NATURA 2000 - STANDARD DATA FORM
For Special Protection Areas (SPA),
Proposed Sites for Community Importance (pSCI),
Sites of Community Importance (SCI) and
for Special Areas of Conservation (SAC)
| SITE | SE0110017 |
|---|
| SITENAME | Tyresta-Åva |
|---|
TABLE OF CONTENTS
1. SITE IDENTIFICATION
Back to top1.1 Type
1.2 Site code
1.3 Site name
1.4 First Compilation date
1.5 Update date
1.6 Respondent:
| Name/Organisation: | Länsstyrelsen i Stockholms län |
| Address: |
|
| Email: | stockholm@lansstyrelsen.se |
1.7 Site indication and designation / classification dates
| Date site classified as SPA: | 1996-12 |
| National legal reference of SPA designation | Governmental act M96/4019/4 |
| Date site proposed as SCI: | 1995-12 |
| Date site confirmed as SCI: | 2005-01 |
| Date site designated as SAC: | 2011-03 |
| National legal reference of SAC designation: | Governmental act M2010/4648/Nm |
2. SITE LOCATION
Back to top2.1 Site-centre location [decimal degrees]:
| Longitude: | 18.296900 |
| Latitude: | 59.180500 |
2.2 Area [ha]
2.3 Marine area [%]
2.4 Sitelength [km] (optional):
No information provided
2.5 Administrative region code and name
No information provided
2.6 Biogeographical Region(s)
|
Boreal
| (0.00 %) |
Marine Baltic Sea
| (2.20 %) |
3. ECOLOGICAL INFORMATION
Back to top3.1 Habitat types present on the site and assessment for them
|
Annex I Habitat types
|
Site assessment
|
|---|
|
Code
|
PF
|
NP
|
Cover [ha]
|
Cave [number]
|
Data quality
|
A|B|C|D
|
A|B|C
|
|---|
| | | | | | | Representativity | Relative Surface | Conservation | Global |
|---|
1630
|
|
| 5.6
| 0.00
| M
| B
| C
| A
| B
|
| 3110
|
|
| 49.6
| 0.00
| M
| A
| C
| A
| A
|
| 3160
|
|
| 5.6
| 0.00
| M
| A
| C
| A
| C
|
| 6270
|
|
| 10.7
| 0.00
| M
| B
| C
| B
| B
|
| 7140
|
|
| 56.9
| 0.00
| M
| B
| C
| A
| C
|
| 9010
|
|
| 2081.1
| 0.00
| M
| A
| C
| A
| A
|
| 9020
|
|
| 8.6
| 0.00
| M
| A
| C
| B
| B
|
| 9070
|
|
| 41.1
| 0.00
| M
| A
| C
| B
| B
|
| 9080
|
|
| 1.3
| 0.00
| M
| A
| C
| A
| B
|
| 9180
|
|
| 6.7
| 0.00
| M
| B
| C
| B
| B
|
| 91D0
|
|
| 140.1
| 0.00
| M
| B
| C
| B
| C
|
- PF: for the habitat types that can have a non-priority as well as a priority form (6210, 7130, 9430) enter "X" in the column PF to indicate the priority form.
- NP: in case that a habitat type no longer exists in the site enter: x (optional)
- Cover: decimal values can be entered
- Caves: for habitat types 8310, 8330 (caves) enter the number of caves if estimated surface is not available.
- Data quality: G = 'Good' (e.g. based on surveys); M = 'Moderate' (e.g. based on partial data with some extrapolation); P = 'Poor' (e.g. rough estimation)
3.2 Species referred to in Article 4 of Directive 2009/147/EC and listed in Annex II of Directive 92/43/EEC and site evaluation for them
- Group: A = Amphibians, B = Birds, F = Fish, I = Invertebrates, M = Mammals, P = Plants, R = Reptiles
- S: in case that the data on species are sensitive and therefore have to be blocked for any public access enter: yes
- NP: in case that a species is no longer present in the site enter: x (optional)
- Type: p = permanent, r = reproducing, c = concentration, w = wintering (for plant and non-migratory species use permanent)
- Unit: i = individuals, p = pairs or other units according to the Standard list of population units and codes in accordance with Article 12 and 17 reporting (see reference portal)
- Abundance categories (Cat.): C = common, R = rare, V = very rare, P = present - to fill if data are deficient (DD) or in addition to population size information
- Data quality: G = 'Good' (e.g. based on surveys); M = 'Moderate' (e.g. based on partial data with some extrapolation); P = 'Poor' (e.g. rough estimation); VP = 'Very poor' (use this category only, if not even a rough estimation of the population size can be made, in this case the fields for population size can remain empty, but the field "Abundance categories" has to be filled in)
3.3 Other important species of flora and fauna (optional)
No information provided
4. SITE DESCRIPTION
Back to top4.1 General site character
|
Habitat class
|
% Cover
|
|---|
| N01 | 1.00 |
| N06 | 3.00 |
| N07 | 3.00 |
| N15 | 7.00 |
| N16 | 2.00 |
| N17 | 82.00 |
| N19 | 1.00 |
| N23 | 1.00 |
Total Habitat Cover | 100 |
|---|
Other Site Characteristics
| This site is situated about 20 km southeast of Stockholm city. It is one of the most extensive areas of western taiga in southern Sweden. Outcrop of Precambrian bedrock covers most of the area. Narrow valleys are filled with till and peat. Small areas around Brakmaren in the north, around Tyresta village in the southwest and in the Åvaån valley in the south-east are dominated by clay. Sparsely forested bedrock on altitudes between 40 and 70 meters above sea level is the dominating landscape elements in the area. A scattered pine forest of lichen type dominates the vegetation on the bedrock outcrops with very low productivity (flat-rock pine forest). Numerous, mostly narrow, valleysformed along tectonic joints are other typical landscape elements.Coniferous forests dominate the vegetation. In the valleys forest alternatewith oligotrophic and dystrophic lakes, mires and bogs. The forests in thevalleys are mainly wet or moist forest types dominated by Norwegian spruce.In the north some areas with broad-leafed deciduous forest has beenincluded. The broad-leafed woods grow on rocky slopes and on adjacentflatland with soils rich in mould. In the southeast an agriculturallandscape with pastures has been included. In year 1999 a major forest-firecovered 250 -300 ha in the southern parts of the site and more outside. Inthe central parts of the site the forests are comparatively young due to anelder forest-fire from the beginning of the 20-th century. |
