Responses of different herb life-history groups to a dominant shrub species along a dune stabilization gradient |
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| Institution: | 1. Yanchi Research Station, School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China;2. University of Bordeaux, UMR 5805 EPOC, Avenue des Facultés, 33405 Talence cedex, France;3. Engineering Research Centre of Forestry Ecological Engineering, Ministry of Education, Beijing Forestry University, Beijing, China;4. Key Laboratory of State Forestry Administration on Soil and Water Conservation, Beijing Forestry University, Beijing, China;1. Division of Conservation Biology, Vegetation- and Landscape Ecology, Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, 1030 Vienna, Austria;2. Environmental Agency of Austria, Spittelauer Lände 5, A-1090 Vienna, Austria;3. V.I.N.C.A – Vienna Institute for Nature Conservation & Analyses, Giessergasse 6/7, A-1090 Vienna, Austria;4. Department of Botany and Zoology, Faculty of Science, Masaryk University, Kotlá?ská 2, 61137 Brno, Czech Republic;5. Department of Environmental Biology, “Sapienza”, University of Roma, Botanical Garden, Largo Cristina di Svezia 24, 00165 Roma, Italy;6. Research Group for Biological Adaptation, Hungarian Academy of Sciences, University of Pécs, Ifjúság u. 6, HU-7601 Pécs, Hungary;7. Department of Silviculture, Transilvania University of Bra?ov, 1 ?irul Beethoven, 500123 Bra?ov, Romania;8. Institute of Biology, Martin Luther University Halle-Wittenberg, Kirchtor 1, 06108 Halle, Germany;9. Department of Botany, Institute of Environmental Biology, University of Wroc?aw, Kanonia 6/8, 50-328 Wroc?aw, Poland;10. Institute of Biology, Scientific Centre of Slovenian Academy of Sciences and Arts, Novi trg 2, 1000 Ljubljana, Slovenia;11. Faculty of Forestry, University of Zagreb, Sveto?imunska 25, 10000 Zagreb, Croatia;12. Faculty of Geotechnical Engineering, University of Zagreb, Hallerova aleja 7, 42000 Vara?din, Croatia;13. Institute of Botany, Slovak Academy of Sciences, Dubravska cesta 9, 845 23 Bratislava, Slovakia;1. Département de biologie, Ecole Normale Supérieure de Lyon, 15 parvis René Descartes, 69342 Lyon, France;2. IEES-Paris (CNRS, UPMC, IRD, INRA, UPEC), UPMC 4 place Jussieu, 75252 Paris Cedex 05, France;3. UMR ECOSYS, INRA, AgroParisTech, Université Paris-Saclay, 78026 Versailles, France;1. Department of Biology, Terrestrial Ecology Unit (TEREC), Ghent University, K.L. Ledeganckstraat 35, 9000 Gent, Belgium;2. Department of Environment, Forest & Nature Lab, Ghent University, Geraardsbergsesteenweg 267, 9090 Gontrode, Belgium;3. Department Pathology, Bacteriology and Avian Diseases, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium;1. Forest & Nature Lab, Faculty of Bioscience Engineering, Ghent University, Melle-Gontrode, Belgium;2. Isotope Bioscience Laboratory-ISOFYS, Faculty of Bioscience Engineering, Ghent University, Gent, Belgium;3. Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, Alnarp, Sweden;4. Department of Physical Geography, Stockholm University, Stockholm, Sweden;5. Plant Biodiversity Lab, University of Picardy Jules Verne, Amiens, France;6. Vegetation Ecology and Conservation Biology, Faculty of Biology/Chemistry (FB 02), University of Bremen, Bremen, Germany;7. Department of Botany, University of Tartu, Tartu, Estonia;8. Leibniz Centre for Agricultural Landscape Research (ZALF), Müncheberg, Germany;9. Department of Ecology, Faculty of Biology and Environmental Protection, University of Silesia, Katowice, Poland;10. School of Natural Sciences, Technology and Environmental Studies, Södertörn University, Huddinge, Sweden;1. Agroécologie, AgroSup Dijon, INRA, Univ. Bourgogne Franche-Comté, F-21000 Dijon, France;2. UMR CNRS 6282 Biogéosciences, Equipe Ecologie Evolutive, Université Bourgogne Franche-Comté, 6 bd Gabriel, 21000 Dijon, France;1. Graduate School of Agricultural Science, Tohoku University, 232-3, Yomogida, Naruko-Onsen, Osaki, Miyagi 989-6711, Japan;2. Graduate School of Environment and Information Sciences, Yokohama National University, 79-7 Tokiwadai, Hodogaya, Yokohama 240-8501, Japan;3. Department of Biology, School of Arts and Sciences, National University of Mongolia, Zaluuchuudiin Urgun Chuluu-1, P.O. Box 377, Ulaanbaatar 210646, Mongolia |
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| Abstract: | Shrubs play a pivotal role in reversing desertification and in promoting ecological rehabilitation in severe environments. However, how the interactions between shrubs and their understorey species change during restoration remains unclear. Here, we report the results of an observational study conducted in the Mu Us Desert of northern China. This study explored how dune stabilization and the size of individual shrubs affect shrub–herb interactions. In particular, we aimed to determine how different life-history groups and performance indicators (e.g., biomass and richness) of subordinate species respond to shrub–herb interactions during dune stabilization. The shrub Artemisia ordosica had positive effects on understorey species in this dune system. The ability of the shrub to promote the growth of understorey species increased with dune stabilization, but decreased from small to large shrubs. This effect was due to an increase in the relative abundance and biomass of perennials and their higher sensitivity to the positive effects of the shrubs. In contrast, the ability of shrubs to improve the richness of understorey species decreased with dune stabilization, but increased from small to large shrubs. This effect occurred because perennials suffered high strain during recruitment in disturbed open patches of the semi-fixed dunes, particularly below small shrubs. Our results support the theory claiming that communities are sets of hidden interaction groups that have contrasting responses (neutral for annuals, but facilitative for perennials) to dominant neighbors in a single community, depending on their functional strategies. Furthermore, our study highlights the high efficiency of A. ordosica in facilitating ecological restoration of dry and disturbed sandy communities. |
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| Keywords: | Dune stabilization Facilitation Life-history groups Mu Us desert Shrub size |
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