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Late Quaternary palaeoenvironmental and palaeogeographic evolution in the Fuego river valley, central Tierra del Fuego, southern South America 南美洲南部火地岛中部火地河流域晚第四纪古环境与古地理演化
IF 1.9 3区 地球科学
Quaternary International Pub Date : 2025-01-29 DOI: 10.1016/j.quaint.2025.109683
Pamela Alli , Alejandro Montes , Soledad Candel , Ana María Borromei , Silvana Rodríguez , Andrea Coronato , Ramiro López
{"title":"Late Quaternary palaeoenvironmental and palaeogeographic evolution in the Fuego river valley, central Tierra del Fuego, southern South America","authors":"Pamela Alli ,&nbsp;Alejandro Montes ,&nbsp;Soledad Candel ,&nbsp;Ana María Borromei ,&nbsp;Silvana Rodríguez ,&nbsp;Andrea Coronato ,&nbsp;Ramiro López","doi":"10.1016/j.quaint.2025.109683","DOIUrl":"10.1016/j.quaint.2025.109683","url":null,"abstract":"<div><div>Palaeoenvironmental and palaeogeographic evolution were reconstructed from a Late Quaternary sedimentary section at Fuego river valley (53° 58.602′ S - 67° 32.230′ W) on the Atlantic coast of the forest-steppe ecotone, central Tierra del Fuego, southern Argentina. This multiproxy study integrates geomorphology, palynology (sporomorphs and non-pollen palynomorphs-NPPs), sedimentology, tephrochronology, and geochemical parameters (organic matter content). During Marine Isotopic Stage 5e, the shoreline configuration resembled the present but was positioned 13–15 m above the current mean sea level. Subsequently, fluvial erosion processes, associated with a drop in base-level, shaped the coastal landscape, creating canyons and narrow valleys. In the Early Holocene (approximately 10,000 cal yr BP), the development of salt carpet vegetation dominated by Chenopodiaceae, along with the presence of marine palynomorphs, suggests that the Fuego River valley was inundated during the Holocene marine transgression driven by post-glacial sea-level rise. A subsequent interval characterized by low palynomorph content is attributed to taphonomic processes that impeded palynomorph preservation, hindering the detailed reconstruction of environmental conditions during the mid-Holocene maximum marine transgression. In the Late Holocene, after 1200 cal yr BP, the development of grassland (Poaceae) and herbaceous (Caryophyllaceae) vegetation was associated with alluvial environments, while the presence of freshwater aquatic palynomorphs suggests shallow freshwater conditions near the study area.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"720 ","pages":"Article 109683"},"PeriodicalIF":1.9,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170640","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
Marine terrace staircases of western Iberia: Uplift rate patterns from rocky limestone coasts of central Portugal (Cape Raso - Abano beach and Cape Espichel) 伊比利亚西部的海洋阶地阶梯:葡萄牙中部石灰岩海岸的隆起率模式(拉索角-阿巴诺海滩和埃斯皮切尔角)
IF 1.9 3区 地球科学
Quaternary International Pub Date : 2025-01-27 DOI: 10.1016/j.quaint.2024.109657
António A. Martins , Margarida P. Gouveia , Pedro P. Cunha , João Cabral , Alberto Gomes , Christophe Falguères , Pierre Voinchet , Martin Stokes , Bento Caldeira , Jan-Pieter Buylaert , Andrew S. Murray , Jean-Jacques Bahain , Silvério Figueiredo
{"title":"Marine terrace staircases of western Iberia: Uplift rate patterns from rocky limestone coasts of central Portugal (Cape Raso - Abano beach and Cape Espichel)","authors":"António A. Martins ,&nbsp;Margarida P. Gouveia ,&nbsp;Pedro P. Cunha ,&nbsp;João Cabral ,&nbsp;Alberto Gomes ,&nbsp;Christophe Falguères ,&nbsp;Pierre Voinchet ,&nbsp;Martin Stokes ,&nbsp;Bento Caldeira ,&nbsp;Jan-Pieter Buylaert ,&nbsp;Andrew S. Murray ,&nbsp;Jean-Jacques Bahain ,&nbsp;Silvério Figueiredo","doi":"10.1016/j.quaint.2024.109657","DOIUrl":"10.1016/j.quaint.2024.109657","url":null,"abstract":"<div><div>The Western Iberian Peninsula