Oligotrophic lakes and pools, and rarely also artificial ponds, occur mainly in the boreal zone, Atlantic region of Europe and in mountain areas. They are sensitive to the input of nutrients from agriculture, atmospheric deposition and natural sources. Their aquatic vegetation is characterised by low productivity and the occurrence of highly specialised species, which usually decline after eutrophication due to competition from more productive, nutrient-demanding aquatic species.
Chytrý M., Tichý L., Hennekens S.M., Knollová I., Janssen J.A.M., Rodwell J.S. … Schaminée J.H.J. (2020) EUNIS Habitat Classification: expert system, characteristic species combinations and distribution maps of European habitats. Applied Vegetation Science 23: 648–675. https://doi.org/10.1111/avsc.12519
Version 2021-06-01, https://doi.org/10.5281/zenodo.4812736.
For the official presentation of the EUNIS Habitat Classification from the European Environment Agency, please see: EUNIS Terrestrial Habitat Classification 2021. The FloraVeg.EU presentation may show modifications and partial updates to the habitat classification.