Quaternary International最新文献

{"title":"Cold and arid climates experienced by Central European hunter-gatherers at Stránská skála IV during the Last Glacial Maximum","authors":"Rhiannon E. Stevens ,&nbsp;Hazel Reade ,&nbsp;Alexander J.E. Pryor ,&nbsp;Kerry L. Sayle ,&nbsp;Jennifer A. Tripp ,&nbsp;Petr Neruda ,&nbsp;Zdeňka Nerudová ,&nbsp;Martina Roblíčková ,&nbsp;Thomas Higham ,&nbsp;Jiří Svoboda","doi":"10.1016/j.quaint.2025.109893","DOIUrl":"10.1016/j.quaint.2025.109893","url":null,"abstract":"<div><div>Several studies have argued that human presence in Central Europe during the Last Glacial Maximum (LGM) may have been restricted to brief periods of climate warming. In particular, Greenland Interstadial-2 (GI-2, c.23,300–22,800 BP), a brief warm event recorded in Greenland ice-core stratigraphy, has been associated with human activity at Central European sites such as Kastelhöhle-Nord and Y-Höhle (Switzerland), and Kammern-Grubgraben (Austria). The Epigravettian open air site of Stránská skála IV, a specialized horse hunting site located in Moravia (Czech Republic), purportedly provides further evidence in support of this hypothesis. However, published radiocarbon dates from Stránská skála IV have age ranges too broad for evaluating the relationship between the chronology of occupation and Greenland ice core stratigraphy events, and low pollen abundance at the site means pollen analysis is an uncertain indicator of climatic conditions. Through a new program of radiocarbon dating and stable isotope analysis of the hunted horse remains from Stránská skála IV, we refine the chronology of the site and provide new insights into environmental conditions during human occupation. Bayesian modelling of seven new ultra-filtered AMS dates moves the timing of site occupation back from 22.8 to 21.1 ka cal. BP to 24.1–23.0 ka cal. BP, indicating that site use occurred prior to GI-2. Stable carbon, nitrogen and sulfur bone collagen isotope results suggest that conditions were cool and arid with an open landscape. Tooth enamel oxygen isotope data indicate mean annual air temperatures of 1.2°C (±3.5°C), consistent with climate-modelled temperature estimates for the region during the LGM. Together these data point to human occupation of the site during pronounced cold conditions characterized by temperatures ∼8.5°C below the present-day average. Our results demonstrate that human presence in central Europe during the LGM was not confined to brief warm events, adding to a growing body of evidence that early humans could tolerate more extreme climate conditions than previously thought. Perhaps, at certain times in prehistory climate played a less deterministic role in human distribution than is often assumed.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"741 ","pages":"Article 109893"},"PeriodicalIF":1.9,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518806","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}

{"title":"Source-to-sink process of sediments in the central muddy area of the south Yellow Sea since the middle MIS 3","authors":"Liyan Wang ,&nbsp;Guangxue Li","doi":"10.1016/j.quaint.2025.109903","DOIUrl":"10.1016/j.quaint.2025.109903","url":null,"abstract":"<div><div>Identifying sediment sources in the continental shelf muddy area provides a critical foundation for elucidating source-to-sink processes. This study investigates the sediment provenance of core YS01 from the western Central Yellow Sea Mud (CYSM) to reconstruct the source-to-sink processes in the South Yellow Sea (SYS) since the middle MIS 3. Clay mineral assemblages and Sr-Nd isotope compositions reveal that the Yellow River and Yangtze River are the dominant sediment sources in the study area since the middle marine isotope stages (MIS) 3. Mixed detrital sediments from these two rivers were identified in the strata deposited during the 8.3–0.3 ka (mid-late MIS 1) and 42.6–31.4 ka (mid-late MIS 3), closely linked to nearshore seafloor erosion driven by the East Asian Winter Monsoon (EAWM). The key distinction between these two periods lies in the weakened intensity of the East Asian Summer Monsoon (EASM) intensity during the mid-late MIS1, which significantly reduced the contribution of Yangtze River-derived suspended sediments to the study area in summer. In contrast, during the 12.0–10.9 ka (early MIS 1), the suspended sediment from the Yangtze River in summer became the dominant sediment source, transported to the study area by the northward-flowing Yellow Sea Coastal Current (YSCC) and the Changjiang Diluted Water (CDW), both influenced by the intensified EASM. In general, source-to-sink processes in the SYS since the middle MIS 3 are predominantly controlled by the East Asian Monsoon.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"742 ","pages":"Article 109903"},"PeriodicalIF":1.9,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144514167","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}

