Holocene最新文献_第9页

Vegetation changes and sediment dynamics in the Lake Alaotra region, central Madagascar 马达加斯加中部Alaotra湖地区的植被变化和泥沙动力学

IF 2.4 3区地球科学

Holocene Pub Date : 2022-12-23 DOI: 10.1177/09596836221145376

N. Broothaerts, V. F. Razanamahandry, Liesa Brosens, Benjamin Campforts, L. Jacobs, T. Razafimbelo, T. Rafolisy, G. Verstraeten, S. Bouillon, Gerard Govers

{"title":"Vegetation changes and sediment dynamics in the Lake Alaotra region, central Madagascar","authors":"N. Broothaerts, V. F. Razanamahandry, Liesa Brosens, Benjamin Campforts, L. Jacobs, T. Razafimbelo, T. Rafolisy, G. Verstraeten, S. Bouillon, Gerard Govers","doi":"10.1177/09596836221145376","DOIUrl":"https://doi.org/10.1177/09596836221145376","url":null,"abstract":"Madagascar is known for its high erosion rates in the central highlands, yet the role of human disturbance versus natural processes is not well understood and is a topic of ongoing debate. At present the necessary quantitative data to couple vegetation dynamics and sediment fluxes over time in Madagascar is scarce. This study aims to provide more insight in vegetation changes and sediment transfers over the last millennia in the Lake Alaotra region, and specifically on the role of human disturbances and natural processes. Our vegetation reconstruction is based on pollen records from two lake sediment cores, covering the last 2600 years. Sediment accumulation rates were calculated from cores obtained from the floodplains, from wetlands surrounding the lake, and from Lake Alaotra itself. Our data show an early opening in the landscape, between 2050 and 1700 cal a BP, with a transition from a wooded grassland or woodland/grassland mosaic towards open grassland and an increase in charcoal accumulation rates. (Indirect) human impact is suggested as the main driver for these vegetation changes. Floodplain and wetland sediment accumulation rates only increase in the last 1000 years and peak in the last 400 years. This increased accumulation can mainly be linked to the increased anthropogenic pressure (grazing and farming activities) that triggered increased lavaka (gullies) activity. No changes in accumulation rate were observed in Lake Alaotra, indicating that most sediments are buffered in the floodplains and wetlands. Overall, our pollen and charcoal data suggest an indirect effect of human disturbance on vegetation shifts whilst strong evidence was found for a direct effect of human disturbance on sediment accumulation through intensified use of the grasslands.","PeriodicalId":50402,"journal":{"name":"Holocene","volume":"33 1","pages":"459 - 470"},"PeriodicalIF":2.4,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47702021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Inter-annual and intra-annual tree-ring oxygen isotope signals in response to monsoon rainfall in northwestern Thailand 年际和年际树木年轮氧同位素信号对泰国西北部季风降雨的响应

IF 2.4 3区地球科学

Holocene Pub Date : 2022-12-21 DOI: 10.1177/09596836221138352

Sineenart Preechamart, N. Pumijumnong, A. Bräuning, C. Muangsong, B. Cai, S. Buajan

引用次数: 0

Local-scale environmental gradients in ‘snail-shell’ stable isotopes from Holocene Jordanian archaeological sites 全新世约旦考古遗址中“蜗牛壳”稳定同位素的局地尺度环境梯度

