How far do Neotropical primates disperse seeds?
How far do Neotropical primates disperse seeds?
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新热带灵长类动物传播种子的距离有多远？
DOI：
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发表时间：
2017
影响因子：
2.4
通讯作者：
F. Silveira
中科院分区：
文献类型：
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作者：
L. Fuzessy;C. Janson;F. Silveira
种子传播距离（SDD）是脊椎动物介导的种子传播过程的重要组成部分：种子远离亲本植物沉积的平均距离代表植物再生的起始模板。我们提出了一个简单的模型来解释和预测观察到的平均传播距离的测量，我们假设这是种子在传播者肠道中保留多长时间的结果，传播者每单位时间移动的速度以及动物旅行路径相对于远离种子源的直线距离的扭曲程度。我们检索了26项已发表的研究，包括9个灵长类动物物种分散到112个植物物种的研究的扩散距离的数据。我们使用肠道通过时间（TT）作为肠道内停留时间的代表，使用分散剂每小时的行进路径作为移动速率的代表，使用相对于家域区域的每日路径长度作为路径扭曲（PT）的相关性。我们用新热带区灵长类动物的比较数据来说明这个模型。这三个变量解释了平均SDD的90%的变化。路径分析表明，额外的变量只产生间接影响。我们的模型可以应用于灵长类动物种群的详细的种子传播数据缺失，并帮助评估灵长类动物物种的保护优先级，根据他们提供的潜在服务，在森林再生方面。
Seed dispersal distance (SDD) is a vital component of vertebrate‐mediated seed dispersal process: the average distance at which seeds are deposited away from the parent plant represents the starting template of plant regeneration. We present a simple model to explain and predict observed measures of average dispersal distance and we hypothesize that it is a consequence of how long seeds are retained in the disperser's gut, how rapidly the disperser moves per unit time and how twisted the animal travel path is relative to the straight‐line distance moved away from the seed source. We retrieved data on dispersal distances from 26 published studies including nine primate species dispersing up to 112 plant species per study. We used gut transit time (TT) as a proxy for residence time inside the gut, the disperser's travel path per hour as proxy for movement rate, and the daily path length relative to the home range area as a correlate of path twisting (PT). We illustrate this model with comparative data on Neotropical primates. These three variables explained 90% of the variation in the average SDD. Path analysis indicates that additional variables exerted only indirect effects. Our model can be applied to primate populations for which detailed seed dispersal data are missing, and help evaluate conservation priorities for primate species according to the potential service they provide in terms of forest regeneration.