Influence of riverbank stabilization techniques on taxonomic and functional macrobenthic communities

Cavaillé, P.; Dumont, Bernard; Looy, Kris Van; Floury, Mathieu; Tabacchi, Eric; Évette, André

doi:10.1007/s10750-017-3380-3

Cited by 25 publications

(16 citation statements)

References 46 publications

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“…Although several studies, like ours, have reported greater local richness and abundance of macroinvertebrates on riprap (see Reid & Church, 2015;Shields, Cooper, & Testa, 1995), contrasting results from other studies indicate macroinvertebrate responses are context dependent. Cavaillé et al (2018) reported lower taxonomic richness compared with natural banks on riprap and riprap-bioengineered sites similar to the willow-riprap of this study, whereas Brunke, Hoffmann, & Pusch (2001) found riprap supported high invertebrate diversity and abundance in the River Spree, Germany, similar to coarse woody debris and slightly higher than alder roots. In a river of similar size to the Waikato, the Elbe River in Germany, native macroinvertebrate richness and secondary production was lower on riprap compared with other engineered bank structures indicating that this novel habitat provided suboptimal conditions, although natural banks were not available for comparison on that river (Brabender et al, 2016).…”

Section: Abundance and Community Compositionsupporting

confidence: 41%

“…The shore-zone habitat templet in this study was characterized by marked variations in the combination of water velocity, shade and substrate size/composition among different habitat types. Several other studies have highlighted that riprap can create novel habitats in low-gradient rivers by introducing much larger substrate elements than occur on natural banks, which often consist of fine material with underwater structure from fallen trees (Brabender et al, 2016;Cavaillé et al, 2018;Eros, Toth, Sevcsik, & Schmera, 2008;Wensink & Tiegs, 2016). Riprap can also reduce wood recruitment and shade along river edges (Reid & Church, 2015;Massey, Biron, & Choné, 2017), although in this study, the combination of willow and riprap Finally, riprap can be characterized by higher water velocity than other habitat types (e.g., Massey et al, 2017;Pander et al, 2017), but in this study, this was not evident at sampling points likely due to eddies created by large rocks upstream.…”

Section: Abundance and Community Compositionmentioning

confidence: 99%

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Partitioning of macroinvertebrate communities in a large New Zealand river highlights the role of multiple shore‐zone habitat types

Shell

Collier

2018

River Research & Apps

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Bank stabilization is increasing along large rivers as urban areas expand, and the need to protect infrastructure increases in the face of changing climate and flow patterns, but the cumulative effects of different stabilization approaches on reach‐scale biodiversity are not well understood. We investigated physical habitat characteristics and macroinvertebrate community composition and diversity for four shore‐zone habitat types across nested spatial scales over two sampling occasions. Distinct physical conditions were evident for riprap, beach and willow (mixed trees dominated by Salix spp.) habitats, reflecting variations in the combinations of shade, water velocity and substrate size/type, but there was wide variation in habitat conditions for mixed willow‐riprap sites. Additive biodiversity partitioning decomposed reach (γ) diversity into within (α) and among (β1) sample, among habitat (β2), and among site (β3) components, and highlighted significant effects of all spatial scales on macroinvertebrate diversity. Low autumn water levels led to truncated species accumulation curves at beach sites where macrophyte beds that supported macroinvertebrates became stranded, or elevated species accumulation curves for exposed willow‐riprap sites where the river benthos was sampled during hydrological disconnection of bank habitats. Spring and autumn differences in macroinvertebrate community composition were stronger than differences between habitat types. Our findings (a) highlight the interacting effect of river level with shore‐zone habitat function, and (b) underscore the importance of maintaining a diversity of bank habitat types at multiple sites along river shore‐zones to maximize macroinvertebrate diversity.

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Section: Abundance and Community Compositionsupporting

confidence: 41%

Section: Abundance and Community Compositionmentioning

confidence: 99%

Partitioning of macroinvertebrate communities in a large New Zealand river highlights the role of multiple shore‐zone habitat types

Shell

Collier

2018

River Research & Apps

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“…However, despite this evolution in restauration policy and practices, the protection of key assets still requires locally limiting bank erosion [Peeters et al, 2018] and the use of soil bioengineering techniques appears to be an appropriate option. The objective of these techniques (fascines, brush mattresses, brush layers, wattles, cuttings and plantings, and seedlings [Zeh, 2007]) is to use the natural properties (resistance, resilience, stiffness) of living native species to mimic naturally stable banks consolidated by vegetation; the aim is to fulfil erosion control functions as well as to recover the riverbank's ecological functions [Li and Eddleman, 2002;Cavaillé et al, 2018]. This paper presents the results of new experiments investigating resistance of one of the most commonly used of these techniques, fascines, to protect the bank toe, particularly in the alpine context.…”

