Blar i forfatter "Gielly, Ludovic"

Viser treff 1-18 av 18

    • 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 ...

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

      Clarke, Charlotte L.; 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 (<i>seda</i>DNA) 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 ...

    • Analysing diet of small herbivores : the efficiency of DNA barcoding coupled with high-throughput pyrosequencing for deciphering the composition of complex plant mixtures 

      Valentini, Alice; Soininen, Eeva Marjatta; Coissac, Eric; Ims, Rolf Anker; Miquel, Christian; Yoccoz, Nigel Gilles; Gielly, Ludovic; Brochmann, Christian; Brysting, Anne K.; Sønstebø, Jørn H.; Taberlet, Pierre (Journal article; Tidsskriftartikkel; Peer reviewed, 2009-08-20)
      Background: In order to understand the role of herbivores in trophic webs, it is essential to know what they feed on. Diet analysis is, however, a challenge in many small herbivores with a secretive life style. In this paper, we compare novel (high-throughput pyrosequencing) DNA barcoding technology for plant mixture with traditional microhistological method. We analysed stomach contents of two ...

    • Arctic Small Rodents Have Diverse Diets and Flexible Food Selection 

      Soininen, Eeva M; Ravolainen, Virve; Bråthen, Kari Anne; Yoccoz, Nigel; Gielly, Ludovic; Ims, Rolf Anker (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      The ecology of small rodent food selection is poorly understood, as mammalian herbivore food selection theory has mainly been developed by studying ungulates. Especially, the effect of food availability on food selection in natural habitats where a range of food items are available is unknown. We studied diets and selectivity of grey-sided voles (Myodes rufocanus) and tundra voles (Microtus oeconomus), ...

    • Cascading effects of moth outbreaks on subarctic soil food webs 

      Calderón-Sanou, Irene; Münkemüller, Tamara; Zinger, Lucie; Schimann, Heidy; Yoccoz, Nigel; Gielly, Ludovic; Foulquier, Arnaud; Hedde, Mickael; Ohlmann, Marc; Roy, Mélanie; Si-Moussi, Sara; Thuiller, Wilfred (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-23)
      The increasing severity and frequency of natural disturbances requires a better understanding of their effects on all compartments of biodiversity. In Northern Fennoscandia, recent large-scale moth outbreaks have led to an abrupt change in plant communities from birch forests dominated by dwarf shrubs to grass-dominated systems. However, the indirect effects on the belowground compartment remained ...

    • 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 ...

    • Highly overlapping winter diet in two sympatric lemming species revealed by DNA metabarcoding 

      Soininen, Eeva M; Gauthier, Gilles; Bilodeau, Frederic; Berteaux, Dominique; Gielly, Ludovic; Taberlet, Pierre; Gussarova, Galina; Bellemain, Eva; Hassel, Kristian; Stenøien, Hans K.; Epp, Laura; Schrøder-Nielsen, Audun; Brochmann, Christian; Yoccoz, Nigel Gilles (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-01-30)
      Sympatric species are expected to minimize competition by partitioning resources, especially when these are limited. Herbivores inhabiting the High Arctic in winter are a prime example of a situation where food availability is anticipated to be low, and thus reduced diet overlap is expected. We present here the first assessment of diet overlap of high arctic lemmings during winter based on DNA ...

    • 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 ...

    • Lake sedimentary DNA accurately records 20th Century introductions of exotic conifers in Scotland 

      Sjøgren, Per Johan; Edwards, Mary Elizabeth; Gielly, Ludovic; Langdon, Cathrine; Croudace, I.W.; Merkel, Marie Kristine Føreid; Thierry, Fonville; Alsos, Inger Greve (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-09-28)
      Sedimentary DNA (sedDNA) has recently emerged as a new proxy for reconstructing past vegetation, but its taphonomy, source area and representation biases need better assessment. We investigated how sedDNA in recent sediments of two small Scottish lakes reflects a major vegetation change, using well-documented 20th Century plantations of exotic conifers as an experimental system. We used next-generation ...

    • Last Glacial Maximum environmental conditions at Andøya, northern Norway; evidence for a northern ice-edge ecological “hotspot” 

      Alsos, Inger Greve; Sjögren, Per; Brown, Antony G.; Gielly, Ludovic; Merke, Marie Kristine Føreid; Paus, Aage; Lammers, Youri; Edwards, Mary E.; Alm, Torbjørn; Leng, Melanie; Goslar, Tomasz; Langdon, Catherine T.; Bakke, Jostein; van der Bilt, Willem G.M. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-05)
      Andøya on the NW coast of Norway is a key site for understanding the Last Glacial Maximum (LGM) in northern Europe. Controversy has arisen concerning the local conditions, especially about the timing and extent of local glacial cover, maximum July temperatures and whether pine and/or spruce could have grown there. We reviewed all existing data and add newly analysed ancient sedimentary DNA ...

