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Tracing the early dispersal of reindeer in southern Sweden: Chronology, habitat, and human interaction (c. 12,000-7000 BCE). 追踪驯鹿在瑞典南部的早期分布:年代、栖息地和人类互动(公元前12000 -7000年)。
IF 1.6 3区 地球科学
Holocene Pub Date : 2026-03-11 eCollection Date: 2026-06-01 DOI: 10.1177/09596836261422209
Markus Fjellström, Peter Jordan, Anders Angerbjörn, Anna-Kaisa Salmi, Kerstin Lidén
{"title":"Tracing the early dispersal of reindeer in southern Sweden: Chronology, habitat, and human interaction (<i>c</i>. 12,000-7000 BCE).","authors":"Markus Fjellström, Peter Jordan, Anders Angerbjörn, Anna-Kaisa Salmi, Kerstin Lidén","doi":"10.1177/09596836261422209","DOIUrl":"10.1177/09596836261422209","url":null,"abstract":"<p><p>After the wider deglaciation of Northern Europe, pioneer reindeer populations started to move into southern Scandinavia; however, this process is poorly understood. In this paper we aim to reconstruct dispersal processes of reindeer into southern and western Sweden from the Late Palaeolithic through to the Early Mesolithic, when reindeer disappear from the record. Has presence of reindeer in southern Sweden changed over time, were there changes in habitat and was the hunt of reindeer a possible driving factor to their disappearance? We have assembled and analysed a dataset of 220 unburnt reindeer skeletal elements from wetlands, earthen finds and shell middens from southern and western Sweden. Additional <sup>14</sup>C-analysis have been performed to set the chronological frame. The results demonstrate that reindeer were present in southern and western Sweden from 12,066 to 7079 cal BCE and that the number of reindeer was highest during the Early Holocene. Stable isotope analyses (δ<sup>13</sup>C and δ<sup>15</sup>N), provided information on changes in reindeer habitat. The marked variation in δ<sup>13</sup>C and δ<sup>15</sup>N values suggests that reindeer grazed in different habitats or that the habitat change over time. We suggest that the decrease and final disappearance of reindeer in the Late Palaeolithic/Early Mesolithic was caused by changes in climate and habitat rather than anthropogenically induced.</p>","PeriodicalId":50402,"journal":{"name":"Holocene","volume":"36 5-6","pages":"607-623"},"PeriodicalIF":1.6,"publicationDate":"2026-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13258190/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148254258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An absolutely dated mid-Holocene English yew chronology offers new opportunities for archaeological and palaeoenvironmental research. 一个绝对确定的中全新世英国红豆杉年表为考古和古环境研究提供了新的机会。
IF 1.6 3区 地球科学
Holocene Pub Date : 2026-02-03 eCollection Date: 2026-04-01 DOI: 10.1177/09596836251407634
Tatiana Bebchuk, Darren Davies, Neil J Loader, Otmar Urban, Tito Arosio, Lukas Wacker, Natálie Pernicová, Josef Čáslavský, Miroslav Trnka, Alexander V Kirdyanov, David Brown, Jan Esper, Clive Oppenheimer, Ulf Büntgen
{"title":"An absolutely dated mid-Holocene English yew chronology offers new opportunities for archaeological and palaeoenvironmental research.","authors":"Tatiana Bebchuk, Darren Davies, Neil J Loader, Otmar Urban, Tito Arosio, Lukas Wacker, Natálie Pernicová, Josef Čáslavský, Miroslav Trnka, Alexander V Kirdyanov, David Brown, Jan Esper, Clive Oppenheimer, Ulf Büntgen","doi":"10.1177/09596836251407634","DOIUrl":"10.1177/09596836251407634","url":null,"abstract":"<p><p>Research on Holocene climate variability and human history greatly benefits from annually resolved and absolutely dated tree-ring chronologies. The quality and quantity of such records, however, decline back in time, with little tree-ring evidence available for the Early and Middle Holocene. Here, we present a tree-ring width (TRW) chronology from 100 subfossil yews (<i>Taxus baccata</i> L.) excavated from peat-rich soils in the Fenland region of eastern England. To precisely date the record, we measured stable oxygen (δ<sup>18</sup>O) isotopic ratios of over 1500 tree rings from a subset of 12 disc samples and used an absolutely dated oak (<i>Quercus</i> spp.) δ<sup>18</sup>O chronology from the same region for cross-dating. Statistically significant isotopic agreement between the two species precisely dates the yew TRW chronology from 2668 to 2213 years BCE (<i>r</i> = 0.4, <i>t</i>-value = 7.9, probability of error > 10<sup>6</sup>, Isolation Factor > 10<sup>3</sup>). This 456-year period in the mid-Holocene marks the Neolithic-to-Bronze Age transition, coincides with the spread of the Bell Beaker culture across the British Isles, and precedes the still debated 4.2 ka climate anomaly. Emphasizing the advantages of tree-ring stable isotopes, our absolutely dated yew record offers new opportunities for archaeological interpretations and palaeoclimatological reconstructions in eastern England and beyond. We further expect our results to help dating the Icelandic eruptions of Katla and Hekla 4 and refining the next radiocarbon calibration curve.</p>","PeriodicalId":50402,"journal":{"name":"Holocene","volume":"36 4","pages":"382-389"},"PeriodicalIF":1.6,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12974950/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147437218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
