Shield alga
Coleochaete
Coleochaete is a genus of green algae in the class Charophyceae, considered close relatives of land plants. They form flat, often circular or branched thalli that typically grow epiphytically on aquatic plants or stones in clean freshwater. They are characterized by specialized cells with long bristles surrounded by a gelatinous sheath.
Details
Oxygen production
Contributes locally to the oxygen enrichment of the water.
Habitat function
Serves as a settlement substrate for microorganisms.
Nutrient uptake
Absorbs nitrogen and phosphorus directly from the water column.
Food source for
Microorganisms and benthic invertebrates.
Human use
Scientific research object in evolutionary biology and botany.
Ecology
Ecological role
Primary producer in the littoral zone; model organism for studying the colonization of land by plants due to morphological similarities to bryophytes.
Natural predators
Benthic grazers such as snails and insect larvae.
Competitor species
Other periphytic algae and biofilms.
Ecosystem service
Oxygen production and nutrient fixation in near-shore areas.
Threats
Eutrophication of water bodies and loss of macrophyte substrates.
Scientific profile
Protection & threats
Main threats
Eutrophication (nutrient input), water turbidity (light limitation), and mechanical destruction of reed beds and aquatic plant stands.