“冬天已经来了,春天还会远吗?”在人们期盼的春天提前到来的时

“冬天已经来了,春天还会远吗?”在人们期盼的春天提前到来的时候,许多生态系统中相互依赖的物种,开始出现生殖发育不同步的危险变化。如图所示在某国家公园记录到的随着橡树发芽长叶时间的提前出现的一些现象。请分析并作出合理解释。

(1)据图写出食物链:_______________________________________________________。

(2)该生态系统中出现上述生殖发育不同步的原因是_____________________________

(3)引起橡树提前发芽的信息类型主要是__________________________________。

(4)橡树发芽长叶时间提前对鸟类造成的影响是什么?____________________________

(5)根据上述资料分析全球变暖对生物多样性可能造成的影响是___________________

 

答案

(1)橡树→毛虫→鸟 (2)气温上升提前,橡树发芽长叶时间提前,导致毛虫数量峰值提前;但鸟类哺育幼鸟时间不变 (3)物理信息 (4)哺育幼鸟时期缺少食物,使幼鸟的成活率下降 (5)全球变暖使某些植物的发芽长叶时间提前,造成相关动物因生殖发育与之不同步而无法适应新变化而死亡,甚至灭绝,从而影响生物多样性

 

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