scholarly journals Pip shape echoes grapevine domestication history

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Vincent Bonhomme ◽  
Sarah Ivorra ◽  
Thierry Lacombe ◽  
Allowen Evin ◽  
Isabel Figueiral ◽  
...  
Keyword(s):  
Middle Ages ◽  
Iron Age ◽  
Large Scale ◽  
Temporal Dynamics ◽  
Molecular Approaches ◽  
Late Iron Age ◽  
Archaeobotanical Remains ◽  
Spatio Temporal ◽  
Western Eurasia ◽  
Grape Varieties

AbstractThe pip, as the most common grapevine archaeological remain, is extensively used to document past viticulture dynamics. This paper uses state of the art morphological analyses to analyse the largest reference collection of modern pips to date, representative of the present-day diversity of the domesticated grapevine from Western Eurasia. We tested for a costructure between the form of the modern pips and the: destination use (table/wine), geographical origins, and populational labels obtained through two molecular approaches. Significant structuring is demonstrated for each of these cofactors and for the first time it is possible to infer properties of varieties without going through the parallel with modern varieties. These results provide a unique tool that can be applied to archaeological pips in order to reconstruct the spatio-temporal dynamics of grape diversity on a large scale and to better understand viticulture history. The models obtained were then used to infer the affiliations with archaeobotanical remains recovered in Mas de Vignoles XIV (Nîmes, France). The results show a twofold shift between the Late Iron Age and the Middle Ages, from table to wine grape varieties and from eastern to western origins which correlates with previous palaeogenomic results.

Formation and Land-Use History of Celtic Fields in North-West Europe – an Interdisciplinary Case Study at Zeijen, the Netherlands

2003 ◽  
Vol 6 (2) ◽  
pp. 141-173 ◽  
Author(s):  
Theo Spek ◽  
Willy Groenman-van Waateringe ◽  
Maja Kooistra ◽  
Lideweij Bakker
Keyword(s):  
Land Use ◽  
The Netherlands ◽  
Iron Age ◽  
Large Scale ◽  
Roman Period ◽  
Soil Tillage ◽  
North West ◽  
Late Iron Age ◽  
History Of

Celtic field research has so far been strongly focused on prospection and mapping. As a result of this there is a serious lack of knowledge of formation and land-use processes of these fields. This article describes a methodological case study in The Netherlands that may be applied to other European Celtic fields in the future. By interdisciplinary use of pedological, palynological and micromorphological research methods the authors were able to discern five development stages in the history of the field, dating from the late Bronze Age to the early Roman Period. There are strong indications that the earthen ridges, very typical for Celtic fields in the sandy landscapes of north-west Europe, were only formed in the later stages of Celtic field agriculture (late Iron Age and early Roman period). They were the result of a determined raising of the surface by large-scale transportation of soil material from the surroundings of the fields. Mainly the ridges were intensively cultivated and manured in the later stages of Celtic field cultivation. In the late Iron Age a remarkable shift in Celtic field agriculture took place from an extensive system with long fallow periods, a low level of manuring and extensive soil tillage to a more intensive system with shorter fallow periods, a more intensive soil tillage and a higher manuring intensity. There are also strong indications that rye (Secale cereale) was the main crop in the final stage of Celtic field agriculture.

scholarly journals medieval fisheries of Galicia (Northwestern Iberia): A preliminary archaeozoological overview

Archaeofauna ◽  
2021 ◽  
Vol 30 ◽  
pp. 155-165
Author(s):  
EUFRASIA ROSELLÓ-IZQUIERDO ◽  
EDUARDO GONZÁLEZ-GÓMEZ DE AGÜERO ◽  
CARLOS FERNÁNDEZ-RODRÍGUEZ ◽  
LAURA LLORENTE-RODRÍGUEZ ◽  
ARTURO MORALES-MUÑIZ
Keyword(s):  
Middle Ages ◽  
Iron Age ◽  
Fish Assemblages ◽  
Late Iron Age ◽  
Late Middle Ages ◽  
Critical Issues ◽  
Fish Remains ◽  
Coastal Deposits ◽  
Fishing Fleets ◽  
Two Kingdoms

