The Assessment of Fine Sediment Accumulation in Rivers Using Macro‐invertebrate Community Response

Extence, Chris A.; Chadd, Richard; England, Judy; Dunbar, Michael J.; Wood, Paul J.; Taylor, E.D.

doi:10.1002/rra.1569

Cited by 132 publications

(115 citation statements)

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“…Previous research has found that B. rhodani is highly sensitive to fine sediment (Wood et al, 2005). Similarly, taxa which are characterised as being particularly sensitive to the presence of fine sediments (Extence et al, 2013) were found in greater abundances in riffle tails where fine sediment accumulation was lower.…”

Section: Riffle-scale Variability In Benthic Communitiesmentioning

confidence: 84%

“…Functional feeding traits based on Tachet et al (2010) and abundances of taxa characterised as highly or moderately sensitive to sediment as defined by the Fine Sediment Sensitivity Ratings (FSSR; Extence et al, 2013) were calculated for each benthic sample. Feeding traits were assigned based on the dominant weighted group (fuzzy coded categories).…”

Section: Discussionmentioning

confidence: 99%

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Benthic and hyporheic macroinvertebrate distribution within the heads and tails of riffles during baseflow conditions

2017

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The distribution of lotic fauna is widely acknowledged to be patchy reflecting the interaction between biotic and abiotic factors. In an in situ field study, the distribution of benthic and hyporheic invertebrates in the heads (downwelling) and tails (upwelling) of riffles were examined during stable baseflow conditions. Riffle heads were found to contain a greater proportion of interstitial fine sediment than riffle tails. Significant differences in the composition of benthic communities were associated with the amount of fine sediment. Riffle tail habitats supported a greater abundance and diversity of invertebrates sensitive to fine sediment such as EPT taxa. Shredder feeding taxa were more abundant in riffle heads suggesting greater availability of organic matter. In contrast, no significant differences in the hyporheic community were recorded between riffle heads and tails. We hypothesise that clogging of hyporheic interstices with fine sediments may have resulted in the homogenisation of the invertebrate community by limiting faunal movement into the hyporheic zone at both the riffle heads and tails. The results suggest that vertical hydrological exchange significantly influences the distribution of fine sediment and macroinvertebrate communities at the riffle scale.

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Section: Riffle-scale Variability In Benthic Communitiesmentioning

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Benthic and hyporheic macroinvertebrate distribution within the heads and tails of riffles during baseflow conditions

2017

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“…Community abundance and taxa richness data were standardised (Z-scores) prior to further analysis (Zar, 1999;Martin-Smith & Armstrong, 2002). Functional feeding traits based on Tachet et al (2010) and abundances of taxa characterised as highly or moderately sensitive to sediment as defined by the Fine Sediment Sensitivity Ratings (FSSR given in Extence et al, 2013) were calculated for each sample. Feeding traits were assigned based on the dominant weighted group (fuzzy coded categories).…”

Section: Discussionmentioning

confidence: 99%

Fine sediment deposition and interstitial flow effects on macroinvertebrate community composition within riffle heads and tails

Mathers

Wood

2016

Hydrobiologia

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The distribution of macroinvertebrates in the heads and tails of riffles were examined in an in situ field experiment under stable baseflow conditions. Paired colonisation cylinders were used to examine the influence of vertical hydraulic exchange (upwelling and downwelling) and horizontal interstitial flow on the patterns of sedimentation and invertebrate colonisation. Sedimentation rates were greatest in cylinders permitting vertical and horizontal flow (VHE cylinders), and were significantly lower (29%) in cylinders where only vertical flow and ingress of fine sediment were possible (VE cylinders). The results demonstrate that horizontal interstitial flows represent an important pathway for fine sediment transport. Differences in fine sediment accumulation were also observed between riffle heads and tails. Significantly higher sedimentation rates were recorded in riffle tails, with the macroinvertebrate communities characterised by larger proportions of fine sediment tolerant taxa. In contrast, riffle head communities were characterised by greater proportions of sediment sensitive taxa, and in the case of VHE cylinders, shredders and EPT taxa. The results demonstrate that spatial differences in fine sediment deposition are evident at the riffle scale as a function of vertical and horizontal subsurface flows and that these factors play a key role in the distribution of macroinvertebrate fauna.

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“…Extence et al, 2013). Certain sites will be more susceptible than others to clogging depending on the river's capacity to transport material, which is reflected in local and upstream distributions of stream power (Barker et al, 2009;Bizzi andLerner, 2012, 2015).…”

Section: Fine Sediment Impacts and Ecological Implicationsmentioning

confidence: 99%

“…Aquatic macroinvertebrates are most often used for biomonitoring as they are easy to sample, relatively sedentary, ubiquitously distributed, have short life-cycles and high sensitivity to environmental change (Giller and Malmqvist, 1998). In recognition of the widespread nature of fine sediment pollution, Extence et al (2013) developed the Proportion of Sediment-sensitive Invertebrates (PSI) index (Tab. 1).…”

Section: Biomonitoringmentioning

confidence: 99%

Untitled

2016

Hrv. geogr. glas.

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Voda onečišćena finim sedimentom može biti velika opasnost za zdravlje ljudi i okoliš. No u studijama utjecaja na okoliš i stanovništvo komplicirano je i teško procijeniti utjecaje sedimenta, osobito kad je riječ o kratkim razdobljima. U radu se opisuje novi procesni okvir -procjena utjecaja riječnih sedimenata, Fluvial Sediment Impact Assessment (FSIA) -osmišljen za predviđanje i analizu problema onečišćenja riječnim sedimentima koji potječu od građevinskih projekata. Postavljaju se tri opća načela, šest metodoloških koraka i nekoliko tehničkih pristupa na kojima se okvir temelji.Prednosti su okvira sljedeće: temelji se na procesima, izričito se oslanja na dinamiku sedimenta, uključuje eksplicitne referencije za ekološke receptore, služi se općeprihvaćenim protokolima bionadzora, potiče multidisciplinaran pristup te se zasniva na bogatom iskustvu u velikim građevinskim projektima. Novi okvir nudi velik potencijal strože procjene stanja riječnog sedimenta prije, tijekom i nakon građevinske aktivnosti, primjerice polaganja naftnih i plinskih cjevovoda u rijeke.Ključne riječi: fini sedimenti, procjena utjecaja riječnih sedimenata, bionadzor, agroekologija, hidrologija Water contaminated with fine sediment can be a primary risk to human and ecological health. Sediment impacts are, however, complex and difficult to assess in environmental and social impact assessments, especially where timescales are short. We outline a new process-based framework -Fluvial Sediment Impact Assessment (FSIA) -designed to anticipate and address sediment pollution problems in rivers which may result from development projects. We establish three general principles, six methodological steps, and several technical approaches that underpin the framework.Advantages of the framework are that: it is process-based; it explicitly recognises sediment dynamics; it includes explicit reference to ecological receptors; it capitalises on well-established biomonitoring protocols; it encourages multi-disciplinary involvement; and it is based on substantial experience of major development projects. The new framework offers significant potential for more rigorous assessment of fluvial sediment conditions, before, during and after development activity, such as oil and gas pipeline crossings.

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The Assessment of Fine Sediment Accumulation in Rivers Using Macro‐invertebrate Community Response

Cited by 132 publications

References 138 publications

Benthic and hyporheic macroinvertebrate distribution within the heads and tails of riffles during baseflow conditions

Benthic and hyporheic macroinvertebrate distribution within the heads and tails of riffles during baseflow conditions

Fine sediment deposition and interstitial flow effects on macroinvertebrate community composition within riffle heads and tails

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