Blar i forfatter "Brown, Antony Gavin"
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75. Lake Tenndammen, Colesdalen, Nordenskiöld Land, western Svalbard (Spitsbergen) archipelago
Poliakova, Anastasia; Brown, Antony Gavin; Goslar, Tomasz; Alsos, Inger Greve (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-16)The study site, small (0.15 ha), shallow (mean depth of 1.5 m; for details see Poliakova et al. 2024) lake Tenndammen(N78°06.118′; E15°02.024′, altitude 5 m above sea level [a.s.l.]) is located about 1 km away from the Greenland Sea shore in the Colesdalen (Coles valley), Svalbard (Spitsbergen, Шпицберген). The research area is known as one of Svalbard’s biodiversity hotspots, with the highest number ... -
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 ... -
Environmental DNA of aquatic macrophytes: The potential for reconstructing past and present vegetation and environments
Revéret, Aloïs Nicolas; Rijal, Dilli Prasad; Heintzman, Peter D.; Brown, Antony Gavin; Stoof-Leichsenring, Kathleen R.; Alsos, Inger Greve (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-29)1. Environmental DNA is increasingly being used to reconstruct past and present biodiversity including from freshwater ecosystems. Macrophytes are especially good environmental indicators, thus their environmental DNA palaeorecord might shed light on past postglacial environments.<p> <p>2. Here, we first review and compare studies that use metagenomics, targeted capture, and various barcoding ... -
Exotic pollen in sediments from the high Arctic Lake Tenndammen, Svalbard archipelago: diversity, sources, and transport pathways
Poliakova, Anastasia; Brown, Antony Gavin; Alsos, Inger Greve (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-01-18)We analysed the pollen and spores extracted from 73 samples of lacustrine sediments from Colesdalen in Svalbard (Lake Tenndammen) as well as 10 soil samples collected from the lake’s shores. In total, 56 pollen taxa were recorded from the sediments spanning the last 800 years, whilst 35 pollen types were found in the soil samples. Pollen was categorised as (i) regional (from Svalbard); (ii) ... -
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 ... -
Holocene summer temperature reconstruction from plant sedaDNA and chironomids from the northern boreal forest
Mayfield, Roseanna J.; Rijal, Dilli Prasad; Heintzman, Peter D.; Langdon, Peter G.; Karger, Dirk N.; Brown, Antony Gavin; Alsos, Inger Greve (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-30)Climate-induced ecotonal shifts are expected to occur in the (sub)arctic and boreal zones in the coming decades. Understanding how these ecosystems have previously responded to climate change can provide greater insight into how ecosystems may develop under existing and future pressures. Here we present a Holocene record from Lake Horntjernet, a lake on the northern edge of the boreal forest in ... -
Human-environment interactions in the Mesolithic – The case of site Paliwodzizna 29, a lakeside site in central Poland
Osipowicz, Grzegorz; Badura, Monika; Brown, Antony Gavin; Hudson, Samuel M.; Jankowski, Michał; Makowiecki, Daniel; Noryśkiewicz, Agnieszka M.; Orłowska, Justyna; Sykuła, Marcin; Weckwerth, Piotr (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-10)Human-environmental relations before agriculture can be revealed at archaeological sites through multi-method palaeoenvironmental studies, particularly at sites which have both dryland and wetland areas. Paliwodzizna 29 is such as site, being a series of pits and hearths at the edge of Lake Grodno in Central Poland. A combination of faunal analysis, lithostratigraphy, pollen, diaspores, charcoal and ... -
Lynchet-Type Terraces, Loess, and Agricultural Resilience on Chalk Landscapes in the UK and Belgium
Pears, Ben; Lang, Andreas; Fallu, Daniel Joseph; Roberts, Mark; Jacques, David; Snape, Lisa; Bahl, Chiara; Oost, Kristof V.A.N.; Zhao, Pengzhi; Tarolli, Paolo; Cucchiaro, Sara; Walsh, Kevin; Brown, Antony Gavin (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-04-22)Lynchets, often the defining component of historic agricultural landscapes in northern Europe, are generally associated with soft-limestone geologies and are particularly well developed on loess-mantled landscapes. To understand their formation and chronology, the authors present their geoarchaeological analyses of lynchet soils and loess deposits at Blick Mead and Charlton Forest in southern England, ... -
Rapid laminated clastic alluviation associated with increased Little Ice Age flooding co-driven by climate variability and historic land-use in the middle Severn catchment, UK
Pears, Ben; Brown, Antony Gavin; Toms, Phillip S; Wood, Jamie; Pennington, Benjamin T; Jones, Richard (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-06)The analysis of exceptionally well-preserved visible clastic laminations in deep alluvial sediments at Kempsey, Worcestershire (UK), allows a new highresolution analysis of late-Holocene flood-history in the largest UK catchment, as well as local human response. At the sample site over 4.5m of sandy-silt overbank-alluvium accumulated on the floodplain and optically stimulated luminescence (OSL) ... -
SedaDNA shows that transhumance of domestic herbivores has enhanced plant diversity over the Holocene in the Eastern European Alps
Zetter, Scarlett Poppy Saunders Hovey; Garces Pastor, Sandra; Lammers, Youri; Brown, Antony Gavin; Walsh, Kevin; Goslar, Tomasz; Lavergne, Sébastien; Coissac, Eric; Tribsch, Andreas; Heintzman, Peter; Alsos, Inger Greve (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-12-30)The Eastern European Alps boasts highly biodiverse ecosystems and a rich archaeological history. However, there is limited research on the enduring impacts of historical climate change and human activities on plant biodiversity in this region. Using sedimentary ancient DNA, we reconstructed plant and animal dynamics from 8500years before present (ka BP) around Großer Winterleitensee (Zirbitzkogel, ... -
Using ancient sedimentary DNA to forecast ecosystem trajectories under climate change
Alsos, Inger Greve; Boussange, Victor; Rijal, Dilli Prasad; Beaulieu, Marieke-Lise; Brown, Antony Gavin; Herzschuh, Ulrike; Svenning, Jens-Christian; Pellissier, Loïc (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-27)Ecosystem response to climate change is complex. In order to forecast ecosystem dynamics, we need high-quality data on changes in past species abundance that can inform process-based models. Sedimentary ancient DNA (sedaDNA) has revolutionised our ability to document past ecosystems' dynamics. It provides time series of increased taxonomic resolution compared to microfossils (pollen, spores), and ...