Journal of Quaternary Science最新文献

{"title":"Radiocarbon dates from the Netherlands and Doggerland as a proxy for vegetation and faunal biomass between 55 and 5 ka cal bp","authors":"B. Van Geel,&nbsp;J. Van Der Plicht,&nbsp;C. Kasse,&nbsp;D. Mol","doi":"10.1002/jqs.3582","DOIUrl":"10.1002/jqs.3582","url":null,"abstract":"<p>Three hundred forty-one radiocarbon dates from the Groningen radiocarbon database are compiled in this study. They show for the first time that organic sediment samples from the eastern Netherlands and mammal bones from Doggerland reflect shifts in the presence and the density of vegetation (food for herbivores) and mammal biomass during the last ice age (Weichselian Stage, ~119–14.7 ka cal <span>bp</span>). Comparison with oxygen isotope curves of Greenland ice cores and geomorphological data shows that cold climate, in particular during the younger part of the Weichselian Middle Pleniglacial and during the Late Pleniglacial, and related scarcity or even absence of vegetation, were limiting factors for the carrying capacity of the landscape and thus for the population density of large herbivores during the period covered by ¹⁴C dating (last ca. 55 000 years). A ‘fossil gap’ during the Late Pleniglacial lasted ca. 13 000 years from ca. 28 to 15 ka cal \u0000<span>bp</span>. Previous research from the nearby Eifel region in Germany shows that environmental conditions were less extreme (‘refugium conditions’) than in the Netherlands, taking into account the continuous presence of spores of coprophilous fungi in the Eifel, indicating uninterrupted food supply for herbivores.</p>","PeriodicalId":16929,"journal":{"name":"Journal of Quaternary Science","volume":"39 2","pages":"248-260"},"PeriodicalIF":2.3,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jqs.3582","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138579413","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}

{"title":"Rapid terrace incision and Quaternary landscape evolution in central Patagonia","authors":"Varyl Robert Thorndycraft","doi":"10.1002/jqs.3578","DOIUrl":"10.1002/jqs.3578","url":null,"abstract":"<p>The debate over isostatic uplift versus discharge as drivers of Quaternary river incision is explored here through geospatial analysis of a ~250-m-relief terrace sequence from the Río Pinturas (Argentine Patagonia). The geomorphic setting of the Cañadon Caracoles reach allows evaluation of discharge as a driver of terrace incision because advancing ice during Pleistocene glaciations blocked Pacific drainage and routed meltwater from an expanded ~10⁴-km² catchment to the Atlantic through the dryland steppe of the study area. Twenty-two terrace levels, some assigned to previously dated ice margins [Marine Isotope Stage (MIS) 32–36, MIS 16, MIS 8 and MIS 2], were identified. Average net incision since 800 ka (~0.34 m ka⁻¹) exceeded regional uplift rates. The MIS 2 terraces, with <i>ante quem</i> and <i>post quem</i> age constraint on the timing of terrace formation, show that terrace incision was episodic and faster still during a transitional warming climate. Glacier recession and proglacial lake formation at ~18 ka led to rapid incision of ~11.7 m ka⁻¹ over a few millennia. River capture and negligible flow from ~15.0 ka caused fan-dammed lake formation on the valley floor and vertical stability during MIS 1. The Pinturas terraces demonstrate rapid incision can be driven by discharge and sediment dynamics.</p>","PeriodicalId":16929,"journal":{"name":"Journal of Quaternary Science","volume":"39 2","pages":"208-223"},"PeriodicalIF":2.3,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jqs.3578","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138496829","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}

{"title":"Quaternary alluvial paleosols of the Atbara River, eastern Sudan: description and paleoenvironments","authors":"M. Mohammednoor,&nbsp;F. Bibi,&nbsp;A. Eisawi,&nbsp;S. Tsukamoto,&nbsp;R. Bussert","doi":"10.1002/jqs.3574","DOIUrl":"10.1002/jqs.3574","url":null,"abstract":"<p>Quaternary climatic changes in the Nile Basin and their effects on the evolution of African mammals and vegetation are poorly understood, particularly for the last 1 Ma. Pleistocene (~230 to &lt;17 ka) alluvial sediments exposed along the middle stretches of the Atbara River in eastern Sudan are rich in fossil vertebrates and are ideal for paleoenvironmental reconstruction during this time interval. We performed petrographic, mineralogical and geochemical analyses on the middle Atbara paleosols to reconstruct the paleoclimate and paleolandscape. We describe Aridisols/Calcisols characterized by calcretes and containing gypsum and halite, and Vertisols with pedogenic slickensides and a relatively large amount of smectite. The paleosols indicate that the study area transitioned from an arid to semi-arid climate during Marine Isotope Stage (MIS)7/6, to a more humid climate during MIS5, and then a return to more arid conditions during MIS2. The studied paleosols likely supported a range of grassland and wooded grassland savanna habitats. Our study confirms that the Atbara River Valley provided favorable living conditions for Pleistocene large mammal communities including <i>Homo</i>, potentially facilitating dispersals out of Africa through the Nile corridor.</p>","PeriodicalId":16929,"journal":{"name":"Journal of Quaternary Science","volume":"39 1","pages":"102-118"},"PeriodicalIF":2.3,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jqs.3574","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138496828","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}

