Herbarium records in Arctic dwarf shrub dendrochronology: Methodological approach and perspectives |
| |
| Affiliation: | 1. Institute of Earth Sciences, Faculty of Natural Sciences, University of Silesia in Katowice, Będzińska 60, Sosnowiec 41-200, Poland;2. Institute of Geography and Regional Development, University of Wroclaw, Plac Uniwersytecki 1, Wrocław 50-137, Poland;1. Research Institute of Natural and Technological Sciences, Vytautas Magnus University, Kaunas, Lithuania,;2. The Saxo Institute, University of Copenhagen, Copenhagen, Denmark;3. Department of Geography, Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia;4. Laboratory of Nuclear Geophysics and Radioecology, Nature Research Centre, Vilnius, Lithuania;5. Dendrochronological Laboratory, Institute of Latvian History, University of Latvia, Riga, Latvia;1. Siberian Federal University, 660041 Krasnoyarsk, Russia;2. Swiss Federal Institute for Forest, Snow and Landscape Research WSL, CH-8903 Birmensdorf, Switzerland;3. V.N. Sukachev Institute of Forest SB RAS, Federal Research Centre, 660036 Krasnoyarsk, Russia;4. West-Siberian Department of the V.N. Sukachev Institute of Forest SB RAS, 630082 Novosibirsk, Russia;5. College of Life Sciences, Zhejiang University, Hangzhou 310058, China;6. School of Geography and Ocean Science, Nanjing University, Nanjing 210023, China;1. Kazan Federal University, 18 Kremlyovskaya St., 420008 Kazan, Russia;2. Siberian Federal University, 79 Svobodny Pr., 660041 Krasnoyarsk, Russia;3. Ural Federal University, Ural Institute of Humanities, 51 Lenina St., 620002, Ekaterinburg, Russia;4. Institute of Plant and Animal Ecology UB RAS, 202/3 8-Marta St., 620144 Ekaterinburg, Russia |
| |
| Abstract: | Our work aims to investigate whether herbaria resources can be used for the extension of Arctic dwarf shrub chronologies. The current use of herbaria reaches far beyond their initially aims; among the new applications, phenology observations and conservation biology can be mentioned. However, to this date, no studies on the use of herbarium specimens for dendrochronological research have been published. Examples of perennial plants from herbarium sheets that could potentially be used for such studies are dwarf shrubs, samples of which often consist of whole specimens, including the root system, the root collar and branches. Here, we present a protocol for the selection and processing of historical material. Based on the collections from Kew and Copenhagen, which are among of the largest herbaria with Arctic plants, a database of 25 areas from the Atlantic sector of the Arctic was created. Material from the following most common species was collected: grey willow (Salix glauca L.), polar willow (Salix polaris Wahlenb.), dwarf willow (Salix herbacea L.), net-leaved willow (Salix reticulata L.), arctic willow (Salix arctica Pall.), mountain avens (Dryas octopetala L.), dwarf birch (Betula nana L.). We present the preliminary results of a case study using historical samples of Salix arctica from the Thule (Qaanaaq) area, NW Greenland. Dwarf shrubs can commonly reach the age of 80–100 years or beyond, while herbaria resources may allow the extension of such series over the last centuries. Therewith, these resources may provide an excellent proxy data source on the changing natural environment beyond the northern and upper tree limits, where well-replicated proxy time-series remain sparse. |
| |
| Keywords: | Arctic Historical collection Herbarium specimen Dwarf shrubs Arctic willow, dendrochronology |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
