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Changes in large-scale climate alter spatial synchrony of aphid pests [Nature climate change]

Subject terms : phenology, population dynamics

par Frédéric Magné - publié le

Spatial synchrony, the tendency of distant populations to fluctuate similarly, is a major concern in ecology1, 2, 3, 4, 5, 6, 7, 8. Except in special circumstances3, 9, researchers historically had difficulty identifying drivers of synchrony in field systems5, 6, 10. Perhaps for this reason, the possibility9, 11, 12 that changes in large-scale climatic drivers may modify synchrony, thereby impacting ecosystems and human concerns, has been little examined. Here, we use wavelets to determine environmental drivers of phenological synchrony across Britain for 20 aphid species, most major crop pests. Consistently across species, changes in drivers produced large changes in aphid synchrony.(...)

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