Section: Introductionmentioning

confidence: 99%

Design of fascines for riverbank protection in alpine rivers: Insight from flume experiments

Recking

Piton

Montabonnet

et al. 2019

Ecological Engineering

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We present the results of flume experiments specifically designed to investigate the conditions required for successful bank protection using fascines, considered in the early and critical stage of their installation (no developed root system), in the alpine context. A total of 145 runs were performed with erodible banks, considering different combinations of protection design (no protection, rip-raps, twigs), bed mobility (with or without bedload), discharge (from low to exceptional floods), and bend curvature radius. None of the runs showed any direct fascine grabbing by the flow observed; all destruction was the consequence of bank scouring, erosion and collapse around the structure. In all cases, most destructive effects resulted from water recirculation inside the bank. Thus, we conclude that all measures aiming to reduce water circulations during the first stage of the fascine construction and development are recommended. This include large bend curvature radii (when possible), fining of the filling material, use of antiscouring twigs, optimisation of the programming of the works with consideration of the hydrology (shape of hydrographs) and regular survey of the structure. Our experiments show that anti-scouring twigs have a real protective effect by modifying the local hydraulics and promoting sediment deposition at the bank toe.

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“…River catchments in the temperate climate zone are characterized by high ground water levels and frequent spring floods; therefore, agricultural activities can compromise water quality in catchment areas [2,46]. In farmland situated in the vicinity of rivers, fertilization and agricultural treatments contribute to uneven distribution of mineral compounds and contamination of surface and underground waters with nutrients, mostly nitrogen and phosphorus [8,[46][47][48][49][50].…”

Section: Discussionmentioning

confidence: 99%

“…Their structure and function respond to both abiotic and biotic factors. Abiotic components such as hydrology [1][2][3], geomorphology [4,5], hillslope-riparian interactions [6], groundwater-surface-water interactions [7,8], nutrient availability [9][10][11], light [12], dissolved gases [13], and water chemistry [14], play an important role in the development of biological communities in streams and rivers. These external determinants may be regarded as bottom-up controls of the trophic chain [15].…”

Section: Introductionmentioning

confidence: 99%

Water Quality as an Indicator of Stream Restoration Effects—A Case Study of the Kwacza River Restoration Project

Mrozińska

Glińska-Lewczuk

Burandt

et al. 2018

Water

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River restoration projects rely on environmental engineering solutions to improve the health of riparian ecosystems and restore their natural characteristics. The Kwacza River, the left tributary of the Słupia River in northern Poland, and the recipient of nutrients from an agriculturally used catchment area, was restored in 2007. The ecological status of the river’s biotope was improved with the use of various hydraulic structures, including palisades, groynes and stone islands, by protecting the banks with trunks, exposing a fragment of the river channel, and building a by-pass near a defunct culvert. The effects of restoration treatments were evaluated by comparing the physicochemical parameters of river water along the 2.5 km restored section between the source and the mouth to the Słupia, before restoration and 6 years after hydrotechnical treatments. A total of 18 physicochemical parameters were analyzed at 10 cross-sections along the river. The greatest changes were observed in the concentrations of NO3−-N and NH4+-N, which decreased by 70% and 50%, respectively. Dissolved oxygen concentration increased by 65%. Chloride values increased by 44%, and chlorophyll-a concentration increased by 30% after the project. The cut-off channel (by-pass), semi-palisades, and single groynes were the treatments that contributed most to water quality improvement. The results of this study indicate that river restoration projects can substantially reduce nitrogen pollution, which is particularly important in agricultural areas. Such measures can effectively reinstate natural conditions in river ecosystems. Hydrochemical monitoring is required to control the parameters of restored rivers.

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Influence of riverbank stabilization techniques on taxonomic and functional macrobenthic communities

Cited by 25 publications

References 46 publications

Partitioning of macroinvertebrate communities in a large New Zealand river highlights the role of multiple shore‐zone habitat types

Partitioning of macroinvertebrate communities in a large New Zealand river highlights the role of multiple shore‐zone habitat types

Design of fascines for riverbank protection in alpine rivers: Insight from flume experiments

Water Quality as an Indicator of Stream Restoration Effects—A Case Study of the Kwacza River Restoration Project

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