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

C

1.2 Site code

SE0230067

1.3 Site name

Tåkern

1.4 First Compilation date

1995-08

1.5 Update date

2010-05

1.6 Respondent:

Name/Organisation:Länsstyrelsen i Östergötlands län
Address:               
Email:ostergotland@lansstyrelsen.se

1.7 Site indication and designation / classification dates

Date site classified as SPA:1996-03
National legal reference of SPA designationGovernmental act M96/867/4
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

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2.1 Site-centre location [decimal degrees]:

Longitude:14.813500
Latitude:58.352100

2.2 Area [ha]

5395.1000

2.3 Marine area [%]

0.0000

2.4 Sitelength [km] (optional):


No information provided

2.5 Administrative region code and name


No information provided

2.6 Biogeographical Region(s)

Boreal (100.00 %)

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
3150  info      4430  0.00 
6410  info      430  0.00 
6430  info      54  0.00 
91E0  info      25  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.
BA298Acrocephalus arundinaceus    200  260   
BA054Anas acuta    51  200   
BA054Anas acuta     
BA056Anas clypeata    11  50   
BA056Anas clypeata    51  100   
BA050Anas penelope     
BA050Anas penelope    5000  15000   
BA055Anas querquedula    50   
BA055Anas querquedula    11  20   
BA051Anas strepera    2000  3000   
BA051Anas strepera    51  100   
BA041Anser albifrons    101  300   
BA043Anser anser    101  500   
BA043Anser anser    12000  20000   
BA040Anser brachyrhynchus    101  200   
BA039Anser fabalis    10000  15000   
BA028Ardea cinerea    11  50   
BA222Asio flammeus     
BA222Asio flammeus     
BA059Aythya ferina    10000  30000   
BA059Aythya ferina    51  100   
BA061Aythya fuligula    11  50   
BA061Aythya fuligula    3000  6000   
BA021Botaurus stellaris    41  50  males   
BA044Branta canadensis    1000  6000   
BA044Branta canadensis    10   
BA045Branta leucopsis    501  3000   
BA067Bucephala clangula    11  50   
BA067Bucephala clangula    2000  5000   
BA466Calidris alpina schinzii     
BA147Calidris ferruginea    11  50   
BA145Calidris minuta    51  100   
BA146Calidris temminckii    11  50   
BA197Chlidonias niger    11  30   
BA081Circus aeruginosus    41  50   
BA082Circus cyaneus    11  20   
BA082Circus cyaneus    11  20   
BA084Circus pygargus     
BA207Columba oenas          DD 
BA037Cygnus columbianus bewickii    10   
BA038Cygnus cygnus    101  300   
BA036Cygnus olor    51  100   
BA036Cygnus olor    2000  4000   
I1081Dytiscus latissimus          DD 
BA098Falco columbarius     
BA098Falco columbarius     
BA099Falco subbuteo     
BA099Falco subbuteo    11  50   
BA125Fulica atra    101  300   
BA125Fulica atra    10000  30000   
BA154Gallinago media    10   
BA154Gallinago media     
BA002Gavia arctica    10   
BA127Grus grus    5000  10000   
BA127Grus grus    21  30   
BA130Haematopus ostralegus    11  30   
BA130Haematopus ostralegus     
BA338Lanius collurio    10   
BA179Larus ridibundus    5000  10000   
BA179Larus ridibundus    2000  3000   
I1042Leucorrhinia pectoralis          DD 
BA157Limosa lapponica    11  50   
BA156Limosa limosa     
BA156Limosa limosa     
BA272Luscinia svecica    11  50   
BA068Mergus albellus    51  200   
BA070Mergus merganser    101  500   
BA260Motacilla flava    11  20   
BA160Numenius arquata    11  50   
BA094Pandion haliaetus     
BA072Pernis apivorus     
BA391Phalacrocorax carbo sinensis    300  500   
BA170Phalaropus lobatus     
BA151Philomachus pugnax     
BA151Philomachus pugnax    101  500   
BA140Pluvialis apricaria    101  250   
BA141Pluvialis squatarola    11  100   
BA007Podiceps auritus    10   
BA007Podiceps auritus     
BA006Podiceps grisegena    31  50   
BA119Porzana porzana    males   
BA336Remiz pendulinus      DD 
BA190Sterna caspia    11  50   
BA193Sterna hirundo    101  200   
BA161Tringa erythropus    101  200   
BA166Tringa glareola     
BA166Tringa glareola    501  1000   
BA164Tringa nebularia    101  200   
BA165Tringa ochropus    51  100   
BA162Tringa totanus    51  100   
BA162Tringa totanus    11  20   
A1166Triturus cristatus    100   
I1014Vertigo angustior          DD 
I1013Vertigo geyeri          DD 
  • 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

