algae

american

animal

anthropogenic

aquarium

aquatic

bad

bilge

bionomics

cleans

contaminating

contamination

crassipes

danger

drains

ecology

eichhornia

environment

environmental

eutrophication

feed

fertilizer

grows

human

hyacinth

impact

influence

invasive

issue

lack

lake

laken

macrophyte

macrophytes

nature

organic

oxygen

phosphates

plant

plants

pollution

protection

purification

reservoir

river

scenery

sewage

sewerage

species

treatment

utrophication

water

weed

winter