
2026: 3 · 2025: 4 · 2024: 2 · 2023: 4 · 2022: 8 · 2021: 6 · 2020: 5 · 2019: 4 · 2018: 8 · 2017: 11 · 2016: 4 · 2015: 4
FWCI
8.15
Type
journal article
Language
en
Open access
Locations
  • Hydrobiologia (publishedVersion, cc-by)
  • Nottingham Trent University's Institutional Repository (Nottingham Trent Repository) (acceptedVersion)
  • Loughborough University Institutional Repository (Loughborough University) (submittedVersion, cc-by)
  • Loughborough University Research Repository (Loughborough University) (submittedVersion, cc-by)
Topics
  • Physical Sciences › Environmental Science › Ecology › Freshwater macroinvertebrate diversity and ecology
  • Physical Sciences › Environmental Science › Nature and Landscape Conservation › Fish Ecology and Management Studies
  • Physical Sciences › Environmental Science › Ecology › Hydrology and Sediment Transport Processes
Keywords
fine sediment, Gammarus pulex, Amphipoda, vertical migration, subsurface sediments, refuge use, gravel substrate, riverbed restoration, surface water loss

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