{"title":"A thorny taxonomic issue of Quaternary deer (Cervidae: Mammalia) from the South American Highlands resolved based on the recognition of a paleopathology","authors":"Leonardo Santos Avilla,&nbsp;José Luis Román-Carrión,&nbsp;Alline Rotti","doi":"10.1002/jqs.3577","DOIUrl":"10.1002/jqs.3577","url":null,"abstract":"<div>\u0000 \u0000 <p>The diversity of South American deer genera during the Quaternary is considered one of the greatest in the world. However, this was established during the beginning of the twentieth century, when the recognition of new extinct deer taxa was based only on differences in antler morphology. Thus, South American extinct deer taxa need a detailed taxonomic revision, and this is the case of the Andean deer genera <i>Agalmaceros</i> and <i>Charitoceros</i>. First, both taxa are diagnosed by the presence of thorns in their antlers. Consequently, by taxonomic priority, <i>Agalmaceros</i> is a senior synonym of <i>Charitoceros</i>. Second, we recognize here that the thorns of the antlers of <i>Agalmaceros</i> are the symptom of a pathology that also affects some extant deer. Excluding the thorns of the antlers, the antler of <i>Agalmaceros</i> is identical to that of <i>Odocoileus virginianus</i>, indicating that <i>Agalmaceros</i> is a junior synonym to this extant deer. The recognition of epizootic hemorrhagic disease as the possible cause for the thorny antlers of Andean <i>O. virginianus</i> and the ample record of this affecting antlers in deer from the tropical Andes suggests that an epidemic occurred in this region in the Late Pleistocene. Before describing a new taxon, taxonomists must exhaust all possibilities to explain morphological variations. In this regard, this contribution provides an interesting, important and weakly explored area in paleontology, namely taxonomic revision under a paleopathology context. With the taxonomic invalidation of <i>Agalmaceros</i> and <i>Charitoceros</i> proposed here, the diversity of South American deer genera during the Pleistocene is poorer than previously established and includes 11 taxa – seven extant and four extinct.</p>\u0000 </div>","PeriodicalId":16929,"journal":{"name":"Journal of Quaternary Science","volume":"39 8","pages":"1200-1205"},"PeriodicalIF":1.9,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135684827","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":"A response to the comment on the article: Plant—insect interactions … (Pokorný and Borges, 2023), by Góis-Marques, Madeira and Menezes de Sequeira","authors":"Richard Pokorný,&nbsp;Paulo A. V. Borges","doi":"10.1002/jqs.3576","DOIUrl":"10.1002/jqs.3576","url":null,"abstract":"","PeriodicalId":16929,"journal":{"name":"Journal of Quaternary Science","volume":"39 2","pages":"345-347"},"PeriodicalIF":2.3,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135813730","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":"On the Anthropocene Event: a response to Thomas (2023)","authors":"Matthew Edgeworth","doi":"10.1002/jqs.3575","DOIUrl":"10.1002/jqs.3575","url":null,"abstract":"","PeriodicalId":16929,"journal":{"name":"Journal of Quaternary Science","volume":"39 1","pages":"4-5"},"PeriodicalIF":2.3,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jqs.3575","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135813491","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}

{"title":"Reef-wide and long-term skeletal growth records of the mountainous star coral (Orbicella faveolata) from Belize barrier and atoll reefs (Central America)","authors":"Simon Felix Zoppe,&nbsp;Eberhard Gischler","doi":"10.1002/jqs.3572","DOIUrl":"10.1002/jqs.3572","url":null,"abstract":"<p>Coral reefs are vulnerable marine ecosystems and reef-building corals are especially sensitive to the impacts of environmental change. Skeletal growth records of corals (Scleractinia) can be used as archives of ecological and climatological change. This study focusses on massive <i>Orbicella faveolata</i> coral skeletons from the Belize barrier and atoll reefs. In total, 11 drill cores from 10 coral colonies were studied. Their skeletal growth records range from 17 to 186 years and span time windows from the early 19th century to the beginning of the 21st century. Based on these records, master chronologies have been compiled for the entire 20th century. The data indicate uniform skeletal growth across the various reef environments of offshore Belize. Skeletal density is increasing reef-wide, whereas linear extension is declining, accompanied by a slightly declining calcification rate. Apparently, a more densely packed coral skeleton does not compensate for the reduced linear growth and calcification sufficiently in <i>O. faveolata</i> populations across the Belize reefs. The longest analysed coral sample contains &gt;186 years of skeletal growth, which exhibits periodicities of 40–80 years. Such cycle lengths likely reflect the Atlantic Multidecadal Oscillation, lending further support to coral skeletal records being valuable archives for long-term oceanographic change.</p>","PeriodicalId":16929,"journal":{"name":"Journal of Quaternary Science","volume":"39 1","pages":"145-162"},"PeriodicalIF":2.3,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jqs.3572","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135869494","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}

