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Earthcache - Uggleviken

A cache by Mr. Chapel Send Message to Owner Message this owner
Hidden : 07/25/2010
Difficulty:
1.5 out of 5
Terrain:
1.5 out of 5

Size: Size:   other (other)

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Geocache Description:


Uggleviken är ett kärr på Norra Djurgården i Stockholm.

Uggleviken var tidigare en del av samma östersjövik som Husarviken, Lillsjön, Laduviken och Storängsbotten. Genom landhöjningen har kontakten med havet gått förlorad. Idag saknar Uggleviken fri vattenyta och är ett igenväxande alkärr. Det finns inga större naturliga tillopp. En del av tillrinningen kommer från bebyggelsen norr om Valhallavägen. Utflödet går under Husarbron till Husarviken. Vid Ugglevikens södra sida finns ridvägar och järnvägsspår, på norrsidan sträcker sig den hårt trafikerade Björnnäsvägen.

Uggleviken är på grund av sin storlek och relativa orördhet Stockholms förnämsta fuktlövskog och har i Natur i Stockholm klassats som ett område av mycket stort naturvärde. Botaniskt är området ett av de intressantaste i Stockholm med sällsynta arter som trindstarr, gullpudra, pilört och kärrbräken. Fågellivet är rikt med bl.a. näktergal, svarthätta, järnsparv och ibland gärdsmyg.

För att logga denna cache:

1. Hur stort området är idag?
2. Maila oss vilken höjd över havet som visats av din GPSr
3. Frivilligt att gå till den givna koordinater och ta en bild på dig eller din GPSr med Uggleviken i bakgrunden

Vänligen skriv din email och din logga på engelska, förstår vi inte svenska!

Skicka oss svaren, och du kan logga in direkt. en logg tillstånd behöver du inte vänta. Om något är fel, kommer vi att kontakta ...

 

Uggleviken (Swedish: Owl Bay) is a former bay and lake at Norra Djurgården, a rural area in north-eastern central Stockholm, Sweden, forming part of the national city park Ekoparken.

Together with Lillsjön, Laduviken, and Storängsbotten, Uggleviken used to be part of a bay forking across Norra Djurgården. Today it is reduced to a marsh or a wet alder forest with patches of reeds in its centre. It is regarded as of great natural value and have been mentioned as one of the most interesting botanical and ornithological areas in Stockholm.

The marsh's catchment area, considered as one of the most important wetlands in Stockholm and an important biotope for many species, is relatively untouched by humans and mostly contains forest and open terrain. Björknäsvägen, a densely trafficked road stretching along the northern side of Uggleviken, reduces accessibility to the wetland, as do the suburban railway Roslagsbanan and an industrial railway south of it. The Royal Institute of Technology occupies approximately 20 per cent of the catchment area and on the west side are a number of allotment-gardens.

The major inflow comes from stormwater and surface runoff. Pipes from settled areas opening out on the southern side are believed to be the major environmental burden together with run-off water from the road north of the wetland. High levels of phosphorus have been recorded in the outflow.

Botanically, the area is unique with a presence of many rare species such as Water Sedge, Lesser Tussock-sedge, Alternate-leaved Golden-saxifrage, Small Water-pepper, Marsh Stitchwort, and Marsh Fern. Specimen in isolated ponds in the area contained various species of Oligochaeta, and Gastropods, such as Valvata critata and Anisus leucostoma. Many species of birds are found in the marsh, including Thrush Nightingale, Redwing, Dunnock, and Winter Wren. Smooth Newt and Common Toad were both reported in 1996.

To log this cache:

1. How big is the field today?
2. Mail us the altitude as shown by your GPSr
3. Optional: go to the given coordinates and take a picture of yourself or your GPSr with Uggleviken in the background

Please write your email and your log in english, we don't understand swedish!

Send us the answers, and you can log in immediately. On a log permission you do not need to wait. If something is wrong, we will contact ...

 


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