Filamentous green algae

Typha sj>.)). A bloom of filamentous green algae (Splrogyra sp.) occurred in the unshaded pond during Year 2. Fathead minnows (Pimephales promelas) were added to the ponds one week prior to the study each year. 

Filamentous green algae absorbed relatively high levels of radioactivity from water with a concentration factor of 846... 

A haploid moss spore germinates and gives rise to a protonema, a green multicellular tissue that superficially resembles a filamentous green alga. Under appropriate conditions, other moss cells can also be induced to form protonema. The protonema is typically subterranean and is rarely seen. 

Most botanists believe that mosses evolved from aquatic ancestors but there is debate about their evolutionary ancestry. It is commonly accepted by most botanists that mosses evolved from a simpler filamentous green alga. Although bryophytes appear intermediate in complexity between algae and vascular plants, they are unlikely to be an evolutionary missing link between these two groups. 

Loss of sensitive species of minnow and dace, such as black-nose dace and fathead minnow in some waters decreased reproductive success of lake trout and walleye, which are important sport fish species in some areas Visual accumulations of filamentous green algae in the littoral zone of many lakes, in some streams Distinct decrease in the species richness and change in species composition of the phytoplankton, zooplankton, and benthic invertebrate communities, although little if any change in total community biomass or production... 

---