Evaluation of the rate of wood degradation at the Iron Age archaeological site of Biskupin,Poland

A study was made of the degradation of archaeological Scots pine (Pinus sylvestris L.) at the Iron Age archaeological site of Biskupin, Poland. Wood degradation was evaluated after 10 years of deposition of samples in different burial conditions (mineral soil, peat and water) and at different depths (25, 50 and 100 cm) at the location of the original archaeological wood from the Lusatian culture settlement. Changes in the wood samples were assessed on the basis of selected physical (maximum water content, basic density and porosity) and chemical (chemical composition, structure of cellulose and lignin) properties. The observed degradative changes were different for samples deposited in different locations of the archaeological site and at different depths. They relate mainly to carbohydrates—both cellulose and hemicelluloses—although the structure of lignin also underwent changes. The experiment using wood that had been degraded to a similar degree to the Biskupin wood enabled identification of the actual danger of degradation of the latter. It was found that the remains of the wooden structure of the Biskupin settlement are degrading, despite the favourable physicochemical conditions prevailing at the site, and it is necessary to take measures to prevent its further decomposition.     

The Environmental History of the Holocaust

ABSTRACT

The introduction conceptualizes environmental history of the Holocaust as a subdiscipline of Holocaust studies. The authors approach this emerging field of research through the context of environmental humanities with its current interest in the Anthropocene, soil science, forensics, multispecies collectives, and explorations of relations between ecocides and genocides. Proposed approach considers post-Holocaust spaces and landscapes as specific ecosystems and examines relations between its actors (human and non-human) in order to show the Holocaust’s spatial markers and long-terms effects. The article outlines existing literature on the subject, identifies the central research problems and questions, and discusses sources and methods. The authors demonstrate that the environmental history of the Holocaust applies a hybrid methodology that uses methods from various disciplines with the aim of creating new theories and interpretive categories and thus should be considered complementary to existing approaches in Holocaust studies. The authors follow the methodological principles of grounded theory in generating new concepts and seeking multidisciplinary methods for explaining nature’s role in the Holocaust and how Holocaust has changed nature. The authors claim that environmental history of the Holocaust broadens Holocaust studies as a field of research and opens up new questions concerning relations between nature and extermination in order to provide a more holistic perspective for exploring the relationship between culture and nature, genocide and ecocide. The approach proposed here shows Holocaust and post-Holocaust landscapes in terms of ecological/natural heritage, which might influence the way these spaces are commemorated, conserved and preserved, as well as used for tourist purposes.     

Landscape Sacralisation in Post-communist Poland

Landscape sacralisation is the process of filling the cultural landscape with religious phenomena and giving it a sacred character with elements of ritualised devotion. This paper examines this process in Poland during and since the communist era (1945–1989), and with a particular emphasis on late communist and post-communist times (1980–2013). It is argued that faith, politics, economy and religious ‘traditions of place’ are the most important factors shaping landscape sacralisation in Poland, particularly since 1980. Three types of landscape sacralisation are identified – architectural, linguistic and seasonal – and this paper discusses recent trends in these processes of landscape sacralisation with respect to their prevailing religious and non-religious dimensions. In recent decades, the Polish landscape has been filled with diverse religious objects and forms (churches, crosses, monuments, public processions, annual festivals and rural and urban nomenclature) associated chiefly with the Roman Catholic Church, the dominant denomination in the country. It is argued that scholarly appreciation of landscape sacralisation is a vital means of identifying the religiosity of Polish people during and since the communist era.     

Impact of property rights and ownership on the development of Warsaw’s contemporary city centre

The paper raises the problem of the impact of unregulated property and ownership rights on the development of the city centre. It applies to Warsaw as a post-socialist city that has recorded fast economic growth since the country’s communist regime collapsed in 1989. We follow the course of changes in the city centre of Warsaw, in particular, those pertaining to land use and high-rise buildings for office use as investments that encounter difficulties under the unregulated status of construction sites and lack of clear regulations for private property restitution that was nationalized under socialism. To describe and explain the difficulties, we provide data showing the location of large companies and office buildings, and examples of conflicts as well. Unregulated ownership issues and property rights weigh on Warsaw’s city centre, now vastly dispersing and gravitating westwards, and prevent the district from rational and effective development.     

