Lesser water-parsnip
Berula erecta
Lesser water-parsnip is a perennial herbaceous aquatic plant belonging to the Apiaceae family. It typically grows 30 to 80 cm tall in or near clean, slow-moving freshwater habitats like springs and ditches. The plant features pinnate leaves and white compound umbels, and it can adapt to different water levels by forming submerged or emergent foliage.
Details
Oxygen production
Produces oxygen, especially through its submerged leaves directly into the water column.
Habitat function
Important spawning ground and hiding place for aquatic fauna; stabilization of sediments.
Nutrient uptake
Effective uptake of nitrates and phosphates from both water and sediment for biomass production.
Food source for
Food source for various insect larvae; pollen and nectar source for hoverflies and beetles during the flowering period.
Human use
Formerly used occasionally as a wild vegetable or medicinal plant; no longer recommended today due to the risk of confusion with the highly toxic water hemlock.
Ecology
Ecological role
Provides habitat and shelter for juvenile fish and aquatic invertebrates; stabilizes the substrate in flowing waters through creeping rhizomes.
Natural predators
Waterfowl, muskrats, and various aquatic insect larvae.
Competitor species
Other reed plants and hydrophytes such as watercress (Nasturtium officinale) or floating sweet-grass.
Ecosystem service
Contributes to water purification through nutrient uptake and stabilizes banks and beds of small flowing waters.
Threats
Stream channelization, eutrophication from fertilizer runoff, groundwater depletion, and intensive mechanical ditch clearing.
Scientific profile
Profile
Reproduction
Generative reproduction via seeds in compound umbels; very effective vegetative dispersal through above- and below-ground runners (stolons), which can form dense stands.