The relationship between fruit production and primate abundance in Neotropical communities
The relationship between fruit production and primate abundance in Neotropical communities
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新热带群落水果产量与灵长类动物丰度之间的关系
DOI：
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发表时间：
2001
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影响因子：
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通讯作者：
P. Stevenson
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文献类型：
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作者：
P. Stevenson
生态模型预测新热带地区的水果产量与灵长类动物丰度之间存在正相关关系。为了检验这种关系，我收集了灵长类动物丰度信息，并计算了 30 个新热带地区的不同水果产量指数。这些指数可分为三类：（1）基于果实陷阱的果实产量估算，（2）内生动物树的断面积和（3）这些树的密度。第一个估计是灵长类动物生物量 (r2=0.80) 和物种丰富度 (r2=0.64) 的最佳预测因子。使用水果陷阱估计的优点是它们考虑了生产率（这不是断面积或密度估计的情况），而使用断面积相对于密度估计的优点是它包含了由于树木大小而导致的一些预期变化。然而，通过使用底面积和密度指数，我发现果食猴和小型阔叶猴的底面积指数与灵长类动物生物量之间存在正相关性，但对于叶食性灵长类动物和种子捕食性灵长类动物则没有相关性。我还发现古树生物量与埃施韦莱拉树的丰度之间存在正相关关系。这些分析几乎没有支持无花果和棕榈等建议的关键资源的重要性。最后，当包括气候、地理和植物多样性变量时，水果产量仍然是新热带地区灵长类生物量的良好预测因子，但灵长类物种丰富度最好通过纬度梯度和植物物种丰富度来预测。
Ecological models predict a positive correlation between fruit production and primate abundance in the Neotropics. To test this relationship, I compiled information on primate abundance and calculated different indexes of fruit production for 30 Neotropical sites. These indexes can be grouped in three categories: (1) Fruit production estimates based on fruit traps, (2) basal area of endozoochorous trees and (3) density of these trees. The first estimate was the best predictor of both primate biomass (r2=0.80) and species richness (r2=0.64). The advantage of using fruit trap estimates is that they take into account production rates (which is not the case for basal area or density estimates), while the advantage of using basal area over density estimates is that it includes some of the expected variation due to tree size. However, using both basal area and density indexes I found a positive correlation between the basal area index and primate biomass for frugivorous monkeys and small platyrhines, but there was no correlation for folivorous and seed predator primates. I also found a positive correlation between pitheciine biomass and the abundance of Eschweilera trees. The analyses gave little support to the importance of suggested keystone resources such as figs and palms. Finally, when including climatic, geographic and plant diversity variables, fruit production continued to be a good predictor of primate biomass in the Neotropics, but primate species richness was best predicted by latitudinal gradients and plant species richness.