Muted multidecadal climate variability in central Europe during cold stadial periods

Sirocko, Frank; Martínez‐García, Alfredo; Mudelsee, Manfred; Albert, Johannes; Britzius, Sarah; Christl, Marcus; Diehl, Daniel; Diensberg, Benedikt; Friedrich, Ronny; Fuhrmann, Florian; Muscheler, Raimund; Hamann, Yvonne; Schneider, Ralph R; Schwibus, Klaus; Haug, Gerald H.

doi:10.1038/s41561-021-00786-1

Cited by 28 publications

(51 citation statements)

References 90 publications

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“…Regional climate signals, however, are difficult to compare between records, especially since 14 C dating for the early MIS3 is problematic. The annually continuous ELSA-20 C org (chlorins) record from Auel and Holzmaar is at the moment the only record in central Europe to cover both MIS3 and MIS2 and is in addition fully correlated with the Greenland GICC05 chronology 1 . Here, we use these continuous and undisturbed maar lake sediments to document the presence/absence of megafauna and its relation to climatic, environmental change, human hunting pressure and volcanism.…”

Section: Introductionmentioning

confidence: 95%

“…It has a total of more than 250 volcanic structures including 68 maar lakes (60 of which are infilled lakes), which makes it an ideal research field to study the relationships between climate, volcanism, vegetation, landscape and ecology. The sediment cores studied here were drilled by the ELSA-Project, which has systematically cored all accessible Eifel maar sites, lakes and infilled maar structures over the recent years 1 – 4 , see more information on all ELSA cores on the webseite www.ELSA-Project.de . We use cores from the Holocene maar lake of Holzmaar and the infilled Pleistocene maar lake of Auel, both of which have a similar landscape structure with riverine inflow from catchments of about 5 km length (Fig.…”

Section: Introductionmentioning

confidence: 99%

“…Sirocko et al 1 recently have presented the stratigraphy for those records – the ELSA-20 time series of C org (chlorins) 1 , reproduced in Figs. 4 , 5 , 6 , 7 .…”

Section: Introductionmentioning

confidence: 99%

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Thresholds for the presence of glacial megafauna in central Europe during the last 60,000 years

Sirocko

Albert

Britzius

et al. 2022

Sci Rep

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Lake sediment records from Holzmaar and the infilled maar of Auel (Eifel, Germany) are used to reconstruct landscape changes and megafauna abundances. Our data document a forested landscape from 60,000 to 48,000 yr b2k and a stepwise vegetation change towards a glacial desert after 26,000 yr b2k. The Eifel landscape was continuously inhabited from 48,000 to 9000 yr b2k by large mammals, documented by the presence of spores of coprophilous fungi from Sordaria and Sporormiella fungi that grow on fecal remains of the megafauna. Megafauna reached higher numbers during cold stadial climates but was present also during the warmer interstadials. Highest abundance was at 56,500/48,500/38,500/33,000/27,000/21,000/16,200/14,000 yr b2k, i.e. under different climate regimes. Some of these dates were associated with clear human presence, which indicates that megafauna was not overkilled by humans. In contrast, human presence could quite likely have been stimulated by the abundant food supply. Megafauna presence decreased significantly when tree abundance increased during interstadials. The Megafauna disappeared finally at 11,400 yr b2k with the development of the early Holocene forest cover, which appears to be the most important threshold for megafauna presence.

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Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

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Thresholds for the presence of glacial megafauna in central Europe during the last 60,000 years

Sirocko

Albert

Britzius

et al. 2022

Sci Rep

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“…Most recently, it was demonstrated that in maar lakes from the Eifel region of Germany, the RABD 660;670 index measured by a Spectrolino device could successfully track paleoproductivity back to 60,000 years, showing how rapid temperature changes in the North Atlantic/Greenland domain (i.e., Dansgaard–Oeschger cycles) impacted lake productivity in continental Europe [ 39 ].…”

