301 Documenta Praehistorica XLIII (2016) Tools tell tales – climate trends changing threads in the prehistoric Pannonian Plain Ana Grabund/ija 1, Emmanuele Russo2 1 Institut für Prähistorische Archäologie, Freie Universität Berlin, Berlin, DE ana.grabundzija@fu-berlin.de 2 Institut für Meteorologie, Freie Universität Berlin, Berlin, DE emmanuele.russo@met.fu-berlin.de Introduction Reconstructing the resources Textile fibres can be roughly divided into two main categories, vegetal and animal. At least according to the textile evidence from both Europe (Barber 1991; Rast-Eicher 2005; Médard 2006; 2012) and the Near East (Schick 1988; Alfaro 2002; Burnham 1964; Helbaek 1963) flax (Linum usitatissimum L.) and tree basts were the most frequent sources of textile fibre during the Neolithic period. Although most of the direct findings suggest that the early raw mate- rials used in textile production were mainly of vege- tal origin, their preponderance should be considered with caution. Despite the fact that animal fibres are made of protein and therefore are more resistant to decay than vegetal ones, which are composed of cel- lulose, one should keep in mind that linen preserves better in alkaline conditions, while animal fibres such as wool require acidic environments for preserva- tion (Cybulska, Maik 2007). The fact that they are not found in the contexts investigated might not ac- count for a genuine absence, but rather for the fact that the conditions for preservation were not met. From the plant The wetland settlements of the Alpine region facili- tated the investigation of fibre from the flax plant (Linum usitatissimum) and its use in textile pro- duction, revealing details of both the plant’s devel- opment and its dynamics. However, since animal fibres cannot survive in the alkaline soils of circum- Alpine dwellings, the possibility of wool use in these rich contexts remains elusive. Flax has been defined ABSTRACT – This study of prehistoric textile production on the Pannonian Plain is based on indirect evidence dated to the period between the 5th and 2nd millennium BC; the study of technological trends and changes that occurred in manufacturing traditions concentrates on fibre processing and pro- duction. The functionality analysis of spindle-whorls served as a basis for comparing textile produc- tion trends with the results of the climate change model. Climatic changes in the area were simulat- ed by means of a moderate-resolution Global Circulation Model (GCM). The simulation covered the mid-to-late Holocene, from 7000 years BP to the pre-industrial period. IZVLE∞EK – Predstavljamo ∏tudijo izdelave tkanin v prazgodovini na obmo≠ju Panonske ni∫ine, ki temelji na posrednih dokazih, ki datirajo v ≠as 5. in 2. tiso≠letja pr. n. ∏t.; pri ∏tudiju tehnolo∏kih tren- dov in sprememb, ki so se zgodile v tradicijah izdelave tkanin, se osredoto≠amo predvsem na proce- siranje in izdelavo vlaken. Analiza funkcionalnosti predilnih vretenc nam je slu∫ila za osnovno pri- merjavo med proizvodnjo tkanin in rezultati modela klimatskih sprememb. Klimatske spremembe na tem obmo≠ju smo simulirali s pomo≠jo svetovnega modela cirkulacije (ang. GCM) pri srednji re- soluciji. Simulacija pokriva ≠as med srednjim in poznim holocenom, torej od 7000 let pred sedanjo- stjo do ≠asa pred industrijsko revolucijo. KEY WORDS – textile production; spindle-whorls; functional analysis; climate forcing; climate mod- elling DOI> 10.4312\dp.43.15 Ana Grabund/ija, Emmanuele Russo 302 as one of the ‘founder crops’ that started agriculture in the Near East (Zohary 1996). Its early and simul- taneous use for linen fibre production already in the 8th millennium BC has been attested by textile re- mains from Nahal Hemar cave in Israel (Schick 1988.31). In Central Europe, linseed specimens from the Jevi∏ovice site at Hundssteig (3100–3010 cal BC) in Lower (eastern) Austria were incidentally found within a row of loom weights (evidence of the old- est in situ weaving loom in Austria. Although there is certainly a long way to go between seed-bearing flax plants and the fibres woven on a loom, this co- incidence might well point to the use of flax in tex- tile production (Kohler-Schneider, Cannepele 2009. 67). The earliest surviving linen cords from the cir- cum-Alpine area of Europe attest to its use for tex- tiles in the 4th millennium (Barber 1991.11–15; Mé- dard 2012.386–9; Rast-Eicher 2005.118–20), al- though the earliest flax seeds in the same area pre- date the textile finds by almost two millennia. However, the importance of flax in Eneolithic con- texts within the investigated area of South East Eu- rope has also been well documented in more recent reports (Reed 2016). In several studies based on dif- ferences in linseed sizes, archaeobotanists have made an effort to clarify the dynamics and patterns of its exploitation (Maier, Schlichtherle 2011; Her- big, Maier 2011). Since it is possible to distinguish between domestic and wild flax seeds (Linum bien- ne), mainly on the basis of features such as seed size (Herbig, Maier 2011; Zohary et al. 2012.101), a si- milar methodological principle is used to distinguish between the two different varieties of domesticated flax. Ancient Near Eastern seeds have a length of approx. 4.0 to 4.7mm and a width of approx. 2.3 to 2.7mm, their size remaining unchanged from 5000 BC to 1800 BC (Helbæk 1959.109, Tab. 1). Interestingly, in Central Europe, flax seems to have split into two varieties at an early stage, one with the large seeds used for linseed oil, and another with smaller seeds specialised for making textile fibres. An extensive study of 4th and 3rd millennium wa- terlogged flax seeds from a series of wetland settle- ments in the Alpine region revealed that in the early phase (4000–3700 BC) seeds were significantly lar- ger in comparison to samples from the ensuing pe- riods (Herbig, Maier 2011.529). This difference in size cannot be correlated with natural or climatic va- riations and, according to the research, two flax va- rieties may be considered as possible proof of fibre specialisation. In the early phase, a flax type with larger seeds was cultivated for both oil and fibre pro- duction, similarly to the Near East (Maier, Schlicht- herle 2011.571). At the same time, already in the middle of the 4th millennium BC (around 3400–3300 BC) a small seed fibre type appeared, which was in- troduced and cultivated to fit the needs of textile pro- duction (Herbig, Maier 2011.529). The effects of osmotic stress on long fibre flax (Che- micosova 2006; Dash et al. 2014) and its preference for colder and wetter conditions could offer an expla- nation as to why this new fibre variety of improved length and quality became the primary resource in Europe. Indeed, a central European ‘flax-boom’ (Her- big, Maier 2011.531–532; Maier, Schlichtherle 2011. 571) occurred at the end of the 4th millennium BC, when textile production intensified. Spindle-whorls, spindles, loom weights, and finished fragments of netting and fabric allowed for the re- construction of textile techniques throughout the wetland settlements. Well-preserved layers like those at Arbon-Bleiche 3 and Pfyn-Breitenloo contain the remains of flax processing, which provided valuable information on its preparation and handling. There is sufficient evidence to show that certain villages focused on growing it and processing the fibres (Schlichtherle 2009). Furthermore, the spatial dis- tribution of textile tools within settlements points to the organisation and specialisation of textile work (Maier 2001; Lauzinger, Rast-Eicher 2011.539– 540). Archaeological and botanical evidence suggest that in addition to the division of labour, certain so- cioeconomic differences developed whereby goods and economic factors, including flax, were not avail- able to the same extent to all inhabitants (Schlicht- herle et al. 2010). To the animal Although the intensified use of animal fibres, name- ly wool, in textile production, was initially discussed in the context of Sherratt’s model (Sherratt 1981), new evidence for milk consumption (Evershed et al. 2008; Bartosiewicz 2007; Craig et al. 2005; Vigne, Helmer 2007) and animal traction (Fabi∏ 2005; Isa- akidou 2006; Johannsen 2005) does not support a big time lapse between the initial domestication, fo- cused mainly on meat consumption, and the later use of secondary animal products. No such arguments for the early use of wool have been established so far, since the first woollen textiles are exceptionally rare and appear only from the 4th millennium BC (Rast-Eicher 2014; Shishlina et al. 2003). Further- Tools tell tales – climate trends changing threads in the prehistoric Pannonian Plain 303 more, linguistic research suggests a common root for the word ‘wool’ in Indo-European languages, pointing out that the notion of its soft and spinnable characteristics appeared prior to its departure from west-central Asia around 4000 BC (Barber 1991; Chantraine 2009). Some attempts to place the beginnings of wool use earlier (Rooijakkers 2012) focus primarily on the Near East. New zooarchaeological investigations of sheep husbandry in Northern Mesopotamia (Vila, Helmer 2014) point to fleece exploitation shortly after initial domestication (around 6500 BC), sug- gesting that several breeds were involved in the selection process. Thus multi-origins and trade are considered important factors for the cross-breeding process. Although the first use of wool was suggested to be parenthetical in the context of fibre production and processing, at least as far as spinning is concerned, it does account for the early knowledge both of the