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Plant species composition in an international trading port and residential areas of Kobe, Japan
Author(s) -
Kawamata Emi,
Shimono Yoshiko,
Tominaga Tohru
Publication year - 2018
Publication title -
weed biology and management
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 36
eISSN - 1445-6664
pISSN - 1444-6162
DOI - 10.1111/wbm.12135
Subject(s) - alien , habitat , invasive species , introduced species , range (aeronautics) , ecology , biology , alien species , mediterranean climate , vegetation (pathology) , distribution (mathematics) , geography , population , medicine , mathematical analysis , materials science , demography , mathematics , pathology , sociology , composite material , census
Invasive alien plants have caused negative ecological and economic impacts and numerous studies have focused on determining which traits make these plants successful invaders. Although it is commonly believed that only a small proportion of introduced species can become invasive, it is unknown why many alien species fail to establish. In order to identify the alien species that are exhibiting a limited distribution in their new habitat, the vegetation in an international trading port, which is a primary site for the introduction of alien plants, and residential areas of Kobe, western Japan, were surveyed every month from April–October, 2014. A total of 167 species, of which 59.3% were annual and 61.2% were alien, was found. Species that originated in Mediterranean regions were the dominant alien species, followed by those from North America. A principal component analysis showed that the species compositions were different between the port and the residential areas, particularly in spring. The species from the port areas were major weeds from the cereal crop fields of North America and Australia, but were limited in distribution in Japan. The residence time might be too short to allow them to expand or climatic differences between the areas where these aliens are naturally dominant and Japan could serve as ecological barriers to the range expansion of such species.