Ernst Johnson, Carl Regnéll, Peter D. Heintzman, Anna Linderholm
{"title":"The potential of lacustrine sedimentary ancient DNA for revealing human postglacial recolonization patterns in northern Sweden – a review","authors":"Ernst Johnson, Carl Regnéll, Peter D. Heintzman, Anna Linderholm","doi":"10.1111/bor.12660","DOIUrl":null,"url":null,"abstract":"<p>The postglacial recolonization of Fennoscandian flora and fauna was initiated when the land became accessible as the last ice sheet retreated. In northern Sweden, plants are represented in pollen and macrofossil records, but there is no genetic evidence from the first plants, animals or humans in the region, mainly owing to an absence of osteological finds. The questions of who the first postglacial peoples, or pioneers, were and where they came from therefore remain unanswered. Previous palaeogenomic analyses from remains from adjacent regions have suggested that two main routes into Sweden could have been taken by the pioneers, one from the SW through modern-day Denmark and Norway, and one from the east via Finland. However, no direct genetic evidence from the pioneers of northern Sweden exists. Modern technology has provided the ancient DNA field with an updated toolbox that could allow for novel approaches for revealing the origin and genetic profiles of the first Scandinavians, of which sedimentary ancient DNA (sedaDNA) is well placed. Lake sediments are now a routine source of sedaDNA that have been used to record environmental changes and detect species that lived in the surrounding lake catchment. This review will provide context and background, a summary of the ground-breaking studies within the field of lacustrine sedaDNA, and relevant methodology to address the scientific questions at hand. We conclude that the field is mature enough to provide insight into the origins and arrival times of the first postglacial humans that migrated into northern Sweden.</p>","PeriodicalId":9184,"journal":{"name":"Boreas","volume":"53 3","pages":"347-359"},"PeriodicalIF":2.4000,"publicationDate":"2024-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/bor.12660","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Boreas","FirstCategoryId":"89","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/bor.12660","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"GEOGRAPHY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The postglacial recolonization of Fennoscandian flora and fauna was initiated when the land became accessible as the last ice sheet retreated. In northern Sweden, plants are represented in pollen and macrofossil records, but there is no genetic evidence from the first plants, animals or humans in the region, mainly owing to an absence of osteological finds. The questions of who the first postglacial peoples, or pioneers, were and where they came from therefore remain unanswered. Previous palaeogenomic analyses from remains from adjacent regions have suggested that two main routes into Sweden could have been taken by the pioneers, one from the SW through modern-day Denmark and Norway, and one from the east via Finland. However, no direct genetic evidence from the pioneers of northern Sweden exists. Modern technology has provided the ancient DNA field with an updated toolbox that could allow for novel approaches for revealing the origin and genetic profiles of the first Scandinavians, of which sedimentary ancient DNA (sedaDNA) is well placed. Lake sediments are now a routine source of sedaDNA that have been used to record environmental changes and detect species that lived in the surrounding lake catchment. This review will provide context and background, a summary of the ground-breaking studies within the field of lacustrine sedaDNA, and relevant methodology to address the scientific questions at hand. We conclude that the field is mature enough to provide insight into the origins and arrival times of the first postglacial humans that migrated into northern Sweden.
冰川期后,随着最后一块冰原的消退,这片土地变得可以进入,芬诺斯坎迪亚动植物群开始重新定居。在瑞典北部,植物在花粉和大型化石记录中都有体现,但没有该地区最早的植物、动物或人类的遗传证据,这主要是由于缺乏骨骼方面的发现。因此,关于谁是冰川期后的第一批人或先驱者以及他们来自哪里的问题仍然没有答案。以前对邻近地区遗骸进行的古基因组分析表明,先驱者进入瑞典可能有两条主要路线,一条是从西南部经过现代的丹麦和挪威,另一条是从东部经过芬兰。然而,瑞典北部的先民并没有直接的遗传证据。现代技术为古 DNA 领域提供了一个更新的工具箱,可以用新的方法揭示第一批斯堪的纳维亚人的起源和遗传特征,其中沉积古 DNA(sedaDNA)是一个很好的工具。目前,湖泊沉积物是沉积 DNA 的常规来源,已被用于记录环境变化和检测生活在周围湖泊集水区的物种。本综述将介绍相关背景,总结湖泊沉积 DNA 领域的突破性研究,以及解决当前科学问题的相关方法。我们的结论是,该领域已经足够成熟,可以让我们深入了解第一批迁徙到瑞典北部的冰川期后人类的起源和抵达时间。
期刊介绍:
Boreas has been published since 1972. Articles of wide international interest from all branches of Quaternary research are published. Biological as well as non-biological aspects of the Quaternary environment, in both glaciated and non-glaciated areas, are dealt with: Climate, shore displacement, glacial features, landforms, sediments, organisms and their habitat, and stratigraphical and chronological relationships.
Anticipated international interest, at least within a continent or a considerable part of it, is a main criterion for the acceptance of papers. Besides articles, short items like discussion contributions and book reviews are published.