• A 24,000-year ancient DNA and pollen record from the Polar Urals reveals temporal dynamics of arctic and boreal plant communities 

      Clarke, Charlotte; Alsos, Inger Greve; Edwards, Mary E.; Paus, Aage; Gielly, Ludovic; Haflidason, Haflidi; Mangerud, Jan; Regnéll, Carl; Hughes, Paul D.M.; Svendsen, John-Inge; Bjune, Anne Elisabeth (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-18)
      A 24,000-year record of plant community dynamics, based on pollen and ancient DNA from the sediments (sedaDNA) of Lake Bolshoye Shchuchye in the Polar Ural Mountains, provides detailed information on the flora of the Last Glacial Maximum (LGM) and also changes in plant community composition and dominance. It greatly improves on incomplete records from short and fragmented stratigraphic sequences ...
    • Clitellate worms (Annelida) in late-glacial and Holocene sedimentary DNA records from the Polar Urals and northern Norway 

      Lammers, Youri; Clarke, Charlotte; Erséus, Christer; Brown, Antony Gavin; Edwards, Mary Elizabeth; Gielly, Ludovic; Haflidason, Haflidi; Mangerud, Jan; Rota, E; Svendsen, John-Inge; Alsos, Inger Greve (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-26)
      While there are extensive macro‐ and microfossil records of a range of plants and animals from the Quaternary, earthworms and their close relatives amongst annelids are not preserved as fossils and therefore the knowledge of their past distributions is limited. This lack of fossils means that clitellate worms (Annelida) are currently underused in palaeoecological research, even though they can provide ...
    • Holocene floristic diversity and richness in northeast Norway revealed by sedimentary ancient DNA (sedaDNA) and pollen 

      Clarke, Charlotte; Edwards, Mary Elizabeth; Brown, Antony Gavin; Gielly, Ludovic; Lammers, Youri; Heintzman, Peter D.; Murguzur, Francisco Javier Ancin; Bråthen, Kari Anne; Goslar, Tomasz; Alsos, Inger Greve (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-30)
      We present a Holocene record of floristic diversity and environmental change for the central Varanger Peninsula, Finnmark, based on ancient DNA extracted from the sediments of a small lake (<i>sed</i>aDNA). The record covers the period c. 10 700 to 3300 cal. a BP and is complemented by pollen data. Measures of species richness, sample evenness and beta diversity were calculated based on <i>sed</i>aDNA ...
    • How well can near infrared reflectance spectroscopy (NIRS) measure sediment organic matter in multiple lakes? 

      Ancin-Murguzur, Francisco Javier; Brown, Antony G.; Clarke, Charlotte; Sjøgren, Per; Svendsen, John Inge; Alsos, Inger Greve (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-05-19)
      Loss-on-ignition (LOI) is the most widely used measure of organic matter in lake sediments, a variable related to both climate and land-use change. The main drawback for conventional measurement methods is the processing time and hence high labor costs associated with high-resolution analyses. On the other hand, broad-based near infrared reflectance spectroscopy (NIRS) is a time and cost efficient ...
    • How well can near infrared reflectance spectroscopy (NIRS) measure sediment organic matter in multiple lakes? 

      Ancin Murguzur, Francisco Javier; Brown, Antony; Clarke, Charlotte; Sjøgren, Per Johan E; Svendsen, John-Inge; Alsos, Inger Greve (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-05-19)
      Loss-on-ignition (LOI) is the most widely used measure of organic matter in lake sediments, a variable related to both climate and land-use change. The main drawback for conventional measurement methods is the processing time and hence high labor costs associated with high-resolution analyses. On the other hand, broad-based near infrared reflectance spectroscopy (NIRS) is a time and cost efficient ...
    • Larix species range dynamics in Siberia since the Last Glacial captured from sedimentary ancient DNA 

      Schulte, Luise; Meucci, Stefano; Stoof-Leichsenring, Kathleen R.; Heitkam, Tony; Schmidt, Nicola; von Hippel, Barbara; Andreev, Andrei A.; Diekmann, Bernhard; Biskaborn, Boris K.; Wagner, Bernd; Melles, Martin; Pestryakova, Lyudmila A.; Alsos, Inger Greve; Clarke, Charlotte; Krutovsky, Konstantin V.; Herzschuh, Ulrike (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-06-09)
      Climate change is expected to cause major shifts in boreal forests which are in vast areas of Siberia dominated by two species of the deciduous needle tree larch (Larix). The species differ markedly in their ecosystem functions, thus shifts in their respective ranges are of global relevance. However, drivers of species distribution are not well understood, in part because paleoecological data ...