Trekanten (Stockholm)

On the eastern shore is a bathe next to the Liljeholmen metro station, a bus terminal, the light rail Tvärbanan, newly added flats, and some older buildings.

During the past 20 years, however, airing of bottom layers coupled with addition of potable water have improved the state of the lake.

[4] In late summer, phytoplankton stock is dominated by green algae paired equal levels of diatoms, cyanobacteria, and a species of eutroph carapace flagellate (Ceratium hirundinella).

Several of the blue green algae present in the lake are potentially poisonous and, notwithstanding non-alarming levels, therefore carefully monitored near the bathe.

[5] An inventory of lake bed fauna in 1997 produced a list of only 29 species/taxa including most common species, mostly freshwater gastropods, fireflies, and leeches but no beetles.

[5] In early summer the lake is home to a number of birds including thrush nightingale, common chaffinch, garden warbler, and blackcap.

Lake Trekanten viewed from Liljeholmen.