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  1. Wild apple growth and climate change in southeast Kazakhstan

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    Author(s): Irina P. Panyushkina; Nurjan S. Mukhamadiev; Ann M. Lynch; Nursagim A. Ashikbaev; Alexis H. Arizpe; Christopher D. O'Connor; Danyar Abjanbaev; Gulnaz Z. Mengdbayeva; Abay O. Sagitov
    Date: 2017
    Source: Forests. 8: 406.
    Publication Series: Scientific Journal (JRNL)
    Station: Rocky Mountain Research Station
    DOI: https://doi.org/10.3390/f8110406
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    Description

    Wild populations of Malus sieversii [Ldb.] M. Roem are valued genetic and watershed resources in Inner Eurasia. These populations are located in a region that has experienced rapid and on-going climatic change over the past several decades. We assess relationships between climate variables and wild apple radial growth with dendroclimatological techniques to understand the potential of a changing climate to influence apple radial growth. Ring-width chronologies spanning 48 to 129 years were developed from 12 plots in the Trans-Ili Alatau and Jungar Alatau ranges of Tian Shan Mountains, southeastern Kazakhstan. Cluster analysis of the plot-level chronologies suggests different temporal patterns of growth variability over the last century in the two mountain ranges studied. Changes in the periodicity of annual ring-width variability occurred ca. 1970 at both mountain ranges, with decadal-scale variability supplanted by quasi-biennial variation. Seascorr correlation analysis of primary and secondary weather variables identified negative growth associations with spring precipitation and positive associations with cooler fall-winter temperatures, but the relative importance of these relationships varied spatially and temporally, with a shift in the relative importance of spring precipitation ca. 1970 at Trans-Ili Alatau. Altered apple tree radial growth patterns correspond to altered climatology in the Lake Balkhash Basin driven by unprecedented intensified Arctic Oscillations after the late 1970s.

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    Citation

    Panyushkina, Irina P.; Mukhamadiev, Nurjan S.; Lynch, Ann M.; Ashikbaev, Nursagim A.; Arizpe, Alexis H.; O'Connor, Christopher D.; Abjanbaev, Danyar; Mengdbayeva, Gulnaz Z.; Sagitov, Abay O. 2017. Wild apple growth and climate change in southeast Kazakhstan. Forests. 8: 406.

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    Keywords

    wild fruit wood forest, Malus sieversii, dendrochronology, climate change, Central Asia

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https://www.fs.usda.gov/treesearch/pubs/55933