Climate change as reflected in a naturalist's diary, Middleborough, Massachusetts
Climate change as reflected in a naturalist's diary, Middleborough, Massachusetts
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DOI：
10.1676/04-016
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发表时间：
2004-09-01
期刊：
影响因子：
--
通讯作者：
Imbres, C
中科院分区：
文献类型：
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作者：
Ledneva, A;Miller-Rushing, AJ;Imbres, C
当地博物学家的观察可能提供有价值的物候事件记录，我们可以用这些记录来衡量物种对气候变化的反应。为了验证这个想法，我们检查了一位敬业的博物学家的记录，她一直在观察鸟类的到达、植物的开花、蝴蝶的出现，以及青蛙在她位于马萨诸塞州东南部米德尔伯勒的农场的召唤。从她1970年到2002年的记录中，我们提取了24个物种的春季物候事件的首次观测数据-总共650次观测。在此期间，当地年平均气温上升了2.0摄氏度。22种鸟类表现出更早的活动，16种鸟类中有5种比30年前明显提前到达。22个物种对变暖做出了反应，有4个物种(两只鸟、一只青蛙和一种植物)在气温较高的年份显示出统计上显著的早期活动。其他18种物种表现出类似的趋势，但在统计上没有显著意义。
Observations by local naturalists may provide valuable records of phenological events with which we can measure the response of species to climate change. To test this idea, we examined the records of a dedicated naturalist who has been observing bird arrivals, plant flowering, butterfly appearance, and frog calling on her farm in Middleborough, southeastern Massachusetts. From her 1970 to 2002 records, we extracted data on first observations of spring phenological events for 24 species-650 observations in all. Over that time, average annual local temperatures rose by 2.0degrees C. Twenty-two species showed earlier activity, with 5 of the 16 bird species now arriving significantly earlier in the year than they did 30 years ago. Twenty-two species responded to warming temperatures, with 4 species (two birds, one frog, and one plant) showing statistically significant earlier activity in years with warmer temperatures. The other 18 species showed similar trends, but they were not statistically significant.