Disentangling dust and sand deposition using a peat record in CE Europe (northern Romania): A multiproxy approach

Panait, Andrei; Hutchinson, Simon M.; Diaconu, Andrei‐Cosmin; Tanţău, Ioan; Feurdean, Angelica

doi:10.1016/j.palaeo.2019.109257

Cited by 12 publications

(10 citation statements)

References 74 publications

(82 reference statements)

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“…Greater biomass burning suggests greater deforestation, and the possibility of more soil entrainment. This links to our assertion of a dust-related control, as local dust sources may be linked to local deforestation and periodic topsoil exposure (Longman et al, 2017b;Panait et al, 2019).…”

Section: Comparison With Other Potential Driving Forcessupporting

confidence: 67%

“…This is analogous to nutrients supplied from volcanic ash deposition, which has been observed to stimulate greater peat accumulation in bogs in New Zealand (Ratcliffe et al, 2020) and Japan (Hughes et al, 2013). In other locations, such as the true raised bogs MLH, IZM and MOH, or blanket bogs BVU and ZNG, a more likely explanation is that the frequency of long-term atmospheric dust deposition in the Carpathian region (Longman et al, 2017b;Panait et al, 2019;Varga et al, 2016Varga et al, , 2013 helps to supply nutrients, a process known to stimulate considerable peat growth (Kylander et al, 2018).…”

Section: Long Term Carbon Accumulation and An Estimate Of The Carpathian Peatland Carbon Sinkmentioning

confidence: 78%

“…5, Table 4). This positive correlation is enhanced when the dust flux of Panait et al (2019) is compared to the individual CAR of TM (Fig. 5), with a highly significant positive correlation observed (Table 4).…”

Section: Comparison With Other Potential Driving Forcesmentioning

confidence: 90%

“…We also explore an estimate of the intensity of land use in the region, from Kaplan et al, (2011), which represents a proportion of the 5 degree grid square (centred on 46 °N, 24 °E) utilised for any type of human activity on the landscape. To investigate the impact of dust deposition, we used two regionally representative reconstructions of dust deposition through the Holocene, from MOH (Longman et al, 2017b), and TM (Panait et al, 2019). To investigate the impact of biomass burning on the record, we compare with the compilation of eastern European charcoal deposition from Feurdean et al (2020), from which we extract the boreal (BOR) record, as this covers all sites in this study.…”

Section: Composite Car Record and Data-model Comparisonmentioning

confidence: 99%

“…Some previous work also highlighted a range of other drivers behind peat accumulation rates, with mineral dust input listed as the primary driver of peat growth in a Swedish peatland (Kylander et al, 2018). We use the two existing records of dust deposition in the Romanian Carpathians to investigate this connection (Longman et al, 2017b;Panait et al, 2019) in our studied region (Fig. 5).…”

Section: Comparison With Other Potential Driving Forcesmentioning

confidence: 99%

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Carbon accumulation rates of Holocene peatlands in central-eastern Europe document the driving role of human impact for the past 4000 years

Longman

Vereș

Haliuc

et al. 2021

Preprint

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Abstract. Peatlands are one of the largest terrestrial carbon sinks on the planet, yet little is known about carbon accumulation rates (CARs) of mountainous examples. The long-term variability in the size of the associated carbon sink and its drivers remain largely unconstrained, especially when long-term anthropogenic impact is also considered. Here we present a composite CAR record of nine peatlands from central-eastern Europe (Romania and Serbia) detailing variability in rates of carbon accumulation across the Holocene. We show examples of extremely high long-term rates of carbon accumulation (LORCA > 120 g C m−2 yr−1), indicating that at times, mountain peatlands constitute an efficient regional carbon sink. By comparing our data to modelled palaeoclimatic indices and to measures of anthropogenic impact we disentangle the drivers of peat carbon accumulation in the area. Variability in early and mid-Holocene CARs is linked to hydroclimatic controls, with high CARs occurring during the early Holocene and lower CARs associated with the transition to cooler and moister mid-Holocene conditions. By contrast, after 4000 years (calibrated) before present (yr BP) the trends in CARs indicate a divergence from hydroclimate proxies, indicating that other processes became the dominant drivers of peat CARs. We suggest that enhanced erosion following tree cover reduction as well as enhanced rates of long-distance atmospheric dust fallout might have played a role as both processes would result in enhanced mineral and nutrient supply to bog surfaces, stimulating peat land productivity. Surprisingly though, for the last 1000 years, reconstructed temperature is significantly correlated with CARs, with rising temperatures linked to higher CARs. We suggest under future climate conditions, predicted to be warmer in the region, peat growth may expand, but that this is entirely dependent upon the scale of human impact directly affecting the sensitive hydrological budget of these peatlands.

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Section: Comparison With Other Potential Driving Forcessupporting

confidence: 67%