KRIEVU KALNS HILL-FORT: NEW DATA ON THE LATE BRONZE AGE AND PRE-ROMAN IRON AGE IN WESTERN LATVIA

The article examines the results of the 2012 and 2013 archaeological excavations of Skrundas Krievu kalns hill-fort, situated in western Latvia. Krievu kalns was listed as a site in the 1920s, but it was not regarded as a hill-fort. During a site inspection, striated pottery was discovered, and this indicated that it might be numbered as a Late Bronze Age and Pre-Roman Iron Age habitation. Excavations revealed the site to be a hill-fort that was fortified in the 11th to the ninth century BC with a palisade made of vertical timbers. In the eighth to the fiftth century BC, the defences were moved outwards, thus enlarging the living area. There was possibly even later a third fence. Krievu kalns may be classed as a Late Bronze Age hill-fort with striated pottery, reflecting the characteristic Bronze Age cultural traditions of western Latvia.Key words: Krievu kalns, hill-fort, buildings, finds, Late Bronze Age, Pre-Roman Iron Age.DOI: http://dx.doi.org/10.15181/ab.v26i0.202

Annual pollen traps reveal the complexity of climatic control on pollen productivity in Europe and the Caucasus

Annual PAR (pollen accumulation rates; grains cm−2year−1) were studied with modified Tauber traps situated in ten regions, in Poland (Roztocze), the Czech Republic (two regions in Krkonoše, two in Šumava), Switzerland (4 regions in the Alps), and Georgia (Lagodekhi). The time-series are 10-16years long, all ending in 2007. We calculated correlations between pollen data and climate. Pollen data are PAR summarized per region (4-7 traps selected per region) for each pollen type (9-14 per region) using log-transformed, detrended medians. Climate data are monthly temperature and precipitation measured at nearby stations, and their averages over all possible 2- to 6-month windows falling within the 20-month window ending with August, just prior to the yearly pollen-trap collection. Most PAR/climate relationships were found to differ both among pollen types and among regions, the latter probably due to differences among the study regions in the habitats of plant populations. Results shared by a number of regions can be summarized as follows. Summer warmth was found to enhance the following year's PAR of Picea, Pinus non-cembra, Larix and Fagus. Cool summers, in contrast, increase the PAR of Abies, Alnus viridis and Gramineae in the following year, while wet summers promote PAR of Quercus and Gramineae. Wetness and warmth in general were found to enhance PAR of Salix. Precipitation was found to be more important for PAR of Alnus glutinosa-type than temperature. Weather did not have an impact on the PAR of Gramineae, and possibly of Cyperaceae in the same year. Care is advised when extrapolating our results to PAR in pollen sequences, because there are large errors associated with PAR from sediments, due to the effects of taphonomy and sedimentation and high uncertainty in dating. In addition, in pollen sequences that have decadal to centennial rather than near-annual resolution, plant-interaction effects may easily out-weigh the weather signa

Krievukalno (Krievu Kalns) piliakalnis: nauji duomenys apie vėlyvąjį bronzos amžiaus ir ikiromėniškąjį geležies amžiaus laikotarpius vakarų Latvijoje

The article examines the results of the 2012 and 2013 archaeological excavations of Skrundas Krievu kalns hill-fort, situated in western Latvia. Krievu kalns was listed as a site in the 1920s, but it was not regarded as a hill-fort. During a site inspection, striated pottery was discovered, and this indicated that it might be numbered as a Late Bronze Age and Pre-Roman Iron Age habitation. Excavations revealed the site to be a hill-fort that was fortified in the 11th to the ninth century BC with a palisade made of vertical timbers. In the eighth to the fiftth century BC, the defences were moved outwards, thus enlarging the living area. There was possibly even later a third fence. Krievu kalns may be classed as a Late Bronze Age hill-fort with striated pottery, reflecting the characteristic Bronze Age cultural traditions of western Latvia

Holocene relative shore-level changes and development of the Ģipka lagoon in the western Gulf of Riga

Holocene relative shore-level changes and development of the G ipka palaeolagoon in the western Gulf of Riga are reconstructed using multiproxy analyses by combining litho-, biostratigraphical and chronological data with remote sensing and geophysical data. The results show the development of the G ipka basin from the Ancylus Lake/Initial Litorina Sea coastal zone (before c. 9.1 cal. ka BP) to coastal fen (c. 9.1 to 8.4 cal. ka BP) and gradual development of the Litorina Sea lagoon (c. 8.4 to 4.8 cal. ka BP) and its transition to a freshwater coastal lake (c. 4.8 to 4.6 cal. ka BP), fen (c. 4.6 to 4.2 cal. ka BP), and river floodplain (since c. 4.2 cal. ka BP). The highest shorelines of the Ancylus Lake and Litorina Sea were mapped at an elevation of 12–11 and 9 m a.s.l., respectively. A new relative shore level (RSL) curve for the western Gulf of Riga was constructed based on RSL data from the G ipka area and from nearby Ruhnu Island studied earlier. The reconstruction shows that the beginning of the lastmarine transgressionin the western Gulf of Riga started at c. 8.4 cal. ka BP, and concurred with the 1.9 m RSL rise event recorded from the North Sea basin. Diatom analysis results indicate the existence of the G ipka lagoon between c. 7.7 and 4.8 cal. ka BP, with the highest salinityc. 6.1 cal. ka BP. During the existence of the brackish lagoon, settlement sites of the Neolithic hunter–gatherer groups existed on the shores of the lagoon in the period c. 6.0 to 5.0 cal. ka BP

Compositional turnover and variation in Eemian pollen sequences in Europe

The Eemian interglacial represents a natural experiment on how past vegetation with negligible human impact responded to amplified temperature changes compared to the Holocene. Here, we assemble 47 carefully selected Eemian pollen sequences from Europe to explore geographical patterns of (1) total compositional turnover and total variation for each sequence and (2) stratigraphical turnover between samples within each sequence using detrended canonical correspondence analysis, multivariate regression trees, and principal curves. Our synthesis shows that turnover and variation are highest in central Europe (47–55°N), low in southern Europe (south of 45°N), and lowest in the north (above 60°N). These results provide a basis for developing hypotheses about causes of vegetation change during the Eemian and their possible drivers