Green tufted algae
Cladophora
Cladophora is a genus of branched green algae widely distributed in both freshwater and marine environments worldwide. It is characterized by a rough, filamentous structure that often forms dense mats or tufted cushions on solid substrates like rocks. Under high nutrient conditions, it tends to bloom massively, making it an important indicator of eutrophication. These algae provide shelter for many microorganisms, but the decomposition of large quantities can deplete oxygen levels.
Details
Oxygen production
High during the light phase; however, it can lead to local oxygen depletion at night through cellular respiration.
Habitat function
Serves as a hiding place and food source for insect larvae, amphipods, and juvenile fish.
Nutrient uptake
Very efficient uptake of dissolved phosphate and nitrate, which can contribute to the purification of the water body.
Food source for
Food source for various gastropods (snails) and phytophagous fish.
Human use
Subject of research in bionics (structure) and potential use as biomass for fertilizer or biofuels.
Ecology
Ecological role
Important primary producer and oxygen provider; provides microhabitats for invertebrates and serves as a spawning substrate.
Natural predators
Aquatic snails, herbivorous fish (e.g., rudd), tadpoles, and various crustaceans.
Competitor species
Other filamentous algae such as Spirogyra and higher aquatic plants (macrophytes) during nutrient competition.
Ecosystem service
Nutrient sequestration (nitrogen and phosphorus), oxygen production, and habitat provision.
Threats
Low threat; local control through herbicides or mechanical removal in recreational waters.
Scientific profile
Profile
Reproduction
Asexual via quadriflagellate zoospores or fragmentation; sexual via isogamy with isomorphic alternation of generations (in marine species).
Protection & threats
Status not on standard scale
Main threats
Herbicide runoff from agriculture; extreme acidification; mechanical removal in recreational waters.