4.2 Quality and importance
| The major quality of the site is its vast area of western taiga. Such a large area is very rare in southern Sweden. True primary forests in the site are of flat-rock pine forest-type. Very littleor no signs of cutting or other human impact can be found. Norwegian spruceforests in the narrow valleys show some traces of forestry, but they havebeen more or less left for free development during the 20th century. Logs and standing dead trees are numerous in large parts of the site. The site also includes some areas in the northern and south-eastern parts whereforestry has been going on until quite recently. These areas have beenincluded in the site mainly because of some small brooks that accommodate a very exclusive invertebrate fauna. In the north some areas with broad-leafeddeciduous forest has been included. Broad-leaved forests of the site areknown for several southern vascular plants, which are rare so far north. A rich flora of epiphytes with many threatened species also inhabits these forests. In the southeast an agricultural landscape with species rich pastures, open stands of old, huge oak and marine shore meadows have been included. The recently burnt area maintained for a few years a very large population of Geranium lanuginosum. There is also an extensive investigation programme on fire-dependent invertebrate-fauna, which has presented interesting preliminary results. |
4.3 Threats, pressures and activities with impacts on the site
The most important impacts and activities with high effect on the site
| Negative Impacts |
|---|
| Rank | Threats and pressures [code] | Pollution (optional) [code] | inside/outside [i|o|b] |
|---|
| L | B | | i |
| L | H04 | | b |
| Positive Impacts |
|---|
| Rank | Activities, management [code] | Pollution (optional) [code] | inside/outside [i|o|b] |
|---|
| L | A04 | | i |
Rank: H = high, M = medium, L = low
Pollution: N = Nitrogen input, P = Phosphor/Phosphate input, A = Acid input/acidification,
T = toxic inorganic chemicals, O = toxic organic chemicals, X = Mixed pollutions
i = inside, o = outside, b = both
4.4 Ownership (optional)
No information provided
4.5 Documentation (optional)
| Tyresö kommun. 1994. Redovisning av klass I och II naturvårdsobjekt i Tyresö. Stencil.Haninge kommun. Naturvårdskonsulterna i Sigtuna HB.1981. Naturinventering av nordöstra Haninge. Häfte.Stockholms universitet. Uppsats från kursen Naturvård med geovetenskaplig inriktning-Tyresta-Åva. 1987. Stenciler.Naturvårdsverket. 1993. Skötselplan med föreskrifter för Tyresta nationalpark.Naturvårdsverket. Skogsstyrelsen. 1982. Urskogar - Inventering av urskogsartade områden i Sverige. 2. Södra Sverige. SNV pm 1508.Botaniska sällskapet i Stockholm. Arbetsgruppen för Länsstyrelsen i Stockholms län. 1983. Naturvårdsprogram för Stockholms län.Stockholmstraktens lavar. Södertörnprojektet. 1991. Hotade lavar på Södertörn- Tyresö kommun.Tyresö kommun. Naturvårdskonsulterna i Sigtuna 1981. Naturinventering Tyresö kommun huvudrapport.Haninge kommun. Magnuson, L. 1987. Vägvisare till naturen i Haninge.Collinder, P. m fl. 1994. Naturen i Stockholms län - en utflyktsguide.Haninge kommun. 1994. Inventering av hotade arter på Södertörn.Föreningen Natur och Samhälle i Norden.1982. Tyresta. Publikation 6. Länsstyrelsen i Stockholms län. 1993. Ängar och hagar. Rapport 1993:18.Länsstyrelsen i Stockholms län. 1995. Våtmarksinventering i Stockholms län. |
5. SITE PROTECTION STATUS
Back to top5.1 Designation types at national and regional level (optional):
|
Code
|
Cover [%]
|
|---|
| SE01 | 58.00 |
| SE02 | 42.00 |
5.2 Relation of the described site with other sites (optional):
Designated at national or regional level:
|
Type code
|
Site name
|
Type
|
Cover [%]
|
|---|
| SE01 | Tyresta nationalpark | - | 100.00 |
| SE02 | Tyresta naturreservat | * | 50.00 |
| SE02 | Hammarbergets naturreservat | - | 100.00 |
5.3 Site designation (optional)
No information provided
6. SITE MANAGEMENT
Back to top6.1 Body(ies) responsible for the site management:
| Organisation: | Länsstyrelsen i Stockholms län |
| Address: | |
| Email: | stockholm@lansstyrelsen.se |
| Organisation: | Stiftelsen Tyrestaskogen |
| Address: | |
| Email: | info@tyresta.se |
6.2 Management Plan(s):
An actual management plan does exist:
6.3 Conservation measures (optional)
No information provided
7. MAP OF THE SITE
Back to top| INSPIRE ID: | SE.SWEPA.SE0110017 |
| Map delivered as PDF in electronic format (optional) |
|
SITE DISPLAY