IF 2.4 3区地球科学

Holocene Pub Date : 2022-12-21 DOI: 10.1177/09596836221138345

H. Jenkins, J. Andrews, Y. Rowan, Alexander Wasse, T. White, G. Philip, A. Marca, J. Clarke

{"title":"Local-scale environmental gradients in ‘snail-shell’ stable isotopes from Holocene Jordanian archaeological sites","authors":"H. Jenkins, J. Andrews, Y. Rowan, Alexander Wasse, T. White, G. Philip, A. Marca, J. Clarke","doi":"10.1177/09596836221138345","DOIUrl":"https://doi.org/10.1177/09596836221138345","url":null,"abstract":"Reconstructing environments around archaeological sites is complicated by past land management practices and regional-scale climate proxies that can be contradictory and are often located at a distance from the sites themselves. Here we explore environmental information from fossil snail shells which, even when few in number on an archaeological site, may prove invaluable in constructing site-specific data. The palaeoecology of fossil snails and the stable isotopic composition of their shell carbonate can provide context-specific information on vegetation, water availability, and relative humidity during the occupation of a site. We studied terrestrial and aquatic snails from two later Neolithic archaeological sites in the Jordanian badia, Wadi al-Qattafi and Wisad Pools. At specific archaeological site-scale our study highlights the importance of aquatic snails in the reconstruction of semi-arid environments. At Wisad pools rare aquatic snails in contexts dating between ~8.0 and ~7.6 ka demonstrate episodes of wetness; moreover, their shell isotopic compositions indicate that local watercourses were well established, corroborating previous findings that during this period the immediate environs of Wisad Pools were host to C3 plant species more typical of the Mediterranean zone. Moreover, the δ18O signal in these snail shells allow tentative reconstruction of rainwater isotopic compositions and identify the effects of evaporation. Such fine-grained environmental information is much less evident from the terrestrial snail-shell data alone, showing that an ensemble of snail-shell data can be highly sensitive to environmental differentials across an archaeological site. Finally, at a regional palaeoclimate-scale our Wisad Pools snail-shell stable isotope data are consistent with a sustained, Rapid Climate Change (RCC)-driven wetness between 8.6 and 7.6 ka concurrent with cold and wet conditions in the wider Levant.","PeriodicalId":50402,"journal":{"name":"Holocene","volume":"33 1","pages":"255 - 266"},"PeriodicalIF":2.4,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44339869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling Holocene coastal ecosystem availability and site distribution patterns for Borikén, Puerto Rico 波多黎各Borikén全新世海岸生态系统可用性和场地分布模式建模

IF 2.4 3区地球科学

Holocene Pub Date : 2022-12-17 DOI: 10.1177/09596836221138348

Eric Rodríguez-Delgado, M. Rodríguez-Miranda, I. Rivera-Collazo

{"title":"Modeling Holocene coastal ecosystem availability and site distribution patterns for Borikén, Puerto Rico","authors":"Eric Rodríguez-Delgado, M. Rodríguez-Miranda, I. Rivera-Collazo","doi":"10.1177/09596836221138348","DOIUrl":"https://doi.org/10.1177/09596836221138348","url":null,"abstract":"Coasts are dynamic environments prone to the physical and social impacts of climate change. Examining the archaeological and environmental records of coastal areas can deepen our understanding of how humans respond to changing environmental conditions. In this article we consider how sea-level rise impacted coastal environments through time, and how these changes could pose opportunities or challenges to local indigenous populations. We present new findings of coastal zone transformations and past settlement patterns for Borikén, the largest island of the Puerto Rican archipelago, during the Holocene. We use paleogeographic modeling to reconstruct ecosystem availability for six discernible coastlines at 1000-year resolutions that accounts for past relative sea-level (RSL) heights and paleotidal ranges. We then compared ecosystem availability trends with the spatiotemporal distributions of available archaeological data to demonstrate the localized impacts of climate-related RSL rise across the island’s coastal ecosystems and suggest a consideration of habitat availability in past decision-making strategies. We observe a strong presence of Archaic Period sites in the island’s southwest coast where high coastal ecosystem availability and stability were present during this period. We also observe a significant expansion of intertidal ecosystems beginning at 3 kya for the north-central, north-eastern, south-central, and south-eastern coastlines that correspond to the appearance of materials associated with Early and Late Ceramic Periods cultures in these areas. This comparison of differential coastal transformations and site distributions conveys a deeper understanding of factors involved in past decision-making strategies and contributes to the emerging picture of human adaptations amidst changing environmental conditions.","PeriodicalId":50402,"journal":{"name":"Holocene","volume":"33 1","pages":"321 - 334"},"PeriodicalIF":2.4,"publicationDate":"2022-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45711933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Holocene book review: Meltdown: The Earth Without Glaciers 全新世书评:《融化:没有冰川的地球》

IF 2.4 3区地球科学

Holocene Pub Date : 2022-12-15 DOI: 10.1177/09596836221110312

引用次数: 0

The mid-6th century AD enigmatic mega earthquake and tsunami in central Greece: a seismotectonic, archeological, and historical reexamination 公元6世纪中期希腊中部神秘的大地震和海啸:地震构造、考古学和历史的重新审视

