Population synchronies within and between ocean basins: Apparent teleconnections and implications as to physical-biological linkage mechanisms
Population synchronies within and between ocean basins: Apparent teleconnections and implications as to physical-biological linkage mechanisms
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DOI：
10.1016/j.jmarsys.2008.11.029
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发表时间：
2010-02-10
影响因子：
2.8
通讯作者：
Bakun, Andrew
中科院分区：
文献类型：
--
作者：
Alheit, Juergen;Bakun, Andrew
在相隔数千公里的大型海洋生态系统中，主要鱼类种群似乎经常在十年尺度上同步波动，这表明区域和全球气候变异对生态系统进程和种群动态有很强的强迫作用。通过大气传播的气候信号似乎起到同步作用，导致遥远的海洋生态系统和种群之间的遥相关模式。本审查是一种尝试（一）总结这些明显的海洋盆地内和之间的遥相关模式，在一个比较框架内使用特别有启发性的例子和（二）解开气候信号和鱼类种群之间的物理-生物联系机制。黑潮和洪堡海流生态系统之间的物理和生物过程的同步性特别引人注目。1971年秘鲁涛动的崩溃和日本涛动的迅速减少似乎与南方涛动指数（SOI）和太平洋年代际涛动（PDO）等气候指数没有直接联系。PDO所指出的北太平洋70年代中期的“气候体制转变”并没有反映在两个生态系统中的鳕鱼和沙丁鱼等主要组成部分的动态中，而亚洲冬季风指数（MOI）和北极涛动（AO）似乎与这些事件相关，至少在西北太平洋是这样。我们推测，黑潮和洪堡系统之间的同步过程是由北太平洋和南太平洋海盆尺度的海气耦合环流的变化所带来的。欧洲水生系统的例子描述了物理-生物同步，NAO似乎是同步剂。当NAO指数在20世纪80年代后期从负向正相变化时，在波罗的海中部、北海、地中海西北部以及北欧和中欧湖泊观察到水温的一致增加，这与所有这些生态系统的制度转变有关，涉及所有营养水平。最后，太平洋和大西洋盆地之间的物理-生物同步。得出的结论是，多区域、多物种的比较方法，其中可用的时间序列可以被视为一套共同的基本问题的不同实现，可能是取得真实的进展的唯一途径。(C)2009爱思唯尔有限公司版权所有。
Major fish populations in large marine ecosystems separated by thousands of kilometres often seem to fluctuate in decadal-scale synchrony indicating strong forcing of ecosystem processes and population dynamics by regional and global climatic variability. The climate signals propagating through the atmosphere appear to act as synchronizing agents leading to teleconnection patterns between distant marine ecosystems and populations. This review is an attempt (i) to summarize these apparent within and between ocean basin teleconnection patterns in a comparative framework using particularly suggestive examples and (ii) to unravel physical-biological linkage mechanisms between a climate signal and fish populations. Synchronies in the timing of physical and biological processes between the Kuroshio and the Humboldt Current ecosystems are particularly striking. The collapse of the Peruvian anchovy in 1971 and the rapid decrease of the Japanese anchovy seem not to be directly associated with climate indices such as the Southern Oscillation Index (SOI) and the Pacific Decadal Oscillation (PDO). The "climate regime shift" in the mid-1970s in the North Pacific indicated by the PDO is not reflected in the dynamics of anchovies and sardines and other main components in both ecosystems, whereas the Asian Winter Monsoon Index (MOI) and the Arctic Oscillation (AO) seem to correlate with these events, at least in the Northwest Pacific. We speculate that the synchrony between processes in the Kuroshio and Humboldt systems is brought about by changes in the basin-scale coupled ocean-atmosphere circulation in North and South Pacific basins. The example of European aquatic systems describes physical-biological synchronies for which the NAO appears to be the synchronizing agent. When the NAO index changed in the late 1980s from a negative to a positive phase, a coherent increase in water temperature was observed in the Central Baltic, the North Sea, the NW Mediterranean and north and central European lakes which was associated with regime shifts in all these ecosystems and which involved all trophic levels. Finally, apparent physical-biological synchronies between the Pacific and Atlantic basins are presented. It is concluded that the multi-regional, multi-species comparative approach, in which the available time series can be considered as different realizations of a common set of basic issues, may be the only way to make real progress. (C) 2009 Elsevier B.V. All rights reserved.