resource and its properties. It is thus considered plausible that sheep fleece developed new desired properties gradually (Rast-Eicher, Bender Jørgen- sen 2013), as a cumulative result of animal selection, involving out-breeding and cross-breeding practices by shepherds. Already developed and established Mesopotamian wool economies in the 3rd millenni- um BC, known from the numerous cuneiform sour- ces (Charvát 2011) raise the argument that wool’s first appearance should be dated much earlier. An analysis of textile tools from Arslantepe (Lau- rito et al. 2014) proposed household wool spinning already in the 4th millennium BC, and ethnological research in Greece showed that unspecialised herd- ing can, and did, account for an ample amount of spun thread (Rokou 1994). In addition, both ‘Neo- lithic’ and ‘Bronze Age’ wool types occur in Iron Age contexts. Sheepskins and textiles from Hallstatt in Austria (dated to the 1st millennium BC) show a range of fleece qualities, with a selection of finer wool for weaving (Ryder 1990a; 1990b; 1992). This direct evidence confirms that the development from ‘hair’ to coarse wool and finally to fine wool in sheep was successive. Consequently, a definition of a sin- gle temporal horizon for the introduction of wool- ly sheep can be considered unconvincing (Halstead, Isaakidou 2011). Considering that multiple genes account for fleece development (Ryder 1982), Paul Halstead and Valasia Isaakidou proposed that the better fleece qualities might have been selected un- intentionally and on diverse occasions (Halstead, Isaakidou 2011. 67). Moreover, an important argument that additionally supports the idea of the multiple origin of the de- sired traits was a consequence of the dynamic gene flow – rather than of developed wool economies focused on increased production – is based on the fact that the better qualities of wool, regarding its finesse, are often found in places and periods re- mote from those interpreted as more specialised and established1. And ‘back to the roots’ The definite separation of farming and foraging has been fairly criticised, and it is plausible that both strategies were practiced simultaneously (Cum- mings, Harris 2011). The use of foraged plant fibres before, during and beyond the Neolithic is support- ed by the substantial amount of direct evidence at- testing to the common use of indigenous plants, in- cluding reeds, grasses and bast fibres from trees (Harris 2014). The best examples from the Panno- nian Plain region were found at the Ljubljansko Barje dwellings in Slovenia, with preserved fibres of the grass family (Poaceae) (Pajagi≠-Bregar et al. 2009) and leaf fibres of lesser bulrush (Typha an- gustifolia) (Greif 1997.41). Nonetheless, the result of the plant macro remains study of the late 4th mil- lennium Stare Gmajne lakeshore settlement at Ljub- ljansko barje, should be mentioned, since they re- vealed that, besides poppy (Papaver somniferum), flax was the highest represented oil plant, which could also have been used for its fibres (Tolar, Ve- lu∏≠ek 2009; Tolar et al. 2010). Fabienne Médard concluded that, overall, there are more preserved cords, threads and cloth made from tree bast fibres than those made from flax (Médard 2010.57). She noticed that tree bast fibres (predomi- nantly lime) were used mainly for twined cloth, 1 Commenting on Bronze Age wool quality, Michael Ryder compared contemporary Scandinavian and Egyptian produce: “The wool in North Europe was naturally brown, while that in Egypt was white. Surprisingly, however, the Egyptian wool was coarser. This theme of finer wool in more primitive areas, or in earlier periods, is repeated throughout subsequent history“ (Ryder 1974.110). Subsequently, this was explained by experts (Rast-Eicher, Bender Jørgensen 2013) as indeed a finer wool quality from ‘Nordic’ sheep (genetically different from central European and Near Eastern sheep breeds). The Bronze Age ‘Nordic’ type wool of superior fibre quality to that of contemporary Egyptian production thus provoked a revaluation of the ‘improvement through in- tensification’ principle. Ana Grabund/ija, Emmanuele Russo 304 whereas flax was used mainly for woven textiles. (Médard 2012.368). This led to the conclusion that most of the tree bast fibres from the Neolithic lake dwellings in Switzerland were spun without a spin- dle, a technique characteristic especially of spinning long vegetal fibres (Médard 2006.99–102). The use of both early wool and flax for textiles could be considered in this category. Collected wool tufts and wild flax fibres were probably competitive with the aforementioned plant resources, along with other materials, such as frequently disregarded goat hair (Frangipane et al. 2009). Wild flax fibres were identified in a series of Upper Paleolithic layers at Dzudzuana Cave in Georgia (Kvavadze et al. 2009), indicating that prehistoric hunter-gatherers were already using its fibre to make thread. There was certainly a substantial time lapse in sequential adap- tations of fibre use before it become a primary re- source for textile production. Finally, if considered in a wide-scale process that in- volved gradual modifications and a refinement of practices, it is extremely difficult to decide when and where these secondary products were first recog- nised and exploited. Although Hans Helbæk sug- gested that flax was initially used for its seeds and then for its fibre (Helbæk 1959.104; McCorriston 1997), linen evidence is direct proof of its early use for textiles. Preserved textiles confirm that flax was used for its fibre already in the Early Neolithic in the southern Levant (Schick 1988.31). Alternatively, the quality of early wool could have been controlled to a certain degree through fibre preparation. Sampling and manual sorting of fleeces and tufts could have resolved its hairiness and coar- seness, resulting in a selection of spinnable material. This selection practice has been demonstrated with an analysis of Bronze Age skins and textiles from Hal- lstatt (Rast-Eicher, Bender Jørgensen 2013), reveal- ing how a skilled wool-sorter could identify and ca- tegorise a range of wool qualities even with a flock of highly mixed sheep. Due to gradual specialisation and the secondary pro- duct character ascribed to these fibres, it is extre- mely difficult to investigate the origin of their use and dynamics of their development. On the other hand, following their importance and representation in textile production, it is to some degree possible to determine when, where and why they became a primary resource, as their intensified exploitation was more culturally and environmentally dependent. Theory and time Apart from investigating the biological origins and developments of both wool and flax fibres, social and technological changes connected to their inten- sified exploitation could be approached through cul- tural historical narratives and theoretical frame- works. The economies of prehistoric communities across the Pannonian Plain would alter with specia- lisation in either of the resources, transforming fibre material into a commercial good, possibly involved in export and exchange. Both strategies, if intensi- fied, would imply an increased anthropogenic fac- tor. Maintaining large herds calls for opening the primeval forest vegetation in parts of Europe, where forest cover is not limited by climatic factors. The high water and high-quality agricultural land requi- rements of flax suggest direct competition with food crops. Thus, the benefits of developing traditional technologies and production as sub-branches of the fragile and not fully formed economies of the period seem even more reasonable. The processual archaeology approach would argue that this next step was determined by a successful cultural adaptation to climatic and environmental conditions (Binford 1968), while the opposing post- processual approach would focus on explaining all changes in the past as a result of human agency (Hodder 1986). Regardless of the approach, the fact remains that developments of the technological as- pect were the main determinant of ‘success’. Andrew Sherratt assembled different strands of evi- dence from archaeology and zooarchaeology into a consolidated model of the Secondary Products Re- volution (Sherratt 1981). By suggesting that the main by-product of domesticates (traction, riding, milk and wool) occurred simultaneously, first in a narrow time span in the 4th millennium BC, he con- ceptualised them as economic achievements that de- veloped several millennia after primary, meat-focus- ed consumption. In this model, the main commod- ity, namely meat, was the objective of Neolithic her- ders, against the full range of exploitation, an achie- vement of the Eneolithic. Consequently, the model addressed the secondary products’ potential for cul- tural evolution and social complexity in the transi- tion from the 4th to the 3rd millennium BC. Inte- restingly, it is not the main postulate of the theory which is criticised, but the contemporaneous occur- rence or intensification of different types of exploi- tation (Vorsteen 1996; Halstead, Isaakidou 2011). One of the biggest supporters of Sherratt’s model, Haskel Greenfield, argued for a revision of the con- Tools tell tales – climate trends changing threads in the prehistoric Pannonian Plain 305 temporaneity of its parts (Greenfield 2005), under- lining the importance of intensification in scale, ra- ther than origin of use. The initial critique of the model contributed to further questions on causality: were these ‘innovations’ a cause or a consequence of social and economic