Inter-annual and decadal changes in teleconnections drive continental-scale synchronization of tree reproduction.
Inter-annual and decadal changes in teleconnections drive continental-scale synchronization of tree reproduction.
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DOI：
10.1038/s41467-017-02348-9
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发表时间：
2017-12-20
影响因子：
16.6
通讯作者：
Hacket-Pain A
中科院分区：
文献类型：
--
作者：
Ascoli D;Vacchiano G;Turco M;Conedera M;Drobyshev I;Maringer J;Motta R;Hacket-Pain A
气候遥相关推动了大规模的高度可变和同步的种子生产（桅杆）。区分气候振荡的高频（年际变化）和低频（十年趋势）成分的影响将提高我们对桅杆作为生态系统过程的理解。利用长达一个世纪的桅杆观测（MASTREE 数据库）和北大西洋涛动 (NAO) 数据，我们表明，在过去 60 年中，高频夏季和春季 NAO 以及低频冬季 NAO 分量与欧洲山毛榉和挪威云杉的整个大陆桅杆高度相关。二十世纪初，关系较弱（不稳定）。这一发现提高了我们对气候变化如何影响大规模树木同步的理解。此外，它支持了肥大的直接原因和最终原因之间的联系：事实上，大气环流的大规模特征连贯地驱动了肥大的线索和资源，以及其进化驱动因素，例如授粉效率、种子传播者的丰富性和自然干扰机制。气候振荡会影响不同时空尺度的天气，这给理解它们如何影响树木繁殖带来了困难。这里阿斯科利等人。显示了几十年来两种欧洲树种的 NAO 低频和高频分量与桅杆之间的关系。
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. Climate oscillations affect weather on different temporal-spatial scales, which poses difficulty in understanding how they influence tree reproduction. Here Ascoli et al. show relationships between low- and high-frequency components of the NAO and masting in two European tree species across multiple decades.
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影响因子：
2.9
作者：
ASHTON, PS;GIVNISH, TJ;APPANAH, S
通讯作者：
APPANAH, S
影响因子：
5.9
作者：
Fernandez-Martinez, Marcos;Vicca, Sara;Penuelas, Josep
通讯作者：
Penuelas, Josep
影响因子：
4.9
作者：
Buermann, Wolfgang;Beaulieu, Claudie;Sarmiento, Jorge L.
通讯作者：
Sarmiento, Jorge L.
影响因子：
4
作者：
Han, Qingmin;Kagawa, Akira;Inagaki, Yoshiyuki
通讯作者：
Inagaki, Yoshiyuki
DOI：
10.1002/joc.1982
发表时间：
2010-07-01
期刊：
INTERNATIONAL JOURNAL OF CLIMATOLOGY
影响因子：
--
作者：
Donat, Markus G.;Leckebusch, Gregor C.;Ulbrich, Uwe
通讯作者：
Ulbrich, Uwe