Cap alga
Oedogonium
Oedogonium is a genus of unbranched, filamentous green algae commonly found in freshwater environments globally. They are characterized by a unique method of cell division that results in ring-like scars, known as apical caps, at the ends of certain cells. These algae typically grow attached to aquatic plants or stones, though they can also form free-floating mats under nutrient-rich conditions.
Details
Oxygen production
High during the light phase due to intensive photosynthetic activity.
Habitat function
Provides spawning substrate for fish and habitat for various micro-invertebrates.
Nutrient uptake
Effective uptake of nitrogen and phosphorus, contributing to the reduction of eutrophication.
Food source for
Snails, tadpoles, insect larvae, and herbivorous fish.
Human use
Studied in cell biology research and occasionally in biofuel research.
Ecology
Ecological role
Important primary producer in stagnant waters; serves as a substrate for epiphytes and as a hiding place for micro-organisms.
Natural predators
Herbivorous fish, freshwater snails, and various zooplankton species.
Competitor species
Other filamentous algae such as Spirogyra or Cladophora, as well as higher aquatic plants during nutrient competition.
Ecosystem service
Oxygenation of the water and sequestration of excess nutrients such as nitrate and phosphate.
Threats
Extreme herbicide pollution or massive mechanical disturbance of shore areas.
Scientific profile
Protection & threats
Main threats
Input of herbicides from agriculture, extreme water acidification, and massive mechanical disturbances of littoral vegetation.