Dendrochronological analyses of wood samples from a Late Bronze to early Iron Age site at Lake Luokesa,Lithuania

Tree rings of 184 archaeological wood samples from two Late Bronze to early Iron Age lake sites at Lake Luokesa (Luokesai e?eras), Lithuania, Moletai district, were analyzed. Despite severe difficulties with synchronization, Pinus (pine), Quercus (oak) and Alnus (alder) yielded some cross-datable series. The general picture is that the settlers chose small trees as timber, which they used in their natural round shape. The trees did not grow in homogeneous even-aged stands, but show very different ages and growth levels. Despite the generally low numbers of tree rings in the individual samples, the strong archaeological framework allowed cross-dating of some series and the building of chronologies for single structures. Based on these attempts, a 90 year long first floating chronology of the settlement structures is presented. Luokesa Site 2 (L2) was mainly built within the relative year 53. Luokesa Site 1 (L1) was certainly in use from the relative year 74 onwards. All fences at L1 show their main building activity in the relative year 81, four years after the main building activities in the village itself. It can be concluded that the settlement L1 was in use for at least 16 years. Because of the lack of a standard dendrochronological curve for the Baltic region, wiggle-matching was applied to obtain an absolute date for both settlements. The data clearly show that all samples relate to the Late Bronze–early Iron Age. The period where all wiggle matching results overlap is the period between 625 and 535 bc (the 2σ ranges are given). Based on the dating, duration and timber characteristics of the occupation, comparisons with Polish early Iron Age sites are made, which indicate a close resemblance in terms of wood use and settlement concept.     

Living in wetlands in the southeastern Baltic region during the Late Bronze to early Iron Age: the archaeological context of the Luokesa lake settlements

The prehistoric lake settlement tradition is spread far beyond the region of the Alps, and it has been known for a long time that lake settlements are not a characteristic of one particular area. The present paper presents the results of the first comprehensive, interdisciplinary investigations of such types of sites in Lithuania, the two lake settlements at Lake Luokesa (Luokesai e?eras). They were excavated with underwater archaeology techniques between 2000 and 2011. They are Late Bronze to early Iron Age transition (LBA–EIA) in date and were probably built and inhabited during a short period between 625 and 535 cal bc. The excavated archaeological material contains a wealth of well-preserved wooden architectural details and other organic materials. Therefore, the importance and unique character of these sites is beyond question. This paper gives an overview of the history of research on lake settlements in northeastern Europe. In addition, the archaeological material of the LBA–EIA settlements at Lake Luokesa is evaluated in the context of the other lake settlements in the southeastern Baltic region. Existing hypotheses and interpretations of the origins, development and use of the lake settlements of this region are discussed. All the investigations which have been done, including archaeobotany, palynology, dendrochronology and geoarchaeology, provide data for a well-grounded interpretation and reconstruction of the Luokesa lake settlements.     

New insights into agriculture in northwestern France from the Bronze Age to the Late Iron Age: a weed ecological approach

Vegetation History and Archaeobotany - New plant macrofossil studies in northwestern France enable a better insight into agriculture through the Bronze and Iron Age. Most of the previous analyses,...     

Pollen diagrams and prehistoric fields: the case of Bronze Age Haarlem, the Netherlands

The excavation of a Bronze Age field surrounded by peat in the vicinity of the Dutch town of Haarlem afforded a good opportunity to study the pollen rain released by such prehistoric fields. Pollen analysis of a core obtained from a peat deposit at a distance of 10m from the field's border revealed only a weak signal of a possible field. The conclusion is that the presence of prehistoric fields is difficult to detect by means of pollen analysis alone.     

Analysis of the fuel wood used in Late Bronze Age and Early Iron Age copper mining sites of the Schwaz and Brixlegg area (Tyrol,Austria)

Charcoal analysis was carried out as part of an interdisciplinary project focusing on the copper mining history of the former mining area of Schwaz and Brixlegg, a region pivotal as a copper source in prehistoric Europe. The goal was to use remains of carbonised wood to investigate environmental implications of prehistoric mining, as well as to gain new insight about the ancient mining technique of fire-setting. Charcoal samples from seven copper mining sites (Late Bronze Age to Early Iron Age) were analysed. The results reveal a strong preference for coniferous wood as fuel in fire-setting, but not in ore smelting/roasting processes. Species composition at the ore-processing sites indicates moderate forest degradation processes caused by human intervention.     

