Retention of Riverine Sediment and Nutrient Loads by Coastal Plain Floodplains

Noe, Gregory B.; Hupp, Cliff R.

doi:10.1007/s10021-009-9253-5

Cited by 158 publications

(134 citation statements)

References 49 publications

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“…In the present study, the sedimentation rates found for the restored floodplain (Table 1) Walling et al, 1999) and also with sedimentation rates at 17 sites located along rivers in the Chesapeake watershed in the USA (303-4600 g.m x2 .yr x1 ; Noe and Hupp, 2009). A study conducted by Kronvang et al (2007) in four Danish floodplains revealed deposition rates between 3000 and 6570 g.m x2 .yr x1 .…”

Section: Discussionsupporting

confidence: 71%

“…Several studies have demonstrated the importance of floodplains as a trap for sediment and sediment-associated nutrients (Walling et al, 1999;Olde Venterick et al, 2006;Kronvang et al, 2007;Noe and Hupp, 2009). In the present study, the sedimentation rates found for the restored floodplain (Table 1) Walling et al, 1999) and also with sedimentation rates at 17 sites located along rivers in the Chesapeake watershed in the USA (303-4600 g.m x2 .yr x1 ; Noe and Hupp, 2009).…”

Section: Discussionmentioning

confidence: 99%

“…Nevertheless, there are still some uncertainties regarding the efficiency of floodplains as a restoration measure (e.g., Aldous et al, 2007;Craig et al, 2008) and especially about the fate of deposited nutrients after flood events (Noe and Hupp, 2009). Indeed, while several studies have documented N and P deposition in natural floodplains (Johnston, 1991;Brunet et al, 1994;Walling et al, 1999;Olde Venterick et al, 2006, Kronvang et al, 2007 or restored floodplains (Kronvang et al, 1998, retention of the sediment-associated nutrients after their deposition has been overlooked.…”

Section: Introductionmentioning

confidence: 99%

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Low nitrogen and phosphorus release from sediment deposited on a Danish restored floodplain

Audet

Hoffmann

Jensen

2011

Ann. Limnol. - Int. J. Lim.

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-River floodplains and riparian areas are often considered efficient traps for sediment and sediment-associated nutrients such as nitrogen (N) and phosphorus (P). However, few studies have focused on the fate of sediment-bound N and P after deposition on floodplains. In this study, the leaching of N and P from sediment deposited on a Danish-restored floodplain was quantified by placing trapped sediment samples under a rainfall simulator and exposing them to in situ temperatures and precipitation for two months. The nitrate release was 2.72-1600 mg NO 3 -N.g x1 DW which corresponded to 0.06-6.42% of the total nitrogen contained in the sediment. Total dissolved phosphorus (TDP) release was 0.44-3.17 mg P.g x1 DW, corresponding to 0.021-0.065% of the TP content of the sediment. Our results indicate that N and P release from floodplain sediment subjected to rainfall events is very low, which should be considered when applying floodplain restoration to mitigate the load of N and P to rivers.

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Section: Discussionsupporting

confidence: 71%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Low nitrogen and phosphorus release from sediment deposited on a Danish restored floodplain

Audet

Hoffmann

Jensen

2011

Ann. Limnol. - Int. J. Lim.

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“…Recent measurements indicate that contemporary floodplains in the Mid-Atlantic region are actively storing sediment, but the temporal and spatial limits to storage are not well documented [Schenk and Hupp, 2009;Noe and Hupp, 2009]. Comparison of third-and fifth-order alluvial valleys in the UPRW indicated that storage opportunities increase with drainage area.…”

Section: Discussionmentioning

confidence: 99%

Closing the Gap Between Watershed Modeling, Sediment Budgeting, and Stream Restoration