is undergoing compressive tectonic reactivation, resulting in spatial and temporal variations of surface uplift. Uplift quantification can be undertaken in coastal settings using staircases of shore platforms developed onto rocky headlands. This study analyses two marine terrace staircases in central Portugal: Cape Raso - Abano beach and Cape Espichel. Geomorphic and stratigraphic analyses identified marine terraces/shore platforms developed below a culminant shore platform, four at Cape Raso and eleven at Cape Espichel. The terrace chronology was obtained by using ESR and pIRIR dating. Using the interactions between the elevation, age and global mean sea-level elevations, the marine terraces were correlated with Marine Isotope Stages (MIS). The shore platforms at the Cape Espichel are more elevated than the coeval references at the Cape Raso - Abano beach and this indicates differential uplift. Considering the culminant shore platform (3.7 Ma), for the Espichel W promontory the estimated long-term uplift rate is ∼0.03 m/ka, but for the Cape Raso is only ∼0.01 m/ka. Also, by using the shore platform considered as produced by the MIS 15 high stand (∼572 ka), the estimated uplift rate for the Espichel W promontory is ∼0.13 m/ka, but for the Cape Raso is ∼0.07 m/ka. The Espichel W promontory terrace staircase also allows to deduce that the estimated uplift rate was nearly constant during ∼600 ka to ∼200 ka ago (∼0.13–0.11 m/kA), but it after decreases (∼0.06–0.01 m/ka).</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"720 ","pages":"Article 109657"},"PeriodicalIF":1.9,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143168712","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
Pompeii: Seeds and fruits from workshop VII 14, 3 庞贝:车间VII的种子和果实14,3
IF 1.9 3区 地球科学
Quaternary International Pub Date : 2025-01-27 DOI: 10.1016/j.quaint.2025.109671
Silvia Pallecchi , Elisabetta Castiglioni , Mauro Rottoli
{"title":"Pompeii: Seeds and fruits from workshop VII 14, 3","authors":"Silvia Pallecchi ,&nbsp;Elisabetta Castiglioni ,&nbsp;Mauro Rottoli","doi":"10.1016/j.quaint.2025.109671","DOIUrl":"10.1016/j.quaint.2025.109671","url":null,"abstract":"<div><div>This paper presents a study of carpological remains discovered at Pompeii (VII 14, 3) during archaeological investigations conducted by the University of Genoa. Samples were collected from contexts spanning from the late 3rd century BC to 79 AD. During this time-frame, the area underwent numerous transformations, serving consecutively as an open space with latrines, a disposal site for domestic waste, a location for craft workshops, and ultimately hosting a workshop.</div><div>Except for a few samples preserved for future analysis, sediments from the contexts examined underwent thorough water-sieving on a declining-mesh sieve column and simultaneous flotation. The material examined comes from 60 samples (15 obtained via visual inspection and 45 by means of flotation) relating to 29 stratigraphic units, totalling approximately 2.2 m<sup>3</sup> of soil.</div><div>Given the sealed and undisturbed nature of these contexts, the consistent composition of accumulations derived from faeces and food remains, in both the older and newer latrines and the refuse dump, suggests a continuity in dietary choices lasting several centuries, despite the evolving use of the area.</div><div>Carpological remains provide minimal evidence of natural environments or other anthropized contexts, highlighting the cleanliness and orderliness of the area occupied by latrines and the refuse dump, which functioned as a well-maintained courtyard.</div><div>The collective data suggest that this part of the city was already fully urbanized by the 2nd century BC. Stratigraphic evidence indicates continued activity even after the foundation of the Roman colony, portraying a diverse consumption pattern including various major cereals (<em>Hordeum</em> and <em>Triticum</em> spp.), along with millet and foxtail millet, some legumes, other vegetables, and abundant fruits.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"720 ","pages":"Article 109671"},"PeriodicalIF":1.9,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170639","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
