The physical evolution and biocultural adaptation indicated by the human skeletons of Donghulin site, Beijing

2021 ◽  
Vol 21 (1) ◽  
pp. 184-192
Author(s):  
Jianing He ◽  
Chaohong Zhao ◽  
Jincheng Yu ◽  
Tianxing Cui ◽  
Tao Wang ◽  
...  
Keyword(s):  
Critical Period ◽  
Asian Population ◽  
Upper Paleolithic ◽  
Early Holocene ◽  
The North ◽  
Anthropological Study ◽  
Physical Transformation ◽  
Craniofacial Features ◽  
Reduced Mobility ◽  
Cross Section Geometry

Abstract Human remains recovered from the Donghulin site are key materials for the study of the physical evolution and biocultural adaptation of the North Chinese population during the early Holocene. Physical anthropological study of the skeletal remains of two Donghulin individuals shows that their craniofacial heterogeneity and diversity are comparable to that of the Upper Paleolithic population. Early Holocene is the critical period for the formation of the diagnostic craniofacial features of modern East Asian population. The dental macrowear, dental caries, and femoral midshaft diaphyseal cross section geometry suggest that the Donghulin people were undergoing a physical transformation attributable to reduced mobility and broad-spectrum diet, which is consistent with the Upper Paleolithic-Neolithic transition of lifestyle and subsistence strategy.

A multi-proxy reconstruction of climate during the late-Pleistocene to early Holocene transition in the northeastern, USA

2021 ◽  
pp. 1-17
Author(s):  
Laurie D. Grigg ◽  
Kevin J. Engle ◽  
Alison J. Smith ◽  
Bryan N. Shuman ◽  
Maximilian B. Mandl
Keyword(s):  
Late Pleistocene ◽  
Climatic Variability ◽  
Warming Trend ◽  
Early Holocene ◽  
Individual Species ◽  
Environmental Preferences ◽  
The North ◽  
Show Evidence ◽  
Dry Conditions ◽  
Components Analysis

Abstract A multiproxy record from Twin Ponds, VT, is used to reconstruct climatic variability during the late Pleistocene to early Holocene transition. Pollen, ostracodes, δ18O, and lithologic records from 13.5 to 9.0 cal ka BP are presented. Pollen- and ostracode-inferred climatic reconstructions are based on individual species’ environmental preferences and the modern analog technique. Principal components analysis of all proxies highlights the overall warming trend and centennial-scale climatic variability. During the Younger Dryas cooling event (YD), multiple proxies show evidence for cold winter conditions and increasing seasonality after 12.5 cal ka BP. The early Holocene shows an initial phase of rapid warming with a brief cold interval at 11.5 cal ka BP, followed by a more gradual warming; a cool, wet period from 11.2 to 10.8 cal ka BP; and cool, dry conditions from 10.8 to 10.2 cal ka BP. The record ends with steady warming and increasing moisture. Post-YD climatic variability has been observed at other sites in the northeastern United States and points to continued instability in the North Atlantic during the final phases of deglaciation.

New Evidence of the Late Neopleistocene Peopling of the Lower Ob Valley

2021 ◽  
Vol 49 (1) ◽  
pp. 9-20
Author(s):  
I. D. Zolnikov ◽  
A. A. Anoikin ◽  
E. A. Filatov ◽  
A. V. Vybornov ◽  
A. V. Vasiliev ◽  
...  
Keyword(s):  
Upper Paleolithic ◽  
The Arctic ◽  
Northern Eurasia ◽  
West Siberian Plain ◽  
Faunal Remains ◽  
Human Occupation ◽  
Large Area ◽  
Paleolithic Site ◽  
The North ◽  
Available Information

This study focuses on the early human occupation of the arctic part of the West Siberian Plain and introduces the finds at the Paleolithic site Kushevat (Shuryshkarsky District, Yamal-Nenets Autonomous Okrug), discovered in 2020. Geological and geomorphological characteristics of the Lower Ob region are provided, the chronology of the key Middle and Late Neopleistocene sequences is assessed, and criteria underlying the search for Paleolithic sites in the area are outlined. We describe the discovery and excavations at Kushevat, its stratigraphy and its faunal remains. On the basis of correlation with neighboring key Late Neopleistocene sections with a representative series of absolute dates, the age of the site is estimated at cal 50–35 ka BP. Results of a traceological study of a possibly human-modified reindeer antler are provided. Findings at Kushevat and the available information on the early peopling of northern Eurasia suggest that the boundary of the inhabited part of that region must be shifted ~200 km to the north. The Ob, therefore, is one of the last major Siberian rivers where traces of the Early Upper Paleolithic culture have been found. The discovery of a stratified site in its lower stretch is a milestone in the Paleolithic studies in the region. A large area over which faunal remains are distributed, and the presence of lithics among the surface finds, suggest that Kushevat is a highly prospective site for future archaeological studies of the early stages in the human peopling of the region.

