Estimating Be-7 association with soil particle size fractions for erosion and deposition modelling

Taylor, Alex; Blake, William H.; Keith-Roach, Miranda J.

doi:10.1007/s11368-014-0955-8

Cited by 23 publications

(20 citation statements)

References 24 publications

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“…2, some advanced users will need to account for particle size selectivity associated with soil erosion processes to convert inventory loss into soil erosion amounts. Different approaches are described in the literature (see Taylor et al 2014or Yang et al 2013. Here, we describe the method proposed by Taylor et al (2014) and compare to other methods so users can make an informed decision about which approach to take.…”

Section: Accounting For Size Selectivity Of Erosion and Deposition Prmentioning

confidence: 99%

“…Different approaches are described in the literature (see Taylor et al 2014or Yang et al 2013. Here, we describe the method proposed by Taylor et al (2014) and compare to other methods so users can make an informed decision about which approach to take. The PDM assumes that the soil profile is top-sliced by erosion and that loss of inventory is directly related to the mass depth of soil lost (see Fig.…”

Section: Accounting For Size Selectivity Of Erosion and Deposition Prmentioning

confidence: 99%

“…However, enrichment of 7 Be in fine soil fractions ( Fig. 4.2) means that these can be preferentially removed by erosion processes resulting in an augmented inventory deficit relative to erosion amount (Blake et al 2009;Taylor et al 2014). It should be noted that in some cases where soil has an overall fine texture and rainfall is of high magnitude, particle size correction may be less important (e.g.…”

Section: Accounting For Size Selectivity Of Erosion and Deposition Prmentioning

confidence: 99%

“…It should be noted that in some cases where soil has an overall fine texture and rainfall is of high magnitude, particle size correction may be less important (e.g. Porto and Walling 2014) The approach suggested by Taylor et al (2014) accounting for particle size selectivity follows the principles of the method proposed by He and Walling (1996) wherein particle size correction factors P and P for eroding and depositional sites respectively are calculated based on measurements of 'geometric' Specific Surface Area (SSA unit in m 2 g −1 ). P is derived from:…”

Section: Accounting For Size Selectivity Of Erosion and Deposition Prmentioning

confidence: 99%

“…1.1). In this context, Taylor et al (2014) propose that when correcting erosion rates (mass depth lost, kg m −2 ) for particle size enrichment it is, therefore, necessary to apply the correction factor to the inventory deficit only (i.e. A minus A ref ) which has the effect of suppressing the loss in inventory according to the particle size of the fraction mobilised.…”

Section: Accounting For Size Selectivity Of Erosion and Deposition Prmentioning

confidence: 99%

See 4 more Smart Citations

Conversion of Be-7 Activity Concentrations into Soil and Sediment Redistribution Amounts

Blake

Taylor

Iurian

et al. 2019

Assessing Recent Soil Erosion Rates Through the Use of Beryllium-7 (Be-7)

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Section: Accounting For Size Selectivity Of Erosion and Deposition Prmentioning

confidence: 99%

Section: Accounting For Size Selectivity Of Erosion and Deposition Prmentioning

confidence: 99%

Section: Accounting For Size Selectivity Of Erosion and Deposition Prmentioning

confidence: 99%

Section: Accounting For Size Selectivity Of Erosion and Deposition Prmentioning

confidence: 99%

Section: Accounting For Size Selectivity Of Erosion and Deposition Prmentioning

confidence: 99%

See 3 more Smart Citations

Conversion of Be-7 Activity Concentrations into Soil and Sediment Redistribution Amounts

Blake

Taylor

Iurian

et al. 2019

Assessing Recent Soil Erosion Rates Through the Use of Beryllium-7 (Be-7)

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Validating a mass balance accounting approach to using ⁷Be measurements to estimate event‐based erosion rates over an extended period at the catchment scale

