The Importance of Eolian Input on Lake-Sediment Geochemical Composition in the Dry Proglacial Landscape of Western Greenland

Rydberg, Johan; Lindborg, Tobias; Sohlenius, Gustav; Reuss, Nina; Olsen, Jesper; Laudon, Hjalmar

doi:10.1657/aaar0015-009

Cited by 16 publications

(16 citation statements)

References 63 publications

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“…Soils in the TBL catchment are dominated by till and glaciofluvial deposits, which to a large extent are overlain by a 0.3-0.4 m thick layer of eolian silt to fine sand (Rydberg et al, 2016;Petrone et al, 2016). With the exception of areas with exposed bedrock or till, most of the catchment has a sparse but continuous vegetation cover.…”

Section: Site Descriptionmentioning

confidence: 99%

“…Two of the transects are located in the wetter areas with peaty silt (transect 2 and 3), while the third transect (transect 1) is located in a drier area with eolian silt and fine sand ( Fig. 4c; see also Rydberg et al, 2016). The lysimeters (10 cm long, 2 cm in diameter, with an attached hose) were made of porous PTFE mixed with silica flour (pore size of 1 µm) similar to Petrone et al (2007).…”

Section: Lysimetersmentioning

confidence: 99%

“…By comparing the carbon contents in acid-treated samples with those in samples not treated with acid, Rydberg et al (2016) concluded that inorganic carbon contents in the sediments of TBL are negligible, implying that total carbon in the sediment equals total organic carbon. LOI samples were first dried at 105 • C to constant weight, then burnt in a muffle furnace at 550 • C for 4 h and reweighed.…”

Section: Organic Materials and Nutrients In Solid Samplesmentioning

confidence: 99%

“…There are several studies investigating different aspects of Arctic ecosystems, in West Greenland (e.g., Anderson et al, 2008;Ryves et al, 2009;Sobek et al, 2014;Jessen et al, 2014;Whiteford et al, 2016) and elsewhere (e.g., Chapin et al, 1995: Rysgaard andGlud, 2007;Smol and Douglas, 2007;Tarnocai et al, 2009;Rydberg et al, 2010;Palmtag et al, 2015;Hindshaw et al, 2016: Lundin et al, 2016. These studies provided crucial insights of high-latitude ecosystems that have increased our understanding of the significance and sensitivity of periglacial landscapes.…”

Section: Introductionmentioning

confidence: 99%

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Biogeochemical data from terrestrial and aquatic ecosystems in a periglacial catchment, West Greenland

Lindborg

Rydberg

Tröjbom

et al. 2016

Earth Syst. Sci. Data

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Abstract. Global warming is expected to be most pronounced in the Arctic where permafrost thaw and release of old carbon may provide an important feedback mechanism to the climate system. To better understand and predict climate effects and feedbacks on the cycling of elements within and between ecosystems in northern latitude landscapes, a thorough understanding of the processes related to transport and cycling of elements is required. A fundamental requirement to reach a better process understanding is to have access to high-quality empirical data on chemical concentrations and biotic properties for a wide range of ecosystem domains and functional units (abiotic and biotic pools). The aim of this study is therefore to make one of the most extensive field data sets from a periglacial catchment readily available that can be used both to describe present-day periglacial processes and to improve predictions of the future. Here we present the sampling and analytical methods, field and laboratory equipment and the resulting biogeochemical data from a state-of-the-art whole-ecosystem investigation of the terrestrial and aquatic parts of a lake catchment in the Kangerlussuaq region, West Greenland. This data set allows for the calculation of whole-ecosystem mass balance budgets for a long list of elements, including carbon, nutrients and major and trace metals. The data set is freely available and can be downloaded from PANGAEA:

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Section: Site Descriptionmentioning

confidence: 99%

Section: Lysimetersmentioning

confidence: 99%

Section: Organic Materials and Nutrients In Solid Samplesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Biogeochemical data from terrestrial and aquatic ecosystems in a periglacial catchment, West Greenland

