Latitudinal variation of arrival and breeding phenology of the pied flycatcher Ficedula hypoleuca using large-scale citizen science data.

Many species have advanced the timing of annual reproductive cycles in response to climatic warming, sometimes leading to asynchrony between trophic levels, with negative population consequences. Long-distance migratory birds, reliant on short seasonal food pulses for breeding, are considered particularly susceptible to such disjunction because late arrival may preclude optimal timing of egg-laying. It is unknown whether the relative timing of arrival and egg-laying is sufficiently plastic, in time and space, to enable an adaptive response when arrival times change relative to local food resources. We used citizen science data, describing pied flycatcher Ficedula hypoleuca arrival and egg-laying dates, to explore temporal (2013-2016) and spatial (across Great Britain) variation in the phenology of arrival, laying and their difference. To assess the long-term trend in arrival and laying at a single location, we used data from a long-term field study. The arrival-laying interval was consi...

许多物种已响应气候变暖而提前了年度繁殖周期的启动时间，这有时会引发营养级间的物候不同步，并对种群产生负面影响。依赖季节性集中出现的短期食物资源开展繁殖的长距离迁徙鸟类，被认为尤其易受此类物候脱节的影响，因为抵达繁殖地过晚可能无法实现最佳产卵时机。目前尚不清楚，当抵达时间相对于本地食物资源发生变化时，抵达与产卵的相对时间在时间与空间维度上是否具备足够的可塑性，以支持适应性响应。我们采用了描述斑鹟（Ficedula hypoleuca）抵达日期与产卵日期的公民科学数据，以探究其抵达、产卵的物候特征及其时间间隔在时间维度（2013-2016年）与空间维度（覆盖全英国范围内）上的变异。为评估单一研究地点的抵达与产卵物候长期趋势，我们使用了长期野外研究的相关数据。抵达-产卵间隔为……