scholarly journals A geostatistical approach to modelling human Holocene migrations in Europe using ancient DNA

2019 ◽  
Author(s):  
Fernando Racimo ◽  
Jessie Woodbridge ◽  
Ralph M. Fyfe ◽  
Martin Sikora ◽  
Karl-Göran Sjögren ◽  
...  
Keyword(s):  
Bronze Age ◽  
Ancient Dna ◽  
Large Scale ◽  
Local Fauna ◽  
Population Replacement ◽  
European Continent ◽  
The Holocene ◽  
Geostatistical Approach ◽  
Broad Leaf ◽  
Westward Movement

AbstractThe European continent was subject to two major migrations of peoples during the Holocene: the northwestward movement of Anatolian farmer populations during the Neolithic and the westward movement of Yamnaya steppe peoples during the Bronze Age. These movements changed the genetic composition of the continent’s inhabitants, via admixture and population replacement processes. The Holocene was also characterized by major changes in vegetation composition, which altered the environment occupied by the original hunter-gatherer populations. Here, we use a combination of paleogenomics and geostatistical modelling to produce detailed maps of the movement of these populations over time and space, and to understand how these movements impacted the European vegetation landscape. We find that the dilution of hunter-gatherer ancestries and the Yamnaya steppe migration coincided with a reduction in the amount of broad-leaf forest and an increase in the amount of pasture lands in the continent. We also show that climate played a role in these vegetational changes. Additionally, we find that the spread of Neolithic farmer ancestry had a two-pronged wavefront, in agreement with similar findings based on patterns of the cultural spread of farming from radiocarbon-dated archaeological sites. With thousands of ancient genomes publicly available and in production, we foresee that the integration of ancient DNA with geostatistical techniques and large-scale archaeological datasets will revolutionize the study of ancient populations movements, and their effects on local fauna and flora.

scholarly journals The spatiotemporal spread of human migrations during the European Holocene

2020 ◽  
Vol 117 (16) ◽  
pp. 8989-9000 ◽  
Author(s):  
Fernando Racimo ◽  
Jessie Woodbridge ◽  
Ralph M. Fyfe ◽  
Martin Sikora ◽  
Karl-Göran Sjögren ◽  
...  
Keyword(s):  
Bronze Age ◽  
Vegetation Change ◽  
Strong Association ◽  
Local Fauna ◽  
Population Movements ◽  
European Continent ◽  
The Holocene ◽  
Natural Grasslands ◽  
Broad Leaf ◽  
Westward Movement

The European continent was subject to two major migrations of peoples during the Holocene: the northwestward movement of Anatolian farmer populations during the Neolithic and the westward movement of Yamnaya steppe peoples during the Bronze Age. These movements changed the genetic composition of the continent’s inhabitants. The Holocene was also characterized by major changes in vegetation composition, which altered the environment occupied by the original hunter-gatherer populations. We aim to test to what extent vegetation change through time is associated with changes in population composition as a consequence of these migrations, or with changes in climate. Using ancient DNA in combination with geostatistical techniques, we produce detailed maps of ancient population movements, which allow us to visualize how these migrations unfolded through time and space. We find that the spread of Neolithic farmer ancestry had a two-pronged wavefront, in agreement with similar findings on the cultural spread of farming from radiocarbon-dated archaeological sites. This movement, however, did not have a strong association with changes in the vegetational landscape. In contrast, the Yamnaya migration speed was at least twice as fast and coincided with a reduction in the amount of broad-leaf forest and an increase in the amount of pasture and natural grasslands in the continent. We demonstrate the utility of integrating ancient genomes with archaeometric datasets in a spatiotemporal statistical framework, which we foresee will enable future studies of ancient populations’ movements, and their putative effects on local fauna and flora.

What Does DNA Tell Us about Past Connections and the Settlement of Sahul?

