Deer grazing changes seed traits and functions of grazing‐intolerant plants,Plant Species Biology

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Deer grazing changes seed traits and functions of grazing‐intolerant plants
Plant Species Biology ( IF 1.1 ) Pub Date : 2020-10-31 , DOI: 10.1111/1442-1984.12300
Yushin Shinoda _{1,

2} , Kei Uchida ₃ , Asuka Koyama ₄ , Munemitsu Akasaka ₂

Affiliation

Grazing by ungulates can affect seed production in plants, and consequently seed recruitment into seed banks, which is a plant strategy to increase their resilience. The impact of grazing on seed quantity has been well studied; however, the impact of grazing on seed quality has received less attention, despite its role in determining the longevity of a seed bank. Here, we examined the impact of ungulate grazing on seed quality in plants, using two grazing‐intolerant grassland species (Hemerocallis dumortieri var. esculenta and Geranium yesoense var. nipponicum). We found that grazing reduced seed length and weight, while increasing the germination rate. These changes in seed quality induced by grazing could reduce the persistence of seed banks and would thus seem to be an important mechanism involved in the impact of ungulate grazing on plant population dynamics.

中文翻译：

放牧鹿会改变不耐吃草植物的种子性状和功能

有蹄类动物放牧会影响植物的种子生产，从而影响种子向种子库的募集，这是提高植物抗逆能力的一种植物策略。放牧对种子数量的影响已得到很好的研究。然而，放牧对种子质量的影响尽管引起了种子库寿命的影响，但很少受到关注。在这里，我们检测了植物种子质量有蹄类动物放牧的影响，使用两个放牧，草场不耐品种（萱草dumortieri变种乌贼和天竺葵yesoense变种nipponicum）。我们发现放牧减少了种子的长度和重量，同时提高了发芽率。放牧引起的种子质量的这些变化可减少种子库的持久性，因此似乎是有蹄类放牧对植物种群动态影响的重要机制。

更新日期：2020-10-31

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