Long-term vegetation dynamic in the Northwestern Caucasus: which communities are more affected by upward shifts of plant species?
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We studied long-term (25–31 years) dynamics of alpine communities at the Teberda Reserve, NW Caucasus, Russia, to test the following hypotheses: (1) lower altitude species increase and high altitude species decrease their abundance as a consequence of climate warming; (2) such changes in abundance are more significant in communities with short growth season (due to persistent snow cover) compared to exposed communities; (3) species with similar changes in abundance have similar functional traits. Four alpine communities with different positions in relief were considered in order of winter snow cover: alpine lichen heaths (ALH), Festuca varia grasslands (FVG), Geranium-Hedysarum meadows (GHM), and snowbed communities (SBC).
The altitudinal distribution of species significantly predicted the direction and degree of changes in species abundance in GHM (p < 0.001), SBC (p < 0.02) and FVG (p < 0.05) with high altitude species decreasing and low altitude species increasing their abundance. Mean altitudes of significantly decreasing species exceeded that of increasing species by ca. 100–130 m in FVG, GHM and SBC. There were no species traits or trait combinations that consistently predicted their changing abundance in ALH, FVG and SBC. In GHM increasing species tended to have leaves with higher SLA (i.e. softer leaves) and lower root nitrogen content. The observed dynamic processes may be caused partly by recent climate warming, although slow recovery from historic grazing pressure may also play a role. Regardless of the causes driving the plant species’ upward shift, communities experiencing high snow accumulation (SBC, GHM) seem to be more vulnerable to changes in structure and composition.
KeywordsClimate change Alpine community Altitude Functional traits
This work is supported by RFBF № 11-04-01215 to VGO and NWO grant 047.018.003 to JHCC. We are grateful to all the members of the Teberda expedition for their help in fieldwork over all the time of observations in various years and two anonymous reviewers for valuable comments.
- Cherednichenko OV (2001) Natural interannual dynamics of Geranium-Hedysarum meadows, northwest Caucasus. Zapovednoe Delo 9:53–70Google Scholar
- Cornelissen JHC, Lavorel S, Garnier E, Díaz S, Buchmann N, Gurvich DE, Reich PB, ter Steege H, Morgan HD, van der Heijden MGA, Pausas JG, Poorter H (2003) A handbook of protocols for standardised and easy measurement of plant functional traits worldwide. Australian J Bot 51:335–380CrossRefGoogle Scholar
- Elmendorf SC, Henry GHR, Hollister RD, Björk RG, Boulanger-Lapointe N, Cooper EJ, Cornelissen JHC, Day TA, Dorrepaal E, Elumeeva TG, Gill M, Gould WA, Harte J, Hik DS, Hofgaard A, Johnson DR, Johnstone JF, Jónsdóttir IS, Jorgenson JC, Klanderud K, Klein JA, Koh S, Kudo G, Lara M, Lévesque E, Magnússon B, May J, Mercado-Díaz JA, Michelsen A, Molau U, Myers-Smith IH, Oberbauer SF, Onipchenko VG, Rixen C, Schmidt NM, Shaver GR, Spasojevic MJ, Þórhallsdóttir ÞE, Tolvanen A, Troxler T, Tweedie CE, Villareal S, Wahren CH, Walker X, Webber PJ, Welker JM, Wipf S (2012) Plot-scale evidence of tundra vegetation change and links to recent summer warming. Nature Clim Change 2:453–457CrossRefGoogle Scholar
- Elumeeva TG, Onipchenko VG (2006) Natural dynamics of the Festuca varia grassland in the Teberda reserve. Bull Moscow Soc Nat 111(2):62–71Google Scholar
- Fomin SV, Onipchenko VG, Gerasimova MA (2004) Burrowing and trophic activity of small mammals. In: Onipchenko VG (ed) Alpine ecosystems in the Northwest Caucasus. Kluwer, Dordrecht, pp 312–322Google Scholar
- Gottfried M, Pauli H, Futschik A, Akhalkatsi M, Barančok P, Alonso JLB, Coldea G, Dick J, Erschbamer B, Fernández Calzado MR, Kazakis G, Krajči J, Larsson P, Mallaun M, Michelsen O, Moiseev D, Moiseev P, Molau U, Merzouki A, Nagy L, Nakhutsrishvili G, Pedersen B, Pelino G, Puscas M, Rossi G, Stanisci A, Theurillat JP, Tomaselli M, Villar L, Vittoz P, Vogiatzakis I, Grabherr G (2012) Continent-wide response of mountain vegetation to climate change. Nature Clim Change 2:111–115CrossRefGoogle Scholar
- Onipchenko VG, Zernov AS, Vorob’eva FM (2011) Vascular plants of Teberda Reserve (annotated list of species). Flora and fauna of natural reserves, 2nd edn. 99A, MAKS Press, MoscowGoogle Scholar
- Pauli H, Gottfried M, Dullinger S, Abdaladze O, Akhalkatsi M, Alonso JLB, Coldea G, Dick J, Erschbamer B, Fernández Calzado R, Ghosn D, Holten JI, Kanka R, Kazakis G, Kollár J, Larsson P, Moiseev P, Moiseev D, Molau U, Molero Mesa J, Nagy L, Pelino G, Puşcaş M, Rossi G, Stanisci A, Syverhuset AO, Theurillat J-P, Tomaselli M, Unterluggauer P, Villar L, Vittoz P, Grabherr G (2012) Recent plant diversity changes on Europe’s mountain summits. Science 336:353–355PubMedCrossRefGoogle Scholar
- Salpagarova FS, Onipchenko VG, Agafonov VA, Adzhiev RK (2012) Specific root length of alpine plants in the northwest Caucasus. Russia. Bull Moscow Soc Nat 117(4):69–76Google Scholar
- Salpagarova FS, van Logtestijn RSP, Onipchenko VG, Akhmetzhanova AA, Agafonov VA (2013) Fine root nitrogen contents and morphological adaptations of alpine plants. Zhurnal obshchei biol 74(3):190-200Google Scholar
- Shidakov II, Onipchenko VG (2007) Comparative analysis of alpine plant leaf traits in the Teberda reserve. Bull Moscow Soc Nat 112(4):42–50Google Scholar
- Soudzilovskaia NA, Elumeeva TG, Onipchenko VG, Shidakov II, Salpagarova FS, Khubiev AB, Tekeev DK, Cornelissen JHC (2013) Functional traits predict relationship between plant abundance dynamic and long-term climate warming. Proc Natl Acad Sci (in press)Google Scholar
- R Development Core Team (2011) R: a language and environment for statistical computing. R Foundation for statistical computing, Vienna, Austria ISBN 3-900051-07-0, URL http://www.R-project.org/
- Wookey PA, Aerts R, Bardgett R, Baptist F, Bråthen KA, Cornelissen JHC, Gough L, Hartley IP, Hopkins DW, Lavorel S, Shaver GR (2009) Ecosystem feedbacks and cascade processes: understanding their role in the responses of Arctic and alpine ecosystems to environmental change. Glob Change Biol 15:1153–1172CrossRefGoogle Scholar
- Zibrov IA, Gerasimova MA (2007) Dynamics of small mammals in alpine communities of the Teberda Reserve. Trans Teberda Reserve 27:150–160Google Scholar