Early cultivation and bioturbation cause high long-term soil erosion rates in tropical forests: OSL based evidence from Ghana

Breuning‐Madsen, Henrik; Kristensen, J. A.; Awadzi, Theodore W.; Murray, Andrew

doi:10.1016/j.catena.2016.12.002

Cited by 14 publications

(7 citation statements)

References 27 publications

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“…This puts our estimates into a comparable range (except for trap 1 in plot HO3 that yielded ∼ 12 Mg ha −1 yr −1 ). However, short-term experiments can easily overestimate soil-erosion rates if upscaled to landscape level (Breuning-Madsen et al, 2017). The observations by Breuning-Madsen et al (2017) would imply that the soil losses we obtained for oil-palm plantations are ∼ 2 orders of magnitude higher than in a secondary forest (Breuning-Madsen et al, 2017).…”

Section: Si Am Losses Through Topsoil Erosionmentioning

confidence: 76%

“…However, short-term experiments can easily overestimate soil-erosion rates if upscaled to landscape level (Breuning-Madsen et al, 2017). The observations by Breuning-Madsen et al (2017) would imply that the soil losses we obtained for oil-palm plantations are ∼ 2 orders of magnitude higher than in a secondary forest (Breuning-Madsen et al, 2017). Considerable erosion (soil loss of ∼ 35 cm during a 15-year cultivation period, which corresponds to ∼ 28 Mg ha −1 yr −1 ) was noted by Guillaume et al (2015), who compared δ 13 C values in soil profiles on the same well-drained oil-palm plantations of our study region.…”

Section: Si Am Losses Through Topsoil Erosionmentioning

confidence: 99%

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Oil-palm management alters the spatial distribution of amorphous silica and mobile silicon in topsoils

Greenshields¹,

Lühe²,

Hughes³

et al. 2023

SOIL

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Abstract. Effects of oil-palm (Elaeis guineensis Jacq.) management on silicon (Si) cycling under smallholder oil-palm plantations have hardly been investigated. As oil palms are Si accumulators, we hypothesized that management practices and topsoil erosion may cause Si losses and changes in spatial Si concentration patterns in topsoils under oil-palm cultivation. To test this hypothesis, we took topsoil samples under mature oil-palm plantations in well-drained and riparian areas of Jambi Province, Indonesia. The samples were taken from four different management zones within each oil-palm plot: palm circles, oil-palm rows, interrows, and below frond piles. We quantified mobile Si (SiM) and Si in amorphous silica (SiAm) by the extraction of CaCl2 and NaCO3, respectively. Both fractions are important Si pools in soils and are essential for plant–soil Si cycling. We further installed sediment traps on sloping, well-drained oil-palm plantations to estimate the annual loss of soil and SiAm caused by erosion. In well-drained areas, mean topsoil SiAm concentrations were significantly higher below frond piles (3.97 ± 1.54 mg g−1) compared to palm circles (1.71 ± 0.35 mg g−1), oil-palm rows (1.87 ± 0.51 mg g−1), and interrows (1.88 ± 0.39 mg g−1). In riparian areas, the highest mean topsoil SiAm concentrations were also found below frond piles (2.96 ± 0.36 mg g−1) and in grass-covered interrows (2.71 ± 0.13 mg g−1), whereas topsoil SiAm concentrations of palm circles were much lower (1.44 ± 0.55 mg g−1). We attributed the high SiAm concentrations in topsoils under frond piles and in grass-covered interrows to phytolith release from decaying oil-palm fronds, grasses, and sedges. The significantly lower SiAm concentrations in palm circles (in both well-drained and riparian areas), oil-palm rows, and unvegetated interrows (only in well-drained areas) were explained by a lack of litter return to these management zones. Mean topsoil SiM concentrations were in the range of ∼ 10–20 µg g−1. They tended to be higher in riparian areas, but the differences between well-drained and riparian sites were not statistically significant. Soil-loss calculations based on erosion traps confirmed that topsoil erosion was considerable in oil-palm interrows on slopes. Erosion estimates were in the range of 4–6 Mg ha−1 yr−1, involving SiAm losses in a range of 5–9 kg−1 ha−1 yr−1. Based on the observed spatial Si patterns, we concluded that smallholders could efficiently reduce erosion and support Si cycling within the system by (1) maintaining a grass cover in oil-palm rows and interrows, (2) incorporating oil-palm litter into plantation management, and (3) preventing soil compaction and surface-crust formation.

