The IUCN/SSc Invasive Species Specialist Group (ISSG) depicted in “GLOBAL INVASIVE SPECIES DATABASE,” it explains, “Originally from South America, Eichhornia crassipes is one of the worst aquatic weeds in the world. Its beautiful, large purple and violet flowers make it a popular ornamental plant for ponds. It is now found in more than 50 countries on five continents. Water hyacinth is a very fast growing plant, with populations known to double in as little as 12 days. Infestations of this weed block waterways, limiting boat traffic, swimming and fishing. Water hyacinth also prevents sunlight and oxygen from reaching the water column and submerged plants. Its shading and crowding of native aquatic plants dramatically reduces biological diversity in aquatic ecosystems.” The population of a certain organism would be the amount of species of a creature or substance in a particular ecosystem. Biotic animals and plant populations who live off of sunlight and/or oxygen would decrease due to the lack of their necessities and of perished