3D digitization and archaeobotanical analysis of wooden artifacts 木制文物的三维数字化和考古植物学分析
IF 2.4 3区 地球科学
Holocene Pub Date : 2023-09-01 DOI: 10.1177/09596836231176486
L. Caruso Fermé, Ivana Leticia González Bagur
{"title":"3D digitization and archaeobotanical analysis of wooden artifacts","authors":"L. Caruso Fermé, Ivana Leticia González Bagur","doi":"10.1177/09596836231176486","DOIUrl":"https://doi.org/10.1177/09596836231176486","url":null,"abstract":"The study of wooden artifacts recovered in dry context is scarce. The objective of this work is to identify morphometric patterns in wooden artifacts and to evaluate their relationship with the technological manufacturing processes. To this end, wooden artifacts were analyzed from the site Cerro Casa de Piedra 7, through the 3D scanning, calculation of curvature directions and archaeobotanical analysis. These artifacts are associated to hunter-gatherer groups and different occupations of the early Holocene. The results obtained show, on the one hand, the efficiency of the use of these techniques in the analysis of wooden artifacts recovered in completely dry contexts. The use of 3D scanning techniques showed that they can improve the analysis of manufacturing traces and/or use of wooden artifacts and the possibility of simulating the obtained results by computer. On the other hand, they show the existence of morphometric patterns, sustained in time, which are related to the manufacturing of the artifacts from the Cerro Casa de Piedra 7. In summary, the archaeobotanical analysis methodology presented and developed in this work allows its application to the study of different woody materials regardless of their chronology and recovery site.","PeriodicalId":50402,"journal":{"name":"Holocene","volume":"33 1","pages":"1107 - 1117"},"PeriodicalIF":2.4,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41950859","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
Climate change, site formation, and indigenous use of coastlines in Barbuda 巴布达的气候变化、遗址形成和土著对海岸线的利用
IF 2.4 3区 地球科学
Holocene Pub Date : 2023-09-01 DOI: 10.1177/09596836231176497
I. Rivera-Collazo, S. Perdikaris
{"title":"Climate change, site formation, and indigenous use of coastlines in Barbuda","authors":"I. Rivera-Collazo, S. Perdikaris","doi":"10.1177/09596836231176497","DOIUrl":"https://doi.org/10.1177/09596836231176497","url":null,"abstract":"This article explores the landscape dynamics at the island of Barbuda in the context of changing climate to understand (1) the environmental setting of indigenous settlements; (2) the impacts of current coastal processes; and (3) the potential threats moving forward toward increasing pressure of climate change. Focusing on the site of Seaview, on the east coast of Barbuda, we use geoarchaeological methods to reconstruct the ancient geomorphological setting, investigate changes post-abandonment, and identify the hazards faced under future sea-level projections. Our study shows that (1) sea level stabilization after the Mid-Holocene allowed the formation of coral reefs, seagrass beds and other benthic ecosystems that allowed for biogenic sediment accumulation and growth of sand dune retention ridges. (2) These environmental characteristics, including rich marine food sources, supported the establishment and flourishing of Seaview starting ca. 160 BC. (3) Occupation ended at some point between AD960 and 1000. This change coincided with a period of increased storminess, higher SSTs, and possible coral reef mortality that affected both food availability and sediment supply. (4) Lack of sediments triggered progressive sand dune erosion that continues today and has left the sand dune ridge past the tipping point of erosion. (5) Looking into a future of rapidly changing climate, sea level rise poses a severe and devastating threat to the land- and seascapes of Barbuda. With the lowland coastal plain at or only slightly above current sea level, a rate of SLR comparable to Mid-Holocene rates, and rapid loss of sand dune ridges and coral reefs as natural barriers, it is just a matter of time before the lowlands become transformed beyond recognition. The results of this analysis can be used to improve long-term management of the heritage resources of Barbudans and shed light on parallel challenges experienced on other tropical coastal locations.","PeriodicalId":50402,"journal":{"name":"Holocene","volume":"33 1","pages":"1142 - 1153"},"PeriodicalIF":2.4,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44335655","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