Tracing the history of a Mediterranean terraced landscape: Interdisciplinary research in the Cinque Terre coastal region (NW Italy) 追溯地中海梯田景观的历史:五渔村沿海地区(意大利西北部)的跨学科研究
IF 1.9 3区 地球科学
Quaternary International Pub Date : 2025-01-24 DOI: 10.1016/j.quaint.2025.109670
Valentina Pescini , Alessandro Panetta , Bruna Ilde Menozzi , Carlo Montanari
{"title":"Tracing the history of a Mediterranean terraced landscape: Interdisciplinary research in the Cinque Terre coastal region (NW Italy)","authors":"Valentina Pescini ,&nbsp;Alessandro Panetta ,&nbsp;Bruna Ilde Menozzi ,&nbsp;Carlo Montanari","doi":"10.1016/j.quaint.2025.109670","DOIUrl":"10.1016/j.quaint.2025.109670","url":null,"abstract":"","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"719 ","pages":"Article 109670"},"PeriodicalIF":1.9,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092963","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
Debris production, transport, and sedimentation at high fluid pressures in subglacial conduits 冰下管道中高流体压力下碎屑的产生、运输和沉积
IF 1.9 3区 地球科学
Quaternary International Pub Date : 2025-01-22 DOI: 10.1016/j.quaint.2024.109650
Adrian Hall , Mikis van Boeckel
{"title":"Debris production, transport, and sedimentation at high fluid pressures in subglacial conduits","authors":"Adrian Hall ,&nbsp;Mikis van Boeckel","doi":"10.1016/j.quaint.2024.109650","DOIUrl":"10.1016/j.quaint.2024.109650","url":null,"abstract":"<div><div>We lack robust criteria to identify where and when subglacial fluid pressures exceeded ice overburden pressure during debris production, transport, and deposition at former ice sheet beds. In this study, we use hydraulic damage as a marker for locations where overpressure (P<sub>w</sub> ≥ P<sub>i</sub>) developed. We focus on former subglacial conduits in Uppland, east-central Sweden, which represent Röthlisberger, Nye, and Hooke channels and lie on the floors of kilometre-wide subglacial meltwater corridors. The conduit floors show examples of hydrofracture, hydraulic jacking, and hydraulic bursting, with pervasive brecciation and fracture fill. Previous work has shown that subglacial rock hydrofracture requires fluid pressures greater than ice-overburden pressure to overcome the tensile strengths of old fractures (≤0.7 MPa) and of unfractured Precambrian gneisses (&gt;8 MPa). Critically, at our sites, hydraulic damage was generated during high energy mass and fluid flows. In subglacial meltwater corridors, decimetre to metre depth sheetflow was initially dominant, with concentration of flow in broad, shallow H-channels. Hydraulic damage in rock was accompanied by till dilation and fluidisation, with pressure driven debris flows. In R- and N-channels, we identify distinctive sedimentary features that developed as conduits opened under overpressured pipeflow. These include high rubble concentrations that were sourced from the disintegration of underlying bedrock, rubble diamictons or poorly sorted and matrix-supported gravels interpreted as short-lived debris flows, coupled debris-hyperconcentrated flows, transport of large boulders under buoyancy, fluid escape structures, and sediment freezing due to instantaneous decompression. Similar assemblages of hydraulic damage and sedimentary features record the arrival and passage of pressurised subglacial flood waves and the concentration of sheetflow into conduits during historic jökulhaups. Major subglacial floods developed in Uppland during rapid final melt of the last Fennoscandian Ice Sheet in the early Holocene. We find that transient high subglacial fluid pressures contributed significantly to (i) the production of fresh rock debris, (ii) the erosion and recycling of till, and (iii) the transport and deposition of dense slurries in subglacial conduits.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"720 ","pages":"Article 109650"},"PeriodicalIF":1.9,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143168713","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