{"title":"Multiproxy-proxy investigation of a unique Bronze Age deposit of broomcorn millet and human remains at a bog site in Bohemia, Czech Republic","authors":"Dagmar Dreslerová ,&nbsp;Daniel Vondrák ,&nbsp;Jan Hošek ,&nbsp;Veronika Brychová ,&nbsp;Harriet Hunt ,&nbsp;Petr Pokorný","doi":"10.1016/j.quaint.2025.109898","DOIUrl":"10.1016/j.quaint.2025.109898","url":null,"abstract":"<div><div>The deposition of broomcorn millet plants (<em>Panicum miliaceum</em>), found in the wetland of the Zahájí site in the Czech Republic, belongs to the oldest millet findings in Central Europe. Its appearance in a newly formed shallow lake in a small brook valley located in the populated lowland area was accompanied by a curious finding of a human fingernail (both dated ca. 1400-1300 BC); their joint presence in the same layer does not appear accidental. Although a wealth of contextual information has been gleaned from multi-proxy investigations (such as sediment lithostratigraphy, geo and water chemistry, pollen, plant macrofossils, aquatic invertebrae and organic residua analyses, and aDNA of millet and the fingernail), archaeological interpretation of the find is highly challenging having no known analogies in the European/wider context so far. We present some possible scenarios of what might have happened, including certain forms of ritual behaviour or reverence for millet, a crop that has only recently spread in central Europe around the mid-2nd millennium BC following its rapid westward migration from southeastern Asia.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"741 ","pages":"Article 109898"},"PeriodicalIF":1.9,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144513778","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}

{"title":"Forest transformation and human impact in pearl river delta, south China, during the last 6000 cal yr BP","authors":"Huanhuan Peng ,&nbsp;Xiaodong Tan ,&nbsp;Jinhui Wei ,&nbsp;Zhuo Zheng ,&nbsp;Kangyou Huang","doi":"10.1016/j.quaint.2025.109895","DOIUrl":"10.1016/j.quaint.2025.109895","url":null,"abstract":"<div><div>Despite numerous Holocene studies in the Pearl River Delta (PRD), extensive, high-resolution investigations of peatlands containing buried ancient <em>Glyptostrobus</em> forests remain limited, hindering a full understanding of vegetation evolution and human activity there. This study, conducted in a wood-rich peatland within PRD of South China, utilized magnetic susceptibility, humification, pollen, and microcharcoal indicators to elucidate substantial environmental and vegetational shifts over the last 6000 cal yr BP, capturing the entire process of wetland formation, development, and disappearance, as well as vegetation transitions from dense forests to open habitats. The <em>Glyptostrobus</em> forests initially developed around 5000 cal yr BP and thrived between 4100 and 2800 cal yr BP. This period coincided with the expansion of freshwater wetlands in the PRD, as strong monsoon-driven freshwater discharge progressively advanced the shoreline seaward, creating numerous freshwater wetlands in the lower reaches of the Pearl River. These newly formed wetlands provided suitable habitats for <em>Glyptostrobus</em> to thrive. Concurrently, the relatively strong Asian Summer Monsoon maintained a warm and wet climate, which was conducive to the prosperity of <em>Glyptostrobus</em> forests. Agricultural activities were identified as the main driver in the degradation and ultimate disappearance of natural <em>Glyptostrobus</em> forest after 3000 cal yr BP. Our findings suggesting primary human activities dating back to approximately 3500 cal yr BP ago, with intensive impacts on local vegetation by 2800 cal yr BP. This research provides crucial evidence for understanding palaeoecosystem‌ changes in the context of deltaic evolution and human activities in this densely populated region.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"742 ","pages":"Article 109895"},"PeriodicalIF":1.9,"publicationDate":"2025-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144511035","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}

