Intra-crown variation in leaf herbivory and seed production in striped maple, Acer pensylvanicum L. (Aceraceae)
Intra-crown variation in leaf herbivory and seed production in striped maple, Acer pensylvanicum L. (Aceraceae)
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DOI：
10.1007/bf00380924
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发表时间：
1988-10
期刊：
影响因子：
2.7
通讯作者：
R. Marquis
中科院分区：
文献类型：
--
作者：
R. Marquis
本文研究了五棱槭（Acer pendicum）食叶性的空间变异格局及其对种子生产和枝条生长的影响。实验去除25%的叶面积，从每个直接对着一个发展中的果序显着减少种子数的果序。当叶面积被从相邻的叶子中去除，但不直接对着正在发育的果序，种子产量没有减少。总之，这些结果表明，只有直接对着果序的叶片的光合产物有助于附近果序的种子生产。叶面积的实验性去除的影响并没有持续到第二年，这表明第二年春天储存产品的动员独立于先前的治疗。在研究年期间，叶食草动物对该植物物种的负面影响可能很小，这是由于（1）在普查树木的树冠内局部损害的发生率较低，以及（2）叶面积损失延迟到果实发育完成。
Patterns of spatial variation in leaf herbivory and the effects of this variation on seed production and twig growth were studied in striped maple,Acer pensylvanicum(Aceraceae). Experimental removal of 25% of the leaf area from each of four leaves directly subtending a developing infructescence significantly reduced seed number in that infructescence. When leaf area was removed from leaves neighboring to, but not directly subtending developing infructescences, no reduction in seed production occurred. Together, these results suggest that only photosynthate from leaves directly subtending infructescences contributes to seed production in nearby infructescences. Effects of the experimental removal of leaf area did not persist the second year, suggesting that mobilization of storage products the following spring occurred independent of prior treatment. There was probably little negative impact of leaf herbivores on this plant species during the study year due to (1) low occurrence of localized damage within the crowns of censused trees and (2) delay of leaf area loss until completion of fruit development.