Tracing the transfers of raw materials in the Gravettian of Moravia and Silesia 追踪摩拉维亚和西里西亚格拉维特地区的原材料转移
IF 1.9 3区 地球科学
Quaternary International Pub Date : 2025-01-17 DOI: 10.1016/j.quaint.2025.109665
Martin Moník , Zdeňka Nerudová , Martin Novák , Antonín Přichystal , Filip Gregar , Petr Hamrozi , Tomáš Pluháček
{"title":"Tracing the transfers of raw materials in the Gravettian of Moravia and Silesia","authors":"Martin Moník ,&nbsp;Zdeňka Nerudová ,&nbsp;Martin Novák ,&nbsp;Antonín Přichystal ,&nbsp;Filip Gregar ,&nbsp;Petr Hamrozi ,&nbsp;Tomáš Pluháček","doi":"10.1016/j.quaint.2025.109665","DOIUrl":"10.1016/j.quaint.2025.109665","url":null,"abstract":"<div><div>In order to reconstruct the procurement pattern of lithics in the Moravian/Silesian Gravettian culture and to make a comparison with neighbouring areas, raw material analysis from five Gravettian sites in Moravia/Silesia (Czech Republic) was carried out using stereomicroscopy and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). In Moravia, the characteristic raw material economy of the Gravettian was the import of fine-grained cherts and erratic flints from northern Moravia (and Silesia) or Southern Poland. However, radiolarites from the Pieniny Klippen Belt (present-day Slovakia and Poland) were also used and complemented on sites under the Pavlovské vrchy Hills by local (gravel) materials. Elemental analysis has also confirmed the use of Hungarian radiolarites at Moravian sites. However, these, as well as obsidian from Eastern Slovakia, were rarely used. The contact between Moravia and these two areas (Eastern Slovakia and Hungary) was probably less intensive than with Lower Austria and Southern Poland. Compared to the procurement pattern of the preceding Aurignacian culture, the most striking difference is the longer (and costly) transfers of erratic flints in the Gravettian. These now dominated the lithic material even at sites along the Danube River, 250 km from their sources. This probably correlates with organised provisioning of large, semi-permanent sites and specialised hunting.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"719 ","pages":"Article 109665"},"PeriodicalIF":1.9,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092962","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
Fauna from the early Acheulean site of Gombore IB, Melka Kunture, upper Awash, Ethiopia: Systematics and paleoecology 埃塞俄比亚上阿瓦什Melka Kunture Gombore IB早期阿舍利遗址的动物群:系统分类学和古生态学
IF 1.9 3区 地球科学
Quaternary International Pub Date : 2025-01-17 DOI: 10.1016/j.quaint.2025.109672
Denis Geraads
{"title":"Fauna from the early Acheulean site of Gombore IB, Melka Kunture, upper Awash, Ethiopia: Systematics and paleoecology","authors":"Denis Geraads","doi":"10.1016/j.quaint.2025.109672","DOIUrl":"10.1016/j.quaint.2025.109672","url":null,"abstract":"<div><div>The fauna from the Early Acheulean site of Gombore IB is relatively abundant but quite fragmented. As in the other sites of Melka Kunture, it is dominated by hippos and alcelaphin bovids, followed by equids. Suids are rare, and all other taxa (i.e., rhinos, giraffids, tragelaphins, primates) are virtually absent. In spite of the presence of forested areas nearby, the taphocenosis sampled an open-country faunal assemblage. The fauna resembles that of the nearby site of Garba IVD, but exact contemporaneity is unlikely.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"719 ","pages":"Article 109672"},"PeriodicalIF":1.9,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092925","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