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Section: Si Am Losses Through Topsoil Erosionmentioning

confidence: 76%

Section: Si Am Losses Through Topsoil Erosionmentioning

confidence: 99%

Oil-palm management alters the spatial distribution of amorphous silica and mobile silicon in topsoils

Greenshields¹,

Lühe²,

Hughes³

et al. 2023

SOIL

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“…Bioturbation, defined as the reworking of soils and sediments by animals or plants, including burrowing, ingestion and defecation of sediment grains, is a primary driver of soil biodiversity and it has a profound effect on soil quality, fertility and ecology in agrosystems (Richards et al, 2011;Breuning-Madsen et al, 2017;Piron et al, 2017;Yu et al, 2017;Tuma et al, 2019). Here, bioturbation due to soil fauna, evaluated by weighting the biogenic structures in the mesh bags after one year (Fig.…”

Section: Bioturbationmentioning

confidence: 99%

Comparing the effects of soil fauna on litter decomposition and organic matter turnover in sustainably and conventionally managed olive orchards

2020

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“…The third is to apply a probabilistic model of rarefied sand grains and use the change in single grain luminescence ages versus depth to infer timescales of particle motion and soil Peclet numbers (Furbish, Roering, Almond, et al, , Furbish, Roering, Keen‐Zebert, et al, , 2018c). An additional method is to perform a regression of age versus depth to obtain an accumulation rate to track the movement of sediment (e.g., Bruening‐Madsen et al, ; Kristensen et al, ). The choice of method is dependent on the question at hand.…”

Section: Previous Research On Luminescence As a Sediment Tracermentioning

confidence: 99%

Luminescence as a Sediment Tracer and Provenance Tool

Gray

Jain

Sawakuchi

et al. 2019

Reviews of Geophysics

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Luminescence holds unique potential as a sediment tracer and provenance method. The tracer application of luminescence has key advantages including ease of measurement, relatively low cost, and applicability to geologically ubiquitous quartz and feldspar sand and silt. These advantages can help answer fundamental questions about geomorphology, sediment transport, sediment production, and the tectonic/climatic controls on source‐to‐sink sedimentary systems. There is a notable body of research on luminescence as a sediment tracer. These tracer methods range from identifying source locations based on unique luminescence characteristics, to observing changes in luminescence characteristics with transport, to using residual luminescence to infer rates of transport. Previous applications of luminescence include provenance and quantification of fluvial transport rate, tracing of coastal longshore drift, estimations of mixing rates in soil or sediment, and provenance of wind‐blown deposits. The few studies that compare luminescence methods with nonluminescence tracer methods show good agreement. However, more work is needed to test the application of luminescence tracers in sediments. Future research directions should focus on comparing luminescence‐based with nonluminescence tracer methods. Furthermore, research is needed on the effects of specific geomorphic processes on luminescence characteristics and residual doses. While there is significant potential for future research, luminescence is already a useful sediment tracer and provenance tool applicable to a wide range of geomorphic environments.

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Early cultivation and bioturbation cause high long-term soil erosion rates in tropical forests: OSL based evidence from Ghana

Cited by 14 publications

References 27 publications

Oil-palm management alters the spatial distribution of amorphous silica and mobile silicon in topsoils

Oil-palm management alters the spatial distribution of amorphous silica and mobile silicon in topsoils

Comparing the effects of soil fauna on litter decomposition and organic matter turnover in sustainably and conventionally managed olive orchards

Luminescence as a Sediment Tracer and Provenance Tool

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