Catchment source contributions to the sediment-bound organic matter degrading salmonid spawning gravels in a lowland river, southern England

Collins, Adrian L.; Williams, L.J.; Zhang, Yusheng; Marius, M.; Dungait, Jennifer A. J.; Smallman, D.J.; Dixon, E. R.; Stringfellow, Anne; Sear, David; Jones, J. Iwan; Naden, Pamela S.

doi:10.1016/j.scitotenv.2013.03.093

Cited by 50 publications

(46 citation statements)

References 58 publications

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“…1) using mesh retrievable basket traps (n = 12 per river; cf. Walling et al, 2003;Collins et al, 2010aCollins et al, , 2013diameter = 12 cm, depth = 20 cm). Redd depressions or 'pots' were created in riffles used for spawning with a spade and pick axe.…”

Section: Sampling the Sediment-bound Organic Matter Infiltrating Artimentioning

confidence: 99%

“…These extractions were aligned with the key embryonic and early life stages of salmonids, namely eyeing, hatch, emergence and late spawning, respectively (cf. Collins et al, 2013). Following exhumation, the framework and interstitial material in the basket traps were separated in situ on the river bank using a 500 mm sieve.…”

Section: Sampling the Sediment-bound Organic Matter Infiltrating Artimentioning

confidence: 99%

“…Previous work has, however, predominantly focussed on understanding the key sources of minerogenic fine sediment infiltrating spawning substrates (Walling et al, 2003;Collins et al, 2010aCollins et al, , 2012a. More recently, Collins et al (2013) reported the application of a source fingerprinting procedure specifically for the sedimentbound organic matter ingressing salmonid spawning gravels in the River Blackwater catchment, in southern England. Given the initial success of that study, it was considered useful to apply and test the sourcing procedure elsewhere and to continue refining it.…”

Section: Introductionmentioning

confidence: 99%

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Sources of sediment-bound organic matter infiltrating spawning gravels during the incubation and emergence life stages of salmonids

Collins¹,

Williams²,

Zhang³

et al. 2014

Agriculture, Ecosystems & Environment

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Keywords:Sediment-bound organic matter Sources Carbon and nitrogen stable isotopes Near infra-red reflectance spectroscopy Salmonids Farm manures A B S T R A C TThe biodegradation of organic matter ingressing spawning gravels in rivers exerts an oxygen demand which is believed to contribute to detrimental impacts on aquatic ecology including salmonids. Catchment management strategies therefore require reliable information on the key sources of sediment-bound organic matter. Accordingly, a novel source fingerprinting procedure based on analyses of bulk stable 13 C and 15N isotope values and organic molecular structures detected using near infrared reflectance (NIR) spectroscopy was tested for assessing the primary sources of sediment-bound organic matter infiltrating artificial Atlantic salmon spawning redds in five rivers across England and Wales. Statistically-verified source fingerprints were identified using a combination of the Kruskal-Wallis Htest, principal component analysis and GA-driven discriminant function analysis. Interstitial sediment samples were obtained from artificial redds using retrievable basket traps inserted at the start of the salmonid spawning season and extracted subsequently in conjunction with critical juvenile phases (eyeing, hatch, emergence, late spawning) of fish development associated with incubation and emergence. Over the duration of these four basket extractions, the overall relative frequency-weighted average median source contributions to the interstitial sediment-bound organic matter sampled in the study rivers ranged between 26% (full uncertainty range 0-100%) and 44% (full uncertainty range 0-100%) for farm yard manures/slurries, 11% (full uncertainty range 0-75%) and 48% (full uncertainty range 0-99%) for damaged road verges, 16% (full uncertainty range (0-78%) and 52% (full uncertainty range (0-100%) for decaying instream vegetation and 4% (full uncertainty range 0-31%) and 10% (full uncertainty range (0-44%) for human septic waste. The results of mass conservation tests suggest that the procedure combining bulk 13 C and 15 N isotope values and NIR spectroscopy data on organic molecular structures is sensitive to the risks of significant non-conservative tracer behaviour in the fluvial environment and will therefore not necessarily work at all in-channel sites in all catchments.