Response of sensitive grain size components in the muddy area off the southern coast of Weihai city, China, to Holocene climate and environmental changes 威海南海岸泥质区敏感粒度组分对全新世气候环境变化的响应
IF 1.9 3区 地球科学
Quaternary International Pub Date : 2025-01-15 DOI: 10.1016/j.quaint.2024.109632
Xiaokun Feng , Jinqing Liu , Shengyu Wang , Yamin Zhang , Ping Yin , Fei Gao , Ke Cao , Xiaoying Chen
{"title":"Response of sensitive grain size components in the muddy area off the southern coast of Weihai city, China, to Holocene climate and environmental changes","authors":"Xiaokun Feng ,&nbsp;Jinqing Liu ,&nbsp;Shengyu Wang ,&nbsp;Yamin Zhang ,&nbsp;Ping Yin ,&nbsp;Fei Gao ,&nbsp;Ke Cao ,&nbsp;Xiaoying Chen","doi":"10.1016/j.quaint.2024.109632","DOIUrl":"10.1016/j.quaint.2024.109632","url":null,"abstract":"<div><div>Studying marine sediment is crucial for understanding the processes and mechanisms of Holocene climate and environmental changes. In this study, we analyzed the grain size distribution of the sediments from WHZK01 Core (0–14.95 m) in the muddy area off the southern coast of Weihai city, and extracted the sensitive grain size (SGS) using the grain size-standard deviation method, to further analyse the sediment transport mechanism since the Holocene and its significance as an environmental indicator in the climate change. The results show that the sediments in WHZK01 Core is mainly composed of silt and clayey silt, with poor sorting and a positive skewness, and primarily transported by suspension and saltation. We identified three SGSs: SGS 1 (&lt;15.63 μm), SGS 2 (15.63 μm–148.65 μm), and SGS 3 (&gt;148.65 μm), corresponding to the fine, medium, and coarse components of the sediment, respectively. Among them, SGS 2 exhibits a strong correlation with events of intensified East Asian winter monsoon(EAWM). Based on the variations in this grain size fraction, eight prominent EAWM intensification events over the past ∼11,000 years (Holocene) were identified: 8100–7600 a BP, 6300–6000 a BP, 5500–5050 a BP, 4600–4200 a BP, 4100–3600 a BP, 2850–2400 a BP, 1900–1500 a BP and 700-175 a BP, which are good indicators of palaeoclimatic environmental changes.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"716 ","pages":"Article 109632"},"PeriodicalIF":1.9,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148436","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 frameworks for the Middle Stone Age and Later Stone Age in Northwest Africa 西北非洲石器时代中期和后期的气候框架
IF 1.9 3区 地球科学
Quaternary International Pub Date : 2025-01-15 DOI: 10.1016/j.quaint.2024.109593
Solène Boisard , Colin D. Wren , Lucy Timbrell , Ariane Burke
{"title":"Climate frameworks for the Middle Stone Age and Later Stone Age in Northwest Africa","authors":"Solène Boisard ,&nbsp;Colin D. Wren ,&nbsp;Lucy Timbrell ,&nbsp;Ariane Burke","doi":"10.1016/j.quaint.2024.109593","DOIUrl":"10.1016/j.quaint.2024.109593","url":null,"abstract":"<div><div>This paper examines climate conditions in Northwest Africa for Marine Isotope Stage 4, 3, and 2 (71,000–11,000 years ago) and their impact on the distribution of potential suitable areas on a regional scale. The analysis uses climate simulations to model: 1) the geographical extent and variability of macro-refugia based on ethnographic data; and 2) the frequency of suitable areas based on climate ranges obtained at dated archaeological occupations. The results include the production of maps of MSA and LSA site distribution, and annual precipitation and temperature values for each dated human occupation. The macro-refugia models confirm the persistence and low variability of ecological macro-refugia along the Mediterranean coast but reveal limitations in Central Sahara. Macro-refugia models aligned closely with climate-archaeological models, except for Marine Isotope Stage 4. Despite the general spatio-temporal limitations of climate simulations, our study offers valuable data to be integrated with local environmental proxies. These climate frameworks and insights can contribute to the exploration of past human demography, connectivity and human-environment interactions across different scales of analysis.