developments, did they influ- ence each other, and finally, how? The economic importance of secondary products, even if known for a long time, as proved in the case of milk (Evershed et al. 2008; Bartosiewicz 2007; Craig et al. 2005; Vigne, Helmer 2007), increases during the 4th millennium BC, which further shaped our research objectives. The ‘competition of fibres’ found its place in the paradigm due to the contem- poraneity of the specialisation of both resources and the influence on economic factors that accompany their intensified use. The wide time frame of our investigation, which en- compasses two millennia, gave us the opportunity to pattern technological trends and changes on a large scale, rather than addressing culture-specific ques- tions and particular inter-site dynamics. The focus on 4th and 3rd millennium BC textile production in the Pannonian Plain placed the research within the context of three periods: the Middle Eneolithic, Late Eneolithic and Early Bronze Age. The transforma- tion from Middle to Late Eneolithic and from Late Eneolithic to Early Bronze Age societies in the Pan- nonian Plain from the final 5th to the ending of the 3rd millennium BC, and the role of local and exoge- nous influences, remain controversial. Further, all three periods are characterised by a number of part- ly overlapping ‘cultures’ whose definition is based primarily on pottery inventories and burial rites, so they do not necessarily represent social or econom- ic communities. The ‘Chronological framework for the Copper Age cultures of the Carpathian Basin and neighbouring territories’ outlined by Pál Raczky (1995.60, Fig. 1) was chosen as the basis for the pe- riodisation of investigated textile tool samples. The chronological division we used placed spindle- whorl samples from the 1st half of the 4th millen- nium BC in the Middle Eneolithic and samples from the 2nd half of the 4th and the very beginning of the 3rd millennium in the Late Eneolithic assemblage. Samples from the advanced 3rd millennium contexts thus entered the Early Bronze Age assemblage. The classification of the investigated cultural-historical groups within these three periods remains arbitrary, especially due to the transitional character2 of the particular ‘cultures’. Changing threads In the process of hand spinning, the spinner conti- nuously rotates the spindle and the spun yarn at- tached to it. As the tool rotates, the hands are used to draft the prepared fibres, while the weight of the tool pulls them, and its rotation twists them into a yarn. Tension and speed are the two main factors af- fecting the transformation from fibre to yarn. Smo- other and shorter fibres call for a shorter, lighter draft and more twist to enter the fibres fast enough, while on the other hand, coarser and longer fibres allow for longer and heavier down-pull and less twist without causing a break. As textile tools for fabricating yarn, spindle-whorls are the most commonly preserved evidence of fibre processing and production practices found in prehi- storic contexts. The same proved to be the case with the sites studied in regions of South East and East Central Europe. Fortunately, they are also the most efficacious of textile tools for studying the differ- ences of fibres. It has been widely accepted within the respective field of textile archaeology that the morphological features of the spindle-whorl relate to its functionality. A good number of reports from experimental archaeology have supported this de- pendency (Grömer 2005; Mårtensson et al. 2006; Verhecken 2010). Nevertheless, the real impact and conditioning of these determinants continue to be questioned and investigated (Kania 2015; Laurito et al. 2014). As mentioned above, both whorl size and weight account for the rotational properties, while deter- mining the tool’s moment of inertia. Perforation dia- meter and position are two other features that have a significant influence on rotation, later also accoun- 2 Despite its integration with the Boleráz group (Stadler et al. 2001.543) and mainly due to its transitional character (Horváth 2001. 83), typological fusion with Lasinja and Furchenstich (Horváth 2009.105), its stylistic affiliation with the ‘stab and drag’ or ‘Fur- chenstich’ decoration complex (Kalicz 2001) and absolute dates that cluster between 3700 and 3500 BC (Horváth 2009.104), the Proto- Boleráz sample recorded from the Abony site was placed within the Middle Eneolithic assemblage together with Lasinja and Furchenstich spindle-whorls. The Vu≠edol sample recorded from the Gomolava and Slav≠a-Nova Gradi∏ka sites was placed within the Early Bronze Age assemblage together with Somogyvár-Vinkovci spindle-whorls. Mainly because the big sample recorded from the Ljubljansko Barje-Ig site, which is only relatively dated (Koro∏ec, Koro∏ec 1969) to the 3rd millennium BC, did not permit finer classification according to the particular cultural-historically defined phases. Ana Grabund/ija, Emmanuele Russo 306 ting for the whorl’s stability during the process. Per- foration is to some extent indicative of the spindle on which the whorl was used, thus its dimensions and properties have to be considered, since they also influence rotation. In the context of the proposed functionality, the mo- ment of inertia and weight of the whorl are given the central role, mainly because they are connected with both the raw material (Verhecken 2010) and the properties of the spun thread (Bohnsack 1981; Crewe 1998). It is generally accepted that lighter weights would be preferred for thinner and lighter threads and heavier for thicker and heavier yarns (Andersson 2015.47). This quality standard is thus taken as the parameter which has the most influ- ence on the end products and their characteristics. The fact that the fibre flax plant would have pro- vided fairly long fibres, especially compared with the much shorter length of wool expected for the early woolly sheep, is the main reason this distinc- tion of raw materials resonated in the dichotomy be- tween spindle-whorl types, with an emphasised con- trast between big and heavy and small and light ca- tegories. Climate trends In recent decades, the media have taken a great in- terest in future climate change and its possible im- pact on society. Adaptation and mitigation policies have become main discussion topics in scientific re- search. Analyses of past events are often referred to for predictions of future developments, so archaeo- logical and historical data substantially contribute to our understanding of the effects of climate change and its influence on culture and society. Most im- portantly, the way civilisation reacted or adapted to different environmental conditions in the past could give us vital information on how to respond to the effects of renewed climate stress (Riede 2014). In order to interpret altering technologies by distin- ctions between fibres and their reliance on cultural and environmental contexts, our research analysed Eneolithic and Early Bronze Age textile tools in the light of the results of a climate simulation for the pe- riod of interest. This comparison of the two sets of data revealed that climate changes might have sig- nificantly influenced the observed dynamics of pro- duction traditions. Thus, our approach is a valuable interdisciplinary case study that incorporates bi-uni- vocal examples of the suitability of archaeological analysis, firstly, regarding its use as a comparison data frame for climate modelling results and, second- ly, for evaluating the effects of past climate change on culture, particularly innovation and technology. The results of climate model simulations are parti- cularly suitable for analysing cultural and technolo- gical dynamics, since they reveal trends which can explain certain continuities, as well as changes at a higher temporal resolution. This means they enable a wider understanding of the climate’s impact on pre- historic societies, since their coverage builds an en- vironmental context for the study of both adaptation processes and their consequences. Materials and methods Scope of the study In order to avoid the absence of contextual data and uncertainties regarding ‘cultural’ and chronological assignments, the choice and collection of material used in this research focused as much as possible on recent excavations, with the exception of several sites3. A textile tool database was created that com- prises spindle-whorls from over 20 archaeological sites4, which gave a presentable transect from the northern slopes of the Central Balkan Mountains in the south and the Danube River in the east to the foothills of the Carpathian Mountains and the South East Alps in the north and west (Fig. 1). The period of interest, beginning with the Middle Eneolithic (Lasinja spindle-whorl sample represent- ing the earliest tools) and ending with the Early Bronze Age (Somogyvár-Vinkovci spindle-whorl sam- ple representing the latest tools) falls roughly be- tween the middle of the 5th and the end of the 3rd millennium BC. Within the geographically defined region, changing environmental conditions were in- vestigated with the use of moderate-resolution cli- mate simulations. In the investigation of change and possible innovation in fibre production and pro- cessing, both climate information and the recorded archaeological evidence were considered, analysed, compared and finally discussed for possible corre- lations. 3 Ljubljansko Barje-Ig and Dobanovci were excavated during the 1880s and the 1960s, while Gomolava and Slav≠a-Nova Gradi∏ka are the only systematically excavated sites included in the study. 