Climate and water-table levels regulate peat accumulation rates across Europe

PLOS One | https://doi.org/10.1371/journal.pone.0327422 July 23, 2025 5 / 16 Table 1. European study sites. Site number Site name Region Country Latitude Longitude Reference 1 Cloonoolish Britain & Ireland Ireland 53.1865 −8.2569 Blundell et al. (2008) Journal of Quaternary Science 23, 59–71. 2 Ballyduff Britain & Ireland Ireland 53.0807 −7.9925 Swindles et al. (2013) Earth Science Reviews 126, 300–320. 3 Derragh Britain & Ireland Ireland 53.7667 −7.4083 Langdon et al. (2012) Quaternary International 268, 145–155. 4 Ardkill Britain & Ireland Ireland 53.3653 −6.9532 Blundell et al. (2008) Journal of Quaternary Science 23, 59–71. 5 Dead Island Britain & Ireland Ireland 54.8862 −6.5487 Swindles et al. (2010) Quaternary Science Reviews 29, 1577–1589. 6 Slieveanorra Britain & Ireland Ireland 55.0848 −6.1921 Swindles et al. (2010) Quaternary Science Reviews 29, 1577–1589. 7 Butterburn Britain & Ireland England 55.0875 −2.5036 Mauquoy et al. (2008) Journal of Quaternary Science 23, 745–763. 8 Malham Britain & Ireland England 54.0964 −2.1750 Turner et al. (2014) Quaternary Science Reviews 84, 65–85. 9 Keighley Britain & Ireland England 54.4253 −2.0369 Blundell et al. (2016) Palaeogeography, Palaeo- climatology, Palaeoecology 443, 216–229. 10 Praz-Rodet Continental Europe Switzerland 46.5667 6.1736 Mitchell et al. (2001) The Holocene 11, 65–80. 11 Combe des Amburnex Continental Europe Switzerland 46.5397 6.2317 Sjögren & Lamentowicz (2008) Vegetation His- tory and Archaeobotany 17, 185–197.

12 Mauntschas Continental Europe Switzerland 46.4900 9.8544 van der Knaap et al. (2011) Quatermary Science Reviews 30, 3467–3480. 13 Lille Vildmose Scandinavia Denmark 56.8391 10.1896 Mauquoy et al. (2008) Journal of Quaternary Science 23, 745–763. 14 Izery Continental Europe Poland 50.8519 15.3602 Kajukało et al. (2016) European Journal of Proti- stology 55, 165–180. 15 Słowińskie Continental Europe Poland 54.3619 16.4785 Lamentowicz et al. (2009) Boreas 38, 214–229. 16 Bagno Kusowo Continental Europe Poland 53.8078 16.5872 Lamentowicz et al. (2015) Palaeogeography, Palaeoclimatology, Palaeoecology 418, 261–277. 17 Åkerlänna Römosse Scandinavia Sweden 60.0167 17.3667 van der Linden et al. (2008) Palaeogeography, Palaeoclimatology, Palaeoecology 262, 1–31. 18 Jelenia Wyspa Continental Europe Poland 53.5918 17.9821 Lamentowicz et al. (2007) The Holocene 17, 1185–1196. 19 Stążki Continental Europe Poland 54.4244 18.0833 Lamentowicz et al. (2011) Studia Quaternaria 28, 3–16. 20 Linje Continental Europe Poland 53.1880 18.3098 Marcisz et al. (2015) Quaternary Science Reviews 112, 138–152. 21 Stordalen I Scandinavia Sweden 68.3568 19.0484 Gałka et al. (2017) Permafrost and Periglacial Processes 28, 589–604. 22 Stordalen II Scandinavia Sweden 68.3568 19.0484 Gałka et al. (2017) Permafrost and Periglacial Processes 28, 589–604. 23 Lappmyran Scandinavia Sweden 64.1647 19.5828 van der Linden et al. (2008) Palaeogeography, Palaeoclimatology, Palaeoecology 258, 1–27. 24 Gązwa Continental Europe

Poland 53.8726 21.2201 Gałka et al. (2015) The Holocene 25, 421–434. 25 Mechacz Continental Europe Poland 54.3314 22.4419 Gałka et al. (2017) Quaternary Science Reviews 156, 90–106. 26 Kontolanrahka NE Europe Finland 60.7833 22.7833 Väliranta et al. (2007) The Holocene 17, 1093–1107. (Continued)