Inherited age of floating charcoal fragments in a sand-bed stream, Macdonald River, NSW, Australia: Implications for radiocarbon dating of sediments 澳大利亚新南威尔士州麦克唐纳河沙床溪流中漂浮木炭碎片的继承年代:沉积物放射性碳年代测定的意义
IF 2.4 3区 地球科学
Holocene Pub Date : 2023-09-01 DOI: 10.1177/09596836231176502
R. Blong, K. Fryirs, R. Wood, Fleur King, L. Schneider, Emilie Dotte-Sarout, S. Fallon, R. Gillespie, Qianyang Chen, R. Esmay
{"title":"Inherited age of floating charcoal fragments in a sand-bed stream, Macdonald River, NSW, Australia: Implications for radiocarbon dating of sediments","authors":"R. Blong, K. Fryirs, R. Wood, Fleur King, L. Schneider, Emilie Dotte-Sarout, S. Fallon, R. Gillespie, Qianyang Chen, R. Esmay","doi":"10.1177/09596836231176502","DOIUrl":"https://doi.org/10.1177/09596836231176502","url":null,"abstract":"Radiocarbon dates on multiple individual charcoal fragments floating together down the Macdonald River, New South Wales, Australia, have calibrated ages spanning >1700 years. Partial explanations of this range of inherited ages can be attributed to the inbuilt age of living biomass, charcoalisation conditions, hillslope transport and storage and/or valley floor (fluvial) transport and storage, but the contribution of each of these components can be constrained only rarely. These results caution against using radiocarbon dating of charcoal as the sole dating technique to interpret Late-Holocene sedimentary histories. These findings also show that it is unlikely that deposit age has a dependable relationship to charcoal age.","PeriodicalId":50402,"journal":{"name":"Holocene","volume":"33 1","pages":"1154 - 1159"},"PeriodicalIF":2.4,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41985042","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
Living through changing climates: Temperature and seasonality correlate with population fluctuations among Holocene hunter-fisher-gatherers on the west coast of Norway 生活在变化的气候中:温度和季节与挪威西海岸全新世狩猎-捕鱼-采集者的人口波动有关
IF 2.4 3区 地球科学
Holocene Pub Date : 2023-08-04 DOI: 10.1177/09596836231185839
Victor Lundström
{"title":"Living through changing climates: Temperature and seasonality correlate with population fluctuations among Holocene hunter-fisher-gatherers on the west coast of Norway","authors":"Victor Lundström","doi":"10.1177/09596836231185839","DOIUrl":"https://doi.org/10.1177/09596836231185839","url":null,"abstract":"The use of archaeological proxy records representative of population dynamics is paramount for a richer understanding of prehistoric cultural change, but its use require a dialectic assessment between proximate climatic drivers and ultimate cultural responses. Focusing on the Stone Age archaeological record of Western Norway (11,500–4300 cal. BP), this paper presents an exhaustive empirical curation and statistical testing between changing climates and demographic responses among coastal hunter-fisher-gatherers. The results connect long-term demographic fluctuations with changes in annual mean temperatures and seasonality and the results are discussed in relation changes in technology, subsistence and mobility. The paper also highlights the process of population decline and cultural loss towards the end of the Late Mesolithic (ca. 7000–6000 cal. BP) and emerging cultural novelties and population re-growth during the Early and Middle Neolithic (ca. 6000–4300 cal. BP). However, despite its strong correlation, the archaeological record of Western Norway lacks sufficient detail to ascribe an exclusive explanatory role to climate change, especially in episodes of significant population decline. This helps to emphasise that changing climates, while evidently central, form but a part of a larger system of interactions leading to demographic fluctuations and cultural change, the substantiation of which requires significant empirical improvements to the archaeological record.","PeriodicalId":50402,"journal":{"name":"Holocene","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43654948","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
Northern Norway paleofire records reveal two distinct phases of early human impacts on fire activity 挪威北部的古火记录揭示了早期人类对火活动影响的两个不同阶段
IF 2.4 3区 地球科学
Holocene Pub Date : 2023-07-31 DOI: 10.1177/09596836231185826
Rebecca Topness, R. Vachula, N. Balascio, W. D'Andrea, G. Pugsley, Moussa Dia, Martina T. Tingley, L. Curtin, S. Wickler, R. Anderson
