Torres Juan C, Gutiérrez Julio R, Fuentes Eduardo R
Instituto de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Casilla, 114-D, Santiago, Chile.
Oecologia. 1980 Jan;46(2):161-163. doi: 10.1007/BF00540121.
This paper reports the results of experimental defoliation of two common matorral species: Lithraea caustica and Colliguaya odorifera. L. caustica and C. odorifera are the matorral species previously shown to exhibit the highest and lowest levels of natural defoliation by browsing. Experimental defoliation was performed at four levels: 0% (controls), 25%, 66%, and 100%. C. odorifera exhibited vegetative responses stronger than controls only in the two highest levels of defoliation (66% and 100%), whereas L. caustica responded vigorously at the 25% and 100% levels. The results are related to the observed position of both species in the matorral community and their relative defoliation risks by natural and introduced herbivores.
本文报告了对两种常见灌丛物种——苛性利氏木（Lithraea caustica）和香胶柯利桂（Colliguaya odorifera）进行实验性落叶处理的结果。苛性利氏木和香胶柯利桂是先前研究表明在自然状态下因啃食而呈现出最高和最低落叶水平的灌丛物种。实验性落叶处理设置了四个水平：0%（对照）、25%、66%和100%。香胶柯利桂仅在落叶程度最高的两个水平（66%和100%）表现出比对照更强的营养生长反应，而苛性利氏木在25%和100%的落叶水平下反应强烈。这些结果与这两个物种在灌丛群落中观察到的位置以及它们遭受自然和引入的食草动物啃食的相对落叶风险有关。