4 Kostolac: two sites (172 tools), Classical Baden: eleven sites (147 tools), Boleráz group: two sites (32 tools), Furchenstich complex: ten sites (205 tools), Lasinja: six sites (47 tools), Proto-Boleráz: one site (37 tools), Vu≠edol: two sites (38 tools), Somogyvár-Vin- kovci: four sites (17 tools), Late Vu≠edol/Somogyvár-Vinkovci: one site (141 tool). Tools tell tales – climate trends changing threads in the prehistoric Pannonian Plain 307 The results of the comparative analysis present the impact of dynamic climatic conditions on two chan- ges in textile production which influenced spinning technology: firstly, through the adaptation of the fibre material resources, and secondly, through the modification of final product demand. Both trends, occurring in the 4th and becoming more pronounced in the 3rd millennium BC, were mainly quantitati- vely observed and discussed as the adjustment of tools’ morphological, and thus functional features. Therefore, both their typological and functional va- riability were addressed. The recorded trends in tool assemblages presented in this paper can be attributed to more than two sug- gested factors that may be equally culturally and en- vironmentally promoted. Nonetheless, from the tech- nological point of view, they are the most frequent- ly discussed and considered in the framework of archaeological textile research as being the factors responsible for determining a tool’s functionality (Loughran-Delahunt 1996; Grömer 2005; Mårtens- son et al. 2006; Verhecken 2010). The approach pre- sented here draws attention to prehistoric textiles in the archaeological record, which enables a closer insight into manufacturing traditions and produc- tion technologies that can benefit our understand- ing of social and cultural realities and their changed economic strategies. Our main objectives were intended to: ❶ Explore and detect trends of change within the Pannonian Plain textile tool sample. ❷ Elucidate the chronological, cultural-historical and, to some extent, environmental context of these trends. ❸ Model and interpret the main climate change trends within the geographical and chronological range of the research. ❹ Correlate both sets of trends and consider their connection. ❺ Explore the idea of climate conditions within the spatio-temporal context of the textile production structures. Spindle-whorl analysis The metrical standards outlined above have to be considered cautiously, because the spinning process is influenced by a combination of many factors. In fact, recent extensive spinning experiments (Kania 2015) designed to shed more light on how fibre and yarn depend on the tool’s weight and moment of inertia revealed how both of these variables have little to no influence when compared to the human Fig. 1. The distribution of the sampled sites. Ana Grabund/ija, Emmanuele Russo 308 factor. In other words, a skilled spinner can spin a variety of fibres with a variety of spindle-whorl types and produce a proportional variety of differ- ent yarns. In addition, Karina Grömer’s experiments (Grömer 2005) showed that although very heavy suspended spindle-whorls (120–140g) were not suit- able for very fine yarns and light whorls (8–20g) were not efficient for thicker yarns, a medium weight (40g) would be suitable for almost every thickness documented in prehistoric Europe. Although the influence of the tool’s weight and its moment of inertia can to a certain degree be over- come by the spinner’s skill, the substantial differ- ence in tensile strength between the two fibres in- vestigated (fibre flax and early wool) should be dis- tinguishable, if not in the distribution of medium spindle-whorl types, then in the distribution of ex- tremely different tool categories. The functionality analysis was thus chosen as appropriate with regard to the big size of the considered sample and big dif- ference in tensile strengths of the raw materials in- vestigated. The sampling method accounts for the ro- bust patterning; its purpose was to reveal interpre- table trends in textile technologies within a broad chronological context. Although moderate spindle- whorl types are especially difficult to interpret, the significant difference between the distributions of extremely different tool types should be considered as an indication of substantial differences in spin- ning technologies. During the three-year study, 1152 spindle-whorls were recorded in a textile tools database. Initially, the study included tools from 34 archaeological sites, but subsequently the final analysis was conducted on a limited sample of 836 spindle-whorls5. Each in- vestigated cultural-historical group was documented at two or more sites, with the exception of the Proto- Boleráz group. Middle Eneolithic tools account for 34.6% (289), the Late Eneolithic for 42.0% (351) and Early Bronze Age for 23.4% (196) of the entire sam- ple of spindle-whorls. The recording protocol was based on four main measurements (whorl diameter, perforation diameter, height and weight) and by cal- culating weight/diameter and height/diameter ra- tios. The ranges and mean values for all the record- ed variables are given in the chart (Fig. 2). The analysis segment of this paper reports on 328 whorls which were completely preserved, 163 whorls preserved in half, 223 partially preserved whorls and 122 whorls that had small fragments (less than 10%) missing6. All spindle-whorls in the database were documented in order to provide three sepa- rate categories of information: contextual, morpho- logical and illustrative. Not all specimens provided equal amounts of information, and for the purpose of the functionality analysis a minimum criteria was applied: reliable chronological assignment, typolo- gical determination and the above-mentioned mea- surement standard. In order to investigate the change in the metrical features of the spindle-whorls, the tools were divid- ed into height-diameter and weight classes. This kind of typology served as a basis for their functio- nality analysis. The entire sample (836 spindle- whorls) was divided into three main weight types (light, medium, heavy) and height types (flat, high, and steep), according to the distribution of the spin- dle-whorl’s height-diameter ratio and weight values (Fig. 3). Additionally, due to the extremely high values, a fourth weight type was defined. The weight values 5 The sample standard was set at a minimum of three recorded spindle-whorls with complete metric data and chronological place- ment. Furthermore, the Neolithic spindle-whorl sample was not included in the study. No Early Eneolithic spindle-whorls were re- corded in the database, thus no continuity or change in textile production could be thoroughly investigated. Also, the climate si- mulations did not cover a substantial part of the period. 6 The weight values of the spindle-whorls in the sample were documented in four different reliability categories depending on their preservation status. The weights of complete samples were documented in the complete weights category; weights of almost com- plete samples with small fragments missing were documented in the estimated weights category (estimated weight ≈ weight if not complete); weights of samples preserved in half were documented in the calculated weight category (calculated weight = weight if not complete doubled), and finally, weights of partially preserved samples were documented in the reconstructed weight cate- gory (reconstructed weight = density x volume). Volume and density variables were provided from virtual (three-dimensional) models created for the partially preserved spindle-whorls. Fig. 2. Table showing ranges and mean values for all the recorded variables in millimetres and grams. Valid Number 836 Min. Max. Mean diameter 26.00 96.00 56.4011 height 5.00 77.60 25.5841 perforation diameter 3.50 17.00 7.9317 weight 6.39 317.70 68.3354 height-diameter ratio 0.10 1.32 0.4559 weight-diameter ratio 0.14 4.25 1.1400 Tools tell tales – climate trends changing threads in the prehistoric Pannonian Plain 309 of very heavy spindle-whorls are generally connect- ed to substantially long fibres and plying (Barber 1991.52; Hochberg 1979.21) heavier thick yarns or ropes (Vakirtzi 2014.53). Represented in 10% of the entire sample, spindle-whorls weighing above 140g were considered appropriate for the addition of the very heavy weight type, making this class as- sociable with very long, presumably plant fibres and plying (Fig. 4). As already mentioned, early wool was expected to have shorter fibre lengths, thus the 33g upper limit for light spindle-whorl category was considered rea- sonable (making this weight type associable with wool)7. Model simulations To our knowledge, the results of climate simulations have not been employed so far to investigate chan- ges in climatic conditions for a chosen region and determined period. The decision to adopt this par- ticular approach as support for our analysis was made for several reasons. Firstly, the model allows full coverage of the area investigated for the entire period in question. Furthermore, the temporal reso- lution of such analysis allows us to focus on differ- ent temporal scales, leading to the representation of inter-annual to millennial climate variability. But, most importantly, besides allowing the simulation of possible changes of different climatic parameters, the model also allows us to find plausible physical interpretations for them. Nonetheless, as support for the conclusions based on the model results, we ad- ditionally address several studies which rely on proxy reconstructions. A transient continuous