2021 ◽  
Author(s):  
Elizabeth Matisoo-Smith ◽  
Anna L. Gosling
Keyword(s):  
Indigenous Peoples ◽  
Large Scale ◽  
Human Impacts ◽  
Genomic Research ◽  
Community Consultation ◽  
Sequencing Technology ◽  
Local Fauna ◽  
Population Replacement ◽  
Scale Population ◽  
Early Human

Archaeological evidence indicates that the continent of Sahul has been continuously settled for almost as long as modern humans have lived outside of Africa. The relative isolation of the continent, and the difficulty involved in getting there, have meant that the populations have not been subject to the large-scale population replacement seen in other parts of the world. Recent advances in DNA sequencing technology, including the ability to sequence full genomes in both ancient and modern populations, have revealed that the genomes of the Indigenous peoples of Australia and New Guinea, and the local fauna, can contribute significantly to our understanding of early human migrations from Africa, human impacts on environments, as well as human evolution more broadly. Given the power of genomic data, it is of the utmost importance that genomic research of ancient and modern samples is conducted ethically, with full community consultation and engagement at all stages.

scholarly journals Human mobility at Tell Atchana (Alalakh) during the 2nd millennium BC: integration of isotopic and genomic evidence

2020 ◽  
Author(s):  
Tara Ingman ◽  
Stefanie Eisenmann ◽  
Eirini Skourtanioti ◽  
Murat Akar ◽  
Jana Ilgner ◽  
...  
Keyword(s):  
Bronze Age ◽  
Ancient Dna ◽  
Large Scale ◽  
Near East ◽  
Eastern Mediterranean ◽  
Human Mobility ◽  
Isotope Data ◽  
Individual Mobility ◽  
Non Local ◽  
Trade And Exchange

AbstractThe Middle and Late Bronze Age Near East, a period roughly spanning the second millennium BC (ca. 2000-1200 BC), is frequently referred to as the first ‘international age’, characterized by intense and far-reaching contacts between different entities from the eastern Mediterranean to the Near East and beyond. In a large-scale tandem study of stable isotopes and ancient DNA of individuals excavated at Tell Atchana (Alalakh), situated in the northern Levant, we explore the role of mobility at the capital of a regional kingdom. We generated strontium isotope data for 53 individuals, oxygen isotope data for 77 individuals, and added ancient DNA data from 9 new individuals to a recently published dataset of 28 individuals. A dataset like this, from a single site in the Near East, is thus far unparalleled in terms of both its breadth and depth, providing the opportunity to simultaneously obtain an in-depth view of individual mobility and also broader demographic insights into the resident population. The DNA data reveals a very homogeneous gene pool, with only one outlier. This picture of an overwhelmingly local ancestry is consistent with the evidence of local upbringing in most of the individuals indicated by the isotopic data, where only five were found to be ‘non-local’. High levels of contact, trade, and exchange of ideas and goods in the Middle and Late Bronze Ages, therefore, seem not to have translated into high levels of individual mobility detectable at Tell Atchana.

scholarly journals Human mobility at Tell Atchana (Alalakh), Hatay, Turkey during the 2nd millennium BC: Integration of isotopic and genomic evidence

PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0241883
Author(s):  
Tara Ingman ◽  
Stefanie Eisenmann ◽  
Eirini Skourtanioti ◽  
Murat Akar ◽  
Jana Ilgner ◽  
...  
Keyword(s):  
Bronze Age ◽  
Ancient Dna ◽  
Large Scale ◽  
Near East ◽  
Eastern Mediterranean ◽  
Human Mobility ◽  
Dental Enamel ◽  
Late Bronze Age ◽  
Non Local ◽  
Trade And Exchange

