Palaeoecological investigations connected with extensive pre-bog, stone walls, and field systems at Kilmore, Dingle peninsula, Ireland, are presented. The main pollen profile, KLM I, spans the last 4000 years. When the record opened, pine (Pinus sylvestris) was already a minor tree, oak (probably Quercus petraea) was the main tall-canopy tree, and birch and alder were dominant locally. Substantial farming is recorded between ca. 1530 and 600 BCE (Bronze Age) when the stone walls were likely constructed. From ca. 560 CE onwards, intensive farming was conducted for much of the time. A largely treeless landscape emerged in the late twelfth century CE. Fine-spatial reconstructions of landscape and vegetation dynamics, including the timing of blanket bog initiation, are made. Post-glacial change in the western Dingle peninsula, based on published Holocene lake profiles and drawing on the new information presented here, is discussed. Reported are (a) fossil spores of the filmy ferns Hymenophyllum tunbrigense, H. wilsonii, and Trichomanes speciosum; (b) the first fossil pollen record for Arbutus unedo (strawberry tree) in the Dingle peninsula (540 CE); and (c) the first published records for Fagopyrum fossil pollen in Ireland, indicating that buckwheat was grown at Kilmore in the late eighteenth/early nineteenth centuries.

Nastanak i razvoj neolitskih kultura na bosanskom području zavisi od niza faktora prirodne sredine. Pored geografskog položaja znatnu ulogu igraju klima, zemljište, kao i razvitak flore i faune. Radi toga su, kod projekta Okolište od samog početka istraživanja uključene razne naučne discipline. Paralelno uz arheološke radove (2002-2005) izvršene su geološke, arheobotaničke, zoološke i geomagnetske prospekcije, sa namjerom da različitim naučnim metodama dopunimo sliku života neolitskog stanovništva lokaliteta Okolište.

An extensive drilling campaign to reconstruct a Neolithic landscape in the Ahlen-Falkenberger Moor in northwest Germany made it possible to document a cultural layer beneath a thick layer of bog peat formed by settlement activities, forest pasture or livestock grazing (site Wanna 1603). First excavations revealed finds that correspond to the typical spectrum of a settlement site. Both the typological and the absolute chronological dating, show that it was used between 3300 and 3000 cal BC and is therefore associated with the Funnel Beaker culture (TRB). This makes the site one of the few proven settlements with a preserved cultural layer in the TRB West group. In addition to the archaeological investigations, pedological, botanical and geological studies were also carried out. This made it possible to trace the development of the former coastline, the nearby wetlands and the successive covering of the site by bog peat. A large number of boreholes also made it possible to record the spatial extent of the site. Thus, landscape changes presumably triggered by human use could be identified. The temporal proximity of the settlement and land use to the changes in the landscape also indicates that the choice of settlement site was influenced by the latter. In sum, our research shows that in Wanna 1603 people of the TRB settled near a group of megalithic tombs on an island or pen­ insula in wetlands.

In the Elbe-Weser Triangle, located in the north-west of Germany and framed by the rivers Elbe and Weser, a total of approx. 350 megaliths of the Funnel Beaker Culture (FBC) have been identified. Despite their large number there is little knowledge about the monuments themselves, their architecture or their history of use. This lack of information is partly attributed to widespread destruction or disturbance of the megaliths located in the open landscape during the past centuries. Other monuments have been covered by bog or clay deposits of marine inundations and thus have not been investigated or even found, yet. However, due to intense draining measures within the bog area of Ahlen-Falkenberg, dist. Cuxhaven several megalithic graves were discovered in the past decades, revealing a protected burial landscape of the 4th and 3rd millennium BC. This paper focuses on three passage graves, which have been examined in the scope of a research project in the years 2019-2022. The fieldwork has brought to light well preserved elements of the original burial structures, including a protective massive stone packing around the chambers. We were further able to identify and typochronologically date different burial activities of the FBC, as well as activities related to people associated with the Single Grave Culture. The latter seem to have had massive impact on the monuments and their accessibility. In the light of environmental changes in the Neolithic, the reconstruction of the monuments biographies was attempted. In sum the monuments show individual, local and regional traditions that were embedded in a supra-regional FBC network.

A 600-cm peat succession covering the last ca. 10,000 years from Wildseemoor, a perilacustrine ombrotrophic peat bog in the northern Black Forest, offers the opportunity to study Holocene environmental evolution and fire history in the Upper Rhine region. More particularly it is used here for a pilot study 1) dealing with the influence of potential peat growth disturbance on charcoal influx interpretation, and 2) proposing a new approach to disentangle regional from local influences on charcoal influx, based on the internal variability of charcoal particle size variations. The latter suggests a fluctuating local to regional main source of charcoal influx to Wildseemoor. Two plausible age-depth models were established based on seven identified radiocarbon-dated macrofos- sils, showing either reduced depositional rates or breaks in deposition during the early- to mid-Holocene and (less extensively) the Middle Ages, that are not visible to the naked eye in the sediment sequence. The Holocene Climatic Optimum, a time interval of particular interest with its climate conditions analogue to future projections, falls directly into an extensive period of reduced accretion or depositional hiatus. This severely impacts the interpretation of the charcoal record for that period but highlights potential impacts of climate variations on peat growth. Regardless which age-depth model is used, phases of high charcoal influx were iden- tified after ca. 5,000 cal BP and can most likely be linked to anthropogenic pressure on the region. The findings of this study may be used in future Holocene fire dynamics reconstructions, as they stress the necessity for high-resolution age control, but also the opportunity to exploit periods of disturbed/halting peat growth as a proxy to detect past periods of climate change. Using the internal variability of charcoal particle size to estimate local versus regional charcoal transport tendency showed promising results and may help push forward charcoal record interpretations in the future.