climate simulation was per- formed with the coupled atmosphere-ocean circula- tion model ECHO-G, composed by the ECHAM4 (Roeckner et al. 1996) and the ocean model HOPE (Wolf et al. 1997), at a spectral resolution of T30 (_ 3:75o_3:75o). The model was driven by changes in the Earth’s orbital configuration calculated by An- dre Berger and M. Loutre (2002), changes in solar activity as reconstructed by Sami K. Solanki et alii (2004) and variations in GHGs concentrations de- duced from air trapped in ice cores (Flückiger et al. 2002). Further information on the simulation reali- sation is provided in Sebastian Wagner et alii (2007). The results of the aforementioned simula- tion have been used in different studies: within these Wagner et alii (2007) used the model results in order to investigate the Mid-Holocene hydrologi- cal climate in Southern Patagonia. Bijan Fallah et alii (2015), Jonas Berking et alii (2013) and Emannu- ele Russo et alii (2016) used the model’s outputs in order to run a time-slices experiment for different areas and periods of study. The region considered in our analysis extends from longitude 14W to 21W and from latitude 42N to 48N, covering most of the Pannonian Plain region from the southern borders of Serbia in the south to Northern Hungary in the south. The analysis covered the period between 7000 BP and 3000 BP, taking into consideration the different variables that were particularly relevant for plant growth, such as near surface temperature, humidity balance (i.e. precip- itation minus evaporation) and rising temperature N 836 height\diam. weight (mm) (g) (%) 10 0.20 22.00 20 0.23 FLAT 27.40 LIGHT 30 0.30 33.00 40 0.35 41.30 50 0.43 HIGH 56.00 MEDIUM 60 0.52 68.00 70 0.60 82.00 80 0.68 STEEP 104.40 HEAVY 90 0.80 140.00 (πVERY HEAVY) Fig. 3. Table of height-diameter ratios and weight classes with considered values. Fig. 4. Late Eneolithic spindle-whorl (from the Ko- stolac context) beside a Late Neolithic loom-weight from the Sopot context found at Slav≠a-Nova Gra- di∏ka, demonstrating the large size of the very heavy spindle-whorl type. 7 Compared to wool, plant fibres are more often considered to be spun with heavier weights Barber (Barber 1991.25). Very heavy whorls, respectively 100g and above, could be connected with full-length flax or long-staple wool of later specialised breeds, while this amount of tension is supported only by very long fibres. For spinning medium to heavy wool more moderate weights would be more adequate, at around 30g, respectively (Gleba 2008.103–106). Ana Grabund/ija, Emmanuele Russo 310 of days with above 5 degrees (Masson et al. 1999). Sea level pressure anomalies were also considered. Results Adapting technologies Regarding the robust period to period comparison, the observed differences in spindle-whorls’ weight and diameter distributions pointed to a significant increase through time in values for both variables. The lowest weight variability is obvious in the ear- liest (Middle Eneolithic) and the highest in the latest (Early Bronze Age) assemblage. Nevertheless, in the case of Early Bronze age tools, it is noticeable that the previously wide distribution of the Late Eneoli- thic values was limited to a noticeable degree in the frequency of the large diameter sizes (Fig. 5). A similar trend can be observed regarding the corre- lated height-diameter and weight categories. In the earliest, Middle Eneolithic assemblage, light and me- dium weight types are convincingly predominant, and appear to be clustered in only one height group: the lowest category or the flat spindle-whorl type. Almost the opposite distribution is evident in the latest, Early Bronze Age assemblage. Here, again, most of the tools cluster in one height group, but this time in the highest category of the steep spin- dle-whorl type. Although in this period all four weight groups appear to be more evenly distributed in this category, heavy and medium spindle-whorls are the most represented. The Late Eneolithic assem- blage seems to fit the transitional period between these two extremes. First, because it shows the in- crease in the amount of heavy weight types, a trend which displayed continuity in regard to the Early Bronze Age period. Second, because the category of medium weight spindle-whorls revealed the most balanced distribution across all three different height groups, with the highest frequency occurring in the moderate (high type) height group (Fig. 6). When analysed in the context of shape variability, the largest weights (heavy and very heavy spindle- whorl types) are mostly represented in the biconical and conical groups, those of the moderate size (me- dium weight spindle-whorl types) in biconical, con- ical, convex and discoid groups, while, finally, the Fig. 5. The weight-diameter distribution for each period separately (a, b and c) and diameter-height di- stribution chart shown for all respective periods together (d). Tools tell tales – climate trends changing threads in the prehistoric Pannonian Plain 311 smallest weights (light weight spindle-whorl type) appear to be characteristic of the discoid, convex, and, again, biconical groups. Finally, it is obvious that biconical and conical spindle-whorl shapes account for the greatest weight variability in the sample (Fig. 6). Both types are most represented in the Late Eneolithic sample, while the biconical type is the single predominant type in the later, Early Bronze Age assemblage. Convex, followed by discoid types are convincingly the groups most typical of the ear- lier Middle Eneolithic assemblage (Fig. 7). Although the maximum diameter and perforation diameter variables seem to behave quite proportion- ally to one another, it is possible to distinguish some preferences and tendencies when comparing peri- ods. Smaller maximum diameters and smaller per- foration diameters seem to be more typical of the Middle Eneolithic period, while the Late Eneolithic values cluster towards the higher spectrum in the case of both variables. Early Bronze Age values show the greatest variability in their distribution, but even in this case, the inspected variables still correspond proportionally (Fig. 7). This parameter was primar- ily tested for samples with significantly non-propor- tioned correlations, since they would influence the ensuing assumptions, attributing a greater influence of spindles to the tools’ rotation. These would sub- stantially change generalisations regarding rotation- al properties, which are based solely on the whorls’ morphological and weight parameters. If we consider how the spindle-whorl’s rotational cha- racteristics, particularly its moment of inertia, de- pend on the tool’s geometry and weight, a heavier whorl of significant height could have similar rota- tional properties to a much lighter tool of smaller height and bigger maximum diameter. The princi- pals of this approximation, presented by Tomasz Chmielewski and Leszek Gardyński (2010), were used to compare widely defined height and weight categories of tools, not specific objects and values8. Fig. 6. The distribution of weight classes according to height type (a, b and c) and shape type (d), shown for each respective period sepa- rately. 8 Corresponding correlations were suggested by Chmielewski and Gardyński (2010.876): “the height-diameter ratio corresponds quite accurately with the modulation of the basic technical parameters of the tool that is its weight and angular mass. Changing both of the qualities influences the functional characteristics of a given spindle-whorl. For the increase in the angu- lar mass of the tool, in order to slow down its rotational speed, it is purposeful to increase its maximum diameter (whereas this parameter will be characterised with the higher variability). On the other hand, if a high increase in the mass moment of inertia is undesirable (due to the use of shorter fibres that require more twist), but is needed to enlarge the mass of the spindle itself in order to create better yarn tension, the height of the spindle-whorl will increase rapidly, whereas diameter variability will be reduced.” Ana Grabund/ija, Emmanuele Russo 312 The differences in geometry among recorded spin- dle-whorl shapes enabled only rough comparisons and general assumptions. These were based on the expectation that a substantial increase in the spin- dle-whorl’s height (Fig. 8) would lower the tool’s moment of inertia if its weight remained constant. Acceptance of this relational principle allowed fur- ther correlations between different weight and height types (medium-steep with light-high type, me- dium-flat with heavy-high type, heavy-steep with me- dium-flat type and light-flat with medium-steep type), based on their comparatively corresponding or ra- ther similar rotational traits. If we consider these assumptions in the fibre material context it becomes obvious that the medium weight type from the mid- dle-high height class is the most ‘flexible’ among all groups of spindle-whorls, presumably affording a comparable twist or tension performance with the greatest number of different category types (Fig. 9). This accounts for the Late Eneolithic transitional character in the technological sense, since it shows how the most ‘flexible’ spindle-whorl category is highly represented in its assemblage when compared to samples from the other two periods (Fig. 6). The greatest height type variability in the Late Eneolithic assemblage could be interpreted as the intentional manipulation of the tool’s height properties, possi- bly due to the avoidance of a drastic increase in the spindle-whorl’s mass moment of inertia. This kind