Gibbous Duckweed

Gibbous Duckweed's surface coverage reduces light availability for submerged Slender Naiad

Dense duckweed coverage severely limits light penetration to submerged plants like Vallisneria

Both floating species compete for surface area and light, with larger Ludwigia potentially shading smaller duckweed

Floating heart and gibbous duckweed compete for surface light in temperate ponds, with duckweed often dominating

Dense duckweed mats block light to submerged water milfoil and may release growth inhibitors

Aggressive floating primrose-willow outcompetes and shades duckweed populations

Dense duckweed mats significantly reduce light penetration to submerged plants like Ottelia

Dense duckweed mats block light needed by floating heart species

Gibbous duckweed blocks light from reaching Brazilian watermilfoil, potentially releasing allelopathic compounds