The Middle and Late Bronze Age, a period roughly spanning the 2nd millennium BC (ca. 2000–1200 BC) in the Near East, is frequently referred to as the first ‘international age’, characterized by intense and far-reaching contacts between different entities from the eastern Mediterranean to the Near East and beyond. In a large-scale tandem study of stable isotopes and ancient DNA of individuals excavated at Tell Atchana (Alalakh, located in Hatay, Turkey), we explored the role of mobility at the capital of a regional kingdom, named Mukish during the Late Bronze Age, which spanned the Amuq Valley and some areas beyond. We generated strontium and oxygen isotope data from dental enamel for 53 individuals and 77 individuals, respectively, and added ancient DNA data of 10 newly sequenced individuals to a dataset of 27 individuals published in 2020. Additionally, we improved the DNA coverage of one individual from this 2020 dataset. The DNA data revealed a very homogeneous gene pool. This picture of an overwhelmingly local ancestry was consistent with the evidence of local upbringing in most of the individuals indicated by the isotopic data, where only five were found to be non-local. High levels of contact, trade, and exchange of ideas and goods in the Middle and Late Bronze Ages, therefore, seem not to have translated into high levels of individual mobility detectable at Tell Atchana.

scholarly journals Predicting sample success for large‐scale ancient DNA studies on marine mammals

2021 ◽  
Author(s):  
Xénia Keighley ◽  
Maiken Hemme Bro‐Jørgensen ◽  
Hans Ahlgren ◽  
Paul Szpak ◽  
Marta Maria Ciucani ◽  
...  
Keyword(s):  
Ancient Dna ◽  
Marine Mammals ◽  
Large Scale

scholarly journals Holocene vegetation, fire and land use dynamics at Lake Svityaz, an agriculturally marginal site in northwestern Ukraine

2021 ◽  
Author(s):  
Christoph Schwörer ◽  
Erika Gobet ◽  
Jacqueline F. N. van Leeuwen ◽  
Sarah Bögli ◽  
Rachel Imboden ◽  
...  
Keyword(s):  
Bronze Age ◽  
Human Impact ◽  
Central Europe ◽  
Large Scale ◽  
Mixed Forest ◽  
Fire Risk ◽  
Late Glacial ◽  
Future Climate Change ◽  
Agricultural Activity ◽  
Fire Dynamics

AbstractObserving natural vegetation dynamics over the entire Holocene is difficult in Central Europe, due to pervasive and increasing human disturbance since the Neolithic. One strategy to minimize this limitation is to select a study site in an area that is marginal for agricultural activity. Here, we present a new sediment record from Lake Svityaz in northwestern Ukraine. We have reconstructed regional and local vegetation and fire dynamics since the Late Glacial using pollen, spores, macrofossils and charcoal. Boreal forest composed of Pinus sylvestris and Betula with continental Larix decidua and Pinus cembra established in the region around 13,450 cal bp, replacing an open, steppic landscape. The first temperate tree to expand was Ulmus at 11,800 cal bp, followed by Quercus, Fraxinus excelsior, Tilia and Corylus ca. 1,000 years later. Fire activity was highest during the Early Holocene, when summer solar insolation reached its maximum. Carpinus betulus and Fagus sylvatica established at ca. 6,000 cal bp, coinciding with the first indicators of agricultural activity in the region and a transient climatic shift to cooler and moister conditions. Human impact on the vegetation remained initially very low, only increasing during the Bronze Age, at ca. 3,400 cal bp. Large-scale forest openings and the establishment of the present-day cultural landscape occurred only during the past 500 years. The persistence of highly diverse mixed forest under absent or low anthropogenic disturbance until the Early Middle Ages corroborates the role of human impact in the impoverishment of temperate forests elsewhere in Central Europe. The preservation or reestablishment of such diverse forests may mitigate future climate change impacts, specifically by lowering fire risk under warmer and drier conditions.

scholarly journals Monitoring Exotic Beetles with Inexpensive Attractants: A Case Study

Insects ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 462
Author(s):  
Enrico Ruzzier ◽  
Andrea Galli ◽  
Luciano Bani
Keyword(s):  
Native Species ◽  
Large Scale ◽  
Red Wine ◽  
Forest Type ◽  
Popillia Japonica ◽  
Complex Activity ◽  
Local Fauna ◽  
Apple Cider ◽  
Trap Placement

