Negative growth responses to temperature of sympatric species converge under warming conditions on the southeastern Tibetan Plateau
- 86 Downloads
Warming-induced drought stress leads to convergent and negative growth responses to temperature between sympatric tree species, implying an increasing interspecific competition for soil moisture.
In mixed forests, sympatric tree species avoid competition by partitioning their niches according to available environment resources. We raise the hypothesis that climate warming leads to a convergence in growth responses to climate, thus increasing the competition among sympatric species in drought-prone forests. In this study, we selected a mixed forest located at ca. 3600 m a.s.l in the Baima Snow Mountains, an inner dry valley of the southeastern Tibetan Plateau. We measured width of the tree rings produced during 1910–2016 in 60 trees belonging to three sympatric species: Abies georgei, Picea likiangensis, and Betula delavayi. We analyzed the changes in radial growth and their responses to climate. We detected shifts in the responses to climate after the 1990s. The radial growth of all species was positively correlated with precipitation from 1964 to 1990, but negatively correlated with March–June temperature from 1991 to 2016. Compared to the period 1964–1990, convergent and negative growth responses to warmer temperatures in the period 1991–2016 probably reflect less available soil moisture for growing in this mixed forest. We conclude that climate warming will affect the niches of sympatric species in mixed forests subjected to seasonal drought, thus increasing competition and altering structure and composition of the stands in dry regions.
KeywordsTree rings Mixed forests Growth convergence Climate warming Inner dry valley Tibetan Plateau
This work was supported by the National Natural Science Foundation of China (41661144040), the Strategic Priority Research Program of Chinese Academy of Sciences (XDA20050101), and Youth Innovation Promotion Association of Chinese Academy of Sciences.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
- Cook ER (1985) A time-series analysis approach to tree ring standardization. Ph.D. Thesis, University of Arizona, TucsonGoogle Scholar
- Cook ER, Kairiukstis LA (2013) Methods of dendrochronology: applications in the environmental sciences. Springer Science & Business Media, BerlinGoogle Scholar
- Development Core Team R (2018) R: a language and environment for statistical computing. R Foundation for Statistical Computing, ViennaGoogle Scholar
- Holmes RL (1983) Computer-assisted quality control in tree-ring dating and measurement. Tree-ring Bull 43:69–75Google Scholar
- Liu B, Liang E, Liu K, Camarero JJ (2018a) Species- and elevation-dependent growth responses to climate warming of mountain forests in the Qinling Mountains. Central China. Forests 9:248Google Scholar
- Pretzsch H, del Río M, Ammer C, Avdagic A, Barbeito I, Bielak K, Brazaitis G, Coll L, Dirnberger G, Drössler L, Fabrika M, Forrester DI, Godvod K, Heym M, Hurt V, Kurylyak V, Löf M, Lombardi F, Matović B, Mohren F, Motta R, den OJ, Pach M, Ponette Q, Schütze G, Schweig J, Skrzyszewski J, Sramek V, Sterba H, Stojanović D, Svoboda M, Vanhellemont M, Verheyen K, Wellhausen K, Zlatanov T, Bravo OA (2015) Growth and yield of mixed versus pure stands of Scots pine (Pinus sylvestris L.) and European beech (Fagus sylvatica L.) analysed along a productivity gradient through Europe. Eur J Forest Res 134:927–947CrossRefGoogle Scholar
- Rossi S, Anfodillo T, Cufar K, Cuny HE, Deslauriers A, Fonti P, Frank D, Gricar J, Gruber A, Huang J, Jyske T, Kašpar J, King G, Krause C, Liang E, Mäkinen H, Morin H, Nöjd P, Oberhuber W, Prislan P, Rathgeber CBK, Saracino A, Swidrak I, Treml V (2016) Pattern of xylem phenology in conifers of cold ecosystems at the Northern Hemisphere. Glob Chang Biol 22:3804–3813PubMedCrossRefPubMedCentralGoogle Scholar
- Shestakova TA, Gutiérrez E, Kirdyanov AV, Camarero JJ, Génova M, Knorre AA, Linares JC, de Dios VR, Sánchez-Salguero R, Voltas J (2016) Forests synchronize their growth in contrasting Eurasian regions in response to climate warming. Proc Natl Acad Sci USA 113:662–667PubMedCrossRefPubMedCentralGoogle Scholar
- Svobodová K, Langbehn T, Björklund J, Rydval M, Trotsiuk V, Morrissey RC, Čada V, Janda P, Begovič K, Ágh-Lábusová J, Schurman JS, Nováková M, Kozák D, Kameniar O, Synek M, Mikoláš M, Svoboda M (2019) Increased sensitivity to drought across successional stages in natural Norway spruce (Picea abies (L.) Karst.) forests of the Calimani Mountains. Romania. Trees 33:1345–1359CrossRefGoogle Scholar
- Williams AP, Allen CD, Macalady AK, Griffin D, Woodhouse CA, Meko DM, Swetnam TW, Rauscher SA, Seager R, Grissino-Mayer HD, Dean JS, Cook ER, Gangodagamage C, Cai M, McDowell NG (2013) Temperature as a potent driver of regional forest drought stress and tree mortality. Nat Clim Chang 3:292CrossRefGoogle Scholar