Lappkärret

Lappkärret
Lappkärret
	Norra Djurgården
References

Lappkärret is a small

Norra Djurgården in north-eastern Stockholm, Sweden, near Stockholm University. It is one of six lakes in Djurgården, the others being: Lillsjön, Uggleviken, Isbladskärret, Laduviken, and Spegeldammen

.

Through its location in the

University of Stockholm located nearby. As the name implies, it used to be a marsh until construction works for the student apartments at Lappkärrsberget punctured a subsoil spring in the 1960s. Today, the lake empties into the strait Lilla Värtan through a culvert and forms part of a proposed nature reserve in Norra Djurgården.^[1]

Catchment area

Most of the catchment area is composed of open fields and areas of

deciduous forest, with a single trafficked road passing west of the lake. Next to a group of nearby allotment-gardens is a 4-H farmyard with horses and sheep.^[2]

Environmental influence

Most of the inflow is believed to come from subsoil water with some contribution from stormwater and snow-melting. Local land usage produces small amounts of nutrients and no conduits guides surface water to the lake. The lake is alkali and saliferous with high levels of oxygen, phosphorus, and phosphate, but low levels of inorganic nitrogen. Notwithstanding various levels of chlorophyll, water transparency exceeds the depth of the lake and pH is reported as constant.^[2]

Flora and fauna

In the mid-1980s, isolated occurrences of

gastropods, and dragonfly larvae and today also the dragonfly species Aeshna osiliensis, common winter damselfly, and several others.^[3]

The only fish in the lake is

Slavonian grebe, mallard, little grebe, and gadwall. The black-headed gull is a key species, offering protection to other species, and has now abandoned the lake which is, however, still considered as of great importance to bird life with several species still breeding there. Several protected species of amphibians can be seen by the lake, including common frog, common toad, moor frog, and smooth newt.^[3]

Visiting

Both the lake and the surrounding national park is easily accessible by metro, bus, bicycle, or by foot. The nearest metro station is Universitetet and bus 50 stops nearby.

Notes

^ ^a ^b Vattenprogram, p 2.1
^ ^a ^b Vattenprogram, p 2.3
^ ^a ^b Vattenprogram, p 2.3-2.6

References

"Vattenprogram för Stockholm 2000 - Lappkärret" (PDF) (in Swedish). Stockholm vatten. Archived from the original (PDF) on 2007-09-27. Retrieved 2007-05-25.
"B144 Lappkärret - nytt utlopp ("New outlet")" (in Swedish). City of Stockholm. Archived from the original on 2007-09-28. Retrieved 2007-05-25.

External links

"Lappkärret" (in Swedish). Stockholm vatten. Archived from the original on 2007-09-27. Retrieved 2007-05-25.

[vattenprogram-2.1-1] Vattenprogram, p 2.1

[vattenprogram-2.3-2] Vattenprogram, p 2.3

[vattenprogram-2.3-6-3] Vattenprogram, p 2.3-2.6

[1]

[2]

[3]