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Section: Sampling the Sediment-bound Organic Matter Infiltrating Artimentioning

confidence: 99%

Section: Sampling the Sediment-bound Organic Matter Infiltrating Artimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sources of sediment-bound organic matter infiltrating spawning gravels during the incubation and emergence life stages of salmonids

Collins¹,

Williams²,

Zhang³

et al. 2014

Agriculture, Ecosystems & Environment

Self Cite

View full text Add to dashboard Cite

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“…This is particularly relevant for water and agricultural policy, as the prevention of environmental degradation and maintenance and/or sustainable intensification of agricultural production are simultaneously considered. Furthermore, other sediment sources, for example, from channel banks and road networks, may contribute significant proportions of the annual load (Rowan et al, 2012;Collins et al, 2013;Sherriff et al, 2014), particularly where strategies to reduce sediment loss on the hillslope scale such as sub-surface drainage may accelerate losses from channel sediment sources at the catchment scale. Assessment of such sources could be a useful insight to prioritise sediment management strategies (Wilson et al, 2008).…”

Section: Suspended Sediment Metrics In Five Agricultural Catchmentsmentioning

confidence: 99%

Investigating suspended sediment dynamics in contrasting agricultural catchments using ex situ turbidity-based suspended sediment monitoring

Sherriff

Rowan

Melland

et al. 2015

Hydrol. Earth Syst. Sci.

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Abstract. Soil erosion and suspended sediment (SS) pose risks to chemical and ecological water quality. Agricultural activities may accelerate erosional fluxes from bare, poached or compacted soils, and enhance connectivity through modified channels and artificial drainage networks. Storm-event fluxes dominate SS transport in agricultural catchments; therefore, high temporal-resolution monitoring approaches are required, but can be expensive and technically challenging. Here, the performance of in situ turbidity sensors, conventionally installed submerged at the river bankside, is compared with installations where river water is delivered to sensors ex situ, i.e. within instrument kiosks on the riverbank, at two experimental catchments (Grassland B and Arable B). The in situ and ex situ installations gave comparable results when calibrated against storm-period, depth-integrated SS data, with total loads at Grassland B estimated at 12 800 and 15 400 t, and 22 600 and 24 900 t at Arable B, respectively. The absence of spurious turbidity readings relating to bankside debris around the in situ sensor and its greater security make the ex situ sensor more robust. The ex situ approach was then used to characterise SS dynamics and fluxes in five intensively managed agricultural catchments in Ireland which feature a range of landscape characteristics and land use pressures. Average annual suspended sediment concentration (SSC) was below the Freshwater Fish Directive (78/659/EEC) guideline of 25 mg L −1 , and the continuous hourly record demonstrated that exceedance occurred less than 12 % of the observation year. Soil drainage class and proportion of arable land were key controls determining flux rates, but all catchments reported a high degree of inter-annual variability associated with variable precipitation patterns compared to the long-term average. Poorly drained soils had greater sensitivity to runoff and soil erosion, particularly in catchments with periods of bare soils. Well drained soils were less sensitive to erosion even on arable land; however, under extreme rainfall conditions, all bare soils remain a high sediment loss risk. Analysis of storm-period and seasonal dynamics (over the long term) using high-resolution monitoring would be beneficial to further explore the impact of landscape, climate and land use characteristics on SS export.

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“…River bank erosion upstream can also be a key source of fine sediment entering river systems (e.g. Lawler, 2008;Collins et al, 2010Collins et al, , 2013Massoudieh et al, 2013). However, to identify and understand the relative dominance of the many processes which drive the bank erosion system (e.g.…”

Section: Sediment Source Dynamicsmentioning

confidence: 99%

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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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Catchment source contributions to the sediment-bound organic matter degrading salmonid spawning gravels in a lowland river, southern England

Cited by 50 publications

References 58 publications

Sources of sediment-bound organic matter infiltrating spawning gravels during the incubation and emergence life stages of salmonids

Sources of sediment-bound organic matter infiltrating spawning gravels during the incubation and emergence life stages of salmonids

Investigating suspended sediment dynamics in contrasting agricultural catchments using ex situ turbidity-based suspended sediment monitoring

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