Araújo Pedro M, da Silva Luís P, Paiva Vitor H, Ramos Jaime A
MARE - Marine and Environmental Sciences Centre, Department of Life Sciences, University of Coimbra, 3000-456 Coimbra, Portugal.
MARE - Marine and Environmental Sciences Centre, Department of Life Sciences, University of Coimbra, 3000-456 Coimbra, Portugal.
Zoology (Jena). 2016 Jun;119(3):232-240. doi: 10.1016/j.zool.2016.01.005. Epub 2016 Feb 1.
The arrival and breeding dates of small migrant birds have advanced throughout Europe. This study evaluates the hypothesis of a faster migration along the migratory route, which should lead to a decrease in stopover duration in staging areas over the last decades. Several climatic predictors were analysed as proxies to understand the stopover ecology of reed warbler Acrocephalus scirpaceus migrating through Central Portugal. The minimum stopover duration of migratory reed warblers decreased significantly over the last decade during both the spring and autumn migrations. Warmer conditions en route should increase food availability, increasing the body condition of departing birds and the quality of departing sites en route to Portugal, such that migrants will reduce the stopover duration at Portuguese reedbeds.
在整个欧洲，小型候鸟的到达和繁殖日期都提前了。本研究评估了候鸟在迁徙路线上迁徙速度加快这一假说，该假说认为在过去几十年里，候鸟在中途停歇地的停留时间应该会减少。分析了几个气候预测指标，以了解芦苇莺（Acrocephalus scirpaceus）在穿越葡萄牙中部时的中途停歇生态。在过去十年中，迁徙芦苇莺在春季和秋季迁徙期间的最短停留时间都显著减少。途中温暖的气候条件应会增加食物供应，提高出发鸟类的身体状况以及前往葡萄牙途中出发地的质量，从而使候鸟减少在葡萄牙芦苇地的停留时间。