Detecting and monitoring exotic and invasive Coleoptera is a complex activity to implement, and citizen science projects can provide significant contributions to such plans. Bottle traps are successfully used in wildlife surveys and can also be adapted for monitoring alien species; however, a sustainable, large scale trapping plan must take into account the collateral catches of native species and thus minimize its impact on local fauna. In the present paper, we tested the use of bottles baited with standard food products that can be purchased in every supermarket and immediately used (apple cider vinegar, red wine, and 80% ethyl alcohol) in capturing exotic and invasive beetles in the area surrounding Malpensa Airport (Italy). In particular, we reduced the exposition type of the traps in each sampling round to three days in order to minimize native species collecting. We found a significant effect of the environmental covariates (trap placement, temperature, humidity, and forest type) in affecting the efficiency in catching target beetles. Nearly all invasive Nitidulidae and Scarabaeidae known to be present in the area were captured in the traps, with apple cider vinegar usually being the most effective attractant, especially for the invasive Popillia japonica.

Sustainable harvest or resource depression? Using ancient DNA to study the population dynamics of guanaco in western Argentina during the Holocene

2021 ◽  
Vol 129 ◽  
pp. 105355
Author(s):  
Cinthia Carolina Abbona ◽  
Gustavo Neme ◽  
Jeff Johnson ◽  
Adolfo Gil ◽  
Ricardo Villalba ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Ancient Dna ◽  
Sustainable Harvest ◽  
Resource Depression ◽  
The Holocene

scholarly journals A simple conceptual model to interpret the 100 000 years dynamics of paleo-climate records

2010 ◽  
Vol 17 (5) ◽  
pp. 585-592 ◽  
Author(s):  
C. S. Quiroga Lombard ◽  
P. Balenzuela ◽  
H. Braun ◽  
D. R. Chialvo
Keyword(s):  
Large Scale ◽  
Power Spectra ◽  
Greenland Ice Sheet ◽  
Ice Age ◽  
Solar Cycles ◽  
The Holocene ◽  
De Vries ◽  
Last Ice Age ◽  
Paleoclimate Records ◽  
Dominant Frequencies

Abstract. Spectral analyses performed on records of cosmogenic nuclides reveal a group of dominant spectral components during the Holocene period. Only a few of them are related to known solar cycles, i.e., the De Vries/Suess, Gleissberg and Hallstatt cycles. The origin of the others remains uncertain. On the other hand, time series of North Atlantic atmospheric/sea surface temperatures during the last ice age display the existence of repeated large-scale warming events, called Dansgaard-Oeschger (DO) events, spaced around multiples of 1470 years. The De Vries/Suess and Gleissberg cycles with periods close to 1470/7 (~210) and 1470/17 (~86.5) years have been proposed to explain these observations. In this work we found that a conceptual bistable model forced with the De Vries/Suess and Gleissberg cycles plus noise displays a group of dominant frequencies similar to those obtained in the Fourier spectra from paleo-climate during the Holocene. Moreover, we show that simply changing the noise amplitude in the model we obtain similar power spectra to those corresponding to GISP2 δ18O (Greenland Ice Sheet Project 2) during the last ice age. These results give a general dynamical framework which allows us to interpret the main characteristic of paleoclimate records from the last 100 000 years.

scholarly journals Alalakh: an account of the excavations at Tell Atchana in the Hatay, 1937–1949

2004 ◽  
Author(s):  
Leonard Woolley
Keyword(s):  
Bronze Age ◽  
Large Scale ◽  
River Valley ◽  
Early Bronze Age ◽  
Late Bronze Age ◽  
13Th Century ◽  
Gold Silver

This monograph describes large-scale excavations undertaken by Sir Leonard Woolley from 1937 to 1939, and again from 1946 to 1949, at the site of Alalakh (modern Tell Atchana) – a late Bronze Age city in the Amuq River valley of Turkey's Hatay Province. Described is the evidence of a series of superimposed palaces and temples, town defences, private houses and graves, in 17 archaeological levels reaching from late Early Bronze Age (Level XVII, c. 2200–2000 BC to Late Bronze Age (Level 0, 13th century BC). Supplementary reports describe the architecture and frescoes, sculptures, and portable objects in fired clay, gold, silver, ivory, stone, and glass.

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