Diversity of regenerating plants and seed dispersal in two canopy trees from Colombian Amazon forests with different hunting pressure.
Diversity of regenerating plants and seed dispersal in two canopy trees from Colombian Amazon forests with different hunting pressure.
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不同狩猎压力下哥伦比亚亚马逊森林的两种冠层树木的再生植物多样性和种子传播。
DOI：
10.15517/rbt.v56i3.5727
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发表时间：
2007
影响因子：
0.6
通讯作者：
P. Stevenson
中科院分区：
文献类型：
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作者：
V. A. Barrera Zambrano;Jenny Zambrano Moncada;P. Stevenson
狩猎可能对某些食果动物和种子传播媒介产生严重影响，这反过来又可能影响森林再生和植物多样性的格局。然而，当一个物种消失时，其他物种的数量可能会增加，这是由于竞争释放，补偿或不补偿，它们的生态作用。本研究的主要目的是测量灵长类动物群落的密度补偿，其可能对幼苗和幼树多样性的影响，并在两个树冠树木（Apeiba aspera和Hymenaea oblongifolia）的种子去除率的补偿。研究地点是Amacayacu国家公园（哥伦比亚亚马逊），在那里我们进行了哺乳动物物种的普查，使用线样带方法在两个森林不同程度的狩猎压力。利用植被样地对4 m2和25 m2的幼苗和幼树的植物多样性进行了量化，并设置了果实诱捕器来估计A. aspera和H.长圆叶。大型灵长类动物在人类住区附近较少遇到，而小型灵长类动物则表现出相反的模式，这表明了密度补偿效应。在大型灵长类动物分布的森林中，再生植物的多样性较高。在有大型灵长类动物的森林中，A. aspera，而H.长圆叶。总体而言，研究结果支持灵长类动物群落的密度补偿的假设，但是，没有强有力的证据，生态补偿方面的种子传播和再生的物种研究。最后，大的种子传播（如Lagothrix lagothricha）的存在与较高的植物多样性。
Hunting may have drastic effects on some populations of frugivores and seed dispersal agents, which in turn may affect patterns of forest regeneration and plant diversity. However, when a species disappears, it is possible that the population of other species increases due to competition release, compensating or not, their ecological roles. The main aim of this study was to measure density compensation in primate communities, their possible effects on seedling and sapling diversity, and compensation of seed removal rates in two canopy trees (Apeiba aspera and Hymenaea oblongifolia). The study site was Amacayacu National Park (Colombian Amazon), where we carried out a census of mammal species using line transect methods in two forests with different levels of hunting pressure. Vegetation plots were used to quantify plant diversity for seedlings and saplings (4 m2 and 25 m2 respectively), and fruit traps were set up to estimate seed removal of A. aspera and H. oblongifolia. Large primates were less frequently encountered near human settlements, while small primates exhibited the opposite pattern, suggesting a density compensation effect. The diversity of regenerating plants was higher in the forest where large primates occur. Seed removal was higher in forests with large primates for A. aspera, but not for H. oblongifolia. Overall, the results support the hypothesis of density compensation on the primate community; however, there is no strong evidence of ecological compensation in terms of seed dispersal and regeneration in the species studied. Finally, the presence of large seed dispersers (e.g. Lagothrix lagothricha) was associated with higher plant diversity.
影响因子：
1.9
作者：
GENTRY, AH
通讯作者：
GENTRY, AH
生物物理学.J.45。
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