Leaf growth response to simulated herbivory: a comparison among seagrass species
Leaf growth response to simulated herbivory: a comparison among seagrass species
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DOI：
10.1016/s0022-0981(97)00084-1
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发表时间：
1998-01-31
影响因子：
2
通讯作者：
Merino, M
中科院分区：
文献类型：
--
作者：
Cebrian, J;Duarte, CM;Merino, M
我们研究了七种海草的每枝叶子生长速率（mg DW芽（-1）天（-1））对剪叶模拟的草食动物梯度的响应。修剪程序旨在模拟食草动物的移除，食草动物在每次进食攻击时仅消耗单个枝条的叶子，并且不选择性地在相同的枝条上进食（即，大多数变温脊椎动物和无脊椎食草动物）。我们测试了（1）这种脱叶过程是否通常不会抑制芽叶生长速率（即，（2）叶片养分含量、相对叶片生长速率、短枝平均间距和根茎直径是否影响每枝叶片生长速率对落叶梯度的响应。在15个处理群体中的9个群体中，修剪处理的每枝叶片生长速率不同（ANOVA，p < 0.05），荟萃分析技术揭示了显著的总体变化（卡方检验，p < 0.05）。
We examined in seven seagrass species the response of the leaf growth rate per shoot (mg DW shoot(-1) day(-1)) to a gradient of herbivory simulated by leaf clipping. The clipping procedure was intended to mimic the removal by herbivores which only consume the leaves of a single shoot at every feeding attack and which do not feed over the same shoots selectively (i.e., most poikilotherm vertebrate and invertebrate herbivores). We tested whether (1) this defoliation procedure does not normally depress shoot leaf growth rates (i.e., the occurrence of compensatory leaf growth), and (2) whether leaf nutrient content, relative leaf growth rate, average distance between consecutive short shoots and rhizome diameter influence the response of the leaf growth rate per shoot to a gradient of defoliation. The leaf growth rate per shoot varied among clipping treatments in nine of the 15 populations treated (ANOVA, p < 0.05) and meta-analyses techniques revealed a significant overall variation (chi(2) test, p