of tool adaptation is desirable, for example, in process- ing shorter and lighter fibres which require more twist, while the enlargement of the mass of the spin- dle itself is intended, for instance, to obtain better yarn tension (Chmielewski, Gardyński 2010.876). During both the Middle and Late Eneolithic period, light steep types of spindle-whorls are under-repre- sented, but in the case of the light high types, the Middle Eneolithic shows an increase in frequency, which could be associated with wool spinning. Ad- ditionally, the recently reported results of a techno- logical analysis of 4th and early 3rd millennium BC textile tools from Arslantepe in Turkey (Laurito et al. 2014) support this conclusion. Furthermore, the above-mentioned spinning experiments were de- signed to prove that the wider hemispherical and heavier spindle-whorls (comparable to the light high type) were the most efficient tools in terms of quan- tity and quality of yarn. Also, this category proved to be proficient in processing both vegetal and wool- len fibre and suitable for all thread thicknesses9. In- terestingly, the single bone spindle-whorl in our sample10 closely resembles (in shape, method of production, and recorded size and weight values) the aforementioned 4th millennium bone tools from Arslantepe, proposed for spinning wool (Fig. 10). It Fig. 7. The distribution of spindle-whorl maximum diameter and perforation diameter values (a). Histo- grams presenting their ratio variable distribution against period (b). The spindle-whorl shape type dis- tribution for all three periods separately (c). 9 Surprisingly, it has been suggested that the smaller and lighter clay spindle-whorls from Arslantepe were unsatisfactory for spin- ning wool. Furthermore, authors explain how their moment of inertia was too small for short animal fibres, pointing out that wool used in the experiment had presumably longer fibre lengths than early wool. They do propose that metal spindles might have been used to increase the moment of inertia of the small whorls, making them suitable for spinning animal fibres (Laurito et al. 2014). 10 Bone spindle-whorls are very rare in the Pannonian Plain during this period, and the particular find was initially published as a bone pendant (∞ataj 2009.31). Tools tell tales – climate trends changing threads in the prehistoric Pannonian Plain 313 should be mentioned how the results of another re- cent analysis (Vakirtzi 2014) of North Aegean Early Bronze Age tools from Thasos also suggest that this particular spindle-whorl weight class was used for spinning wool. Both light high and light steep tool categories become significantly more represented in the course of the 3rd millennium, as shown by the Early Bronze Age assemblage. These types, including the medium steep type (if we accept the approximated comparisons ex- plained), which is more substantially represented in the Late Eneolithic sample, and the second most fre- quent type in the Early Bronze Age sample, could be appropriate for spinning shorter fibres, presumably wool (Fig. 6). These medium steep types, although heavier, are expected to have a significantly lower moment of inertia due to their geometry, or more precisely, their higher height-diameter ratio. On the other hand, heavy and very heavy types could be connected to processing long plant fibres. Although they have larger height-diameter ratio val- ues and tend to cluster in the high and steep height groups, their weight leads to significantly larger mo- ment of inertia values (too big for processing short or even moderately long fibres that call for more twist). Additionally, their weights alone are too big for the lower tensile strengths of animal fibres. Thus they can be considered appropriate for spinning long plant fibres such as full-length flax. These spindle- whorl types become predominant in the late 4th mil- lennium and continue to be highly represented in the ensuing 3rd millennium assemblage, as shown by the distribution charts for the Late Eneolithic and Early Bronze Age samples (Fig. 6). The technological development did not reveal a lin- ear process leading ‘from plant to animal’ fibre pro- duction. As shown by the trends in maximum height- maximum diameter and maximum height-weight cor- relations, the dynamics of the use of fibre material was more complex (Fig. 11). The greatest height value variabili- ty apparent in the Late Eneolithic peri- od is lowered in the 3rd millennium BC sample. Frequency of the lowest height values is decreased, while the maximum diameter distribution clusters towards the lower values. Climate conditioning The climate of the Holocene was highly variable, and multiple controls must have been responsible for this variabili- ty (Mayewski et al. 2004). According to Heinz Wanner et alii (2009), the Holo- Fig. 8. Reconstructed three-dimensional models of a flat, high and steep spindle-whorl type, based on published conical spindle-whorls found at the Ba- latonoszod-reti dulo site (Horváth 2013). Fig. 9. Diagram of corresponding height and weight types. Fig. 10. A convex spindle-whorl made from the head of a cattle femur bone, weighing 24.6g, from a Furchenstich (Retz-Gajary) context found at Josipovac Punitova≠ki-Veliko polje, dated to the 1st half of the 4th millennium BC (Middle Eneolithic period). Ana Grabund/ija, Emmanuele Russo 314 cene climate was dominated by the influence of summer season orbital forcing; our results are in accordance with this interpretation. In particular, our model simulations revealed that from the 7th millennium BP, summer climatic conditions started to deteriorate in the middle latitudes of the North- ern Hemisphere (NH), mainly due to a decrease in summer insolation, which reached its maximum at around 9000 BP (not shown). For all the simulated climatic parameters, a pronounced trend is evident for the summer season, which resembles one of a complete decrease in insolation (Fig. 12), although the humidity balance reveals an opposite, increasing trend, mainly due to the effect of evapotranspiration as a consequence of the enhanced insolation in the mid-Holocene. Such conclusions are also supported by other stud- ies based on proxy reconstructions for the investi- gated area and its surroundings. In particular, by analysing Holocene conditions through pollen recon- structions from several lakes, in Southern to North- ern Italy and the Alpine region, Michel Magny (Magny et al. 2012) concluded that the mid-Holocene sum- mer precipitation regimes appear to have been oppo- site between the south- and north-central Mediterra- nean: a maximum was present in Sicily and a mini- mum in north-central Italy. Later, Magny et alii (2013) analysed a time series of wetness for the Lake Ledro basin in Northern Italy spanning the last 10 000 years: while the early and mid-Holocene pe- riods show relatively low flood frequency, the late Holocene, from c. 4500 cal BP onwards is characte- rised by an increase, which is in full agreement with the reconstructions from neighbouring Lake Iseo. The pattern of contrasting mid-Holocene summer precipitation regimes was confirmed by Odile Pey- ron et al. (2013) on the basis of pollen-inferred quan- titative estimates and a multi-method approach that revealed minima (maxima) of summer precipitation and lake levels to the north (south) of c. 40° N. Sum- mer temperature showed a similar partition for the mid-Holocene in the central Mediterranean, with warmer (cooler) conditions to the north (south). Mó- nika Tóth et alii (2015) presented a Holocene sum- mer air temperature reconstruction based on fossil chironomids from Lake Brazi, a shallow mountain lake in the Southern Carpathians, with results sug- gesting that from c. 8500 cal BP, chironomid-based summer temperatures decreased in the area. In par- ticular, the period between 6000 and 3000 cal BP was characterised by cooler temperatures in compa- rison to the earlier period. Conversely, winter-time model results do not show a clear trend and the data are characterised by sig- nificant multi-decadal to inter-centennial fluctuations (Fig. 13). For winter, the trend of insolation during the mid-to-late Holocene at the mid-latitudes of the NH is not particularly pronounced (Fig. 13). The be- haviour of the simulated data is probably a result of the system’s internal variability. In winter, clima- tic conditions in Europe are mainly driven by chan- ges in atmospheric circulation (Hurrel 1995; Hur- rel et al. 2003). In particular, the first mode of win- ter atmospheric variability over the North Atlantic is represented by the North Atlantic Oscillation (NAO), which explains one third of the total variance in the sea-level pressure (SLP) field over the area (Hurrel et al. 2003). A positive phase of the winter NAO is associated with an increase in strength and a north- ward shift in westerly winds. This results in moist Fig. 11. The distribution of correlated: a maximum diameter and height values; b weight and height val- ues, for the three period assemblages together. Tools tell tales – climate trends changing threads in the prehistoric Pannonian Plain 315 and warm air advection from the Atlantic to North- ern Europe (55°–70° N) and, consequently, in drier and colder conditions over Southern Europe. Con- versely, the negative phase of the NAO is accompa- nied by weaker and southward shifted (35°–50° N) westerlies, responsible for wetter and warmer win- ter conditions over Southern Europe. The use of the NAO index (Fig. 12.a), which is based on the prin- cipal component time series of the leading Empirical Orthogonal Function (EOF) of the winter SLP ano- malies (Hurrel et al. 2003), allows us to speculate that the oscillations of the simulated winter tempe- rature and precipitation are caused by the variabil- ity between positive and negative phases of this atmospheric pattern. The simulated winter tempera- ture, and particularly humidity, present an extre- mely high anti-correlation (~ –0.7) with the calcu- lated NAO index. Different studies hypothesise that at around 6000 BP the NAO was in a more pronounced positive phase in comparison to present-day conditions (Bonfils et al. 2004; Braconnot et al. 2007a; 2007b; Davis et al. 2003; Mauri et al. 2014; Russo et al. 2016). This is not directly evident in our results and seems to be a problem characteristic of climate models. Never- theless, the changes in the simulated winter condi- tions can be considered physically consistent: the model simulates a reasonable and internally consi- stent climate (Goosse 2012; Von Storch 2004). Other events often reported in studies that are based on proxy-reconstructions are the so-called Rapid Climate Changes (RCC) (Mayewski et al. 2004; Budja 2015; Weninger et al. 2009; 2015; Wanner et al. 2011). They are abrupt cooling events, lasting from a cen- tury to millennia, for which large drifting ice debris has been registered. The complexity of our model Fig. 12. Graphs presenting: a summer temporal evolution of near-surface temperature regional mean computed over the area of study; b time series of summer precipitation + evapotranspiration calculated in mm/day; c insolation changes over the period of study; d time series of rising temperature days above 5 degrees. All the time series are smoothed using a 200-year running mean. Ana Grabund/ija, Emmanuele Russo 316 does not permit a precise reproduction of such events. Additionally, even if evidence supporting them seems clear, their cyclic occurrence and caus- es are still highly debated, as well as the impact they had on a regional scale (Wanner et al. 2011). This is one of the main reasons we focus our attention on long-term trends and the relevance of abrupt oscil- lations in the context of population adaptability. Nonetheless, in our discussion, we take into consi- deration one particular example of RCC and the pos- sible impact it had on the life of Eneolithic commu- nities inhabiting the area. Although in the case of winter, no distinct trend is evident in our simula- tions, and the model results do not display the same level of correspondence with the other studies (as they do in the case of summer, particularly tempera- tures and moisture balance), the evident oscillations are physically plausible. Thus, acknowledging the possibility of the effects of RCCs during the simulat- ed period does not contradict the model results at all. On the contrary, it means that if those events occurred, they only contributed to the evinced dete- rioration in climatic conditions. Discussion The period between the mid-5th and the end of the 3rd millennium BC, in which the spread of both fleece-bearing sheep husbandry and new fibre flax in South East and Central Europe probably occurr- ed, was characterised by profound social changes and has been studied so far in terms of intensified contacts and mobility (Anthony 2007; Leary 2014), environmental change (Binford 1968; Barker 1985) and economic transformation (Sherratt 1981; 1997; 2006; Greenfield 1988; 2005). This provided the entire contextual framework and theoretical back- ground for the present investigation of textile pro- duction trends and their climate dependency in the aforementioned regions. Apart from the extensive research on textile production in Romania (Mazare Fig. 13. Graphs presenting: a winter temporal evolution of near-surface temperature regional mean com- puted over the area of study; b time series of winter precipitation + evapotranspiration calculated in mm/day; c insolation changes over the period of study; d DJF NAO index over the period of study. All the time series are smoothed using a 200-year running mean. Tools tell tales – climate trends changing threads in the prehistoric Pannonian Plain 317 2014) and Bulgaria (Petrova 2011), which took into consideration indirect archaeological evidence from larger and confined geographical sections, the tex- tile tools and production of the period have not yet been systematically approached in the Pannonian Plain contexts. Narrowing the focus on the particu- lar region enabled us to raise specific questions re- garding textile fibre raw materials and final product demand through their dependence on the changing climate. The declining summer trend in tempera- tures and the corresponding rising trend in moisture content might have caused the cultural-historically defined groups of the Post-Neolithic inhabiting the area to be more sensitive to possible climatic fluctu- ations like the simulated winter oscillations. Such events could have acted as a trigger for shifts in fibre procurement practices, resulting in a broadening of resources and, especially, in intensified selection in favour of their fitness. Evidence has shown that the period between 6000 and 5000 BP, normally referred as a Rapid Climate Change event, was generally characterised by glob- ally colder conditions (Weninger et al. 2009; 2011; Mayewski et al. 2004). In this case, the effects of the proposed scenario of a deterioration in climatic con- ditions would eventually have been amplified, and abrupt changes could have had even more drastic ef- fects on the ‘cultural groups’ under consideration. Through a complex causal network, this could have led to substantial perturbations within human soci- eties, as suggested by changes in the archaeological material in Central Europe (Arbogast et al. 1996; Berglund 2003; Magny 2004). Weninger et alii (2009) found that at different times in the 6–5ka RCC period, there were abrupt abandonments of va- rious settlements in Romania, Bulgaria, and Greece. During the same period in the Alpine region, abrupt oscillations on the scale of decades or a century seem to have caused changes in hunting and farm- ing patterns (Schibler 1997). The high-quality organic preservation at Sipplingen, an Alpine lakeshore settlement on the northern shore of Lake Constance in south-west Germany, en- abled comprehensive dendroarchaeological, archaeo- botanical and zooarchaeological investigations that revealed the adaptive character of the settlement and its subsistence strategies in response to chan- ges in climate, environment and cultural influences over time (4000–2800 BC) (Styring et al. 2016.103). Obvious economic changes that occurred during the 4th millennium BC, which have been attributed to climatic deterioration (Schibler et al. 1997), re- veal a dramatic cycle of establishment, expansion and reduction, or even abandonment of settlements around Lake Constance (Billamboz, Köninger 2008). A great deal of evidence of flax cultivation has been found from lake dwellings north of the Alps, (Jaco- met 2009). In particular, the find densities of flax rise considerably during the second half of the 4th millennium BC (Brombacher, Jacomet 1997.249). It is most likely that during the Middle Eneolithic period, which marked the turn and the first centu- ries of the 4th millennium BC, animal products, pre- sumably including fibres, started to be more impor- tant as a result of deteriorating climate conditions. All the scarce textile evidence favours wild plant species, but the functional analysis of the Furchen- stich and Lasinja spindle-whorls suggests that dur- ing this, apparently, intensive foraging period, ani- mal fibres should not be disregarded. Faced with an environmental challenge due to the whimsical climate in the following centuries of the 4th millen- nium BC, in the context of intensified textile pro- duction, foraged plant material and possibly the old variety of flax might have been partially substitut- ed with a new fibre fax in order to meet the grow- ing demands of textile production. It is premature to conclude this, but the above-mentioned archaeobota- nical research supports this idea. The earliest direct evidence of wool, respectively woollen finds from Germany (Rast-Eicher 2014.16) and the North Caucasus (Shishlina et al. 2003), when observed in the framework of changed herding stra- tegies revealed in the contemporary contexts of South East and Central Europe11, intensified sheep husbandry recorded at some sites12 and the spin- 11 Regarding Central Europe, analysed faunal evidence from the Bronocice site in South Eastern Poland (Pipes et al. 2014) suggest that sheep rearing intensified during the second half of the 4th millennium BC (Funnel Beaker horizon). Indeed, the increased herd sizes reported from the site revealed that the majority of animals were slaughtered as adults. In the case of South Eastern Europe, analysis of Late Eneolithic faunal samples from the Bubanj and Mokranjske Stene-potkapina sites in Serbia suggests the predominance of sheep husbandry (Bulatovi≤ 2012; Bulatovi≤, Milo∏evi≤ 2015). Furthermore, analysis of the age profiles from the Mokranjske Stene-potkapina sample attributed to the Kostolac-Cotofeni horizon (late 4th to early 3rd millennium BC) revealed that the adult age group was the most represented. 