The origin and development of the Iberian Medieval fisheries is a poorly documented phenomenon both from the standpoint of historical (documentary) and material (archaeological) evidence. Such dearth of knowledge can be explained in terms of proximal (i.e., a deficient retrieval of fish remains) and ultimate causes. Among the latter, the Muslim invasion, that lasted ca. 800 years of the “medieval millennium” in the Iberian Peninsula, needs to be taken into account as it probably delayed the development of fishing fleets within the Christian kingdoms for a substantial period of time. Be it as it may, the lack of knowledge does not allow one to explore a range of critical issues of Spanish and Portuguese history, such as the role played by the ever-expanding fishing fleets of Portugal and Castilla in the process of maritime discovery and colonization that these two kingdoms fostered by the end of the Middle Ages. In this paper, the results from a comparative analysis of selected fish assemblages from primary (i.e. coastal) deposits of the northern Iberian shores are presented. The aim is to check whether changes can be documented both at the level of (1) the range of species occurring in sites from the late Iron Age (Castreña culture, IV-I BC) to the Late Middle Ages (XV AD), and (2) the skeletal spectra of certain species that could reveal a differential processing of taxa meant for local consumption and those that appear in inland sites.

scholarly journals Arctic avian predators synchronise their spring migration with the northern progression of snowmelt

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Teja Curk ◽  
Ivan Pokrovsky ◽  
Nicolas Lecomte ◽  
Tomas Aarvak ◽  
David F. Brinker ◽  
...  
Keyword(s):  
Large Scale ◽  
Temporal Dynamics ◽  
The Arctic ◽  
Migratory Species ◽  
Migration Patterns ◽  
Predator Species ◽  
Movement Data ◽  
Breeding Grounds ◽  
Spatio Temporal ◽  
Spring Snowmelt

Abstract Migratory species display a range of migration patterns between irruptive (facultative) to regular (obligate), as a response to different predictability of resources. In the Arctic, snow directly influences resource availability. The causes and consequences of different migration patterns of migratory species as a response to the snow conditions remains however unexplored. Birds migrating to the Arctic are expected to follow the spring snowmelt to optimise their arrival time and select for snow-free areas to maximise prey encounter en-route. Based on large-scale movement data, we compared the migration patterns of three top predator species of the tundra in relation to the spatio-temporal dynamics of snow cover. The snowy owl, an irruptive migrant, the rough-legged buzzard, with an intermediary migration pattern, and the peregrine falcon as a regular migrant, all followed, as expected, the spring snowmelt during their migrations. However, the owl stayed ahead, the buzzard stayed on, and the falcon stayed behind the spatio-temporal peak in snowmelt. Although none of the species avoided snow-covered areas, they presumably used snow presence as a cue to time their arrival at their breeding grounds. We show the importance of environmental cues for species with different migration patterns.

scholarly journals Early alterations of large-scale brain networks temporal dynamics in young children with autism

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Aurélie Bochet ◽  
Holger Franz Sperdin ◽  
Tonia Anahi Rihs ◽  
Nada Kojovic ◽  
Martina Franchini ◽  
...  
Keyword(s):  
Large Scale ◽  
Developmental Stages ◽  
Temporal Dynamics ◽  
Brain Networks ◽  
Autism Spectrum ◽  
Brain Network ◽  
Clustering Methods ◽  
Early Developmental Stages ◽  
Spatio Temporal ◽  
Early Developmental

AbstractAutism spectrum disorders (ASD) are associated with disruption of large-scale brain network. Recently, we found that directed functional connectivity alterations of social brain networks are a core component of atypical brain development at early developmental stages in ASD. Here, we investigated the spatio-temporal dynamics of whole-brain neuronal networks at a subsecond scale in 113 toddlers and preschoolers (66 with ASD) using an EEG microstate approach. We first determined the predominant microstates using established clustering methods. We identified five predominant microstate (labeled as microstate classes A–E) with significant differences in the temporal dynamics of microstate class B between the groups in terms of increased appearance and prolonged duration. Using Markov chains, we found differences in the dynamic syntax between several maps in toddlers and preschoolers with ASD compared to their TD peers. Finally, exploratory analysis of brain–behavioral relationships within the ASD group suggested that the temporal dynamics of some maps were related to conditions comorbid to ASD during early developmental stages.

scholarly journals Spatio-Temporal Dynamics of Feed Grain Demand of Dairy Cows in China