{"title":"Northern Norway paleofire records reveal two distinct phases of early human impacts on fire activity","authors":"Rebecca Topness, R. Vachula, N. Balascio, W. D'Andrea, G. Pugsley, Moussa Dia, Martina T. Tingley, L. Curtin, S. Wickler, R. Anderson","doi":"10.1177/09596836231185826","DOIUrl":"https://doi.org/10.1177/09596836231185826","url":null,"abstract":"Paleofire records document fire’s response to climate, ecosystem changes, and human-activity, offering insights into climate-fire-human relationships and the potential response of fire to anthropogenic climate change. We present three new lake sediment PAH records and a charcoal record from the Lofoten Islands, Norway to evaluate the Holocene fire history of northern Norway and examine human impacts on fire in this region. All three datasets show an increase in PAH accumulation rate over the past c. 7500 cal years BP, with an increase c. 5000 cal years BP that signals initial human impacts on fire activity. More significant increases c. 3500 cal years BP reach a maximum c. 2000 cal years BP that correlates with the establishment and expansion of agricultural settlements in Lofoten during the Late Bronze Age and Pre-Roman Iron Age. Decreased PAH accumulation rates c. 1500–900 cal years BP reflect less burning during the Late Iron Age and early medieval period. A shift toward higher molecular weight PAHs and increasing PAHs overall from c. 1000 cal years BP to present, reflects intensified human activity. Sedimentary charcoal (>125 and 63–125 µm) in the Lauvdalsvatnet record does not vary until an increase in the last 900 years, showing a proxy insensitivity to human-caused fire. The Late-Holocene increase in fire activity in Lofoten follows trends in regional charcoal records, but exhibits two distinct phases of increased fire that reflect the intensity of burning due to human landscape changes that overwhelm the signal of natural variations in regional fire activity.","PeriodicalId":50402,"journal":{"name":"Holocene","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47334849","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
The ‘Little Ice Age’ advance of Nigardsbreen, Norway: A cross-disciplinary revision of the chronological framework 挪威Nigardsbreen的“小冰河时代”进展:对时间框架的跨学科修订
IF 2.4 3区 地球科学
Holocene Pub Date : 2023-07-30 DOI: 10.1177/09596836231185830
M. Gjerde, Oddmund Løkensgard Hoel, A. Nesje
{"title":"The ‘Little Ice Age’ advance of Nigardsbreen, Norway: A cross-disciplinary revision of the chronological framework","authors":"M. Gjerde, Oddmund Løkensgard Hoel, A. Nesje","doi":"10.1177/09596836231185830","DOIUrl":"https://doi.org/10.1177/09596836231185830","url":null,"abstract":"This study presents a cross-disciplinary revision of the Little Ice Age (LIA) advance of Nigardsbreen glacier, an outlet from Jostedalsbreen ice cap in western Norway. The associated glacier foreland is characterised by a well-preserved moraine series succeeding the 1748 CE LIA culmination, and a robust age control of individual moraines exists from abundant historical written and pictorial information as well as extensive lichenometric studies. The retreat dynamics of Nigardsbreen ever since the LIA maximum extent was attained is considered well-known. The timing of initiation of the LIA advance and dynamics of the glacier growth prior to reaching its maximum extent, however, is less understood as any moraines predating 1748 CE have been subsequently overridden. Potential archives available for exploring the glacier advance are therefore mostly confined to historical data such as for example, tax records, paintings, and church books, which has resulted in a present-day consensus of the LIA onset of Nigardsbreen c. 1710 CE. However, we show that a lack of adequate critical analysis on the accuracy of published historical data has allowed erroneous ages of glacier terminus positions to manifest in literature, resulting in for example, overestimated glacial advance rates. Here, we combine a novel data set of local tax load directly reflecting glacial impact on farming productivity with a cross-disciplinary assessment of published historical data, including rejection of several data points of former glacier extents. As a result, we present a revised glacier length curve for the LIA advance of Nigardsbreen towards its maximum extent.","PeriodicalId":50402,"journal":{"name":"Holocene","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46289395","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
The development of arable cultivation in the south-east of England and its relationship with vegetation cover: A honeymoon period for biodiversity? 英格兰东南部可耕地的发展及其与植被覆盖的关系:生物多样性的蜜月期?
