Poor seed dispersal, seed germination and seedling survival explain why rubber trees (Hevea brasiliensis) do not expand into natural forests in Xishuangbanna, southwest China

Autor: Ming Cun, Xiangshuai Ai, Tian Yaohua, Jiang Xie, Yue Hai, Zhou Huiping, Chen Guoyun
Rok vydání: 2015
Předmět:
Zdroj: Forest Ecology and Management. 358:240-247
ISSN: 0378-1127
DOI: 10.1016/j.foreco.2015.09.023
Popis: Studying seed dispersal and the associated processes of germination, seedling establishment and survival are important for understanding plant regeneration dynamics and dispersal ability, especially for introduced plant species. Rubber trees (Hevea brasiliensis) have been introduced and cultivated in Xishuangbanna in southwest China for over 60 years. However, almost no adult rubber trees occur in natural forests in the region. In order to determine the factors preventing the expansion of rubber trees into natural forests, we investigated the seed dispersal, seed germination and seedling recruitment of rubber trees. Rubber seeds released in natural forests were frequently visited and largely handled by Rattus spp., but the rubber seeds released in rubber plantations were seldom visited or fetched by any animals, indicating that habitat type had a significant effect on the fate of rubber seeds (P
Databáze: OpenAIRE