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Abstract

Non-native aquatic plant species have had significant ecological and physical effects on a diversity of wetland settings in China, where non-native species are well-known for their ecological dis-placements and the changes they have caused in various wetland categories. Giant salvinia (Salvinia molesta D. S. Mitch.), a floating aquatic fern native to South America, is one of the most noxious invasive weeds widely introduced in tropical and subtropical regions of the world. Recently, this species has been introduced and has become widespread in south China. In this study, we review and summarize the baseline information (introduction pathway, distribution status, uses, ecological impacts, and management) available for giant salvinia in China by field investigations and literature review. Giant salvinia was first introduced in China as aquarium plant, and has established naturalized populations in 14 Provincial-level administrative regions. Now, giant salvinia become a potential threat the native biodiversity, grain production, and human health. This study provides valuable information and recommendations for managing and controlling giant salvinia in tropical and subtropical regions.

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