{"title":"Late glacial and Holocene climate records from the Southern Hemisphere","authors":"Julieta Massaferro,&nbsp;Christoph Mayr,&nbsp;Nicolas Waldmann","doi":"10.1016/j.quaint.2025.109892","DOIUrl":"10.1016/j.quaint.2025.109892","url":null,"abstract":"","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"741 ","pages":"Article 109892"},"PeriodicalIF":1.9,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144490368","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}

{"title":"Effects of Lateglacial and Holocene climate change on southern Baltic environments: a plant sedaDNA and diatom sediment record","authors":"Laura Gedminienė ,&nbsp;Kathleen R. Stoof-Leichsenring ,&nbsp;Ulrike Herzschuh ,&nbsp;Giedrė Vaikutienė ,&nbsp;Miglė Stančikaitė ,&nbsp;Žana Skuratovič ,&nbsp;Domas Uogintas ,&nbsp;Andrej Spiridonov","doi":"10.1016/j.quaint.2025.109899","DOIUrl":"10.1016/j.quaint.2025.109899","url":null,"abstract":"<div><div>We combined multiproxy analyses of plant sedaDNA, diatom, and lithological data from two sediment cores to develop an uninterrupted Lateglacial and Holocene record from the Dūkštelis palaeolake, eastern Lithuania, and compared our findings to published pollen records. SedaDNA provides localised and taxonomically detailed insights into vegetation, surpassing the resolution of pollen data; however, its composition is strongly influenced by aquatic plants, a fact which limits the representation of terrestrial flora to some extent. Macrophyte sedaDNA and diatom data record shifts in lake productivity and water levels, while pollen data reflect a broader regional vegetation context, highlighting the complementarity of these methods.</div><div>Subalpine and lowland vegetation colonised the region during the Lateglacial. The presence of shrub taxa, like <em>Arctostaphylos uva-ursi</em> and <em>Arctous alpina</em> with colder-adapted species, like Dryadoideae and <em>Pyrola</em>, and herbs characteristic of lowlands in modern environments, like Trifoliaceae, <em>Mentheae</em>, Ranunculaceae, and <em>Plantago</em>, suggests an open but heterogenous environment with diverse microhabitats created under quickly changing geomorphological conditions. A gradual shift to a forested landscape began with the advent of riparian species like <em>Alnus</em> (∼11300 cal yr BP), <em>Viburnum</em> (∼10300–9200 cal yr BP), and deciduous trees including Ulmaceae, <em>Tilia,</em> and Fagaceae from ∼11150, 10000, and 9900 cal yr BP, respectively. Early to Middle Holocene diatom and macrophyte data show that by ∼10000 cal yr BP, the lake had shifted from a shallow mesotrophic-eutrophic state to a deeper eutrophic system. During the Middle to Late Holocene, sedaDNA data suggest a decline in forest vegetation as the lake evolved into a shallow wetland. At this stage, sedaDNA overrepresents species growing directly in and around the lake, and therefore potentially skewing the broader regional picture. In contrast, pollen data suggest a pronounced forest decline from ∼3300 cal yr BP, likely linked to human activities such as forest clearance, which would increasingly shape the landscape from the Middle Holocene. Notable agricultural and pastoral impacts are indicated by the presence of species such as <em>Avena</em>, Brassicaceae, Plantago, and <em>Trifolium</em> starting ∼3700 cal yr BP.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"741 ","pages":"Article 109899"},"PeriodicalIF":1.9,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144502626","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}

