Benthic algae communities

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... 

Algae colonize both natural (cobbles and sediments, macrophytes and wood) and artificial substrata (walls, infrastructures). Light attenuation limits the development of the algal community to the shallow areas of the river. Benthic chlorophyll in the... 

The goal of this chapter is to summarize the composition and community patterns of algae (with special consideration to benthic diatoms), zoobenthos, and fish that occur in Alpine freshwaters. The data presented are a synthesis of published research and represent the current state of knowledge on the different groups. The chapter closes with a general perspective on the biodiversity of alpine freshwaters. 

Pihl, L., Isaksson, I., Wennhage, H., Moksnes, P. O., 1995. Recent increase of filamentous algae in shallow Swedish bays Effects on the community structure of benthic faune and flora. Netherlands Journal of Aquatic Ecology, 29, 349-358. 

Constit. of Polytrichum commune and benthic green algae. 

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