The importance of within-system spatial variation in drivers of marine ecosystem regime shifts
The importance of within-system spatial variation in drivers of marine ecosystem regime shifts
复制标题
系统内空间变化在海洋生态系统格局变化驱动因素中的重要性
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
Georgi M. Daskalov
中科院分区：
文献类型：
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作者：
Jonathan A. D. Fisher;M. Casini;K. Frank;Christian Möllmann;W. C. Leggett;Georgi M. Daskalov
对被开发海洋生态系统的动态进行比较分析后，就观察到的状态变化的主要原因提出了不同的假设，而许多生态系统显然没有经历状态变化。这些不同的反应可以部分解释为几十年来的认识，即系统内的空间异质性在关键的气候和人为驱动因素可能是重要的，因为最近的理论研究得出结论，空间异质性的环境特征可能会减少政权转移的趋势。在这里，我们综合了最近的，经验性的系统内的时空分析，一些温带和亚北极大型海洋生态系统中，政权的转变（并没有）发生。波罗的海、黑海、本古拉海流、北海、巴伦支海和东斯科舍大陆架的例子表明，在评价和预测制度变化的背景下，考虑关键生物和非生物影响以及物种移动的空间变异性的重要性在很大程度上被忽视。我们强调的重要性，了解尺度依赖的空间动态的气候影响和关键的捕食者-猎物的相互作用，以解开动态的政权转变，和效用的空间缩小拟议的机制（如在北海和巴伦支海）作为一种手段，评估最初来自系统比较的假设。
Comparative analyses of the dynamics of exploited marine ecosystems have led to differing hypotheses regarding the primary causes of observed regime shifts, while many ecosystems have apparently not undergone regime shifts. These varied responses may be partly explained by the decade-old recognition that within-system spatial heterogeneity in key climate and anthropogenic drivers may be important, as recent theoretical examinations have concluded that spatial heterogeneity in environmental characteristics may diminish the tendency for regime shifts. Here, we synthesize recent, empirical within-system spatio-temporal analyses of some temperate and subarctic large marine ecosystems in which regime shifts have (and have not) occurred. Examples from the Baltic Sea, Black Sea, Bengula Current, North Sea, Barents Sea and Eastern Scotian Shelf reveal the largely neglected importance of considering spatial variability in key biotic and abiotic influences and species movements in the context of evaluating and predicting regime shifts. We highlight both the importance of understanding the scale-dependent spatial dynamics of climate influences and key predator–prey interactions to unravel the dynamics of regime shifts, and the utility of spatial downscaling of proposed mechanisms (as evident in the North Sea and Barents Sea) as a means of evaluating hypotheses originally derived from among-system comparisons.
影响因子：
11.6
作者：
Moellmann, Christian;Diekmann, Rabea;Axe, Philip
通讯作者：
Axe, Philip