2020 ◽  
Vol 12 (2) ◽  
pp. 663 ◽  
Author(s):  
Chao Yang Dong ◽  
Bei Bei Ma ◽  
Chun Xia LU
Keyword(s):  
Dairy Cows ◽  
Dairy Cow ◽  
Large Scale ◽  
Temporal Dynamics ◽  
Hot Spot ◽  
Market Environment ◽  
Relative Level ◽  
Resource Endowment ◽  
Spatio Temporal ◽  
Feeding Technology

As the income of urban and rural residents has increased in recent decades in China, dairy products have become an important part of the Chinese diet. Therefore, keeping up with the growing demand for feed grain for dairy cows is a critical issue of feed grain security. Utilizing traditional statistical and spatial statistical methods, this study analyzes the spatio-temporal dynamics of dairy cow feed grain (DCFG) demand on the provincial, regional, and national levels across China from 1990 to 2016. Additionally, this paper explores the impacts of various factors on the spatio-temporal dynamics of DCFG demand using the Geo-Detector method. The results demonstrate that: (1) the temporal dynamics of DCFG demand can be divided into three stages of slow growth, rapid growth, and high-level stability, and the relative level of DCFG demand in the whole animal husbandry tends to decline; (2) at the regional and national levels, the spatial concentration of high DCFG demand has intensified; in particular, North China was the region where the largest demand for DCFG was localized and was increasing at the highest rate; (3) based on the hot spot analysis of provincial DCFG demand, the high and low demand provinces of DCFG have sharp characteristic contrast from north to south China; (4) the spatio-temporal dynamics of DCFG demand in China were essentially co-affected by the four groups of factors (e.g., resource endowment, feeding scale, feeding technology, and market environment), of which resource endowment and feeding scale were the dominant factors. Therefore, in the future, dairy cow feeding in China should promote grain-saving feeding technology, improve the utilization of forage, expand large-scale feeding, and create a good market environment to ensure the reasonable development and sustainability of DCFG demand.

scholarly journals Millennial-scale faunal record reveals differential resilience of European large mammals to human impacts across the Holocene

2016 ◽  
Vol 283 (1827) ◽  
pp. 20152152 ◽  
Author(s):  
Jennifer J. Crees ◽  
Chris Carbone ◽  
Robert S. Sommer ◽  
Norbert Benecke ◽  
Samuel T. Turvey
Keyword(s):  
Large Scale ◽  
Temporal Dynamics ◽  
Human Impacts ◽  
Biodiversity Loss ◽  
Mammal Species ◽  
The Holocene ◽  
Range Change ◽  
Spatio Temporal ◽  
Patterns And Processes ◽  
Species Specific

The use of short-term indicators for understanding patterns and processes of biodiversity loss can mask longer-term faunal responses to human pressures. We use an extensive database of approximately 18 700 mammalian zooarchaeological records for the last 11 700 years across Europe to reconstruct spatio-temporal dynamics of Holocene range change for 15 large-bodied mammal species. European mammals experienced protracted, non-congruent range losses, with significant declines starting in some species approximately 3000 years ago and continuing to the present, and with the timing, duration and magnitude of declines varying individually between species. Some European mammals became globally extinct during the Holocene, whereas others experienced limited or no significant range change. These findings demonstrate the relatively early onset of prehistoric human impacts on postglacial biodiversity, and mirror species-specific patterns of mammalian extinction during the Late Pleistocene. Herbivores experienced significantly greater declines than carnivores, revealing an important historical extinction filter that informs our understanding of relative resilience and vulnerability to human pressures for different taxa. We highlight the importance of large-scale, long-term datasets for understanding complex protracted extinction processes, although the dynamic pattern of progressive faunal depletion of European mammal assemblages across the Holocene challenges easy identification of ‘static’ past baselines to inform current-day environmental management and restoration.

scholarly journals Spatio-temporal dynamics of dengue in Brazil: seasonal travelling waves and determinants of regional synchrony

2018 ◽  
Author(s):  
Mikhail Churakov ◽  
Christian J. Villabona-Arenas ◽  
Moritz U.G. Kraemer ◽  
Henrik Salje ◽  
Simon Cauchemez
Keyword(s):  
Large Scale ◽  
Temporal Dynamics ◽  
Mosquito Control ◽  
Human Mobility ◽  
Travelling Waves ◽  
Seasonal Pattern ◽  
Temporal Analysis ◽  
Vector Ecology ◽  
Spatio Temporal ◽  
Dengue Epidemics

