Ecological thresholds and patterns of millennial-scale climate variability: The response of vegetation in Greece during the last glacial period
Ecological thresholds and patterns of millennial-scale climate variability: The response of vegetation in Greece during the last glacial period
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DOI：
10.1130/g20118.1
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发表时间：
2004-02
期刊：
影响因子：
5.8
通讯作者：
P. Tzedakis;M. Frogley;I. Lawson;R. C. Preece;I. Cacho;L. D. Abreu
中科院分区：
文献类型：
--
作者：
P. Tzedakis;M. Frogley;I. Lawson;R. C. Preece;I. Cacho;L. D. Abreu
最后一次冰期千年尺度气候变率的区域表达，特别参考了希腊的植被响应。对来自不同生物气候地区的三个花粉记录的检查表明，北大西洋和西地中海所认识到的寒冷事件强度的差异仅在具有一系列有利栖息地的地区用树木种群变化来表达。相比之下，来自种群接近其容忍阈值的地点的记录似乎无法解决气候振荡幅度的差异。在试图建立千年变率的空间格局时，了解当地因子在调节气候变化的生物响应中的重要性是至关重要的。
The regional expression of millennial-scale climate variability during the last glacial is examined with particular reference to the vegetation response in Greece. Inspection of three pollen records from contrasting bioclimatic areas suggests that differences in the magnitude of cold events as recognized in the North Atlantic and western Mediterranean are expressed in terms of tree population changes only in areas with a range of favorable habitats. By contrast, records from sites where populations approach their tolerance threshold do not appear to resolve differences in the amplitude of the climate oscillations. Understanding the importance of local factors in modulating the biological response to climate change is critical when attempting to establish the spatial pattern of millennial variability.