Biotop is the second album by German electronic musician Asmus Tietchens, released in 1981 on Sky Records. Tietchens recorded the album at Audiplex Studios with producer and mentor Okko Bekker, who is credited as Rokko Ekbek. Departing from the musical style of the musician's debut album Nachtstucke (1980), Biotop contains sixteen short electronic pop tracks that are characterised by their immediate nature but unusual synth lines, tones and melodies. Bekker compared the music to radio time signals. Indeed, the liner notes state the album was performed by Das Zeitzeichenorchester, which translates to The Time-Signal Orchestra, although in reality this is an alias for Tietchens, the album's only performer.