TY  - JOUR
AU  - Shestakova, Tatiana A.
AU  - Voltas, Jordi
AU  - Saurer, Matthias
AU  - Berninger, Frank
AU  - Esper, Jan
AU  - Andreu-Hayles, Laia
AU  - Daux, Valérie
AU  - Helle, Gerhard
AU  - Leuenberger, Markus
AU  - Loader, Neil J.
AU  - Masson-Delmotte, Valérie
AU  - Saracino, Antonio
AU  - Waterhouse, John S.
AU  - Schleser, Gerhard, Hans
AU  - Bednarz, Zdzisław
AU  - Boettger, Tatjana
AU  - Dorado-Liñán, Isabel
AU  - Filot, Marc
AU  - Frank, David
AU  - Grabner, Michael
AU  - Haupt, Marika
AU  - Hilasvuori, Emmi
AU  - Jungner, Högne
AU  - Kalela-Brundin, Maarit
AU  - Krąpiec, Marek
AU  - Marah, Hamid
AU  - Pawełczyk, Sławomira
AU  - Pazdur, Anna
AU  - Pierre, Monique
AU  - Planells, Octavi
AU  - Pukienė, Rūtilė
AU  - Reynolds-Henne, Christina E.
AU  - Rinne-Garmston , Katja T.
AU  - Rita, Angelo
AU  - Sonninen, Eloni
AU  - Stiévenard, Michel
AU  - Switsur, Vincent R.
AU  - Szychowska-Kra̧piec, Elżbieta
AU  - Szymaszek, Malgorzata
AU  - Todaro, Luigi
AU  - Treydte, Kerstin
AU  - Vitas, Adomas
AU  - Weigl, Martin
AU  - Wimmer, Rupert
AU  - Gutiérrez, Emilia
TI  - Spatio‐temporal patterns of tree growth as related to carbon isotope fractionation in European forests under changing climate
JO  - Global ecology and biogeography
VL  - 28
IS  - 9
SN  - 1466-8238
CY  - Oxford [u.a.]
PB  - Wiley-Blackwell
M1  - FZJ-2019-03510
SP  - 1295-1309
PY  - 2019
AB  - AimThe aim was to decipher Europe‐wide spatio‐temporal patterns of forest growth dynamics and their associations with carbon isotope fractionation processes inferred from tree rings as modulated by climate warming.LocationEurope and North Africa (30‒70° N, 10° W‒35° E).Time period1901‒2003.Major taxa studiedTemperate and Euro‐Siberian trees.MethodsWe characterize changes in the relationship between tree growth and carbon isotope fractionation over the 20th century using a European network consisting of 20 site chronologies. Using indexed tree‐ring widths (TRWi), we assess shifts in the temporal coherence of radial growth across sites (synchrony) for five forest ecosystems (Atlantic, boreal, cold continental, Mediterranean and temperate). We also examine whether TRWi shows variable coupling with leaf‐level gas exchange, inferred from indexed carbon isotope discrimination of tree‐ring cellulose (Δ13Ci).ResultsWe find spatial autocorrelation for TRWi and Δ13Ci extending over a maximum of 1,000 km among forest stands. However, growth synchrony is not uniform across Europe, but increases along a latitudinal gradient concurrent with decreasing temperature and evapotranspiration. Latitudinal relationships between TRWi and Δ13Ci (changing from negative to positive southwards) point to drought impairing carbon uptake via stomatal regulation for water saving occurring at forests below 60° N in continental Europe. An increase in forest growth synchrony over the 20th century together with increasingly positive relationships between TRWi and Δ13Ci indicate intensifying impacts of drought on tree performance. These effects are noticeable in drought‐prone biomes (Mediterranean, temperate and cold continental).Main conclusionsAt the turn of this century, convergence in growth synchrony across European forest ecosystems is coupled with coordinated warming‐induced effects of drought on leaf physiology and tree growth spreading northwards. Such a tendency towards exacerbated moisture‐sensitive growth and physiology could override positive effects of enhanced leaf intercellular CO2 concentrations, possibly resulting in Europe‐wide declines of forest carbon gain in the coming decades.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000480584900008
DO  - DOI:10.1111/geb.12933
UR  - https://juser.fz-juelich.de/record/863446
ER  -