Relative Importance of Seed‐Bank and Post‐Disturbance Seed Dispersal on Early Gap Regeneration in a Colombian Amazon Forest
Relative Importance of Seed‐Bank and Post‐Disturbance Seed Dispersal on Early Gap Regeneration in a Colombian Amazon Forest
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种子库和干扰后种子传播对哥伦比亚亚马逊森林早期间隙再生的相对重要性
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
P. Stevenson
中科院分区：
文献类型：
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作者：
L. S. Castillo;P. Stevenson
早期林隙再生可能是由干扰后的种子雨和种子、幼苗或芽库（即重新发芽）产生的。每个过程的相对重要性可能取决于几个因素（例如，果实/种子产量、种子传播者的丰度和行为、间隙特征等）。我们使用从森林到间隙和种子雨围栏的土壤移植，通过实验比较了种子库和种子雨对亚马逊森林（哥伦比亚扎菲尔生物站）幼苗早期补充的重要性。我们发现，在为期 8 个月的研究中，种子库比种子雨贡献了更多数量的个体和物种。幼苗补充率低可能与狩猎和/或森林水果产量低导致动物种子传播者数量减少有关。
Early forest gap regeneration may be generated by postdisturbance seed rain and by seed, seedling or bud banks (i.e., resprouting). The relative importance of each process may depend on several factors (e.g., fruit/seed production, abundance and behavior of seed dispersers, gap characteristics, etc.). We experimentally compared the importance of seed‐bank and seed‐rain affecting early recruitment of seedlings in an Amazonian forest (Zafire Biological Station, Colombia), using soil transplants from forests to gaps and seed rain enclosures. We found that, during the 8‐mo study, the seed‐bank contributed with a larger number of individuals and species than seed‐rain. The low seedling recruitment rates may be associated with reduced populations of animal seed‐dispersers due to hunting and/or low levels of forest fruit production.