Late holocene history and vegetation dynamics of a floodplain alder carr: A case study from eastern Bohemia, Czech Republic

Vegetation development in the lowland floodplain alder carr “Na bahně” (eastern Bohemia, the Czech Republic) has been studied by means of pollen and macrofossil analyses and combined with vegetation analysis performed over the last 70 years. Local successional changes started with an oxbow lake (160 cal BC) which has later terrestrialised (630 cal AD). Then it changed from a typical alluvial fen into aSphagnum-dominated spring mire (950 cal AD) supplied by water arising from a river terrace surrounding the locality from three sites. In the centre of this wetland a small patch of alder carr developed (100 cal. AD), showing some tendency towards cyclic succession. The alder carr alternated several times with an openCarex fen (1100 cal AD to recent). The last fen-to-alder carr transition has been documented by direct observation during this century. Possible autogenic and allogenic factors driving the succession are discussed. The model of autogenic cyclic succession corresponds well with direct field observations and can be used to interpret alder carr structure, its dynamics, and function.     

Flax seed production: evidence from the early Iron Age site of Tel Beth-Shean, Israel and from written sources

For thousands of years, flax was a winter crop of major importance in the ancient Levant, second only to wheat and barley. It was cultivated from the beginning of the early Neolithic period through to Roman times and it is still grown there today. Flax seeds (linseed) contain high concentrations of two essential polyunsaturated fatty acids—linoleic acid (ω-6) and α-linolenic acid (ω-3), which cannot be produced by the human body. Their oxidation occurs rapidly in the air. So, long term storage of linseed needed airtight containers, and tightly stoppered bottles could be used to keep its oil as a remedy. However, were flax seeds consumed as a food, oil or medicament in ancient periods? How commonly were flax seeds eaten? From archaeobotanical finds of flax seed, it is difficult to determine whether the flax was cultivated for fibres alone or for its seeds that can be cold-pressed to release the valuable oil. We have therefore studied ancient written documents describing various uses of flax seeds, including their consumption as a food supplement and uses in medical applications. We conclude that until recently flax was grown primarily for textile fibres, and only smaller quantities of flax seeds were consumed. So, the flax seed finds from the early Iron Age site of Tel Beth-Shean also represent seed consumption or oil extraction.     

Flax and weld: archaeobotanical records from Mutina (Emilia Romagna, Northern Italy), dated to the Imperial Age, first half 1st century a.d.

In the city centre of Modena (Emilia Romagna, Northern Italy) a noteworthy amount of carpological remains attributable to flax and weld came to light dated to the Imperial Age (first half 1st century a.d.). Flax remains, i.e. capsules and extremely small seeds, suggest the presence of either immature seeds and fruits of cultivated flax (Linum usitatissimum L.) or of a wild flax species (Linum bienne Mill.). The quantity of these remains along with the co-presence of seeds of Reseda luteola, an important dye plant, leads to the hypothesis of the cultivation of both flax and weld for textile manufacturing purposes, which are attested as important in the economy of the Roman period.     

The history of crops and crop weeds in south-western Germany from the Neolithic period to modern times, as shown by archaeobotanical evidence

The results of more than 100 archaeobotanical investigations from south-western Germany have been arranged into chronological groups and analyzed with a spreadsheet to obtain presence data and the numbers of taxa present in the various time periods. They show an increase in the number of plant taxa cultivated in gardens since the Roman period, a decrease in the crops that were the earliest to be cultivated, especially emmer, and an increase of spelt, rye and oats in the course of time. New crop weeds appear, including an increasing number of southern plants originating from open vegetation. This is more likely to be a result of the intensification of agriculture than from increased human mobility. The crop weeds, grouped together according to their requirements for soil nutrients, show increasing soil acidification through the course of time.     