IF 2.4 3区地球科学

Holocene Pub Date : 2022-12-08 DOI: 10.1177/09596836221138330

G. Papadopoulos, I. Triantafyllou, Andromachi Vassilopoulou

{"title":"The mid-6th century AD enigmatic mega earthquake and tsunami in central Greece: a seismotectonic, archeological, and historical reexamination","authors":"G. Papadopoulos, I. Triantafyllou, Andromachi Vassilopoulou","doi":"10.1177/09596836221138330","DOIUrl":"https://doi.org/10.1177/09596836221138330","url":null,"abstract":"In AD 552 the area around the Gulf of Corinth, Central Greece, was reportedly hit by large destructive earthquakes. At the same time a tsunami supposedly hit Maliac Bay. The case calls for a realistic interpretation since earthquake scenarios failed to explain rationally the narration of the contemporary Byzantine historian Procopius, the only literary source. Scholars have some doubts about Procopius’ reliability since he frequently copied classical authors. We found impressive similarities between the texts of Procopius and those by classic authors regarding the 426 BC central Greece tsunamigenic earthquake. Very likely the AD 552 Maliac Bay tsunami is a fake event in mimic of the 426 BC one. Sixth-century seismic disasters in southern Greece, reported away from the Gulf of Corinth have been attributed as a deus ex machina to the AD 552 earthquake(s) due to the lack of supporting literary sources. After critical examination of the Procopius’ narration and of relevant geological, seismotectonic, and archeological evidence, we concluded with a scenario comprising two strong (magnitude ~6.5) earthquakes but without tsunami generation. The first earthquake perhaps happened in Boeotia, NE Corinth Gulf, as palaeoseismological evidence also indicates. The second earthquake, in Patras-Naupactus area, western Corinth Gulf, is supported by convincing archeological findings. However, seismic destruction horizons in southern Greece are interpreted by distinct sixth-century earthquakes independent from the Procopius’ ones.","PeriodicalId":50402,"journal":{"name":"Holocene","volume":"33 1","pages":"267 - 280"},"PeriodicalIF":2.4,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45061263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A centennial perspective on archeological research trends and contemporary needs for a vanishing Mississippi Delta 对消失的密西西比三角洲考古研究趋势和当代需求的百年展望

IF 2.4 3区地球科学

Holocene Pub Date : 2022-12-08 DOI: 10.1177/09596836221138328

Matthew R Helmer, E. Chamberlain, J. Mehta

引用次数: 2

Solving a ‘puzzle’. The global 4.2 ka Bond Event at El Mirador cave (Sierra de Atapuerca, Burgos, Spain) and the importance of small mammal taphonomy to the interpretation of past environments and their climatic controls 解决“难题”。全球4.2 El Mirador洞穴（Sierra de Atapuerca，Burgos，西班牙）的ka-Bond事件，以及小型哺乳动物对解释过去环境及其气候控制的重要性

IF 2.4 3区地球科学

Holocene Pub Date : 2022-12-07 DOI: 10.1177/09596836221138347

Sara García-Morato, D. Marin-Monfort, Sandra Bañuls-Cardona, G. Cuenca‐Bescós, J. Vergès, Y. Fernández-Jalvo

{"title":"Solving a ‘puzzle’. The global 4.2 ka Bond Event at El Mirador cave (Sierra de Atapuerca, Burgos, Spain) and the importance of small mammal taphonomy to the interpretation of past environments and their climatic controls","authors":"Sara García-Morato, D. Marin-Monfort, Sandra Bañuls-Cardona, G. Cuenca‐Bescós, J. Vergès, Y. Fernández-Jalvo","doi":"10.1177/09596836221138347","DOIUrl":"https://doi.org/10.1177/09596836221138347","url":null,"abstract":"The regional climatic context in which Chalcolithic (MIR5) and Bronze Age (MIR4) levels from El Mirador cave (Sierra de Atapuerca, Burgos, Spain) are framed is affected by the 4.2 ka cal. BP event, a global event defined as a cooling and aridification phase. Previous works based on palaeoenvironmental inferences indicate conflicting results regarding the possible impact of the event on vegetation and small mammals from MIR5. Pollen record illustrates a possible aridification episode that could match with the 4.2 ka cal. BP event, while the signal of this event is not clearly recorded in the small mammal assemblage, which indicates more humid environmental conditions than pollen record. Taphonomic analyses confirmed that the small mammal assemblages from MIR4 and MIR5 are the result of predation, supporting the involvement of European eagle owls (Bubo bubo) in its formation. This avian raptor shows a marked preference for hunting animals living in the more open and wetter parts of their hunting range. Likewise, spontaneous specialisation on abundant prey species could also be observed under certain environmental conditions. This characteristic behaviour of eagle owls may have provided the contradictory results observed between the small mammal assemblage and palynological evidence. Nonetheless, taphonomic analyses also provided information about climatic conditions and fluctuations along time. The low incidence of manganese coatings and carbonate crusts deposits in small mammal bone remains from MIR5 support the presence of arid conditions during the formation of this level, which agreed with the aridification phase probably related to the 4.2 ka Bond Event inferred by palynological data from MIR5. These results provided a more robust conclusion about the paleoenvironmental contexts during the formation of Chalcolithic and Bronze Age levels at El Mirador cave.","PeriodicalId":50402,"journal":{"name":"Holocene","volume":"33 1","pages":"296 - 309"},"PeriodicalIF":2.4,"publicationDate":"2022-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48816679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Synchronous change in the intensified millet cultivation and ecological environment from the early to middle Holocene on the Inner Mongolia Plateau, northern China 全新世早期至中期内蒙古高原谷子集约化栽培与生态环境的同步变化