Porto

Walling

Cogliandro

et al. 2016

Water Resources Research

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Use of the fallout radionuclides cesium‐137 and excess lead‐210 offers important advantages over traditional methods of quantifying erosion and soil redistribution rates. However, both radionuclides provide information on longer‐term (i.e., 50–100 years) average rates of soil redistribution. Beryllium‐7, with its half‐life of 53 days, can provide a basis for documenting short‐term soil redistribution and it has been successfully employed in several studies. However, the approach commonly used introduces several important constraints related to the timing and duration of the study period. A new approach proposed by the authors that overcomes these constraints has been successfully validated using an erosion plot experiment undertaken in southern Italy. Here, a further validation exercise undertaken in a small (1.38 ha) catchment is reported. The catchment was instrumented to measure event sediment yields and beryllium‐7 measurements were employed to document the net soil loss for a series of 13 events that occurred between November 2013 and June 2015. In the absence of significant sediment storage within the catchment's ephemeral channel system and of a significant contribution from channel erosion to the measured sediment yield, the estimates of net soil loss for the individual events could be directly compared with the measured sediment yields to validate the former. The close agreement of the two sets of values is seen as successfully validating the use of beryllium‐7 measurements and the new approach to obtain estimates of net soil loss for a sequence of individual events occurring over an extended period at the scale of a small catchment.

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Quantifying sediment and particulate phosphorus accumulation in restored floodplain wetlands using beryllium‐7 as a tracer

Blake

Hoffmann

Poulsen

et al. 2022

Hydrological Processes

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Floodplain wetlands in agricultural river basins provide critical ecosystem services such as nutrient retention, flood mitigation, carbon sequestration and ecological habitats and are a key component of a nature-based solution approach to restoration. In the context of the global challenge to reducing impact increasingly intensive food production on downstream ecosystems, restoration of wetlands in river floodplains offers a practical means for downstream retention and mitigation of P flux from upstream agricultural land. Data on short term, flood event related, accretion rates are, however, difficult to acquire via conventional monitoring yet such information is essential for restoration planning and scenario testing. Here, we evaluate a promising approach that applies naturally-occurring short-lived fallout radionuclide (FRN) 7 Be as a tracer to quantify sediment and, by association, particulate phosphorus retention rates in restored floodplain wetlands. Following a series of major inundation events, a restored floodplain unit was sampled to determine 7 Be inventories of the floodplain relative to an undisturbed reference site. This was undertaken in conjunction with direct measurement of sedimentation as an independent check of FRN results. Accretion rates up to 27 kg m À2 were recorded using 7 Be for recent deposition events compared to a longer term annual average rate of ca. 6 kg m À2 derived from 137 Cs measurements. While accretion rates varied spatially and temporally, there was excellent coherence between FRN-based measurements and direct measurements once rigorous correction for particle size effects on tracer properties had been undertaken. The study demonstrates the important contribution that FRN technology can make to support wetland management and restoration initiatives and the essential need for a systems thinking approach across the soil-sediment continuum. Such decision support tools will become increasingly important in the 21st century with growing anthropogenic pressure on aquatic ecosystems related to upstream food production, and implementation of more nature-based solutions such as restored wetlands to counteract these pressures.

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Estimating Be-7 association with soil particle size fractions for erosion and deposition modelling

Cited by 23 publications

References 24 publications

Conversion of Be-7 Activity Concentrations into Soil and Sediment Redistribution Amounts

Conversion of Be-7 Activity Concentrations into Soil and Sediment Redistribution Amounts

Validating a mass balance accounting approach to using ⁷Be measurements to estimate event‐based erosion rates over an extended period at the catchment scale

Quantifying sediment and particulate phosphorus accumulation in restored floodplain wetlands using beryllium‐7 as a tracer

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Estimating Be-7 association with soil particle size fractions for erosion and deposition modelling

Cited by 23 publications

References 24 publications

Conversion of Be-7 Activity Concentrations into Soil and Sediment Redistribution Amounts

Conversion of Be-7 Activity Concentrations into Soil and Sediment Redistribution Amounts

Validating a mass balance accounting approach to using 7Be measurements to estimate event‐based erosion rates over an extended period at the catchment scale

Quantifying sediment and particulate phosphorus accumulation in restored floodplain wetlands using beryllium‐7 as a tracer

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About

Validating a mass balance accounting approach to using ⁷Be measurements to estimate event‐based erosion rates over an extended period at the catchment scale