The effect of temperature on waterhyacinth stem base regrowth

摘要

Waterhyacinth (Eidihornia crassipes (Mart.) Solms) is a perennial floating aquatic plant native to the Amazon region in South America. It is a monocot and a member of the Pontederiaceae family. In the United States, waterhyacinth has become invasive across the southeast, the Gulf Coast and in California. The first recorded introduction of waterhyacinth into the United States was prior to 1890 for use as an ornamental in ponds (Penfound and Earle 1948, Owens and Madsen 1995). It was first reported inCalifornia in Yolo County in 1904 (Bock 1968) and has become a widespread invasive species in the Sacramento-San Joaquin River Delta (hereafter the Delta). The rapid growth and ease of dispersal has led to intensive management operations for controllingwaterhyacinth infestations. The California Division of Boating and Waterways treated 3,173 acres of floating aquatic vegetation, primarily waterhyacinth, in the Delta in 2017.