Lindborg

Rydberg

Tröjbom

et al. 2016

Earth Syst. Sci. Data

Self Cite

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show abstract

“…A model describing the spatial distribution of soil depth and active layer thickness was developed by Petrone et al (2016). Soils in the TBL catchment are dominated by till and glaciofluvial deposits, which to a large extent are overlain by a 0.3-0.4 m thick layer of eolian silt to fine sand (Rydberg et al, 2016;Petrone et al, 2016). With the 10 exception of areas with exposed bedrock or till, most of the catchment has a sparse but continuous vegetation cover.…”

mentioning

confidence: 99%

Biogeochemical data from terrestrial and aquatic ecosystems in a periglacial catchment, West Greenland

Lindborg¹,

Rydberg²,

Tröjbom³

et al. 2016

Preprint

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Abstract. Global warming is expected to be most pronounced in the Arctic where permafrost thaw and release of old carbon may provide an important feedback mechanism to the climate system. To better understand and predict climate effects and feedbacks on the cycling of elements within and between ecosystems in northern latitude landscapes, a thorough understanding of the processes related to transport and cycling of elements is required. A fundamental requirement to reach a better process understanding is to have access to high quality empirical data on chemical concentrations and biotic properties for a wide range of ecosystem domains and functional units (abiotic and biotic pools). The aim of this study is therefore to make one of the most extensive field data sets from a periglacial catchment readily available that can be used both to describe present day periglacial processes and to improve predictions of the future. Here we present the sampling and analytical methods, field and laboratory equipment and the resulting biogeochemical data from a state-of-the-art whole-ecosystem investigation of the terrestrial and aquatic parts of a lake catchment in the Kangerlussuaq region, West Greenland. This dataset allows for the calculation of whole-ecosystem mass balance budgets for long list of elements, including carbon, nutrients as well as major and trace metals. The dataset is freely available and can be downloaded from PANGAEA: https://doi.pangaea.de/10.1594/PANGAEA.860961

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Annual and seasonal variability in high latitude dust deposition, West Greenland

Soest

Bullard

Prater

et al. 2022

Earth Surf Processes Landf

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High latitude regions (≥ 50 N and ≥ 40 S) are thought to contribute substantially to contemporary global dust emissions which can influence biogeochemical cycling as well as geomorphic, cryospheric and atmospheric processes. However, there are few measurements of the emission or deposition of dust derived from these areas that extend beyond a single event or season. This article reports the deposition of locally-derived dust to an ice-free area of West Greenland over 2 years from 23 traps distributed across five sampling sites. Local dust sources include glacial outwash plains, glacially-derived delta deposits and the reworking of loessic soils. Annual dust deposition is estimated at 37.3 to 93.9 g m À2 for 2017-2018 and 9.74 to 28.4 g m À2 in 2018-2019. This annual variation is driven by high deposition rates observed in spring 2017 of 0.48 g m À2 d À1 compared to the range of 0.03 to 0.07 g m À2 d À1 during the rest of the monitoring period. The high deposition rates in spring 2017 were due to warmer than average conditions and high meltwater sediment supply that delivered large quantities of sediment to local outwash plains in 2016. For other seasons, dust deposition was lower over both autumn-winter periods (0.03 g m À2 d À1 ) than during the spring and summer (0.04-0.07 g m À2 d À1 ). When sediment availability is limited, dust deposition increases with increasing temperature and wind speed.Secondary data from dust-related weather type/observation codes and visibility records were found to be inconsistent with measured dust deposition during the period of study. One possible reason for this is the complex nature of the terrain between the observation and sample sites. The dust deposition rates measured here and the infidelity of the observed dust with secondary data sources reveal the importance of direct quantification of dust processes to accurately constrain the dust cycle at high latitudes.

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The Importance of Eolian Input on Lake-Sediment Geochemical Composition in the Dry Proglacial Landscape of Western Greenland

Cited by 16 publications

References 63 publications

Biogeochemical data from terrestrial and aquatic ecosystems in a periglacial catchment, West Greenland

Biogeochemical data from terrestrial and aquatic ecosystems in a periglacial catchment, West Greenland

Biogeochemical data from terrestrial and aquatic ecosystems in a periglacial catchment, West Greenland

Annual and seasonal variability in high latitude dust deposition, West Greenland

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