SPATIAL SYNCHRONY IN THE DYNAMICS OF MOTH AND APHID POPULATIONS
SPATIAL SYNCHRONY IN THE DYNAMICS OF MOTH AND APHID POPULATIONS
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DOI：
10.2307/5386
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发表时间：
1993-01-01
影响因子：
4.8
通讯作者：
WOIWOD, IP
中科院分区：
文献类型：
--
作者：
HANSKI, I;WOIWOD, IP
1.我们报告的模式种内空间同步性（互相关滞后零）在英国的飞蛾和蚜虫的动态采样在57和21个地点在整个英国。蚜虫的空间同步性显著高于蛾类。在这两个类群，空间同步性下降，增加同种种群之间的距离，但同步性保持积极的所有距离800公里。空间方差-平均值回归斜率较大（>2）的物种具有空间异步动态，与理论模型预测的一致.在蝗虫和蚜虫中，空间同步性程度与当地种群的时间变异性水平之间存在显著的正相关，而尺蠖蛾中没有.我们讨论了两个主要的假设空间同步性，迁移和区域随机性（空间相关的天气条件）的原因。我们的结论是，我们的研究结果在蛾和蚜虫的大规模空间同步性更好地解释了区域随机性比迁移。
1. We report patterns of intraspecific spatial synchrony (cross-correlation with lag zero) in the dynamics of British moths and aphids sampled at 57 and 21 localities throughout the UK.2. Spatial synchrony was substantially higher in aphids than in moths. In both taxa, spatial synchrony declined with increasing distance between conspecific populations, but synchrony remained positive at all distances up to 800 km.3. Species with large slopes (>2) of the spatial variance-mean regression had spatially asynchronous dynamics, as predicted by a theoretical model.4. In noctuid moths and in aphids, but not in geometrid moths, there was a significant positive correlation between the degree of spatial synchrony and the level of temporal variability in local populations.5. We discuss the two main hypotheses about the causes of spatial synchrony, migration and regional stochasticity (spatially correlated weather conditions). We conclude that our results on large-scale spatial synchrony in moths and aphids are better explained by regional stochasticity than by migration.