Pre- and post-foraging movements of frugivorous birds in an eastern deciduous forest woodland, USA
Pre- and post-foraging movements of frugivorous birds in an eastern deciduous forest woodland, USA
复制标题
美国东部落叶林中食果鸟类觅食前后的活动
作者：
W. Hoppes
1981 - 1983年，我在美国东部落叶林林地的10个树落林隙和6个未受干扰的地点监测了食果鸟类觅食前后的行为。食果动物通常只在树落间隙中对结果植物进行一次觅食访问。食果动物在林冠不同高度觅食。冠层食果动物觅食后的移动速度比林下食果动物快。冠层食果动物从不从冠层植物中取食果实，尽管林下食果动物从冠层植物中取食果实。食果动物的运动远离树落间隙面向最近的差距与丰富的水果。这些结果表明，食果动物将分散小种子远比大种子，冠层食果动物有更高的概率分散种子到树落间隙比林下食果动物。
I monitored avian frugivore pre-and post-foraging behavior at ten treefall gaps and six undisturbed sites in an eastern deciduous forest woodland in USA from 1981 to 1983. Frugivores usually made only one foraging visit to a fruiting plant while in a treefall gap. Frugivore species foraged at different heights in the canopy. Postforaging movements of canopy frugivores were faster than understory frugivores. Canopy frugivores never took fruit from canopy plants although understory frugivores took fruit from canopy plants. Frugivore movements away from treefall gaps were oriented toward the nearest gap with abundant fruit. These results indicated that frugivores will disperse small seeds farther than large seeds and that canopy frugivores have a higher probability of dispersing seeds into treefall gaps than do understory frugivores.