| timing of population peaks of norway lemming in relation to atmospheric pressure: a hypothesis to explain the spatial synchrony. | herbivore cycles are often synchronized over larger areas than what could be explained by dispersal. in norway, the 3-4 year lemming cycle usually show no more than a one-year time lag between different regions, despite distances of up to 1000 km. if important food plants are forced to reallocate defensive proteins in years with high seed production, spatially synchronized herbivore outbreaks may be due to climate-synchronized peaks in flowering. because lemming peaks are expected to occur one y ... | 2016 | 27249449 |