Towards an Absolute Chronology for the Aegean Iron Age: New Radiocarbon Dates from Lefkandi,Kalapodi and Corinth

The relative chronology of the Aegean Iron Age is robust. It is based on minute stylistic changes in the Submycenaean, Protogeometric and Geometric styles and their sub-phases. Yet, the absolute chronology of the time-span between the final stages of Late Helladic IIIC in the late second millennium BCE and the archaic colonization of Italy and Sicily toward the end of the 8^th century BCE lacks archaeological contexts that can be directly related to events carrying absolute dates mentioned in Egyptian/Near Eastern historical sources, or to well-dated Egyptian/Near Eastern rulers. The small number of radiocarbon dates available for this time span is not sufficient to establish an absolute chronological sequence. Here we present a new set of short-lived radiocarbon dates from the sites of Lefkandi, Kalapodi and Corinth in Greece. We focus on the crucial transition from the Submycenaean to the Protogeometric periods. This transition is placed in the late 11^th century BCE according to the Conventional Aegean Chronology and in the late 12^th century BCE according to the High Aegean Chronology. Our results place it in the second half of the 11^th century BCE.     

Plant food subsistence in the human diet of the Bronze Age Caspian and Low Don steppe pastoralists: archaeobotanical,isotope and <Superscript>14</Superscript>C data

The paper presents the result of analysis of charred food on the interior part of the vessels from the graves of the East Manych and West Manych Catacomb archaeological cultures (2500–2350 cal bc). The phytolith and pollen analyses identified pollen of wild steppe plants and phytoliths of domesticated gramineous plants determined as barley phytoliths. Direct ¹⁴С dating of one of the samples demonstrates that barley spikelets and stems were used in funeral rites by local steppe communities. However, there are no data suggesting that steppe inhabitants of the Lower Don Region were engaged in agriculture in the mid-3000 bc. Supposedly, barley could have reached the steppes through seasonal migrations of mobile pastoralists to the south, use of North Caucasus grasslands in the economic system of seasonal moves and exchange with local people. Nevertheless, presence of carbonized barley seeds in the occupation layers at North Caucasus settlements of 4000–3000 bc requires confirmation by direct ¹⁴С dating of such samples.     

Facies pattern and sea-level dynamics of the early Late Cretaceous transgression: a case study from the lower Danubian Cretaceous Group (Bavaria,southern Germany)

The facies development and onlap pattern of the lower Danubian Cretaceous Group (Bavaria, southern Germany) have been evaluated based on detailed logging, subdivision, and correlation of four key sections using an integrated stratigraphic approach as well as litho-, bio-, and microfacies analyses. Contrary to statements in the literature, the transgressive onlap of the Regensburg Formation started in the Regensburg–Kelheim area already in the early Early Cenomanian Mantelliceras mantelli ammonite Zone and not in the Late Cenomanian. In the Early Cenomanian, nearshore glauconitic-bioclastic sandstones prevailed (Saal Member), followed by Middle to lower Upper Cenomanian mid-shelf siliceous carbonates intercalated with fine-sandy to silty marls (Bad Abbach Member). Starting in the mid-Late Cenomanian (Metoicoceras geslinianum ammonite Zone), a considerable deepening pulse during the Cenomanian–Turonian Boundary Event (CTBE) initiated the deposition of the deeper shelf silty marls of the Eibrunn Formation, which range into the early Early Turonian. During the CTBE transgression, also the proximal Bodenwöhrer Senke (ca. 40 km NE of Regensburg) was flooded, indicated by the onlap of the Regensburg Formation onto Variscan granites of the Bohemian Massif, overlain by a thin tongue of lowermost Turonian Eibrunn Formation. A detailed record of the positive δ¹³C excursion of the global Oceanic Anoxic Event (OAE) 2 has been retrieved from this shallow-water setting. An integrated approach of bio-, event-, carbon stable isotope and sequence stratigraphy was applied to correlate the sections and to decipher the dynamics of this overall transgressive depositional system. The Cenomanian successions show five prominent unconformities, which correlate with those being known from basins in Europe and elsewhere, indicating their eustatic origin. The rate of sea-level rise during the CTBE suggests glacio-eustasy as a driving mechanism for Late Cenomanian sea-level changes. The Regensburg and Eibrunn formations of the lower Danubian Cretaceous Group are highly diachronous lithostratigraphic units. Their regional distribution and northeast-directed onlap pattern onto the southwestern margin of the Bohemian Massif can readily be explained by the lateral movements of roughly coast-parallel (i.e., NW/SE-trending) facies belts of a graded shelf system transgressing on a northeastward-rising substrate. It took the Cenomanian coastline ca. 6 Ma to transgress from southwest of Regensburg to the topographically elevated granite cliffs southeast of Roding in the Bodenwöhrer Senke (=60 km distance).     

