Lilla Värtan

Aerial view of Lilla Värtan looking south. Lidingö in the left, Stockholm on the right, the bridge Lidingöbron in the foreground and Nacka in the background.

Lilla Värtan (Swedish: Smaller Värtan) or simply Värtan is a strait in Stockholm, Sweden. Separating mainland Stockholm from the island and municipality Lidingö, it stretches from Blockhusudden in the south to Stora Värtan in the north. Two bridges, collectively called Lidingöbron ("Lidingö Bridge") stretch over the strait.

While most of the coasts surrounding the strait are occupied by industries and the ferry terminals and oil tanks in the harbour area of Värtahamnen, natural beaches are found in both the southern and the northern end of the strait and the strait forms part of the Royal National City Park.[1][2]

Most common fish species are Baltic herring, sea trout, and salmon. Stationary predator fishes, e.g. northern pike and perch, are exposed to raised levels of mercury.[1]

The area is considered an important wintering location for several birds species, including swans, Eurasian coot, common pochard, tufted duck, black-headed gull, lesser black-backed gull, gadwall, and common tern. The strait constitutes an important locale, especially ice-free winters, besides the lake Isbladskärret on Djurgården.[1][2]

Vegetation on the shore lines of Lilla Värtan includes alder, purple loosestrife, common valerian, yellow loosestrife, reed canary-grass, tall fescue, lesser periwinkle, and giant knotweed.[3]

Levels of heavy metals and organic waste are high in the bottom silt and nutrient levels high in the water.[1] The level of phosphorus was 29 µg/l in 2005.[4]

See also

References

  1. 1 2 3 4 "Vattenvård : Sjöar och vattendrag : Lilla Värtan". Stockholm: Stockholms vatten. 2001 (?). Retrieved 2007-02-02. Check date values in: |date= (help)
  2. 1 2 "Vattenprogram för Stockholm 2000 : Faktaunderlag : Lilla Värtan" (PDF). Stockholm: Stockholms vatten. 2000 (?). Retrieved 2007-02-02. Check date values in: |date= (help)
  3. ↑ "Strandvegetation vid Lilla Värtan". Stockholm: Statens Fastighetsverk. Retrieved 2007-02-02.
  4. ↑ "Totalfosfor - Kust och hav : Lilla Värtan". Stockholm: City of Stockholm. 2005. Retrieved 2007-02-02.

Coordinates: 59°21′04″N 18°07′23″E / 59.35111°N 18.12306°E / 59.35111; 18.12306


This article is issued from Wikipedia - version of the Tuesday, August 11, 2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.