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"716 ","pages":"Article 109593"},"PeriodicalIF":1.9,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148262","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
Diatom assemblages indicated ecological shifts over the past two centuries in Bosten Lake, northwest China: Natural and anthropogenic forcings 博斯腾湖硅藻群落反映了过去两个世纪的生态变迁:自然和人为强迫
IF 1.9 3区 地球科学
Quaternary International Pub Date : 2025-01-15 DOI: 10.1016/j.quaint.2024.109629
Muhammad Farqan, Lixiong Xiang, Lan Jiang, Wenjia Wang, Min Zheng, Xiaoyan Mu, Xin Liu, Xueqing Song, Zezhou Zhu, Ramamoorthy Ayyamperumal, Xiaozhong Huang
{"title":"Diatom assemblages indicated ecological shifts over the past two centuries in Bosten Lake, northwest China: Natural and anthropogenic forcings","authors":"Muhammad Farqan,&nbsp;Lixiong Xiang,&nbsp;Lan Jiang,&nbsp;Wenjia Wang,&nbsp;Min Zheng,&nbsp;Xiaoyan Mu,&nbsp;Xin Liu,&nbsp;Xueqing Song,&nbsp;Zezhou Zhu,&nbsp;Ramamoorthy Ayyamperumal,&nbsp;Xiaozhong Huang","doi":"10.1016/j.quaint.2024.109629","DOIUrl":"10.1016/j.quaint.2024.109629","url":null,"abstract":"<div><div>Arid Central Asia (ACA), accounting for one-third of the world arid regions, is noted for its sparse freshwater resources and delicate ecosystems. Lakes in this region are sensitive to the complex interactions between climate warming, human impact, and the water cycle, affecting aquatic ecosystems as well as species distributions. Here, we reanalyzed relationships between measured environmental variables and the spatial distribution of 40 previously published lake surface sediment diatom (Bacillariophyceae) assemblages along with synthesized sediment cores from 4 distinct locations in Bosten Lake with the intention of developing a diatom-inference model for water depth. Diatom assemblage variations differed across surface sediment samples and within cores in Bosten Lake. The initial period (1770–1910 CE) is characterized by oligotrophic taxa such as <em>Lindavia radiosa</em> and <em>Navicula peroblonga</em>, which transitioned towards meso-eutrophic species such as <em>Pseudostaurosira</em>, <em>Staurosira</em>, and <em>Staurosirella</em> spp. (formerly classified in the genus <em>Fragilaria</em>) during 1910–1960 CE and notably lake became more eutrophic post-1960, marked by the abundance of <em>Fragilaria</em> cf. <em>crotonensis</em>. Redundancy analysis (RDA) showed that lake water depth explained a statistically significant portion of diatom assemblage variations. Weighted-averaging partial least squares (WA-PLS) is used to develop a diatom-based depth inference model (<span><math><mrow><msubsup><mi>R</mi><mtext>jack</mtext><mn>2</mn></msubsup></mrow></math></span> = 0.94, RMSEP = 1.08 m, and maximum bias = 2.57 m) based on diatom optima from Bosten Lake. Diatom-depth reconstructions and changes in diatom community composition are of great importance to track lake ecosystem dynamics, ensuring the sustainability of vital freshwater resources in the ACA and beyond.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"716 ","pages":"Article 109629"},"PeriodicalIF":1.9,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148437","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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