Effects of periphyton biomass and suspended solids on river bed permeability and hyporheic oxygen balances

Ibisch, Ralf; Borchardt, Dietrich

doi:10.1080/03680770.2001.11901954

Cited by 3 publications

(8 citation statements)

References 8 publications

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“…Primary production estimated for the Lahn based on different reaeration estimators was on average four times higher (experiments in September 1999) than in the Necker. This seems to be reasonable, as mean chlorophyll a values of the Lahn determined at the same period by Ibisch and Borchardt (2002) exceeded the maximum values in the Necker by more than 200%. This result is in accordance to our second hypothesis that high nutrient levels in the Lahn increase primary production and subsequently benthic surface respiration.…”

Section: Algal Primary Productionmentioning

confidence: 90%

“…30% of the total river flow at baseflow conditions is treated wastewater. The land use in the catchment area (453 km 2 ) is dominated by agriculture and forestry and the river is in an almost eutrophic state (Ibisch and Borchardt 2002).…”

Section: Study Sitementioning

confidence: 99%

“…As the frequency of floods was much lower than in the pre-alpine river, algal biomass was obviously not affected during long periods of base-flow condition. Thus, the importance of hyporheic respiration was further reduced (Ibisch and Borchardt 2002).…”

Section: Algal Primary Productionmentioning

confidence: 99%

“…We expected the contribution of the hyporheic zone to ecosystem metabolism to be of less importance because (1) due to high nutrient levels (N and P) the growth and primary production of the algal biofilm on the sediment surface may exceed the reported production and, consequently, the respiration of epilithic biofilms in more oligotrophic environments, (2) due to agricultural activity in the catchment of the Lahn, an enhanced erosion increases suspended sediment transport in the river, and (3) both epibenthic algae and clogged sediment interstices significantly reduced the vertical exchange in the River Lahn (Ibisch and Borchardt 2002;Saenger and Zanke 2009) leading to a reduced input of organic carbon and oxygen into the hyporheic zone. On the other hand, a large pool of easily degradable pool of organic matter is continuously produced by benthic algae, providing a resource for heterotrophic degradation.…”

Section: Introductionmentioning

confidence: 99%

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Vertical hydraulic exchange and the contribution of hyporheic community respiration to whole ecosystem respiration in the River Lahn (Germany)

et al. 2009

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To quantify the contribution of hyporheic community respiration to whole running-water ecosystem respiration in a cultural landscape setting, we studied the vertical hydraulic exchange in riffle-pool sequences of the River Lahn (Germany). We used flow through curves from four tracer experiments to estimate flow velocities in the surface and subsurface water. Generally, vertical exchange velocities were higher in riffle sections and a high temporal variability was observed (range of values 0.11-1.08 m day -1 ). We then used (1) the exchange velocities and (2) time series of dissolved oxygen concentration in surface and subsurface water to calculate hyporheic respiration. Hyporheic respiration was estimated in a range of 10-50 mg O 2 m -3 day -1 for the upper sediment layer (first 20 cm). It was much lower in the deeper sediment layer (20-40 cm), ranging from 0 to 10 mg O 2 m -3 day -1 (volumes are volumes of interstitial water; the average porosity was 20%). We determined primary production and respiration of the biofilm growing on the sediment by modelling dissolved oxygen concentration time series for a 2,450 m long stream reach (dissolved oxygen concentrations with diurnal variations from 8 to 16 mg L -1 ). Modelled respiration rates ranged from 2 to 21 g O 2 m 2 day -1 . All information was integrated in a system analysis with numerical simulations of respiration with and without sediments. Results indicated that hyporheic respiration accounted for 6 to 14% of whole ecosystem respiration. These values are much lower than in other whole system respiration studies on more oligotrophic river systems.

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Section: Algal Primary Productionmentioning

confidence: 90%

Section: Study Sitementioning

confidence: 99%

Section: Algal Primary Productionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Vertical hydraulic exchange and the contribution of hyporheic community respiration to whole ecosystem respiration in the River Lahn (Germany)

et al. 2009

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“…TSS is also considered to cause habitat deterioration for the benthic zone (Alabaster and Lloyd, 1980;DFO, 2000;Henley et al, 2000;Paul and Meyer, 2008). They can, for instance, blanket the bottom of riverbeds inhibiting exchange processes in the hyporheic zone, or block gravel spawning beds (EIFAC, 1969;Edberg and Hofsten, 1973;Burton and Pitt, 2002;Ibisch and Borchardt, 2003). This siltation process is also described in the literature as "embeddedness", i.e., the proportion of coarse bed covered by fine sediment, <2 mm, essentially TSS (Waters, 1995).…”

Section: Introductionmentioning

confidence: 97%

Sediment contamination assessment in urban areas based on total suspended solids

Rossi

Chèvre

Fankhauser³

et al. 2013

Water Research

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Ecosystem engineering by periphyton in Alpine proglacial streams

Roncoroni,

Ballu,

Selitaj

et al. 2023

Earth Surf Processes Landf

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Stream periphytons are candidate ecosystem engineers in proglacial margins. Here, we quantify the extent to which they are engineers for the case of hillslope‐fed tributaries in the terrace zones of proglacial margin alluvial plains. Candidate ecosystem engineering effects relate to periphyton‐driven changes in (1) vertical infiltration of water, which in turn could aid plant colonization and hence local surface stabilization, and (2) near‐bed hydraulics, notably near‐bed turbulence properties. We ran two flume experiments in parallel in the proglacial margin of the Otemma glacier (Switzerland), reproducing the environmental conditions found in terrace streams. In both experiments, we followed periphyton development on initially bare sediments for 28 days. Then, whilst the experiment continued undisturbed in one flume, in the second and over a further 26 days, we introduced disturbances in the form of desiccation events. Throughout the entire experiment length, we collected imagery for close‐range SfM‐MVS photogrammetry, data on vertical infiltration, and near‐bed hydraulics. The experiments showed that periphyton development significantly changed the streambed properties. First, periphyton development over the timescale of a few days reduced bed roughness and clogged the benthic interstitial space, reducing water infiltration. These effects were insensitive to the disturbance regime. Second, the changes in streambed roughness modified the near‐bed turbulent structures, and this resulted in a reduction of bursting events and in the modification of the turbulent kinetic energy at the near‐bed layer. The latter, however, appeared to be less important in these environments as compared with the impacts on infiltration. Given the low water retaining capacity of glacial sediments, the observation that periphyton can reduce vertical infiltration explains wider observations of their importance in glacial floodplains where vegetation succession is critically constrained by water availability. The relatively reduced impacts on near‐bed turbulence also contribute to explaining why disturbance in proglacial margin streams remains a key limit on ecological succession.

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Effects of periphyton biomass and suspended solids on river bed permeability and hyporheic oxygen balances

Cited by 3 publications

References 8 publications

Vertical hydraulic exchange and the contribution of hyporheic community respiration to whole ecosystem respiration in the River Lahn (Germany)

Vertical hydraulic exchange and the contribution of hyporheic community respiration to whole ecosystem respiration in the River Lahn (Germany)

Sediment contamination assessment in urban areas based on total suspended solids

Ecosystem engineering by periphyton in Alpine proglacial streams

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