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Global patterns in seed germination after ingestion by mammals
Mammal Review ( IF 4.3 ) Pub Date : 2020-05-11 , DOI: 10.1111/mam.12195
Diego A. Torres 1 , John H. Castaño 1 , Jaime A. Carranza‐Quiceno 1
Affiliation  

Mammals play an important role in seed germination through the ingestion of fruits and seeds. Since seed germination is a basic step in seedling recruitment, understanding how mammals affect germination improves our understanding of the effect of loss of mammal populations on the dynamics of plant communities. We used meta‐analytical methods to describe global patterns in the effect of seed ingestion by mammals on seed germination success and rate. We collected data from 154 studies that included 115 mammal species and 448 plant species. Our results showed a positive cumulative effect of mammals on seed germination. However, this effect differed between mammalian orders; thus, some groups such as elephants, primates, and new world marsupials emerged as important enhancers of seed germination. Also, the effect varied depending on the plant family and the bioregion. Increased seed germination after ingestion was positively related to fast germination. This meta‐analysis, the first to synthesise and compare most of the information presently available on how mammals affect seed germination after ingestion, shows a global positive effect of mammals as enhancers of seed germination. However, behind that positive effect lies a diversity of neutral, negative, and positive effects of different magnitudes, which may have multifactorial explanations. We hope that the patterns presented here open up new questions and help guide future research efforts.

中文翻译:

哺乳动物摄入后种子萌发的全球模式

哺乳动物通过摄取果实和种子在种子萌发中发挥重要作用。由于种子萌发是幼苗招募的基本步骤,了解哺乳动物如何影响萌发可以提高我们对哺乳动物种群丧失对植物群落动态影响的理解。我们使用元分析方法来描述哺乳动物摄入种子对种子发芽成功率和速率影响的全局模式。我们收集了 154 项研究的数据,其中包括 115 种哺乳动物和 448 种植物。我们的结果显示哺乳动物对种子萌发有积极的累积效应。然而,这种效果在哺乳动物之间有所不同。因此,大象、灵长类动物和新世界有袋动物等一些群体成为种子萌发的重要促进者。还,效果因植物科和生物区而异。摄入后种子发芽增加与快速发芽呈正相关。这项荟萃分析首次综合和比较了目前关于哺乳动物如何影响摄入后种子萌发的大部分信息,显示了哺乳动物作为种子萌发促进剂的全球积极影响。然而,在这种积极影响的背后是不同程度的中性、消极和积极影响的多样性,这可能有多种因素的解释。我们希望这里介绍的模式能开辟新的问题,并有助于指导未来的研究工作。第一个综合和比较了目前关于哺乳动物如何影响摄入后种子萌发的大部分信息,表明哺乳动物作为种子萌发促进剂的全球积极影响。然而,在这种积极影响的背后是不同程度的中性、消极和积极影响的多样性,这可能有多种因素的解释。我们希望这里介绍的模式能开辟新的问题,并有助于指导未来的研究工作。第一个综合和比较了目前关于哺乳动物如何影响摄入后种子萌发的大部分信息,表明哺乳动物作为种子萌发促进剂的全球积极影响。然而,在这种积极影响的背后是不同程度的中性、消极和积极影响的多样性,这可能有多种因素的解释。我们希望这里介绍的模式能开辟新的问题,并有助于指导未来的研究工作。
更新日期:2020-05-11
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