scholarly journals Early Medieval Central Asian Population Estimates

2017 ◽  
Vol 60 (6) ◽  
pp. 788-817
Author(s):  
Étienne de la Vaissière
Keyword(s):  
Central Asia ◽  
Agricultural Land ◽  
Census Data ◽  
Asian Population ◽  
Population Estimates ◽  
Early Medieval ◽  
The North ◽  
Central Asian ◽  
The Individual

Abstract Census data from 8th-century Eastern Central Asian oases, combined with the measurements of the oases and data from archives discovered there, allow us to calculate estimates both of the individual oases’ populations and of their respective feeding capacities, which is to say the number of people who could be fed from the output of one hectare of agricultural land. These numbers in turn have parallels in Western Central Asia, where oasis sizes can also be calculated by examination of preserved archaeological landscapes and oasis walls. It is therefore possible to reach a rough idea of the populations dwelling in the main oases and valleys of sedentary Central Asia. As regards nomadic regions, the data are far more hypothetical, but references in certain sources to the sizes of nomad armies and rates of nomadic military levying can allow us to calculate at least the possible scales of magnitude for populations living to the north of the Tianshan.

scholarly journals Simulating the Early Holocene demise of the Laurentide Ice Sheet with BISICLES (public trunk revision 3298)

2020 ◽  
Vol 13 (9) ◽  
pp. 4555-4577
Author(s):  
Ilkka S. O. Matero ◽  
Lauren J. Gregoire ◽  
Ruza F. Ivanovic
Keyword(s):  
Mass Balance ◽  
General Circulation ◽  
Ice Sheet ◽  
Circulation Model ◽  
Early Holocene ◽  
Laurentide Ice Sheet ◽  
Hudson Bay ◽  
Surface Mass Balance ◽  
Surface Mass ◽  
The North

Abstract. Simulating the demise of the Laurentide Ice Sheet covering Hudson Bay in the Early Holocene (10–7 ka) is important for understanding the role of accelerated changes in ice sheet topography and melt in the 8.2 ka event, a century long cooling of the Northern Hemisphere by several degrees. Freshwater released from the ice sheet through a surface mass balance instability (known as the saddle collapse) has been suggested as a major forcing for the 8.2 ka event, but the temporal evolution of this pulse has not been constrained. Dynamical ice loss and marine interactions could have significantly accelerated the ice sheet demise, but simulating such processes requires computationally expensive models that are difficult to configure and are often impractical for simulating past ice sheets. Here, we developed an ice sheet model setup for studying the Laurentide Ice Sheet's Hudson Bay saddle collapse and the associated meltwater pulse in unprecedented detail using the BISICLES ice sheet model, an efficient marine ice sheet model of the latest generation which is capable of refinement to kilometre-scale resolutions and higher-order ice flow physics. The setup draws on previous efforts to model the deglaciation of the North American Ice Sheet for initialising the ice sheet temperature, recent ice sheet reconstructions for developing the topography of the region and ice sheet, and output from a general circulation model for a representation of the climatic forcing. The modelled deglaciation is in agreement with the reconstructed extent of the ice sheet, and the associated meltwater pulse has realistic timing. Furthermore, the peak magnitude of the modelled meltwater equivalent (0.07–0.13 Sv) is compatible with geological estimates of freshwater discharge through the Hudson Strait. The results demonstrate that while improved representations of the glacial dynamics and marine interactions are key for correctly simulating the pattern of Early Holocene ice sheet retreat, surface mass balance introduces by far the most uncertainty. The new model configuration presented here provides future opportunities to quantify the range of plausible amplitudes and durations of a Hudson Bay ice saddle collapse meltwater pulse and its role in forcing the 8.2 ka event.

scholarly journals Holocene climate variability in the North-Western Mediterranean Sea (Gulf of Lions)

2016 ◽  
Vol 12 (1) ◽  
pp. 91-101 ◽  
Author(s):  
B. Jalali ◽  
M.-A. Sicre ◽  
M.-A. Bassetti ◽  
N. Kallel
Keyword(s):  
Mediterranean Sea ◽  
Western Mediterranean ◽  
Early Holocene ◽  
Inner Shelf ◽  
Catchment Basin ◽  
Rhône River ◽  
Gulf Of Lions ◽  
The North ◽  
Western Mediterranean Sea ◽  
Rhone River

Abstract. Sea surface temperatures (SSTs) and land-derived input time series were generated from the Gulf of Lions inner-shelf sediments (NW Mediterranean Sea) using alkenones and high-molecular-weight odd-carbon numbered n-alkanes (TERR-alkanes), respectively. The SST record depicts three main phases: a warm Early Holocene ( ∼  18 ± 0.4  °C) followed by a cooling of  ∼  3  °C between 7000 and 1000 BP, and rapid warming from  ∼  1850 AD onwards. Several superimposed multi-decadal to centennial-scale cold events of  ∼  1  °C amplitude were also identified. TERR-alkanes were quantified in the same sedimentary horizons to identify periods of high Rhone River discharge and compare them with regional flood reconstructions. Concentrations show a broad increase from the Early Holocene towards the present with a pronounced minimum around 2500 BP and large fluctuations during the Late Holocene. Comparison with Holocene flood activity reconstructions across the Alps region suggests that sediments of the inner shelf originate mainly from the Upper Rhone River catchment basin and that they are primarily delivered during positive North Atlantic Oscillation (NAO).