Iron: an essential cofactor for the conversion of 1-aminocyclopropane-1-carboxylic acid to ethylene

The activity of the ethylene-forming enzyme (EFE) in suspension-cultured tomato (Lycopersicon esculentum Mill.) cells was almost completely abolished within 10 min by 0.4 mM of the metal-chelating agent 1,10-phenanthroline. Subsequent addition of 0.4 mM FeSO₄ immediately reversed this inhibition. A partial reversion was also obtained with 0.6 mM CuSO₄ and ZnSO₄, probably as a consequence of the release of iron ions from the 1,10-phenanthroline complex. The inhibition was not reversed by Mn²⁺ or Mg²⁺. Tomato cells starved of iron exhibited a very low EFE activity. Addition of Fe²⁺ to these cells caused a rapid recovery of EFE while Cu²⁺, Zn²⁺ and other bivalent cations were ineffective. The recovery of EFE activity in iron-starved cells was insensitive to cycloheximide and therefore does not appear to require synthesis of new protein. The EFE activity in tomato cells was induced by an elicitor derived from yeast extract. Throughout the course of induction, EFE activity was blocked within 10–20 min by 1,10-phenanthroline, and the induced level was equally rapidly restored after addition of iron. We conclude that iron is an essential cofactor for the conversion of 1-aminocyclopropane-1-carboxylic acid to ethylene in vivo.     

Fire and stone clearance in Iron Age agriculture: new insights inferred from the analysis of terrestrial macroscopic charcoal in clearance cairns in Hamneda,southern Sweden

Areas with ancient clearance cairns have been studied in Hamneda, Småland Uplands, southern Sweden, by archaeological and palaeoecological methods. Based on numerous radiocarbon dates and stratigraphical analyses, the local introduction of stone clearance is dated to the first century A.D. The clearance cairns reflect a system of semi-mobile cultivation that lasted until c. A.D. 900. Pollen and macrofossil analyses provide information on cereal growing and pastures in these clearance cairn areas, while charcoal analyses reveal details on the agrarian expansion dynamics and the use of fire in vegetation clearance. In the expansion phase, Quercus (oak) woodlands were cleared and transformed to open pastures and arable land, partly by the use of fire. A secondary succession of Betula (birch) and Corylus (hazel) was dealt with by fire clearances to keep pastures open and to prepare new arable plots. In the long run, Betula in particular was favoured by the land-use system. The mobility of the cultivation system is discussed together with the causes behind the introduction of stone clearance. A possible causal relationship with the introduction of hay mowing is also discussed.     

Paleoparasitological analysis of coprolites from K2, an Iron Age archaeological site in South Africa: the first finding of Dicrocoelium sp. eggs

Until now, Dicrocoelium sp. eggs have only been recorded from European and 1 North American archaeological sites. We present evidence for the first record of Dicrocoelium sp. from an African archaeological site. A paleoparasitological study was conducted on 7 coprolite samples from K2, a Late Iron Age site on the farm Greefswald, in the Northern Province of South Africa. Standard parasitological analysis revealed the presence of Dicrocoelium sp. and Trichuris sp. eggs. Today, the parasite does not occur in this region. Trichurid eggs are a relatively common find in paleoparasitological analysis. The presence of Dicrocoelium sp. provides new clues about the antiquity of this parasite, as well as aspects of ancient environment, climate, and interactions among humans, animals, and parasites.