The invertebrate community of the chalk stream hyporheic zone: spatio-temporal distribution patterns

Pacioglu, Octavian; Robertson, A.

doi:10.1051/kmae/2017001

Cited by 11 publications

(7 citation statements)

References 32 publications

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“…In fact, the reduction in density of large organisms through depth has been broadly reported as a general pattern in studies of riverbed communities (i.e. Dole-Olivier et al 1994, Marchant, 1995, Maridet & Philippe 1995, Davy-Bowker et al 2006, Pacioglu & Robertson 2017). Accordingly, it might be hypothesized that the depth gradient, as a set of different physicochemical factors, is also a key variable causing the decline of biomass and secondary production of riverbed systems.…”

Section: Hyporheic Zone As a Budget Of Biomass And Production In Strementioning

confidence: 93%

Interplay of hydrology, community ecology and pollutant attenuation in the hyporheic zone

Peralta‐Maraver

Reiss

Robertson

2018

Science of The Total Environment

113

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1) We describe the hierarchical interplay of hydrology, hyporheic ecology and transformation of nutrients and pollutants in the hyporheic zone (HZ). The exchange of water between the surface-subsurface generates the hyporheic exchange flow: the engine that drives the ecological functioning of the HZ. The magnitude and direction of hydrological fluxes in the HZ follow complex spatial patterns, strongly influenced by the temporal dynamics of surface flow in rivers. 2) The direction and magnitude of hydrological fluxes also shapes the structure of hyporheic communities (hyporheos). During surface disturbances such as flooding or drought, benthic organisms may also use the HZ as a refuge, although the importance of this role is debated. 3) Streambed organisms differ in their ability to colonise the HZ depending on the biological traits they possess. The reduction in oxygen concentration and pore size with increasing sediment depth imposes a limit on the distribution of macroinvertebrates, which are replaced by a suite of smaller organisms (meiofauna and protists) at deeper sediment layers. Therefore, a concomitant reduction in net biomass and productivity might be expected through depth. However, only a few studies have assessed the contribution of the hyporheos to whole system production, and they have focused only on the fraction of relatively large organisms. 4) The bioreactor ability of the HZ to transform nutrients and pollutants is an important ecosystem service sustained by the life activities of hyporheos. Biofilms have the key role in this process due to their capacity to metabolize a wide range of dissolved 3 compounds, including emerging pollutants. However, the residence time of water in pore sediments (resulting from hyporheic exchange flow) and the rest of the community (constantly reworking the sediments and grazing biofilms) are indirectly involved.

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Section: Hyporheic Zone As a Budget Of Biomass And Production In Strementioning

confidence: 93%

Interplay of hydrology, community ecology and pollutant attenuation in the hyporheic zone

Peralta‐Maraver

Reiss

Robertson

2018

Science of The Total Environment

113

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“…Most of the taxonomic groups collected from the Dagua River (Table 2) have been reported by various authors in different locations worldwide (e.g., Barrera González et al, 2014;Boon et al, 2016;Di Lorenzo et al, 2013 & Levei, 2015; Mugnai et al, 2015a;Pacioglu & Robertson, 2017;Peralta-Maraver et al, 2018;Pérez Fernández & Pérez Ruiz, 2015;Pryce et al, 2010;Stubbington et al, 2016;Tione et al, 2014). In the Neotropical region, Fernández (2002) and Fernández and Fossati-Gaschignard (2011) registered the Hydrachnidia and Oligochaete (Rodríguez, 2002) groups.…”

Section: Hyporheic and Macrobenthic Faunamentioning

confidence: 88%

Composition and distribution of hyporheic and macrobenthic fauna in a Neotropical mountain river, Colombia

Navia¹,

Kintz²,

Salamanca³

et al. 2023

Limnetica

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This study examined the composition and diversity of the invertebrate communities that inhabit the hyporheic zone (HZ) in the upper and lower basins of the Dagua River, a tropical mountain stream, and their relationship with the macrobenthic fauna. In the HZ, different taxa were collected, many of which have been reported in several regions worldwide, suggesting that the biodiversity of the hyporheic community in Colombian rivers may be high. Although the hyporheic and macrobenthic fauna shared a moderate percentage (> 50 %) of taxa, their ecological structures were different. The analysis of hyporheic filtrate water showed the presence of microplastic (MP) fibers as well as fauna, a condition that, based on the literature review, could represent a risk for the normal functioning of this river ecosystem.

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“…High CNESS dissimilarity values in this context reflect a low probability that two samples are drawn from the same community. For low values of m (the sample size parameter) the similarity between samples is strongly determined by dominant species, whereas for high values, the composition of the entire species assemblage becomes increasingly important [33]. CNESSa values were obtained using the R function from Zou and Axmacher [39], which is a standardized version of CNESS dissimilarity where values range between 0 (samples are the same) and 1 (samples are 100% different).…”

Section: Discussionmentioning

confidence: 99%

“…With the pump shaft inserted to 30 cm below river bed level, five litres of river water after [29,30] were extracted at five locations at each site (five replicates per sampling occasion). A 30 cm depth was selected because previous studies on the Lambourn [31] and on other chalk streams have shown that the hyporheic zone is very shallow compared to rivers draining other geologies, e.g., [32,33]. The locations of sampling points were approximately ten meters apart, zig-zagging across the river.…”

Section: Samplingmentioning

confidence: 99%

Invertebrate Responses to Restoration across Benthic and Hyporheic Stream Compartments

Robertson

Perkins

England

et al. 2021

Water

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River restoration is a multi-billion-dollar business, yet it is unclear whether benthic community health, which is routinely monitored, can be used as a proxy for the health of the hyporheos. Applying a Before-After-Control-Impact approach to a UK case study, we compared the effects of removing an impoundment on the hyporheos with effects on the benthos. We compared invertebrate biological traits that we expected to respond to the restoration. We constructed sample-size based diversity curves and determined β-diversity between compartments and reaches. Two years post-restoration, hyporheic taxon richness was significantly lower in the restored reach compared to the control. However, three years post-restoration taxon richness was significantly higher in the impact reach. The composition of the control and impact reach hyporheos was most dissimilar at the first sampling time point post-restoration and at this time there was a universal decrease in the relative abundance of burrowing organisms respiring through gills. We did not detect a signal of restoration on benthic assemblage diversity and composition, perhaps because reach-scale restorations can be overwhelmed by catchment-scale disturbances. Thus, the hyporheos and the benthos responded differently to restoration. Given the importance of the hyporheic zone in the provision of ecosystem function and services, it is clear that it should be included in future monitoring protocols that aim to assess river restoration success.

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The invertebrate community of the chalk stream hyporheic zone: spatio-temporal distribution patterns

Cited by 11 publications

References 32 publications

Interplay of hydrology, community ecology and pollutant attenuation in the hyporheic zone

Interplay of hydrology, community ecology and pollutant attenuation in the hyporheic zone

Composition and distribution of hyporheic and macrobenthic fauna in a Neotropical mountain river, Colombia

Invertebrate Responses to Restoration across Benthic and Hyporheic Stream Compartments

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