Section: Development Of the Hyperspectral Imaging Core-scanning Techn...mentioning

confidence: 99%

“…Maximal absorbance typically occurs between 660–675 nm, depending on the portions of chlorophyll a and b and various derivatives (e.g., pheophytin a , pheophorbide a ), as well as the spectral properties of the sediment matrix. RABD 670 (or similar) has been widely used as an index of green pigments and as a proxy for aquatic productivity in a wide variety of environments, including marine [ 9 , 23 ] and lake sediments [ 27 , 36 , 37 , 39 , 63 , 64 ], and over timespans greater than 100,000 years [ 65 ]. A modified version of the RABD Formula (2) flexibly utilizes the wavelength associated with maximal absorbance, which is preferable for reconstructions of total algal production [ 14 , 53 , 66 ]:

where R λ is the reflectance at the wavelength (λ), R 655–680min is the trough minimum (i.e., lowest reflectance value measured between 655 and 680 nm), X is the number of spectral bands between R 730 and the trough minimum, and Y is the number of spectral bands between the trough minimum and R 590 .…”

Section: Biogeochemical Interpretation Of Sediment Reflectance Spectramentioning

confidence: 99%

Scanning Hyperspectral Imaging for In Situ Biogeochemical Analysis of Lake Sediment Cores: Review of Recent Developments

2022

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Hyperspectral imaging (HSI) in situ core scanning has emerged as a valuable and novel tool for rapid and non-destructive biogeochemical analysis of lake sediment cores. Variations in sediment composition can be assessed directly from fresh sediment surfaces at ultra-high-resolution (40–300 μm measurement resolution) based on spectral profiles of light reflected from sediments in visible, near infrared, and short-wave infrared wavelengths (400–2500 nm). Here, we review recent methodological developments in this new and growing field of research, as well as applications of this technique for paleoclimate and paleoenvironmental studies. Hyperspectral imaging of sediment cores has been demonstrated to effectively track variations in sedimentary pigments, organic matter, grain size, minerogenic components, and other sedimentary features. These biogeochemical variables record information about past climatic conditions, paleoproductivity, past hypolimnetic anoxia, aeolian input, volcanic eruptions, earthquake and flood frequencies, and other variables of environmental relevance. HSI has been applied to study seasonal and inter-annual environmental variability as recorded in individual varves (annually laminated sediments) or to study sedimentary records covering long glacial–interglacial time-scales (>10,000 years).

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Stratigraphy and dating of Middle Pleistocene sediments from Rodderberg, Germany

Zolitschka,

Preusser,

Zhang

et al. 2024

J Quaternary Science

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The stratigraphy and dating of lacustrine sediments and loess derivatives from Rodderberg, a crater of the East Eifel Volcanic Field in Germany, is based on luminescence dating and incorporates radiocarbon ages, fingerprinting of key tephra layers of the East Eifel Volcanic Field (Rieden Tephra, Hüttenberg Tephra, Laacher See Tephra), pollen stratigraphy, varve counting data, and a correlative age–depth model. These methods yield a robust age–depth model for the last 258 ka. Beyond this, luminescence ages differ from tephra‐derived ages. In light of the apparent presence of the Rieden Tephra, the lowermost interglacial is assigned to Marine Isotope Stage (MIS) 11 or 420 ka. This provides a high‐resolution record of environmental conditions representing an analogue for the Holocene, characterized by a warming planet. However, new luminescence ages may indicate a younger age for basal sediments, with the lowermost interglacial representing MIS 9. Both age–depth models constrain regional environmental changes during the Middle Pleistocene controlled by global climate variations. For the hydrologically closed nature of the Rodderberg crater, with limited pathways for sediment inflow and erosional export, these results shed new light on the continuity of long Middle Pleistocene records.

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Muted multidecadal climate variability in central Europe during cold stadial periods

Cited by 28 publications

References 90 publications

Thresholds for the presence of glacial megafauna in central Europe during the last 60,000 years

Thresholds for the presence of glacial megafauna in central Europe during the last 60,000 years

Scanning Hyperspectral Imaging for In Situ Biogeochemical Analysis of Lake Sediment Cores: Review of Recent Developments

Stratigraphy and dating of Middle Pleistocene sediments from Rodderberg, Germany

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