Database release:
SDF
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)

TABLE OF CONTENTS

1. SITE IDENTIFICATION

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1.1 Type

B

1.2 Site code

SE0220702

1.3 Site name

Svärtaån

1.4 First Compilation date

2005-10

1.5 Update date

2012-08

1.6 Respondent:

Name/Organisation:Länsstyrelsen i Södermanlands län
Address:               
Email:sodermanland@lansstyrelsen.se
Date site proposed as SCI:2006-05
Date site confirmed as SCI:2007-11
Date site designated as SAC:2014-01
National legal reference of SAC designation:Governmental act M2013/2696/Nm

2. SITE LOCATION

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2.1 Site-centre location [decimal degrees]:

Longitude:17.086300
Latitude:58.794300

2.2 Area [ha]

5.0000

2.3 Marine area [%]

0.4900

2.4 Sitelength [km]:

0.00

2.6 Biogeographical Region(s)

Boreal (0.00 %) Marine Baltic Sea (0.49 %)

3. ECOLOGICAL INFORMATION

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3.1 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
      RepresentativityRelative SurfaceConservationGlobal
3210  info      4.94  0.00 
  • 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

Species Population in the site Site assessment
G Code Scientific Name S NP T Size Unit Cat. D.qual. A|B|C|D A|B|C
      MinMax  Pop.Con.Iso.Glo.
I1032Unio crassus           
  • 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)

Species

Population in the site

Motivation

Group CODE Scientific Name S NP Size Unit Cat. Species Annex Other categories
     MinMax C|R|V|PIVVABCD
  • Group: A = Amphibians, B = Birds, F = Fish, Fu = Fungi, I = Invertebrates, L = Lichens, M = Mammals, P = Plants, R = Reptiles
  • CODE: for Birds, Annex IV and V species the code as provided in the reference portal should be used in addition to the scientific name
  • 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)
  • 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)
  • Cat.: Abundance categories: C = common, R = rare, V = very rare, P = present
  • Motivation categories: IV, V: Annex Species (Habitats Directive), A: National Red List data; B: Endemics; C: International Conventions; D: other reasons

4. SITE DESCRIPTION

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4.1 General site character

Habitat class % Cover
N06100.00

Total Habitat Cover

100

Other Site Characteristics

Ån rinner genom ett aktivt jordbrukslandskap med enstaka förekomster av trädridåer. Förekomsten av tjockskalig målarmussla är god på vissa platser.

4.2 Quality and importance

Svärtaån i detta avseende avgränsas från Svärta gård och nedströms till Sjösafjärden. Ån rinner i en dalgång som för länge sedan varit en havsvik. Ån flyter långsamt fram med mjuka bågar i den uppodlade dalbotten där åkrar bitvis går ända fram till åkanten varvat med skyddszoner. Den dominerande jordarten i ån är lera och bredden påån varierar mellan allt från några meter till 10-12 meter. Ån har visat sig innehålla ett antal ovanliga fiskarter som tex grönling och ål. Ån har den näst största populationen av den tjockskaliga målarmusslan i länet. En grov upskattning är att här finns mellan 400-600 individer.

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
RankThreats and pressures [code]Pollution (optional) [code]inside/outside [i|o|b]
HH01.04i
HH01.05i
HJ02.04.02i
MJ02.05.05i
Positive Impacts
RankActivities, management [code]Pollution (optional) [code]inside/outside [i|o|b]
HJ02.04.01i

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

5. SITE PROTECTION STATUS

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5.1 Designation types at national and regional level:

Code Cover [%]
SE00100.00

6. SITE MANAGEMENT

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6.1 Body(ies) responsible for the site management:

Organisation:Länsstyrelsen i Södermanlands län
Address:
Email:sodermanland@lansstyrelsen.se

6.2 Management Plan(s):

An actual management plan does exist:

X
Yes Name: Svärtaån
Link: http://skyddadnatur.naturvardsverket.se/

No, but in preparation
No

 

7. MAP OF THE SITE

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INSPIRE ID:SE.SWEPA.SE0220702
Map delivered as PDF in electronic format (optional)
Yes
No

SITE DISPLAY