Inter-annual and decadal changes in teleconnections drive continental-scale synchronization of tree reproduction

被引：64

作者：

Ascoli, Davide ^{[1
]}

Vacchiano, Giorgio ^{[2
,9
]}

Turco, Marco ^{[3
]}

Conedera, Marco ^{[4
]}

Drobyshev, Igor ^{[5
,6
]}

Maringer, Janet ^{[4
,7
]}

Motta, Renzo ^{[2
]}

Hacket-Pain, Andrew ^{[8
]}

机构：

[1] Univ Naples Federico II, Dept Agr, Via Univ 100, I-80055 Portici, Italy

[2] Univ Turin, DISAFA, Largo Braccini 2, I-10095 Grugliasco, TO, Italy

[3] Univ Barcelona, Dept Appl Phys, Av Diagonal 647, E-08028 Barcelona, Spain

[4] Swiss Fed Inst Forest Snow & Landscape Res WSL, A Ramel 18, CH-6953 Cadenazzo, Switzerland

[5] Swedish Univ Agr Sci, Southern Swedish Forest Res Ctr, POB 49, S-23053 Alnarp, Sweden

[6] Univ Quebec Abitibi Temiscamingue, Inst Rech Forets, 445 Blvd Univ, Rouyn Noranda, PQ J9X 5E4, Canada

[7] Univ Stuttgart, Inst Landscape Planning & Ecol, Keplerstr 11, D-70174 Stuttgart, Germany

[8] Univ Liverpool, Sch Environm Sci, Dept Geog & Planning, Liverpool L69 7ZT, Merseyside, England

[9] European Commiss, Ispra, Bioecon D1, Joint Res Ctr, I-21027 Varese, Italy

来源：

NATURE COMMUNICATIONS | 2017年 / 8卷

关键词：

NORTH-ATLANTIC OSCILLATION; ENVIRONMENTAL PREDICTION HYPOTHESIS; EUROPEAN BEECH FORESTS; OLD-GROWTH FOREST; FAGUS-SILVATICA; MAST; CLIMATE; FIRE; VARIABILITY; DYNAMICS;

D O I：

10.1038/s41467-017-02348-9

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Climate teleconnections drive highly variable and synchronous seed production (masting) over large scales. Disentangling the effect of high-frequency (inter-annual variation) from low-frequency (decadal trends) components of climate oscillations will improve our understanding of masting as an ecosystem process. Using century-long observations on masting (the MASTREE database) and data on the Northern Atlantic Oscillation (NAO), we show that in the last 60 years both high-frequency summer and spring NAO, and low-frequency winter NAO components are highly correlated to continent-wide masting in European beech and Norway spruce. Relationships are weaker (non-stationary) in the early twentieth century. This finding improves our understanding on how climate variation affects large-scale synchronization of tree masting. Moreover, it supports the connection between proximate and ultimate causes of masting: indeed, large-scale features of atmospheric circulation coherently drive cues and resources for masting, as well as its evolutionary drivers, such as pollination efficiency, abundance of seed dispersers, and natural disturbance regimes.

引用

页数：9

共 71 条

[1] Parameterisation and validation of a resource budget model for masting using spatiotemporal flowering data of individual trees [J].