Fruiting of fleshy-fruited plants and abundance of frugivorous birds: Phenological correspondence in a temperate forest in central Japan
Fruiting of fleshy-fruited plants and abundance of frugivorous birds: Phenological correspondence in a temperate forest in central Japan
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DOI：
10.2326/osj.2.25
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发表时间：
2003
影响因子：
0.6
通讯作者：
Yoichiro Takanose;T. Kamitani
中科院分区：
文献类型：
--
作者：
Yoichiro Takanose;T. Kamitani
我们调查了在日本中部的温带森林中，肉质果实植物的果实物候和食果鸟类的丰度之间的季节对应关系。大部分肉质果实在秋季成熟，此时食果鸟类最多。这种对应关系比位于日本南部的暖温带森林更早发生;东亚的这些关系与北美和欧洲温带地区的关系一致。我们还研究了是否丰富的食果鸟类导致有益的影响，种子传播之间的肉质果实植物。褐耳白头翁Hypsipetes amaurotis被认为是许多肉质果实植物的重要种子传播者，因为它在整个果实季节出现的频率很高，而且它的大嘴巴大小允许它吞下研究地点发现的所有大小的水果。虽然许多棕耳鳞茎和其他食果鸟类在秋季出现，水果去除率在秋季水果品种并不总是高于夏季水果品种。因此，单靠食果鸟类的丰富并不能充分解释肉质果实植物集中的果实物候。
We investigated the seasonal correspondence between the fruiting phenology of fleshy-fruited plants and the abundance of frugivorous birds, in a temperate forest, in central Japan. The majority of fleshy fruits ripened in the fall when frugivorous birds were most abundant. This correspondence occurred earlier than in a warm temperate forest, located in southern Japan; these relationships in East Asia coincide with those of the temperate regions of North America and Europe. We also examined whether the abundance of frugivorous birds led to profitable effects for seed dispersal among fleshy-fruited plants. The Brown-eared Bulbul Hypsipetes amaurotis was considered to be an important seed disperser for many fleshy-fruited plants because of its high frequency of occurrence throughout the fruiting season, and its large gape size, which allowed it to swallow all sizes of fruits found at the study site. Although numerous Brown-eared Bulbuls and other frugivorous birds were present in the fall, fruit removal rates in fall-fruiting species were not always higher than in summer-fruiting species. The abundance of frugivorous birds alone could therefore not adequately explain the concentrated fruiting phenology among fleshy-fruited plants.