The response of flood-plain ecosystems to the Late Glacial and Early Holocene hydrological changes: A case study from a small Central European river valley

Pawłowski, Dominik; Borówka, Ryszard K.; Kowalewski, Grzegorz; Luoto, Tomi P.; Milecka, Krystyna; Nevalainen, Liisa; Okupny, Daniel; Płóciennik, Mateusz; Woszczyk, Michał; Tomkowiak, Julita; Zieliński, Tomasz

doi:10.1016/j.catena.2016.07.034

Cited by 27 publications

(37 citation statements)

References 63 publications

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“…Their presence in such shallow sites could lead to overestimations in temperature, as their high frequency is presumably related to nonclimatic limnological factors (such as macrophyte density and low pH); however, these changes may also result from climate-related variables (such as T July ). Similar situations have been observed in the Cladocera-inferred water depth models (Luoto et al 2011;Nevalainen 2011;Pawłowski et al 2016a) as "edge effects". Such effects suggest that the Cladocera-based inference model can most reliably quantify past water level changes at intermediate depths relative to the training set depth gradient (because they lead to overestimation at shallow sites and an underestimation at deeper sites).…”

Section: Reliability Of the Cladoceran-based Temperature Reconstructionsupporting

confidence: 77%

“…Geologically, these river valleys are mostly filled with Late Glacial deposits and Holocene alluvium. The Saalian till is present on surrounding plains; locally it is overlain by glaciofluvial sands, and gravels surround the valley reaches (Forysiak 2012;Pawłowski et al 2016a).…”

Section: Study Areamentioning

confidence: 99%

“…The third possible explanation for the higher T July estimate at Koźmin and Grabica is connected with fact that these sites were very shallow pools during the YD. Water level changes seem to be a very important factor affecting the cladoceran community (Pawłowski et al 2016a). In extremely shallow water, the inferred values and residuals in the Cladocera-based calibration set most likely cause an overestimation of temperature.…”

Section: Reliability Of the Cladoceran-based Temperature Reconstructionmentioning

confidence: 99%

“…Studies of cladoceran-inferred paleotemperature in the YD and Early Holocene valley mires of central Poland have already begun (Pawłowski et al 2015a(Pawłowski et al , 2016a. Although a few studies have used cladoceran-inferred paleotemperatures in the Late Glacial and Holocene, there have been no comparisons of Cladocera reconstructions in different geological and geomorphological situations in a region.…”

Section: Introductionmentioning

confidence: 99%

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The usefulness of subfossil Cladocera remains in Younger Dryas climatic reconstructions in central Poland

Pawłowski

2017

Acta Geologica Polonica

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ABSTRACT:Pawłowski, D. 2017. The usefulness of subfossil Cladocera remains in Younger Dryas climatic reconstructions in central Poland. Acta Geologica Polonica, 67 (4), 567-584. Warszawa.Cladoceran-based paleotemperature estimates for the Younger Dryas for ten sections of paleo-oxbow lakes, valley mires, and lacustrine sediments from central Poland are presented, and their potential usefulness to climatostratigraphy is described. Most of the changes observed in the cladoceran assemblages are responses to climate changes. The cladoceran-based temperature reconstructions reflect cold conditions during the Younger Dryas (YD) and allow a division of this period into two phases: an older colder phase, between 12,800 and 12,000 cal yrs BP, and a younger, warmer phase, between ca. 12,000 and 11,500 cal yrs BP. The geomorphological features of the study sites and local environmental forces are also taken into consideration. The cladoceran-inferred summer temperature estimates from all of the study sites correspond closely with the available climate reconstruction for the YD in central Europe.

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Section: Reliability Of the Cladoceran-based Temperature Reconstructionsupporting

confidence: 77%

Section: Study Areamentioning

confidence: 99%

Section: Reliability Of the Cladoceran-based Temperature Reconstructionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The usefulness of subfossil Cladocera remains in Younger Dryas climatic reconstructions in central Poland

Pawłowski

2017

Acta Geologica Polonica

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“…In downcore sites located in southern Finland, temperatures of the warm climate events, such as the recent warming, Medieval Climate Anomaly and Holocene Thermal Maximum, may have been underestimated due to lack of equally warm calibration sites (Rantala et al 2016, Shala et al 2017. Similarly, the lack of warm calibration sites in the available chironomid-based temperature inference models have thus far caused problems in downcore studies of Polish sites due to deficiency of warm analogues (Pawłowski et al 2015(Pawłowski et al , 2016a. Here, we combine the Finnish calibration sets (Luoto 2009) with a dataset collected from Poland (previously unpublished) to create a more applicable temperature inference model for East European sites than has previously been available.…”

Section: Introductionmentioning

confidence: 99%

East European chironomid-based calibration model for past summer temperature reconstructions

Luoto¹,

Kotrys

Płóciennik

2019

Clim. Res.