Smith¹,

Belmont²,

Wilcock³

2013

Stream Restoration in Dynamic Fluvial Systems

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(2011), Closing the gap between watershed modeling, sediment budgeting, and stream restoration, in Stream Restoration in Dynamic Fluvial Systems: Scientific Approaches, Analyses, and Tools, Geophys. Monogr. Ser., vol. 194 The connection between stream restoration and sediment budgeting runs both ways: stream restoration is proposed as a means to reduce sediment yields, but an accurate understanding of sediment supply is necessary to design an effective project. Recent advances in monitoring technology, geochemical techniques, high-resolution topography data, and numerical modeling provide new opportunities to estimate sediment erosion, transport, and deposition rates; upscale them in a geomorphically relevant fashion; and synthesize sediment dynamics at watershed scales. For practical application at large scale, watershed models used to predict yield often do not resolve lower-order channels, leaving an essential "blind spot" regarding sediment processes. We illustrate the challenges and emerging approaches for estimating sediment budgets using examples from two very different physiographic settings: the Mid-Atlantic Piedmont and the agricultural plains of southern Minnesota. We highlight common challenges and themes in defining an effective watershed sediment model. In both cases, reliable estimates of sediment yield depend essentially on the accurate identification of sediment sources and sinks and, hence, require careful delineation of landscape units and identification of dominant sediment sources and sinks. The primary elements needed to bridge the gap between sediment budgeting, watershed modeling, and stream restoration are (1) specificity regarding location, mechanism, and rates of erosion, (2) accurate accounting of sediment storage, (3) appropriate methods for upscaling local observations, (4) efficient means for incorporating multiple lines of evidence to constrain budget estimates, and (5) stream restoration methods that incorporate sediment supply in assessment and design procedures.

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“…The location of the interface between the oxic and the anoxic layer is known to have a major impact on trace metal burial or remobilisation (Merz et al, 2009). Another possible mechanism is the scavenging of metals by accumulation on autochthonous organic matter, the availability of which increases with increasing of water residence time (Ahearn et al, 2006;Hein et al, 2004;Noe and Hupp, 2009;Tockner et al, 1999). Reservoirs along a river could have similar effects as they increase the residence time of water.…”

Section: Trace Metal Spatial Distribution and Partitioningmentioning

confidence: 99%

Lateral and longitudinal patterns of water physico-chemistry and trace metal distribution and partitioning in a large river floodplain

Peter

Castella

2017

Science of The Total Environment

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• Distribution of trace metals in different floodplain water bodies is not well known.• Water, sediment, SPM and invertebrates from different types of water bodies were analyzed.• Trace metal partitioning varied between connected and disconnected sites.• Lateral gradient was more important than the longitudinal gradient.• Observed differences need to be considered in floodplain management. Floodplain water bodies provide habitat to diversified ecological communities. Floodplains are also among the most impacted aquatic ecosystems. While the link between the lateral connectivity of floodplain sites to the main channel and their plant, fish and invertebrate communities has been well established, detailed information on chemical characteristics and particularly on trace metal spatial distribution and partitioning is scarce. The aim of this study was to examine the link between the lateral connectivity and physico-chemical variables, their trace metal concentrations and partitioning as well as the upstream-downstream gradient of these parameters. In connected and disconnected water bodies of the Rhône River upstream and downstream of the city of Lyon, we measured major ions, dissolved organic carbon, trace metal concentrations (Al, Cr, Ni, Cu, Zn, Cd, Pb and U) in water, suspended particulate matter (SPM) and sediment. The results revealed a clear difference between connected and disconnected water bodies. pH, SPM, Na + , and NO 3 − concentrations were lower in disconnected sites while conductivity, DOC, Ca 2+ and Mg 2+ were higher. Conductivity and a part of the major ion concentrations increased in the downstream sections. Trace metal concentrations and partitioning varied between connected and disconnected sites. In the dissolved fraction, trace metal concentrations were higher in connected sites. In the surface sediment, concentrations were higher in disconnected sites for the majority of metals. The upstream-downstream gradient was less important than the connected-disconnected gradient. Only three metals in the dissolved fraction (Cu, Cd and Pb) showed a clear increase in downstream sections. Overall, the study shows that the functioning of floodplains produces strong spatial patterns concerning the concentrations and partitioning of trace metals. These findings improve our understanding of trace metal biogeochemistry in floodplains and have important applications for floodplain restoration projects. © 2017 Elsevier B.V. All rights reserved. G R A P H I C A L A B S T R A C T a b s t r a c t a r t i c l e i n f o

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Retention of Riverine Sediment and Nutrient Loads by Coastal Plain Floodplains

Cited by 158 publications

References 49 publications

Low nitrogen and phosphorus release from sediment deposited on a Danish restored floodplain

Low nitrogen and phosphorus release from sediment deposited on a Danish restored floodplain

Closing the Gap Between Watershed Modeling, Sediment Budgeting, and Stream Restoration

Lateral and longitudinal patterns of water physico-chemistry and trace metal distribution and partitioning in a large river floodplain

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