Title: Effects of Tide on Distribution of Invasive Species Sagittaria graminea in Yalu River Estuary Wetland
Abstract: Estuary wetland has been considered as the bridgehead for invasive species due to its special environment.Sagittaria graminea,an aquatic plant which is native to North American,was found in our recent field investigation in Yalu River estuary wetland.It is recorded in East Asia for the first time.The results of our field survey indicated that there were four populations of Sagittaria graminea distributed in Yalu River Estuary wetland with a range of about 30 km along the river.The largest population covers about 2 000 m2 in this area and shows a great exclusiveness.The effects of tide on the distribution patterns of the invasive species Sagittaria graminea in Yalu River Estuary wetland were studied.The results indicated that reasons for the species planting in low marsh is the demand for a water level to some degree or submersion caused by tide of the species.It was also found that the distribution of this species was also affected by salinity of the water body.Besides,the possible invasive routes and ecological risks were also discussed.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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Cited By Count: 2
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