IF 2.4 3区 地球科学
Holocene Pub Date : 2023-07-30 DOI: 10.1177/09596836231185836
A. de Vareilles, J. Woodbridge, R. Pelling, R. Fyfe, David Smith, G. Campbell, Wendy Smith, W. Carruthers, Stacey Adams, Karine le Hégarat, Lucy Allot
{"title":"The development of arable cultivation in the south-east of England and its relationship with vegetation cover: A honeymoon period for biodiversity?","authors":"A. de Vareilles, J. Woodbridge, R. Pelling, R. Fyfe, David Smith, G. Campbell, Wendy Smith, W. Carruthers, Stacey Adams, Karine le Hégarat, Lucy Allot","doi":"10.1177/09596836231185836","DOIUrl":"https://doi.org/10.1177/09596836231185836","url":null,"abstract":"The onset of prehistoric farming brought unprecedented changes to landscapes and their biodiversity. Past biodiversity patterns are broadly understood for different parts of Europe, and demonstrate trajectories that have been linked to prehistoric and historic demographic transitions, and associated land-use practices. To our knowledge, this paper is the first attempt to directly link evidence of agricultural practice from the archaeological record to biodiversity patterns. Records of fossil pollen are used to estimate plant and landscape diversity patterns, and novel approaches are employed to analyse 1194 harmonised archaeobotanical samples (plant macrofossil remains) spanning the prehistoric and Roman periods, from southern England. We demonstrate changes in the use of crops and gathered edible plants and non-linear trends in cultivation practices. Whilst, overall, cereal production is characterised by ever larger and extensive regimes, different trajectories are evident for most of early prehistory, the Middle Iron Age and the Late Roman period. Comparisons with the Shannon diversity of fossil pollen records from the same region suggest a positive relationship between developing agricultural regimes and landscape scale biodiversity during the prehistoric period. The Roman period represents a tipping point in the relationship between expanding agriculture and pollen diversity, with declining pollen diversity evident in the records from the region.","PeriodicalId":50402,"journal":{"name":"Holocene","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44828238","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
Multi-proxy reconstruction of climate changes in the Lower St. Lawrence Estuary, Canada, during the Middle and Late-Holocene 加拿大下圣劳伦斯河口全新世中晚期气候变化的多代理重建
IF 2.4 3区 地球科学
Holocene Pub Date : 2023-07-29 DOI: 10.1177/09596836231185827
Xiner Wu, Mathieu Lemay-Tougas, A. de Vernal, M. Garneau, B. Fréchette, T. Audet, C. Hillaire‐Marcel
{"title":"Multi-proxy reconstruction of climate changes in the Lower St. Lawrence Estuary, Canada, during the Middle and Late-Holocene","authors":"Xiner Wu, Mathieu Lemay-Tougas, A. de Vernal, M. Garneau, B. Fréchette, T. Audet, C. Hillaire‐Marcel","doi":"10.1177/09596836231185827","DOIUrl":"https://doi.org/10.1177/09596836231185827","url":null,"abstract":"The micropaleontological and palynological content, and geochemical and isotopic composition of a marine sediment core collected off Pointe-des-Monts in eastern Québec, Canada, reveal regional palaeoclimatic and paleoceanographic conditions in the Lower St. Lawrence Estuary over the last ~8200 years. The pollen and spore content allows comparison with the terrestrial palynostratigraphy, whereas dinoflagellate cysts and benthic foraminifera are used to reconstruct sea-surface conditions and bottom water properties, respectively. The dinocyst-based reconstructions indicate shifts between estuarine and oceanic conditions with important changes in sea-surface temperature, salinity, and primary productivity. Both the dinocyst assemblages and the quantitative sea-surface estimates highlight a distinct transition at ca. 4200 cal years BP. It is notably marked by a change towards higher salinity, which suggests reduced freshwater discharge, hence lower precipitation in the watershed, during the Late-Holocene. The isotopic composition (δ18O and δ13C) and assemblages of the benthic foraminifera indicate centennial to millennial frequency variability of bottom water properties, over a general trend towards decreasing temperatures and increasing ventilation from the beginning of the Middle Holocene until the last century. Since then, reverse trends with abrupt warming and decreasing dissolved oxygen content in bottom water have been observed.","PeriodicalId":50402,"journal":{"name":"Holocene","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45018244","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
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