    • Last Glacial Maximum environmental conditions at Andøya, northern Norway; evidence for a northern ice-edge ecological “hotspot” 

      Alsos, Inger Greve; Sjøgren, Per Johan E; Brown, Antony; Gielly, Ludovic; Merkel, Marie Føreid; Paus, Aage; Lammers, Youri; Edwards, Mary E.; Alm, Torbjørn; Leng, Melanie; Goslar, Tomasz; Langdon, Cathrine; Bakke, Jostein; Van Der Bilt, Willem (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-05)
      Andøya on the NW coast of Norway is a key site for understanding the Last Glacial Maximum (LGM) in northern Europe. Controversy has arisen concerning the local conditions, especially about the timing and extent of local glacial cover, maximum July temperatures and whether pine and/or spruce could have grown there. We reviewed all existing data and add newly analysed ancient sedimentary DNA ...

    • Metabarcoding data reveal vertical multitaxa variation in topsoil communities during the colonization of deglaciated forelands 

      Guerrieri, Alessia; Carteron, Alexis; Bonin, Aurélie; Marta, Silvio; Ambrosini, Roberto; Caccianiga, Marco; Cantera, Isabel; Compostella, Chiara; Diolaiuti, Guglielmina; Fontaneto, Diego; Gielly, Ludovic; Gili, Fabrizio; Gobbi, Mauro; Poulenard, Jerome; Taberlet, Pierre Robert Michel; Zerboni, Andrea; Thuiller, Wilfried; Ficetola, Gentile Francesco (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-23)
      Ice-free areas are expanding worldwide due to dramatic glacier shrinkage and are undergoing rapid colonization by multiple lifeforms, thus representing key environments to study ecosystem development. It has been proposed that the colonization dynamics of deglaciated terrains is different between surface and deep soils but that the heterogeneity between communities inhabiting surface and deep soils ...

    • Not only mosses: lemming winter diets as described by DNA metabarcoding 

      Soininen, Eeva M; Zinger, Lucie; Gielly, Ludovic; Yoccoz, Nigel Gilles; Henden, John-André; Ims, Rolf Anker (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-04-01)
      The temporal dynamics of most tundra food webs are shaped by the cyclic population dynamics of lemmings. While processes during winter may be behind the recent disruptions of lemming cycles, lemming winter ecology is poorly known. We present here the first DNA metabarcoding data on the winter diet of Norwegian lemmings (Lemmus lemmus), based on feces collected after a winter of population ...

    • Plant DNA in sediments: to which degree do they represent the flora? 

      Alsos, Inger Greve; Coissac, Eric; Edwards, Mary E.; Merkel, Marie Kristine Føreid; Gielly, Ludovic; Sjögren, Per; Taberlet, Pierre; Yoccoz, Nigel Gilles (Conference object; Konferansebidrag, 2015-05)

    • Plant DNA metabarcoding of lake sediments: How does it represent the contemporary vegetation 

      Alsos, Inger Greve; Lammers, Youri; Yoccoz, Nigel Gilles; Jørgensen, Tina; Sjögren, Per; Gielly, Ludovic; Edwards, Mary E. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-04-17)
      Metabarcoding of lake sediments have been shown to reveal current and past biodiversity, but little is known about the degree to which taxa growing in the vegetation are represented in environmental DNA (eDNA) records. We analysed composition of lake and catchment vegetation and vascular plant eDNA at 11 lakes in northern Norway. Out of 489 records of taxa growing within 2 m from the lake shore, ...

    • Sedimentary ancient DNA from Lake Skartjørna, Svalbard: Assessing the resilience of arctic flora to Holocene climate change 

      Alsos, Inger Greve; Sjögren, Per Johan E.; Edwards, Mary E.; Landvik, Jon Y.; Gielly, Ludovic; Forwick, Matthias; Coissac, Eric; Brown, Antony G; Jakobsen, Leif Vidar; Merkel, Marie Kristine Føreid; Pedersen, Mikkel Winter (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-11-11)

    • Shedding new light on the diet of Norwegian lemmings: DNA metabarcoding of stomach content 

      Soininen, Eeva Marjatta; Zinger, Lucie; Gielly, Ludovic; Bellemain, Eva; Bråthen, Kari Anne; Brochmann, Christian; Epp, Laura; Gusarova, Galina; Hassel, Kristian; Henden, John-André; Killengreen, Siw Turid; Rämä, Teppo; Stenøien, Hans; Yoccoz, Nigel; Ims, Rolf Anker (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Lemmings are key herbivores in many arctic food webs, and their population dynamics have major impacts on the functioning of tundra systems. However, current knowledge of lemming diet is limited, hampering evaluation of lemming–vegetation interactions. This lack of knowledge is mainly due to methodological challenges, as previously used microhistological methods result in large proportions of poorly ...

    • Sources of variation in small rodent trophic niche: New insights from DNA metabarcoding and stable isotope analysis 

      Soininen, Eeva M; Ehrich, Dorothee; Lecomte, Nicolas; Yoccoz, Nigel Gilles; Tarroux, Arnaud; Berteaux, Dominique; Gauthier, Gilles; Gielly, Ludovic; Brochmann, Christian; Gussarova, Galina; Ims, Rolf Anker (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-05-15)