AbstractDengue continues to be the most important vector-borne viral disease globally and in Brazil, where more than 1.4 million cases and over 500 deaths were reported in 2016. Mosquito control programmes and other interventions have not stopped the alarming trend of increasingly large epidemics in the past few years.Here, we analyzed monthly dengue cases reported in Brazil between 2001 and 2016 to better characterize the key drivers of dengue epidemics. Spatio-temporal analysis revealed recurring travelling waves of disease occurrence. Using wavelet methods, we characterised the average seasonal pattern of dengue in Brazil, which starts in the western states of Acre and Rondônia, then travels eastward to the coast before reaching the northeast of the country. Only two states in the north of Brazil (Roraima and Amapá) did not follow the countrywide pattern and had inconsistent timing of dengue epidemics throughout the study period.We also explored epidemic synchrony and timing of annual dengue cycles in Brazilian regions. Using gravity style models combined with climate factors, we showed that both human mobility and vector ecology contribute to spatial patterns of dengue occurrence.This study offers a characterization of the spatial dynamics of dengue in Brazil and its drivers, which could inform intervention strategies against dengue and other arboviruses.Author summaryIn this paper we studied the synchronization of dengue epidemics in Brazilian regions. We found that a typical dengue season in Brazil can be described as a wave travelling from the western part of the country towards the east, with the exception of the two most northern equatorial states that experienced inconsistent seasonality of dengue epidemics.We found that the spatial structure of dengue cases is driven by both climate and human mobility patterns. In particular, precipitation was the most important factor for the seasonality of dengue at finer spatial resolutions.Our findings increase our understanding of large scale dengue patterns and could be used to enhance national control programs against dengue and other arboviruses.

scholarly journals Video Question Answering via Hierarchical Spatio-Temporal Attention Networks

2017 ◽  
Author(s):  
Zhou Zhao ◽  
Qifan Yang ◽  
Deng Cai ◽  
Xiaofei He ◽  
Yueting Zhuang
Keyword(s):  
Visual Information ◽  
Large Scale ◽  
Question Answering ◽  
Temporal Dynamics ◽  
Temporal Attention ◽  
Attention Networks ◽  
Learning Framework ◽  
Spatio Temporal ◽  
The Given ◽  
Video Question Answering

Open-ended video question answering is a challenging problem in visual information retrieval, which automatically generates the natural language answer from the referenced video content according to the question. However, the existing visual question answering works only focus on the static image, which may be ineffectively applied to video question answering due to the temporal dynamics of video contents. In this paper, we consider the problem of open-ended video question answering from the viewpoint of spatio-temporal attentional encoder-decoder learning framework. We propose the hierarchical spatio-temporal attention network for learning the joint representation of the dynamic video contents according to the given question. We then develop the encoder-decoder learning method with reasoning recurrent neural networks for open-ended video question answering. We construct a large-scale video question answering dataset. The extensive experiments show the effectiveness of our method.

scholarly journals Karismatisk bergkrystall fra Ryfylkeheiane? Smykkestein som identitetsmarkør i yngre jernalder

Viking ◽  
2020 ◽  
Vol 83 (1) ◽  
Author(s):  
Astrid J. Nyland
Keyword(s):  
Iron Age ◽  
Large Scale ◽  
Raw Materials ◽  
Economic Value ◽  
Rock Crystal ◽  
Hydro Power ◽  
Late Iron Age ◽  
1960S And 1970S ◽  
The 1960S ◽  
Point Of Departure

In the 1960s and 1970s, large scale surveys related to hydro power developments in montane areas in Southwest Norway, recorded several rock crystals deposits and sites where crystals from these had been used both in the Stone Age and the Late Iron Age period. The Late Iron Age sites were interpreted as the first proof of locally produced rock crystal beads. In this article, I combine the production sites and rock crystal deposits to describe the operational chain of local bead production. This serves as the point of departure for a consideration of the value ascribed raw materials, local or regional vs. imported goods. I argue that symbolic aspects beyond economic value may have been the incentive for the local production, that is, qualities, such as rock crystals’ aesthetic, affective, or indeed charisma. Rock crystal beads from Late Iron Age graves in Rogaland are used as examples. 

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