12 Intensified sheep husbandry was recorded at the Middle Eneolithic Furchenstich site at Pod Kotom – jug pri Krogu I/II (πavel 2009), at the Middle to Late Eneolithic Proto-Boleráz site at Abony (Fábián 2008; 2012), and at Late Eneolithic Boleráz/Baden sites at Balatonőszöd-Temetői dűlő (Horváth 2010) and Balatonkeresztúr-Réti-dűlő (Fábián 2014). Ana Grabund/ija, Emmanuele Russo 318 dle-whorl analysis results, push the presence of wool in the context of fibre production already into the 4th millennium BC. Following the results of our analysis and according to the aforementioned studies, it is very likely that the middle of the 4th millennium BC (characterised by the appearance and spread of Baden culture in the Pannonian Plain) was a period of major climatic stress. Such pressure probably promoted further ma- stering of both fibre resources, thus influencing their specialisation. Intensified sheepherding is usually con- nected to this cultural group (Maran 1998.514–516), and many authors propose its acquaintance with wool (Horvath 2010; Bondar 2012; Struhar et al. 2014). On the other hand, the level of flax pollen in samples from lake-shore settlements in Switzerland indicates intensive flax production, more recognisable in the frequent textile remains (Capitani et al. 2002. 115–120). This allows us to speculate that, during the course of the second half of the 4th millennium BC, both fibre materials gained in importance. By the beginning of the 3rd millennium BC, such strategies had already been mastered and spread, since textile production does not seem to have slow- ed down at this point. On the contrary, judging by the increase in the amount of spindle-whorls from the end of the Eneolithic period, it seems it even in- tensified. More organised fibre material resources had to have been acquired and established by that period. Both the changed environmental and cultur- al conditions resonated further in the new demands for specific types of textile products, which quite possibly corresponded to the intensified use of trans- port and traction. The predominance of very large tools, probably used for plying plant fibres or their filaments in order to make thick and strong threads and ropes which could have been used for harnes- sing animals, would support this scenario. Mobility and the transport of goods would also have pro- moted the trend. The increased variability of Late Eneolithic spindle-whorl assemblages in favour of a balanced distribution of moderate weight types be- tween three main height categories is something that might reflect this kind of broadened fibre as- sortment, both in regard to the raw material resour- ces and demand for end products, although the ob- vious predominance of heavy and very heavy types of tool, particularly in high and steep height catego- ries, greatly accounts for longer plant fibre prefer- ences. This trend is particularly pronounced at the turn of the millennium, and continues in the Vu≠e- dol and Somogyvár-Vinkovci phase. There is a pos- sibility that this reflects the appearance of specia- lised fibre flax and its intensified use in the plying tradition of the late 4th and the following 3rd mil- lennium BC. Impressed plied cord decoration (Grö- mer, Kern 2010; Leghissa 2015) representative of the Early Bronze Age Corded Wear complex (wide- spread in the Pannonian Plain) could attest to the growing importance of plied cordage in the course of the following centuries. Conclusions Three main trends are evident in the spindle-whorl sample. First, the Middle Eneolithic assemblages sug- gest more intensive animal husbandry, which led to the first exploitation of animal fibres. Second, on the basis of the Late Eneolithic tools, continued use of wool may be argued, which was substantially ac- companied by the intensified production of long plant fibre, presumably flax. And third, the results of the analysis of Early Bronze Age spindle-whorls reveal a specialisation of fibres, most probably due to the refinement of both textile fibre resources and demand for final products. Despite the large textile tool sample on which this research is based and regardless of the climate con- ditions that support the outlined timeline for the introduction of both sheep wool and the new fibre flax, already during the Eneolithic in the Pannonian Plain, further zooarchaeological and archaeobota- nical evidence is required to understand and explain the dynamics of these processes in finer detail. The exploration of the new fibre resources occurred si- multaneously in remote contexts and could have been provoked by both cultural and environmental conditions. Numerous interacting factors were probably res- ponsible for the intensification of their exploitation and, to some degree, their further development, which might not have been as linear as we thought. Thus their evolutional character is contrary to the revolutionary scenario. They gradually developed from ordinary foraged fibres into occasional and then into common secondary products. Due to the intensification of their use, they finally became pri- mary and specialised resources for developed textile production. It is plausible that, due to different fac- tors in different areas and periods, similar reasons promoted fibre production as those that later con- tributed to their specialisations. Although the earli- est direct evidence for wool in the studied region dates to the 2nd millennium BC (Grömer et al. 2013; Tools tell tales – climate trends changing threads in the prehistoric Pannonian Plain 319 Rast-Eicher, Bender Jørgensen 2013), its much ear- lier presence must be considered. There are two possible reasons why in Europe the scant textile evidence sample from the 4th and 3rd millennium lacks woollen examples: first, its under- represented use in comparison to flax and other plant fibres, and second, the fact that the European climate is not conducive to its preservation condition- ing (Ryder 1964). Regarding resources for fibre pro- duction, the Middle Eneolithic could mark their ini- tial exploitation phase, while the Late Eneolithic, with evident technological change which gradually result- ed in greater tool standardisation in the Early Bronze Age, marks their second exploitation phase. The ex- ploration phase for both resources might have al- ready started in previous periods, and so future tex- tile research of Early Eneolithic tools might clarify this dynamic. The results of the analysis suggest that in the studied region of South East and Central Eu- rope, wool was probably already being exploited in the 4th and certainly the 3rd millennium BC, although on a smaller scale, first in comparison to flax, and also in comparison to the established wool econo- mies of contemporary urban centres in the Near East. The continuous deterioration in summer climatic conditions in the Pannonian Plain region during these two millennia would still have provided con- ditions congenial to fibre flax. Areas with less fa- vourable conditions for cultivating it might have focused their developing textile production on other resources, causing them to specialise in alternatives. This is a question of difference in fibre specialisa- tions, which so far have been interpreted as indi- cations of use, creating an unacceptable dichotomy in the period of intensified mobility and contacts. A growing demand for raw materials, and metal in particular, resulted in intensified trade that could support this kind of fibre competition through divi- sion in specialisation during the 4th millennium, while textiles, and presumably fibres, may have been substantially involved in both short- and long-dis- tance trade. Metal objects were certainly accountable for far-reaching cultural contacts, possibly facilitating breed mobility, which then accelerated the gene flow and the evolution of both fibres. Copper axes from burial mounds at Moravian TRB-Boleráz sites were wrapped in flax textiles, which could account for a combination of two luxury goods (Baldia et al. 2008.264–265). Sherratt (Sherratt 1997; 2006) con- nected both the animal traction and wool with social stratification, explaining them as symbols of elites. Quite possibly, this connection should be to some extent related to inequalities between animals and plants reflected in the people who had privilege to select among them. Although wool’s appearance and origin were for a long time considered within the textile economies of the urban revolution package in Bronze Age Mesopotamia (McCorriston 1997; Kimbrough 2006), the oldest finds, genetic evidence, and the analysis of the prehistoric textile tools push- ed its early appearance on the fibre scene into a new and much wider framework regarding its theoretical (SPR), geographical (Fertile Crescent), chronological (Bronze Age) and social (stratified organised sys- tems) context. On the other hand, archaeobotanical research on the flax plant, taken in consideration with the pro- cessed textile evidence from circum-Alpine pile dwel- lings, place the fibre evolution in the same period of the thriving copper trade in the 4th millennium BC, suggesting that both resources were exploited in the production of Eneolithic textiles. Although both scenarios were connected to many cultural and environmental trends, climate change was certainly accountable, if not for their evolution, then for in- fluencing the dynamics of their exploitation. During the late 4th and early 3rd millennium BC, an interesting example of a technological shift occurr- ed, one which accommodated to both new options of presumed raw material resources, and new de- mands for a seemingly greater variety of end prod- ucts. The moderate weight types of spindle-whorls significantly represented in all height classes during this technological phase suggest that all of the fibres considered could have been used. This was evident- ly accomplished through a gradual change in tool properties, while assemblages were consecutively adjusted. 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