The IBA includes humid grassland, bog, dry and wet heathland, broadleaved deciduous forest, rivers, streams and two reservoirs. Traditional uses of heathland are maintained.
Species of global conservation concern that do not meet IBA criteria: Crex crex (breeding).
BirdLife International (2021) Important Bird Areas factsheet: Heubachniederung/ Schwarzes Venn/ Borkenberge/ Halterner Seen. Downloaded from http://www.birdlife.org on 26/02/2021.