Reliable quantitative vegetation reconstructions for Europe during the Holocene are crucial to improving our understanding of landscape dynamics, making it possible to assess the past effects of environmental variables and land-use change on ecosystems and biodiversity, and mitigating their effects in the future. We present here the most spatially extensive and temporally continuous pollen-based reconstructions of plant cover in Europe (at a spatial resolution of 1° × 1°) over the Holocene (last 11.7 ka BP) using the ‘Regional Estimates of VEgetation Abundance from Large Sites’ (REVEALS) model. This study has three main aims. First, to present the most accurate and reliable generation of REVEALS reconstructions across Europe so far. This has been achieved by including a larger number of pollen records compared to former analyses, in particular from the Mediterranean area. Second, to discuss methodological issues in the quantification of past land cover by using alternative datasets of relative pollen productivities (RPPs), one of the key input parameters of REVEALS, to test model sensitivity. Finally, to validate our reconstructions with the global forest change dataset. The results suggest that the RPPs.st1 (31 taxa) dataset is best suited to producing regional vegetation cover estimates for Europe. These reconstructions offer a long-term perspective providing unique possibilities to explore spatial-temporal changes in past land cover and biodiversity.

The estuary of the Rio Jaguaribe (NE Brazil) is filled by a sediment sequence of more than 23 m and characterised by estuarine plains that - today - extend 30 km upstream. We investigated the sedimentary dynamics in the Rio Jaguaribe estuary since the early Holocene by means of clay mineralogical analyses, as well as sediment analyses from 11 sediment cores. The clay mineralogical approach proves to provide the most robust results. A transition of the illite/kaolinite peak area ratio from 0.3 to 1.8 within the vertical depositional record suggests a change of sediment transport direction over time. Whereas in the lower sequence marine influence dominates, characterised by the relatively high kaolinite content originating from the weathered Barreira formation at the coast, in the upper sequence sediments of fluvial origin dominate, which are characterised by the relatively high illite content originating from the crystalline rocks in the source area of the Jaguaribe river. The depositional architecture of the Holocene sediments of the Jaguaribe estuary shows a seawards prograding infill, assumed to have occurred since the mid-Holocene and supports studies suggesting a stagnating or slightly falling relative sea level (RSL) since similar to 7000 BP.

Global vegetation over the past 18,000 years has been transformed first by the climate changes that accompanied the last deglaciation and again by increasing human pressures; however, the magnitude and patterns of rates of vegetation change are poorly understood globally. Using a compilation of 1181 fossil pollen sequences and newly developed statistical methods, we detect a worldwide acceleration in the rates of vegetation compositional change beginning between 4.6 and 2.9 thousand years ago that is globally unprecedented over the past 18,000 years in both magnitude and extent. Late Holocene rates of change equal or exceed the deglacial rates for all continents, which suggests that the scale of human effects on terrestrial ecosystems exceeds even the climate-driven transformations of the last deglaciation. The acceleration of biodiversity change demonstrated in ecological datasets from the past century began millennia ago.

Climate warming is expected to cause a poleward spread of species, resulting in increased richness at mid to high latitudes and weakening the latitudinal diversity gradient. We used pollen data to test if such a change in the latitudinal diversity gradient occurred during the last major poleward shift of plant species in Europe following the end of the last glacial period. In contrast to expectations, the slope of the gradient strengthened during the Holocene. The increase in temperatures around 10 ka ago reduced diversity at mid to high latitude sites due to the gradual closure of forests. Deforestation and the introduction of agriculture during the last 5 ky had a greater impact on richness in central Europe than the earlier climate warming. These results do not support the current view that global warming alone will lead to a loss in biodiversity, and demonstrate that non-climatic human impacts on the latitudinal diversity gradient is of a greater magnitude than climate change.

Die Analyse zweier Bohrkerne von Grund der Nordsee und dem in Analogie mit Doggerland bezeichneten ehemaligen Nordseefestland boten die Möglichkeit eines besseren Verständnisses pleistozäner und frühholozäner Vegetationsgeschichte. Basierend auf hochauflösenden Pollendiagrammen an Basalen Torfen wurden Vegetationsentwicklungen und Umweltbedingungen untersucht. Die Diagramme zeigen, dass sich die Mitteleuropäische Grundsukzession in weiten Teilen nachverfolgen lässt. Eine Bestimmung der Holzkohlekonzentrationen wurde vorgenommen, jedoch konnten keine sicheren Nachweise für menschliche Aktivität erbracht werden.

The European Pollen Database (EPD) is a community effort to archive and make available pollen sequences from across the European continent. Pollen sequences provide records that may be used to infer past vegetation and vegetation change. We present here maps based on 828 sites from the EPD giving an overview of changes in postglacial pollen assemblages in Europe over the past 15,000 years. The maps show the distribution and abundance of 54 different pollen taxa at 500 year intervals, supported by new age-depth models and associated chronological uncertainty analysis. Results show the individualistic patterns of spread of different pollen taxa, and provide a standardized dataset for further analysis, defining a spatial context for the study of past plant and vegetation changes and other aspects of environmental history in Europe.