Record of the meso- and neoholocene palaeoenvironmental changes in the Jesionowa landslide peat bog (Beskid Sądecki MTS. Polish Outer Carpathians)

The paper presents an analysis of depositional sequences of landslide peat bog situated in the depressions developed within the landslide landforms Jesionowa in the Beskid Sądecki Mts. (Outer Carpathians). The peat bog, with depositional sequence 2.80 m long, started to form at the beginning of the Atlantic Phase ca. 6390–5910 cal BC. Palynological and lithological analyses as well as several (14) radiocarbon age determinations of different horizons in the sediments enabled the reconstruction of palaeoenvironmental changes during the Meso-and Neoholocene. The increase in climate humidity at the beginning of the Subboreal and Subatlantic Phases was observed as delivery of minerogenic material to the peat bog basin and formation of a mineral horizon and an illuvial level within the peat. The particularly intensive delivery of allochthonous material to the peat bog took place at the beginning of the Subboreal Phase and was the result of both significant humid climate and increased human impact (colonization of the Funnel Beaker Culture) in the landslide area. Similar influence of younger colonisations of landslide area (Przeworsk Culture and, later, Valachian colonisation) was also recorded within the deposits of peat bog (illuvial and mineral horizons) in the early Subatlantic Phase. Rejuvenation of the landslide zone and formation of the younger landslide were connected with the increase in climate humidity at the beginning of the Subboreal Phase. The peat bog deposits situated within this younger landslide, which are ca. 1.8 m thick, are significantly contaminated with mineral material.     

Estimation of OSL trap parameters by optical “cleaning” — a critical study

The so-called thermal “cleaning” applied in thermoluminescence analysis allows distinguishing TL signal originating from different traps of comparable thermal depths. Here, the detailed study on the suitability of a similar approach — which can be called optical “cleaning” — for the analysis of OSL process has been carried out by means of computer modelling. The optical “cleaning” is realized by short optical stimulation applied directly after irradiation. It turns out that this approach does not help to separate signals related to various traps having similar optical cross-section (OCS) values. For some sets of trap parameters, sufficiently good reconstruction of the trap optical cross-sections can be achieved by the analysis of the conventional OSL curve obtained directly after sample irradiation, while the OSL curve analysis after “cleaning” does not provide any additional data. For other cases the analysis of both curves with and without “cleaning” leads to optical cross-section values different from those assumed in the model, but just in such situations the optical “cleaning” can be helpful. The differences between the OSL components of the conventional curve and the one obtained after “cleaning” can be used as indicators of an incompatibility of the trap parameters obtained from the OSL analysis with their actual values.     

Optical dating and sedimentary record from the terrace depositional profile of the Warta River (Central Poland)

Results of OSL dating and sedimentary studies from the profile of the low alluvial terrace of the middle Warta River are presented. The samples were dated using the single-aliquot regenera-tive method. Dating was used to establish a timing of the Weichselian Late Glacial events in the river valley environment. Stable conditions on the floodplain are expressed by the deposition of organic-rich series radiocarbon dated at 12 900-12 600 cal BP and 11 600-10 770 cal BP. Samples for OSL dating were collected from the mineral material deposited during the intensification of flood events during the Weichselian decline. The results obtained for the alluvia range from 12.78 ± 0.62 ka b2k to 14.33 ± 0.74 ka b2k. Sedimentological criteria allowed to distinguish between particular flood events. Overestimation of OSL ages is probably a result of rapidity of environmental changes in that time.     

Progress in the holocene chrono-climatostratigraphy of Polish territory

The Holocene delivers a unique possibility to establish climatic stratigraphic boundaries based on detailed chronostratigraphy reflected in various facies of continental sediments, in their lithological parameters and organic remains. These sediments are dated by the ¹⁴C method in the case of organic remains, by counting annual laminations in lacustrine facies, and by dendrochronological method in the case of fluvial sediments. The existence of well dated profiles enables to reconstruct various climatic parameters like amplitudes of seasonal temperatures, types and frequency of extreme rainfalls and floods and, finally, to distinguish rare rapid changes and most frequent gradual ones. This reconstruction is based on the analogous effects of various types of present-day rainfalls. The current authors present a critical review of existing chronostratigraphic divisions starting from simple millennial division by Mangerud based on Scandinavian palynological stratigraphy of peat-bogs and Starkel’s concept based on fluctuations in rainfall and runoff regime reflected in fluvial and other facies of continental deposits. In the last decades, the calibration of ¹⁴C dates allowed a new approach to be used for the construction of the probability distribution function of these dates in various facies or types of sediments, which formed a background for distinguishing and correlating climatic phases and defining boundaries between them. These approaches have been creating new opportunities for revision of the existing chronostratigraphy. The aim of this paper is to present a revised version of chronostratigraphic division based on climatic fluctuations reflected in various facies of sediments on the territory of Poland and discuss their correlation with other European regions and global climatic changes.     

First results of metallographic analysis and absolute dating of iron finds from Nowe Brzesko,site 26, Proszowice District

This paper presents the results of analyses of metal artefacts discovered at a multiphase site in Nowe Brzesko, Małopolskie Voivodeship, Poland. Fieldwalking prospection led to the discovery of steely iron objects, ploughed out on the site among other numerous archeological finds. A prospecting sondage yielded more corroded metal artefacts, identified mainly as agricultural tools (e.g. sickles, scythes). These chronologically nondistinctive artefacts could be assigned to the third to fourth century AD using radiocarbon dating, complemented by metallurgical analysis. The results open up new research perspectives on the economy and society of the Przeworsk culture in the Late Roman period.