Počet záznamů: 1  

Tree-ring evidence for the historical absence of cyclic larch budmoth outbreaks in the Tatra Mountains

  1. 1.
    0473339 - ÚVGZ 2017 RIV DE eng J - Článek v odborném periodiku
    Konter, O. - Esper, J. - Liebhold, A. - Kyncl, T. - Schneider, L. - Duethorn, E. - Büntgen, Ulf
    Tree-ring evidence for the historical absence of cyclic larch budmoth outbreaks in the Tatra Mountains.
    Trees: structure and function. Roč. 29, č. 3 (2015), s. 809-814. ISSN 0931-1890. E-ISSN 1432-2285
    Grant CEP: GA MŠMT(CZ) EE2.3.20.0248
    Institucionální podpora: RVO:67179843
    Klíčová slova: bud-moth cycle * zeiraphera-diniana * population fluctuations * insect outbreaks * time-series * host races * climate * reconstructions * alps * Dendroecology * Forest entomology * Host abundance * Paleoclimatology * Population ecology * Trophic interaction
    Kód oboru RIV: EH - Ekologie - společenstva
    Impakt faktor: 1.706, rok: 2015

    Key message The absence of larch budmoth outbreaks and subsequent consequences on tree rings together with a distinct climate-growth relationship enhance the dendroclimatic potential of larch ring width data from the Tatra Mountains. Regular population oscillations are generally considered to arise from trophic interactions, though it is unclear how such cycles are affected by biotic and abiotic factors. Cyclic outbreaks of the larch budmoth (LBM; Zeiraphera diniana), perhaps the most prominent example of periodic insect population dynamics, leave distinct "fingerprints' in the annual rings of host trees, and have been reconstructed over 1,200 years in the European Alps. Although LBM individuals are known to exist in other regions, it is unclear whether recurrent mass outbreaks historically occurred elsewhere. Here, we present new larch (Larix decidua) host and pine (Pinus cembra) non-host chronologies from the Slovakian Tatra that comprise 323 ring width samples dating back to 1612 AD. May-June and May-July temperatures control larch and pine growth (r(1951-2011) = 0.63 and 0.57; p < 0.001), respectively. LBM outbreak-induced defoliation patterns and subsequent ring width reductions were absent over the past three centuries, during which larch (host) and pine (non-host) growth was significantly synchronized (r(1725-2012) = 0.48; p < 0.001). Spatially limited host forests of overall low stand densities along the northwestern Carpathian arc together with a relatively warm climate envelope are most likely responsible for the absence of cyclic LBM outbreaks. Tree-ring chronologies from these ecotones, free of pulsed disruptions, therefore, represent unique paleoclimatic archives ideal for reconstructing interannual to multi-centennial variations in Eastern European summer temperature.
    Trvalý link: http://hdl.handle.net/11104/0270482

     
     
Počet záznamů: 1  

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