{"title":"Late Quaternary fluvio-aeolian interactions and possible aridification in west-central India: Implications for prehistoric human adaptations in the Central Tapi Valley","authors":"Sourav Mukhopadhyay ,&nbsp;Pratik Pandey ,&nbsp;Prabhin Sukumaran ,&nbsp;Binita Phartiyal ,&nbsp;Swati Verma ,&nbsp;Varun Vyas ,&nbsp;Navashni Naidoo ,&nbsp;Avantika Binani ,&nbsp;Jessica L. Conroy ,&nbsp;Parth R. Chauhan","doi":"10.1016/j.quaint.2025.109878","DOIUrl":"10.1016/j.quaint.2025.109878","url":null,"abstract":"<div><div>The Central Tapi Valley in India presents a unique opportunity to study Late Quaternary environmental changes, with a particular focus on fluvio-aeolian interactions, aridification, and their implications for human adaptation. To reconstruct the sedimentary history, we used a multi-proxy approach using microstructural analysis of quartz grains, grain size distribution and magnetic susceptibility. Our findings reveal a two-phase depositional process: fluvial processes dominate the upper layers (Phase 1), while aeolian influences characterize the lower layers (Phase 2), suggesting seasonal wind variations and episodic aridification in the region. In the magnetic susceptibility data, Phase 1 is characterized by ferrimagnetic minerals linked to increased pedogenesis and intensified Indian Summer Monsoon activity, and Phase 2, dominated by antiferromagnetic minerals, is indicative of aeolian processes and drier conditions. These findings underscore the broader patterns of intercontinental aridification, extending into central India and influencing human habitation and adaptation strategies during this period. Hence, this study contributes to the understanding of the Late Quaternary landscape transformations and provides valuable insights into how climate variability and environmental stressors shaped human adaptation in West-Central India, and demonstrates the potential to enhance the understanding of intercontinental aridification and dustiness in central India, reaching beyond the Himalayan and Thar Desert zones.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"739 ","pages":"Article 109878"},"PeriodicalIF":1.9,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144491466","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}

{"title":"Subsistence economic changes and their influencing factors in the lower Yangtze river region during 11,000–2,300 BP: archaeobotanical and zooarchaeological evidence","authors":"Haiming Li ,&nbsp;Zeli Wang ,&nbsp;Yingyu Qian ,&nbsp;Haijiang Ning ,&nbsp;Qingbo Hu ,&nbsp;Nathaniel James ,&nbsp;Xin Jia","doi":"10.1016/j.quaint.2025.109891","DOIUrl":"10.1016/j.quaint.2025.109891","url":null,"abstract":"<div><div>The Lower Yangtze River Region (LYRR), is one of the oldest centers of rice agriculture in the world, though the long-term trajectory of this subsistence system and the environmental and cultural factors that influenced the trajectory remain to be fully elucidated. Drawing on published archaeobotanical and zooarchaeological evidence from 76 archaeological sites, this paper integrates paleoclimatic, paleoenvironmental, and other archaeological data, providing an overview of the trajectory of LYRR subsistence economies between 11,000–2300 BP. The integrated data indicates that between 11,000–6000 BP in LYRR, subsistence practices were mainly based on gathering, hunting and fishing, supplemented by rice cultivation during its incipient domestication. Between 6000–4000 BP a shift to rice agricultural production and animal husbandry took place, supplemented by gathering, hunting, and fishing. By 4000–2300 this subsistence system transformed into a diversified agricultural and hunting economy, supplemented by gathering, animal husbandry and fishing. Multiple environmental and social factors such as topography, landforms, climate, sea level fluctuations and population increase have jointly influenced the formation of subsistence economy in various periods of past LYRR peoples. Between 11,000–6000 BP the warm and humid climate and the geographical environment heavily influenced LYRR subsistence. Between 6000–4000 BP, a combination of the warm and humid climate, slowing sea level rise, the formation of the Yangtze River Delta, population growth, and shared belief systems were the primary influences on subsistence economies. By 4000–2300 BP, a colder-drier climate, and local geomorphological environments played a dominant role in the formation of a diversified subsistence economy.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"740 ","pages":"Article 109891"},"PeriodicalIF":1.9,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144481296","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}