Bite marks on early Holocene Tursiops truncatus fossils from the North Sea indicate scavenging by rays (Chondrichthyes, Rajidae)

2009 ◽  
Vol 88 (3) ◽  
pp. 169-175
Author(s):  
H.H. van Netten ◽  
J.W.F. Reumer
Keyword(s):  
Natural History ◽  
North Sea ◽  
Tursiops Truncatus ◽  
Marine Mammals ◽  
Real Life ◽  
Early Holocene ◽  
History Museum ◽  
Bite Marks ◽  
The North ◽  
The North Sea

AbstractA number of Tursiops truncatus mandibles in the collection of fossil marine mammals in the Rotterdam Natural History Museum have marks consisting of several parallel linear grooves. These marks are also found on four atlas complexes, a scapula and on one vertebra. The hypothesis that they are bite marks and were caused by scavenging rays (Rajidae, Chondrichthyes) was tested with a real-life experiment using different shark and ray species, allowing them to scavenge on cow ribs as proxies for the dolphin bones. The bite marks of these animals were compared with the fossil marks and show that the fossil marks are most likely caused by scavenging rays.

scholarly journals Haff disease in the pandemic COVID-19 period in Brazil

2021 ◽  
Vol 10 (14) ◽  
pp. e358101422175
Author(s):  
Gabriella de Almeida Campos ◽  
Sabrina Jurema da Rocha Dantas ◽  
Emanuel Guilherme de Almeida Carvalho ◽  
Rafael Vinicius de Almeida Tabosa ◽  
Elvys Blayne Sales de Souza ◽  
...  
Keyword(s):  
Critical Period ◽  
Coastal Region ◽  
Cross Sectional Study ◽  
Complete Understanding ◽  
Strategic Information ◽  
Cross Sectional ◽  
The North ◽  
Public Data ◽  
Haff Disease

Objective: This study describes and characterize the cases of Haff disease reported in Brazil during the COVID-19 pandemic period. Descriptive and cross-sectional study using public data from the National Center for Strategic Information and Response in Health Surveillance nacional. The Risk Communication number 17 of 09/15/2021 was accessed. The description of suspected cases was extended to all Brazilian states where notifications occurred, from January 1, 2020, to September 15, 2021. There was an increase in cases of Haff's disease in Brazil, from 2020 onwards, with 46 in the Northeast region of Brazil. Eighty-five cases and three deaths were reported between January and September 2021 in the North, Northeast, South and Midwest regions. Most cases occurred in regions of greater heat such as the coastal region of the Northeast and around regions of the Amazon River Basin. A critical period for coping with the SARS-CoV-2 virus pandemic in Brazil, cases of disease of Haff could be reported in various regions of country. Despite the etiological suspicions, studies, and follow-up of the cases, it is still not possible to affirm that the disease is caused by biomolecules of the Palytoxin-Like Toxins group. The possible identification of the responsible toxin(s) will be essential for a complete understanding of the etiopathogenic mechanism of the disease and adequate development of prevention, treatment, and cure measures.

scholarly journals El Mirón Cave and the 14C Chronology of Cantabrian Spain

Radiocarbon ◽  
2003 ◽  
Vol 45 (1) ◽  
pp. 41-58 ◽  
Author(s):  
Lawrence Guy Straus ◽  
Manuel González Morales
Keyword(s):  
Bronze Age ◽  
Upper Paleolithic ◽  
Early Holocene ◽  
Northern Spain ◽  
Roof Fall ◽  
Early Upper Paleolithic ◽  
Relationship Of ◽  
Early Upper

Excavations since 1996 in the large El Mirón Cave in the Cantabrian Cordillera of northern Spain have revealed a cultural sequence of late Mousterian, early Upper Paleolithic, Solutrean, Magdalenian, Azilian, Mesolithic, Neolithic, Chalcolithic, Bronze Age, and Medieval occupations. These components have been dated by 51 generally coherent radiocarbon determinations, all run by the Geochron labs, in association with the Lawrence Livermore labs for AMS. This series is one of the largest for a single prehistoric site in Iberia or even Europe. The series is consistent with the record from Cantabrian Spain and provides new detail on the age of the Middle–Upper Paleolithic transition, on the various phases of the Magdalenian culture, on the appearance of the Neolithic in the Atlantic zone of Spain, and on the origins of the socioeconomic complexity in the metal ages. The stratigraphic relationship of 14C-dated levels to a roof-fall block and adjacent cave walls (both with engravings) provides rare terminus post and ante quem ages for execution of the rupestral art in El Mirón during the early to mid Magdalenian. The 14C record has also been instrumental in revealing the existence of depositional hiati during the early Holocene.

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