{"title":"Comment on: Plant–insect interactions in the Quaternary fossil record of the Azores Archipelago (Portugal). Pokorný and Borges (2023). Journal of Quaternary Science 38(4), 597–607","authors":"Carlos A. Góis-Marques,&nbsp;José Madeira,&nbsp;Miguel Menezes de Sequeira","doi":"10.1002/jqs.3573","DOIUrl":"10.1002/jqs.3573","url":null,"abstract":"","PeriodicalId":16929,"journal":{"name":"Journal of Quaternary Science","volume":"39 2","pages":"340-344"},"PeriodicalIF":2.3,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135863560","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":"Climate and atmospheric circulation during the Early and Mid-Holocene inferred from lake-carbonate oxygen-isotope records from western Ireland","authors":"Jonathan A. Holmes,&nbsp;Julia Tindall,&nbsp;Matthew Jones,&nbsp;Max Holloway,&nbsp;Neil Roberts,&nbsp;Ingo Feeser","doi":"10.1002/jqs.3571","DOIUrl":"10.1002/jqs.3571","url":null,"abstract":"<p>The Early to Mid-Holocene experienced marked climate change over the northern hemisphere mid-latitudes in response to changing insolation and declining ice volume. Oxygen isotopes from lake sediments provide a valuable climate proxy, encoding information regarding temperature, hydroclimate and moisture source. We present oxygen-isotope records from two lakes in western Ireland that are strongly influenced by the North Atlantic. Excellent replication between the records suggests they reflect regional, not local, influences. Carbonate oxygen-isotope values peaked at the start of the Holocene, between 11.2 and 11.1 cal ka <span>bp</span>, and then decreased markedly until 6 cal ka <span>bp</span> at both sites. Palaeoecological evidence supports only modest change in temperature or hydroclimate during this interval and we therefore explain the decrease primarily by a reduction in the oxygen-isotope composition of precipitation (δ¹⁸O_ppt). We show a similar decrease in δ¹⁸O values in a forward model of carbonate isotopes between 12–11 and 6–5 cal ka <span>bp.</span> However, the inferred reduction in δ¹⁸O_ppt between the Early and Mid-Holocene in the model is mainly linked to a decrease in the δ¹⁸O of the ocean source water from ice sheet melting whereas the lake carbonate isotope records are more consistent with changes in the transport pathway of moisture associated with atmospheric circulation change as the dominant cause.</p>","PeriodicalId":16929,"journal":{"name":"Journal of Quaternary Science","volume":"39 1","pages":"24-36"},"PeriodicalIF":2.3,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jqs.3571","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135146192","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}

{"title":"Limited extension of the MIS 2 proglacial lake in the Severnaya Dvina valley, south-eastern margin of the last Scandinavian Ice Sheet","authors":"Nataliya Zaretskaya,&nbsp;Anna Utkina,&nbsp;Dmitrii Baranov,&nbsp;Andrei Panin,&nbsp;Svetlana Trofimova,&nbsp;Aleksandra Simakova,&nbsp;Redzhep Kurbanov","doi":"10.1002/jqs.3570","DOIUrl":"10.1002/jqs.3570","url":null,"abstract":"<div>\u0000 \u0000 <p>The Severnaya Dvina River valley crosses the former south-eastern margin of the last Scandinavian Ice Sheet. Despite a long research history, there remains considerable controversy about the maximum ice-sheet extent and the expansion of proglacial lakes within the Severnaya Dvina fluvial system. The goal of this study was to address these issues using new material from the valleys of the Severnaya Dvina and the lower Vychegda, thereby contributing to an understanding of the history of the south-eastern sector of the last Scandinavian Ice Sheet and its periglacial areas. We studied a number of geological sections using radiocarbon and optically stimulated luminescence (OSL) dating, pollen and carpological analyses, and found that the Last Glacial Maximum (LGM) proglacial lake occupied the Severnaya Dvina valley between 20–19 ka and about 15.5 ka. The lake was localized within the proglacial isostatic depression and occupied only the Severnaya Dvina valley extending no further than the confluence of the Vychegda River, no more than 110 km from the edge of the ice sheet. The lake formation did not cause any drainage reorganization within and outside the Vychegda fluvial system. Given the small size of the lake and presence of the oldest OSL ages along the entire length of the former lake, we suggest that the onset of the proglacial lake marks the maximum extent of the ice sheet in the area. Consequently, the onset of the local LGM may be dated to 20–19 ka, somewhat earlier than assumed by most previous researchers. The LGM ice sheet boundary was located in the Severnaya Dvina valley downstream from the Vychegda confluence and did not extend into the Vychegda valley, despite previous suggestions. During deglaciation, the lake disappearance together with crustal rebound caused an incision episode in the Vychegda – Severnaya Dvina system and the formation of the Lateglacial alluvial terrace with relative height rising downstream due to the uneven rates of the postglacial uplift.</p>\u0000 </div>","PeriodicalId":16929,"journal":{"name":"Journal of Quaternary Science","volume":"39 1","pages":"82-101"},"PeriodicalIF":2.3,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135425659","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}