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Understanding local patterns and large scale processes in past climate necessitates detailed network of temperature reconstructions. In this study, a merged temperature inference model using fossil chironomid (Diptera: Chironomidae) datasets from Finland and Poland was constructed to fill the lack of an applicable training set for East European sites. The developed weighted averaging-partial least squares (WA-PLS) inference model showed favorable performance statistics suggesting that the model can be useful for downcore reconstructions. The combined calibration model includes 212 sites, 142 taxa and a temperature gradient of 11.3-20.1 °C. The 2component WA-PLS model has a cross-validated coefficient of determination of 0.88 and a root mean squared prediction error of 0.88 °C. We tested the new East European temperature transfer function in chironomid stratigraphies from a Finnish high-resolution short-core sediment record and a Polish paleolake (Żabieniec) covering the past ~20,000 yr. In the Finnish site, the chironomidinferred temperatures correlated closely with the observed instrumental temperatures showing improved accuracy compared to estimates by the original Finnish calibration model. In addition, the long-core reconstruction from the Polish site showed logical results in its general trends compared to existing knowledge on the past regional climate trends, however, with distinct differences when compared with hemispheric climate oscillations. Hence, based on these findings, the new temperature model will enable more detailed examination of long-term temperature variability in Eastern Europe, and consequently reliable identification of local and regional climate variability of the past.

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Origin and post‐glacial evolution of surface cracks: A case study from the area of the Last Glaciation, north‐eastern Poland

Karasiewicz,

Hrynowiecka,

Weckwerth

et al. 2023

Earth Surf Processes Landf

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The analysis of LiDAR‐based digital elevation models revealed the existence of groups of longitudinal fractures in the ground in northern Poland at the limit of the ice sheet's extent during its last maximum. Our research on the closed elongated depressions (CEDs) of the Jedwabno test field (Szuć site, north‐east Poland) focuses on explaining their origins and their post‐glacial history. This region was covered by an ice sheet and glacitectonically active during the Vistulian, and at least some surface fractures are possible witnesses to this activity. Using geomorphological mapping, sedimentological and geophysical research, we assumed it was related that the origin of these features here is associated with groundwater migration at the end of the Vistulian glaciation or later when groundwater flow intensified due to a rapid climate warming that caused permafrost to melt. The thawing of permafrost caused to transition from continuous permafrost to discontinuous, which in turn created groundwater flow that was probably responsible for the development of the surface cracks (fractures). Radiocarbon, palaeobiological (pollen, Cladocera) and geochemical studies allowed for an estimation of the formation time of these unique surface cracks in the Older Dryas. Prevailing conditions were also reconstructed for the later dynamic changes of the end of the Late Vistulian glaciation and in the Late Holocene until the Subatlantic Period (Megalayan stage). The surface cracks with steep slopes, despite their small area, are extraordinary sedimentation traps that have, in a special way, retained an almost complete record of the environmental and climate changes of the Late Glacial. There are sedimentological gaps in the Holocene, especially after the Preboreal (old part of the Greenlandian Stage), caused by changes in water levels, aeolian processes and human activity.

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The response of flood-plain ecosystems to the Late Glacial and Early Holocene hydrological changes: A case study from a small Central European river valley

Cited by 27 publications

References 63 publications

The usefulness of subfossil Cladocera remains in Younger Dryas climatic reconstructions in central Poland

The usefulness of subfossil Cladocera remains in Younger Dryas climatic reconstructions in central Poland

East European chironomid-based calibration model for past summer temperature reconstructions

Origin and post‐glacial evolution of surface cracks: A case study from the area of the Last Glaciation, north‐eastern Poland

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