{"title":"Tracing the southward spread of Millets: Archaeobotanical evidence from the late Neolithic Zhaizishan site in the middle Han River valley, central China","authors":"Mengwei Li ,&nbsp;Ling Yao ,&nbsp;Yuzhang Yang ,&nbsp;Chengqiu Lu ,&nbsp;Xin Zhou","doi":"10.1016/j.quaint.2025.109890","DOIUrl":"10.1016/j.quaint.2025.109890","url":null,"abstract":"<div><div>The southward spread of millets is one of the current hotspots of Chinese archaeological research. The entry of millets into the Jianghan Plain likely followed three routes, with the Han River corridor, linking the Nanyang Basin to the Jianghan Plain, being particularly significant. However, this prevalent hypothesis still requires robust archaeobotanical evidence to support it. At the Zhaizishan site, located at the southern end of Han River corridor, flotation analysis identified rice (<em>Oryza sativa</em>), foxtail millet (<em>Setaria italica</em>) and broomcorn millet (<em>Panicum miliaceum</em>), along with 14 types of non-crop remains. The analysis indicated that during the Youziling culture period (5800–5300 BP), millets were already present near the Jianghan Plain but less prominent within the crop assemblage. However, its significance increased during the Qujialing culture period (5300–4500 BP), although rice continued to be dominant. During the Shijiahe culture period (4500–4200 BP), the importance of millets may have further increased. The discovery of millets at the Zhaizishan site during the Youziling culture period strongly supports the theory that the Han River corridor served as a route for the southward spread of millets, no later than 5300 years ago. In addition, by comparing crop structures at the Zhaizishan and Qujialing sites, we found that natural and cultural factors both contributed to the increasing importance of millets within the agricultural system. Additionally, the sloped terrain would have driven ancient humans to cultivate more millet. This study is of great significance for exploring the spatiotemporal processes of the southward spread of millets and the impacts of millets on the Neolithic crop structure in the middle Yangtze River region, as well as the complex relationships among the natural conditions, archaeological cultures, and prehistoric agriculture.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"740 ","pages":"Article 109890"},"PeriodicalIF":1.9,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144481299","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}

{"title":"Decoding late Quaternary paleoclimatic signatures from the western Bay of Bengal: A multiproxy approach","authors":"Nayana V. Haridas ,&nbsp;Upasana S. Banerji ,&nbsp;D. Padmalal ,&nbsp;K. Maya ,&nbsp;P. John Kurian ,&nbsp;Ravi Bhushan ,&nbsp;Ankur J. Dabhi ,&nbsp;Deepak Kumar Agarwal ,&nbsp;A.K. Sudheer ,&nbsp;Ruta B. Limaye ,&nbsp;K.P.N. Kumaran","doi":"10.1016/j.quaint.2025.109887","DOIUrl":"10.1016/j.quaint.2025.109887","url":null,"abstract":"<div><div>Investigating climate teleconnections and their feedback mechanisms in the global climate system during the late Quaternary period is indispensable in combating the adversities of climate change due to global warming and achieving reliable climate predictions. Even though the Indian monsoon system is a major component of the global climate and hydrological system that gets severely impacted by other climate variables and natural climate forcings, its responses and linkages with different climate parameters remain poorly understood. The Bay of Bengal (BoB), a prominent sub-basin of the Northern Indian Ocean, receives rainfall mainly from the Indian Summer Monsoon (ISM) and partly from the Northeast Monsoon (NEM). Further, the basin receives a large quantity of fluvial sediment discharges from both the Himalayan and peninsular rivers. Considering the unique geo-environmental settings of the BoB and its teleconnection with global climate forcings, the present study has attempted to address the paleoclimate and paleoceanographic variability and their plausible linkages with the global climate system using a marine sediment core of ∼2.90 m retrieved from the western BoB. The chronology of the core was established using AMS radiocarbon dates, while past climate and oceanographic conditions were reconstructed through a multiproxy approach. The present study demonstrated a plausible dominance of terrestrially derived C₄ plants during 45−15 ka. Further, the study also suggested a conspicuous increase in the <em>in-situ</em> calcareous productivity observed during 25−14 ka and the last 4 ka associated with poor freshwater stratification. Conversely, the strengthened ISM during 12–4 ka resulted in enhanced freshwater inflows and prominent stratification in the western BoB, inhibiting <em>in-situ</em> calcareous productivity. The present study has implications for millennial-scale hydroclimate changes in the BoB and its linkage with the regional and global climate dynamics.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"740 ","pages":"Article 109887"},"PeriodicalIF":1.9,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144481297","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}