Climate change-related regime shifts have altered spatial synchrony of plankton dynamics in the North Sea
Climate change-related regime shifts have altered spatial synchrony of plankton dynamics in the North Sea
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DOI：
10.1111/gcb.13229
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发表时间：
2016-06-01
影响因子：
11.6
通讯作者：
Reuman, Daniel C.
中科院分区：
文献类型：
--
作者：
Defriez, Emma J.;Sheppard, Lawrence W.;Reuman, Daniel C.
在1980年代，北海浮游生物群落经历了一个有据可查的生态系统制度的转变，包括空间变化（向北物种的范围转移）和时间变化（增加在温暖的水物种的总丰度）。这种制度转变被归因于气候变化。浮游生物在气候和更高营养水平的生物之间提供了联系，它们可以在大的空间和时间尺度上觅食。因此，不仅要了解气候变化是否影响浮游生物动态的纯粹空间或时间方面，而且还要了解它是否影响集合种群同步等时空方面。如果浮游生物的同步性被改变，高营养级的摄食模式可能会被修改。研究同步性变化的第二个动机是，尽管同步性在生态学中普遍存在且具有重大意义，但很少有生物体研究过这种变化的可能性。这项研究使用相关系数和频谱分析来研究1959-1980年和1989-2010年之间的同步性是否发生了变化。23浮游生物类群，海表温度（SST），风速进行了检查。结果表明，SST和浮游生物的同步性被改变。变化是特殊的，并不能用丰度的变化来解释。Helgolandicus和Para-pseudocalanus物种的同步性的变化似乎是由SST同步性的变化驱动的。这项研究是为数不多的记录同步变化和气候变化对同步影响的研究之一。我们讨论了为什么气候变化对同步的影响可能比以前认识到的更普遍和更重要。
During the 1980s, the North Sea plankton community underwent a well-documented ecosystem regime shift, including both spatial changes (northward species range shifts) and temporal changes (increases in the total abundances of warmer water species). This regime shift has been attributed to climate change. Plankton provide a link between climate and higher trophic-level organisms, which can forage on large spatial and temporal scales. It is therefore important to understand not only whether climate change affects purely spatial or temporal aspects of plankton dynamics, but also whether it affects spatiotemporal aspects such as metapopulation synchrony. If plankton synchrony is altered, higher trophic-level feeding patterns may be modified. A second motivation for investigating changes in synchrony is that the possibility of such alterations has been examined for few organisms, in spite of the fact that synchrony is ubiquitous and of major importance in ecology. This study uses correlation coefficients and spectral analysis to investigate whether synchrony changed between the periods 1959-1980 and 1989-2010. Twenty-three plankton taxa, sea surface temperature (SST), and wind speed were examined. Results revealed that synchrony in SST and plankton was altered. Changes were idiosyncratic, and were not explained by changes in abundance. Changes in the synchrony of Calanus helgolandicus and Para-pseudocalanus spp appeared to be driven by changes in SST synchrony. This study is one of few to document alterations of synchrony and climate-change impacts on synchrony. We discuss why climate-change impacts on synchrony may well be more common and consequential than previously recognized.