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4.1 General site character

Habitat class % Cover
N0682.00
N109.00
N151.00
N198.00

Total Habitat Cover

100

Other Site Characteristics

Tåkern is one of the best lakes for birds in the north of Europe. A big number of birds breed at the lake and a large amount stop for resting on their way north or south in spring and fall. Around the lake there are widespread pastures with a rich flora and fauna. Tåkern lies in the open farming land close to the mountain Omberg and the big lake Vättern.AFTER THE ICE AGE .....Lake Tåkern was formed when it became landlocked from the Yoldia Sea about 10000 years ago. The water was poor in nutrients and was as much as 12 meters deep. During the following thousands of years the lake gradually became shallower with the accumulation of organic sediments. The more shallow inlets became marshland and about 5000 years ago Dags Mosse (bog) was formed at the south-western end of the lake. Lake Tåkern's outflow into Lake Vättern was then what is known today as Ålebäcken, south of Omberg Hill.About 30 Stone Age settlements have been found around Lake Tåkern, evidence showing that the area was exploited for hunting and fishing. The earliest trace of human activity is represented by a bone harpoon which could be as much as 9000 years old.THE LOWERING OF THE WATER LEVELDuring the 19th century many lakes were partially drained in order to create new pastures and fields. During the years 1842 - 44 the water level of Lake Tåkern was lowered by 1.7 meters by deepening Mjölnaån, its northern outflow into Lake Vättern. This left a depth of only 0.8m, which was the start for Lake Tåkern as a bird lake. The reedbeds around the lake became more extensive and the water meadows around the shores well grazed. The history of Tåkern as a bird lake goes back to no more than 150 years.REGULATION OF THE WATER LEVELAfter alternating droughts and floods during the first half of the 20th century, the water level became regulated by means of a sluice on Mjölnaån, the lake's outflow. According to water rights, the water level is allowed to fluctuate by about 45 cm annually, the highest being in the spring and the lowest water level in late summer. Spring floods are an important part of the annual rhythm of the water meadows.THE WATERThe limestone found north of Lake Tåkern has caused the water and surrounding soils to be alkaline. The water is also rich in nutrients but despite this it it often clear. Most of the nutrients are absorbed by the water vegetation and small planktonic algae seldom dominate. The vegetation on the bottom is dominated by whorled algae, but the plant life also includes Fan-leaved Water Crowfoot and several species of pondweed. In these "underwater forests" there is a wealth of fish fry, crustaceans and aquatic insects.THE REEDBEDSThe reedbeds around Lake Tåkern are the largest in Northern Europe. They really began to spread at the beginning of the 20th century to an area equivalent to about 2400 football pitches. They are most extensive in the western part of the lake which is more protected from wind. The reedbeds seethe with life, an intensity of insects and birds. The reeds provide protection and plenty of food. Some of the reeds are harvested in the winter for thatched roofs.THE WATER MEADOWSLake Tåkern's water meadows comprise about 1112 acres which have been created through grazing and mowing over a long period of time. The water meadows are alkaline with a very rich flora, including Birdseye Primrose, Yellow Iris, Dune Gentian and many orchids, e.g. Fly Orchid, Early Marsh Orchid and Musk Orchid. In many places inside the reedbed there are stretches of open water - the "Blue Border". This habitat is important for waders and ducks. In order to preserve the biological diversity of the meadows and prevent overgrowth it is vital to continually graze or cut them for hay.THE INSECT LIFE OF TÅKERNLake Tåkern's many habitats give rise to a rich insect life. Common dragonflies are the Four-spotted Chaser and various Darters. Among the most common beetles in the woodlands along the shore is a Rove Be

4.2 Quality and importance

The lake Tåkern is of national interest and is also on the RAMSAR-list. A large amount of birds breed at the lake. It is also very important as a resting site for migratory birds, more than 20 000 birds rest at the lake. The Molina-meadows around the lake have an excellent flora and fauna.

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]
HA03.03b
HA04.03b
MC03.03b
MF06.01b
HH01b
MI01b
HJ02.04.02i
MJ02.10i
MK03i
Positive Impacts
RankActivities, management [code]Pollution (optional) [code]inside/outside [i|o|b]
HA03.02b
HA04.02b
MB02.06i
HB06i
MF03.02.04b
MG03b
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

4.4 Ownership (optional)


No information provided

4.5 Documentation (optional)

Svampar i 13 naturreservat och 118 andra värdefulla hagmarker och lövskogar i Östergötlands län. Report 1995:9, Länsstyrelsen, Linköping.Binder 09-205 parts 1-6, Ödeshög, Tåkerns NR, Länsstyrelsen i Östergötlands län.Fieldwork 1995. Report to the Tåkernfound WWF. Tåkern Fieldobservatory 1995.

5. SITE PROTECTION STATUS

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5.1 Designation types at national and regional level (optional):

Code Cover [%]
SE02100.00

5.2 Relation of the described site with other sites (optional):

Designated at national or regional level:

Type code Site name Type Cover [%]
SE02Tåkern=100.00

Designated at international level:

Type Site name Type Cover [%]
ramsarTåkern=100.00

5.3 Site designation (optional)


No information provided

6. SITE MANAGEMENT

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6.1 Body(ies) responsible for the site management:

Organisation:Länsstyrelsen i Östergötlands län
Address:
Email:ostergotland@lansstyrelsen.se

6.2 Management Plan(s):

An actual management plan does exist:

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

No, but in preparation
No

6.3 Conservation measures (optional)

The main purpose of the nature reserve is to maintain the attraction of Tåkern as an important place to birds as a place for breeding and resting during the migration. It is also important to maintain the other flora and fauna living in the area.See managment plans in binder 09-205 parts 1-6, Ödeshög, Tåkerns NR, Länsstyrelsen i Östergötlands län.

 

7. MAP OF THE SITE

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INSPIRE ID:SE.SWEPA.SE0230067
Map delivered as PDF in electronic format (optional)
Yes
X
No

SITE DISPLAY