IF 2.4 3区地球科学

Holocene Pub Date : 2022-12-07 DOI: 10.1177/09596836221138336

Keliang Zhao, Huiping Wei, Zhanhu Zhao, Yaping Zhang, Wenqing Liu, Jian Wang, Guanhan Chen, Hui Shen, Hua Du, Peng Cheng, Shan Chen, Peter Jia, Xinying Zhou, Xiaoqiang Li

{"title":"Synchronous change in the intensified millet cultivation and ecological environment from the early to middle Holocene on the Inner Mongolia Plateau, northern China","authors":"Keliang Zhao, Huiping Wei, Zhanhu Zhao, Yaping Zhang, Wenqing Liu, Jian Wang, Guanhan Chen, Hui Shen, Hua Du, Peng Cheng, Shan Chen, Peter Jia, Xinying Zhou, Xiaoqiang Li","doi":"10.1177/09596836221138336","DOIUrl":"https://doi.org/10.1177/09596836221138336","url":null,"abstract":"The mechanisms of the origin and dispersal of millet agriculture in northern China are poorly understood. We used plant macroremains, stable isotope compositions of human bone collagen, and pollen records from the Sitai site to reconstruct changes in subsistence strategies and their relationship with the ecological environment from the early to middle Holocene on the Inner Mongolian Plateau in northern China. Charred weed-like seeds, the bones of small mammals, eggshell fragments, together with microliths, indicate the practice of hunter-gatherer subsistence strategies during 10,500–10,200 cal yr BP. Deciduous broadleaved forest-steppe vegetation was present around the Sitai site during the early middle Holocene (8000–7000 cal yr BP). Additionally, isotopic compositions of human bones and plant remains reveal that millet agriculture and hunting-gathering appeared in the early middle Holocene. The spread of millet agriculture on the Inner Mongolian Plateau was likely favored by an increase in precipitation between 8000 and 7000 cal yr BP. The development of millet agriculture on the Inner Mongolia Plateau and the Loess Plateau was the prelude to its subsequent spread to the Tibet Plateau.","PeriodicalId":50402,"journal":{"name":"Holocene","volume":"33 1","pages":"347 - 354"},"PeriodicalIF":2.4,"publicationDate":"2022-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42792842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Reconstruction of cropland cover using historical literature in Northern China, Sui Dynasty, AD 609 利用历史文献重建隋朝北方耕地覆盖。公元609年

IF 2.4 3区地球科学

Holocene Pub Date : 2022-12-01 DOI: 10.1177/09596836221138329

Fahao Wang, Yu Ye, Chengpeng Zhang, X. Fang

{"title":"Reconstruction of cropland cover using historical literature in Northern China, Sui Dynasty, AD 609","authors":"Fahao Wang, Yu Ye, Chengpeng Zhang, X. Fang","doi":"10.1177/09596836221138329","DOIUrl":"https://doi.org/10.1177/09596836221138329","url":null,"abstract":"Reconstruction of historical cropland cover is not only essential for studying agricultural development in historical periods, but also provides the basic data for long-term global and climatic change simulations. However, reconstructing the amount and spatial distribution of cropland prior to the past millennium remains challenging because of incomplete data and the suitability of the allocation method. Based on the household census and cropland demand per household data, which was calculated from grain consumption per household and crop yield per unit area, this study estimated the prefecture-level cropland area in northern China in AD 609 during the Sui dynasty. Then, a cropland allocation model based on natural land suitability for cultivation was used to reconstruct the spatial distribution of cropland in 5′ × 5′ grid cells. The results were as follows: (1) the cropland area in northern China in AD 609 was 1.77 × 105 km2, with an average cropland area fraction of 10.04%. (2) The cropland was continuously distributed in the North China Plain, Guanzhong Plain, Fenhe Valley and central Shangdang and Changping on the Loess Plateau, resulting in a high cropland agglomeration area appearing in those regions. While it is scattered in the northern Loess Plateau and the Hexi Corridor. (3) Compared with our reconstruction, the HYDE dataset underestimated the cropland area in plains except for riverine areas and overestimated the cropland area in the hills and mountainous areas along the border. (4) This discrepancy was primarily derived from population differences and the divergent cropland allocation methods between the two datasets.","PeriodicalId":50402,"journal":{"name":"Holocene","volume":"33 1","pages":"310 - 320"},"PeriodicalIF":2.4,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44728419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1